cmd/go: TestScript/vet_basic failures (SEGV in cmd/fix)

[gopherbot]

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-10-28T03:18:38Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-185866465/tmpdir3068741286/vet_basic3252654741
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-185866465/tmpdir3068741286/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        r26     0x0
        r27     0x820
        r28     0x10609c460
        r29     0x16aff7008
        lr      0x104ed5828
        sp      0x16aff7000
        pc      0x19fa9bacc
        fault   0x19fa9bacc
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:32: go vet -fix -diff example.com/x: exit status 2
--- FAIL: TestScript/vet_basic (966.25s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

2025-10-28 02:09 gotip-darwin-arm64-race go@9a77aa4f cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-10-28T03:18:38Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-185866465/tmpdir3068741286/vet_basic3252654741
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-185866465/tmpdir3068741286/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        r26     0x0
        r27     0x820
        r28     0x10609c460
        r29     0x16aff7008
        lr      0x104ed5828
        sp      0x16aff7000
        pc      0x19fa9bacc
        fault   0x19fa9bacc
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:32: go vet -fix -diff example.com/x: exit status 2
--- FAIL: TestScript/vet_basic (966.25s)

2025-11-14 18:30 gotip-darwin-arm64-race go@ddd8558e cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-11-14T18:49:25Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-2529122854/tmpdir2812759295/vet_basic713616407
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-2529122854/tmpdir2812759295/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        r26     0x5800
        r27     0x101eaf000
        r28     0x101ed4660
        r29     0x16f1bec70
        lr      0x1856e8894
        sp      0x16f1bebe0
        pc      0x1856aa6ec
        fault   0x1856aa6ec
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:23: go vet -json example.com/x: exit status 2
--- FAIL: TestScript/vet_basic (1015.51s)

2025-11-14 19:01 gotip-darwin-arm64-race go@b57962b7 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-11-15T03:53:47Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-831859996/tmpdir220921254/vet_basic3803128525
go proxy: open /Users/swarming/.swarming/w/ir/x/w/goroot/src/cmd/go/testdata/mod/example.net_v1.5.0.txt: no such file or directory
go proxy: open /Users/swarming/.swarming/w/ir/x/w/goroot/src/cmd/go/testdata/mod/example.net_badgo_v1.5.0.txt: no such file or directory
go proxy: no archive example.net v1.5.0: file does not exist
go proxy: no archive example.net/badgo v1.5.0: file does not exist
go proxy: no archive example.net/badgo v1.6.0: file does not exist
...
        r27     0x820
        r28     0x105748660
        r29     0x16b94b018
        lr      0x104587cb8
        sp      0x16b94b010
        pc      0x193887acc
        fault   0x193887acc
        [exit status 2]
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:14: context deadline exceeded
--- FAIL: TestScript/vet_basic (499.28s)

2025-11-14 19:09 gotip-darwin-arm64-race go@b24aec59 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-11-15T03:13:12Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-3304540562/tmpdir403636198/vet_basic3475221309
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-3304540562/tmpdir403636198/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        					}
        				]
        			}
        		]
        	}
        }
        [stderr]
        cmp: /Users/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/darwin_arm64/fix: signal: segmentation fault
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:63: go fix -json example.com/x: exit status 1
--- FAIL: TestScript/vet_basic (11.12s)

2025-11-20 19:40 gotip-darwin-arm64-race go@e3d46456 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-11-25T14:29:15Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-427880985/tmpdir2744694190/vet_basic2382768295
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-427880985/tmpdir2744694190/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        r26     0x7100
        r27     0x105e17000
        r28     0x105e3c6c0
        r29     0x16b262c70
        lr      0x191b9c894
        sp      0x16b262be0
        pc      0x191b5e6ec
        fault   0x191b5e6ec
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:19: go vet -timeformat example.com/x: exit status 2
--- FAIL: TestScript/vet_basic (552.46s)

2025-11-25 21:44 gotip-darwin-arm64-race go@89f6dba7 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-11-25T22:42:48Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-862411214/tmpdir3609230008/vet_basic1258127818
go proxy: open /Users/swarming/.swarming/w/ir/x/w/goroot/src/cmd/go/testdata/mod/example.com_v1.0.0-bad.txt: no such file or directory
go proxy: no archive example.com v1.0.0-bad: file does not exist
go proxy: open /Users/swarming/.swarming/w/ir/x/w/goroot/src/cmd/go/testdata/mod/example.com_a_v1.0.1.txt: no such file or directory
go proxy: no archive example.com/a v1.0.1: file does not exist
go proxy: open /Users/swarming/.swarming/w/ir/x/w/goroot/src/cmd/go/testdata/mod/example.com_v1.0.1.txt: no such file or directory
...
        					}
        				]
        			}
        		]
        	}
        }
        [stderr]
        vendor/golang.org/x/net/dns/dnsmessage: /Users/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/darwin_arm64/fix: signal: segmentation fault
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:63: go fix -json example.com/x: exit status 1
--- FAIL: TestScript/vet_basic (11.66s)

— watchflakes

[adonovan]

This watchflake report is from a week ago. Can't repro at tip.

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

2025-12-15 21:08 go1.26-darwin-arm64-race release-branch.go1.26@d14b6427 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-12-15T23:22:55Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-2447384964/tmpdir2647167634/vet_basic2060934353
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-2447384964/tmpdir2647167634/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        r26     0xa100
        r27     0x1021ef000
        r28     0x102214c20
        r29     0x16eebec60
        lr      0x183278894
        sp      0x16eebebd0
        pc      0x18323a6ec
        fault   0x18323a6ec
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:63: go fix -json example.com/x: exit status 2
--- FAIL: TestScript/vet_basic (465.33s)

2025-12-16 21:08 gotip-darwin-arm64-race go@65b71c11 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2025-12-16T21:37:17Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-794060888/tmpdir1725552362/vet_basic3934648864
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-794060888/tmpdir1725552362/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        r26     0x5e00
        r27     0x105303000
        r28     0x105328c20
        r29     0x16bdaac70
        lr      0x19befc894
        sp      0x16bdaabe0
        pc      0x19bebe6ec
        fault   0x19bebe6ec
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:19: go vet -timeformat example.com/x: exit status 2
--- FAIL: TestScript/vet_basic (455.88s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

2026-01-16 17:40 gotip-darwin-arm64-race go@7251c9e0 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2026-01-16T18:09:13Z
    script_test.go:141: $WORK=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-2319350348/tmpdir2553728177/vet_basic3298330518
    script_test.go:163: 
        PATH=/Users/swarming/.swarming/w/ir/x/t/cmd-go-test-2319350348/tmpdir2553728177/testbin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/x/w/goroot/bin:/Users/swarming/.swarming/w/ir/cache/tools/bin:/Users/swarming/.swarming/w/ir/bbagent_utility_packages:/Users/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/Users/swarming/.swarming/w/ir/cipd_bin_packages:/Users/swarming/.swarming/w/ir/cipd_bin_packages/bin:/Users/swarming/.swarming/w/ir/cache/cipd_client:/Users/swarming/.swarming/w/ir/cache/cipd_client/bin:/Users/swarming/.swarming/cipd_cache/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=arm64
...
        					}
        				]
        			}
        		]
        	}
        }
        [stderr]
        path: /Users/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/darwin_arm64/fix: signal: segmentation fault
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:63: go fix -json example.com/x: exit status 1
--- FAIL: TestScript/vet_basic (11.47s)

— watchflakes

[adonovan]

Running it locally with -count=1000 I got the following failure (at 7251c9e), but I think it's just a timeout, possibly caused by the DiskCache.Trim issue in the child process (whose stack we don't have):

src$ go test -count=100 -race ./cmd/go -run=TestScript/vet_basic
vcs-test.golang.org rerouted to http://127.0.0.1:58246
https://vcs-test.golang.org rerouted to https://127.0.0.1:58247
go test proxy running at GOPROXY=http://127.0.0.1:58248/mod
vcs-test.golang.org rerouted to http://127.0.0.1:58305
https://vcs-test.golang.org rerouted to https://127.0.0.1:58306
vcs-test.golang.org rerouted to http://127.0.0.1:58317
https://vcs-test.golang.org rerouted to https://127.0.0.1:58318
vcs-test.golang.org rerouted to http://127.0.0.1:58319
https://vcs-test.golang.org rerouted to https://127.0.0.1:58320
vcs-test.golang.org rerouted to http://127.0.0.1:58345
https://vcs-test.golang.org rerouted to https://127.0.0.1:58346
vcs-test.golang.org rerouted to http://127.0.0.1:58362
https://vcs-test.golang.org rerouted to https://127.0.0.1:58363
vcs-test.golang.org rerouted to http://127.0.0.1:58380
https://vcs-test.golang.org rerouted to https://127.0.0.1:58381
vcs-test.golang.org rerouted to http://127.0.0.1:58392
https://vcs-test.golang.org rerouted to https://127.0.0.1:58393
vcs-test.golang.org rerouted to http://127.0.0.1:58394
https://vcs-test.golang.org rerouted to https://127.0.0.1:58395
vcs-test.golang.org rerouted to http://127.0.0.1:58412
https://vcs-test.golang.org rerouted to https://127.0.0.1:58413
vcs-test.golang.org rerouted to http://127.0.0.1:58417
https://vcs-test.golang.org rerouted to https://127.0.0.1:58418
vcs-test.golang.org rerouted to http://127.0.0.1:58436
https://vcs-test.golang.org rerouted to https://127.0.0.1:58437
vcs-test.golang.org rerouted to http://127.0.0.1:58440
https://vcs-test.golang.org rerouted to https://127.0.0.1:58441
vcs-test.golang.org rerouted to http://127.0.0.1:58445
https://vcs-test.golang.org rerouted to https://127.0.0.1:58446
vcs-test.golang.org rerouted to http://127.0.0.1:58455
https://vcs-test.golang.org rerouted to https://127.0.0.1:58456
vcs-test.golang.org rerouted to http://127.0.0.1:58458
https://vcs-test.golang.org rerouted to https://127.0.0.1:58459
vcs-test.golang.org rerouted to http://127.0.0.1:58476
https://vcs-test.golang.org rerouted to https://127.0.0.1:58477
vcs-test.golang.org rerouted to http://127.0.0.1:58486
https://vcs-test.golang.org rerouted to https://127.0.0.1:58487
vcs-test.golang.org rerouted to http://127.0.0.1:58503
https://vcs-test.golang.org rerouted to https://127.0.0.1:58504
vcs-test.golang.org rerouted to http://127.0.0.1:58509
https://vcs-test.golang.org rerouted to https://127.0.0.1:58510
vcs-test.golang.org rerouted to http://127.0.0.1:58512
https://vcs-test.golang.org rerouted to https://127.0.0.1:58513
vcs-test.golang.org rerouted to http://127.0.0.1:58530
https://vcs-test.golang.org rerouted to https://127.0.0.1:58531
vcs-test.golang.org rerouted to http://127.0.0.1:58533
https://vcs-test.golang.org rerouted to https://127.0.0.1:58534
vcs-test.golang.org rerouted to http://127.0.0.1:58539
https://vcs-test.golang.org rerouted to https://127.0.0.1:58540
vcs-test.golang.org rerouted to http://127.0.0.1:58543
https://vcs-test.golang.org rerouted to https://127.0.0.1:58544
vcs-test.golang.org rerouted to http://127.0.0.1:58557
https://vcs-test.golang.org rerouted to https://127.0.0.1:58558
vcs-test.golang.org rerouted to http://127.0.0.1:58565
https://vcs-test.golang.org rerouted to https://127.0.0.1:58566
vcs-test.golang.org rerouted to http://127.0.0.1:58570
https://vcs-test.golang.org rerouted to https://127.0.0.1:58571
vcs-test.golang.org rerouted to http://127.0.0.1:58576
https://vcs-test.golang.org rerouted to https://127.0.0.1:58577
vcs-test.golang.org rerouted to http://127.0.0.1:58580
https://vcs-test.golang.org rerouted to https://127.0.0.1:58581
vcs-test.golang.org rerouted to http://127.0.0.1:58596
https://vcs-test.golang.org rerouted to https://127.0.0.1:58597
vcs-test.golang.org rerouted to http://127.0.0.1:58602
https://vcs-test.golang.org rerouted to https://127.0.0.1:58603
vcs-test.golang.org rerouted to http://127.0.0.1:58606
https://vcs-test.golang.org rerouted to https://127.0.0.1:58607
vcs-test.golang.org rerouted to http://127.0.0.1:58612
https://vcs-test.golang.org rerouted to https://127.0.0.1:58613
vcs-test.golang.org rerouted to http://127.0.0.1:58615
https://vcs-test.golang.org rerouted to https://127.0.0.1:58616
vcs-test.golang.org rerouted to http://127.0.0.1:58630
https://vcs-test.golang.org rerouted to https://127.0.0.1:58631
vcs-test.golang.org rerouted to http://127.0.0.1:58634
https://vcs-test.golang.org rerouted to https://127.0.0.1:58635
vcs-test.golang.org rerouted to http://127.0.0.1:58638
https://vcs-test.golang.org rerouted to https://127.0.0.1:58639
vcs-test.golang.org rerouted to http://127.0.0.1:58644
https://vcs-test.golang.org rerouted to https://127.0.0.1:58645
vcs-test.golang.org rerouted to http://127.0.0.1:58647
https://vcs-test.golang.org rerouted to https://127.0.0.1:58648
vcs-test.golang.org rerouted to http://127.0.0.1:58662
https://vcs-test.golang.org rerouted to https://127.0.0.1:58663
vcs-test.golang.org rerouted to http://127.0.0.1:58668
https://vcs-test.golang.org rerouted to https://127.0.0.1:58669
vcs-test.golang.org rerouted to http://127.0.0.1:58672
https://vcs-test.golang.org rerouted to https://127.0.0.1:58673
vcs-test.golang.org rerouted to http://127.0.0.1:58678
https://vcs-test.golang.org rerouted to https://127.0.0.1:58679
vcs-test.golang.org rerouted to http://127.0.0.1:58682
https://vcs-test.golang.org rerouted to https://127.0.0.1:58683
vcs-test.golang.org rerouted to http://127.0.0.1:58697
https://vcs-test.golang.org rerouted to https://127.0.0.1:58698
vcs-test.golang.org rerouted to http://127.0.0.1:58703
https://vcs-test.golang.org rerouted to https://127.0.0.1:58704
vcs-test.golang.org rerouted to http://127.0.0.1:58709
https://vcs-test.golang.org rerouted to https://127.0.0.1:58710
--- FAIL: TestScript (0.05s)
    --- FAIL: TestScript/vet_basic (11.99s)
        script_test.go:139: 2026-01-20T20:38:37Z
        script_test.go:141: $WORK=/var/folders/fy/dn6v01n16zjdwsqy_8qfbbxr000_9w/T/cmd-go-test-4149366053/tmpdir1424320636/vet_basic4194423321
        script_test.go:163: 
            # Test basic features of "go vet"/"go fix" CLI.
            #
            # The example relies on two analyzers:
            # - hostport (which is included in both the fix and vet suites), and
            # - printf (which is only in the vet suite).
            # Each reports one diagnostic with a fix.
            # vet default flags print diagnostics to stderr. Diagnostic => nonzero exit. (0.232s)
            # -hostport runs only one analyzer. Diagnostic => failure. (0.217s)
            # -timeformat runs only one analyzer. No diagnostics => success. (1.253s)
            # JSON output includes diagnostics and fixes. Always success. (1.261s)
            # vet -fix -diff displays a diff. (1.278s)
            # vet -fix quietly applies the vet suite fixes. (1.344s)
            # go fix applies the fix suite fixes. (1.271s)
            # Show diff of fixes from the fix suite. (1.265s)
            # Show fix-suite fixes in JSON form. (1.296s)
            # Show vet-suite fixes in JSON form. (1.255s)
            # Reject -diff + -json. (0.062s)
            # Legacy way of selecting fixers is a no-op. (1.233s)
            > go fix -fix=old1,old2 example.com/x
            [stderr]
            go fix: the -fix=old1,old2 flag is obsolete and has no effectSIGQUIT: quit
            PC=0x18c7f53cc m=0 sigcode=0
            
            goroutine 0 gp=
        script_test.go:163: FAIL: testdata/script/vet_basic.txt:92: go fix -fix=old1,old2 example.com/x: context deadline exceeded
vcs-test.golang.org rerouted to http://127.0.0.1:58713
https://vcs-test.golang.org rerouted to https://127.0.0.1:58714
--- FAIL: TestScript (0.06s)
    --- FAIL: TestScript/vet_basic (1.07s)
        script_test.go:139: 2026-01-20T20:38:49Z
        script_test.go:141: $WORK=/var/folders/fy/dn6v01n16zjdwsqy_8qfbbxr000_9w/T/cmd-go-test-4149366053/tmpdir1424320636/vet_basic3165673105
        script_test.go:163: 
            # Test basic features of "go vet"/"go fix" CLI.
            #
            # The example relies on two analyzers:
            # - hostport (which is included in both the fix and vet suites), and
            # - printf (which is only in the vet suite).
            # Each reports one diagnostic with a fix.
            # vet default flags print diagnostics to stderr. Diagnostic => nonzero exit. (0.256s)
            # -hostport runs only one analyzer. Diagnostic => failure. (0.218s)
            # -timeformat runs only one analyzer. No diagnostics => success. (0.578s)
            > go vet -timeformat example.com/x
            [stderr]
            SIGQUIT: quit
            PC=0x18c7f53cc m=0 sigcode=0
            
            goroutine 0 gp=0x1036846a0 m=0 mp=0x103685fe0 [idle]:
            runtime.pthread_cond_wait(0x103686548, 0x103686508)
            	/Users/adonovan/w/goroot/src/runtime/sys_darwin.go:488 +0x20 fp=0x16da4a910 sp=0x16da4a8e0 pc=0x102468a50
            runtime.semasleep(0xffffffffffffffff)
            	/Users/adonovan/w/goroot/src/runtime/os_darwin.go:77 +0x80 fp=0x16da4a970 sp=0x16da4a910 pc=0x102441ee0
            runtime.notesleep(0x103686138)
            	/Users/adonovan/w/goroot/src/runtime/lock_sema.go:62 +0xac fp=0x16da4a9a0 sp=0x16da4a970 pc=0x10241641c
            runtime.mPark(...)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:1967
            runtime.stopm()
            	/Users/adonovan/w/goroot/src/runtime/proc.go:3008 +0x84 fp=0x16da4a9d0 sp=0x16da4a9a0 pc=0x10244c6b4
            runtime.findRunnable()
            	/Users/adonovan/w/goroot/src/runtime/proc.go:3796 +0xffc fp=0x16da4aba0 sp=0x16da4a9d0 pc=0x10244e43c
            runtime.schedule()
            	/Users/adonovan/w/goroot/src/runtime/proc.go:4164 +0x90 fp=0x16da4abe0 sp=0x16da4aba0 pc=0x10244f7b0
            runtime.park_m(0xc000004f00)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:4304 +0x244 fp=0x16da4ac40 sp=0x16da4abe0 pc=0x10244fc34
            runtime.mcall()
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:339 +0x54 fp=0x16da4ac50 sp=0x16da4ac40 pc=0x102485054
            
            goroutine 1 gp=0xc0000041e0 m=4 mp=0xc000077008 [syscall]:
            runtime.racefini()
            	/Users/adonovan/w/goroot/src/runtime/race.go:507 +0x24 fp=0xc00004d5a0 sp=0xc00004d560 pc=0x102459374
            os.runtime_beforeExit(0x0)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:342 +0x30 fp=0xc00004d5c0 sp=0xc00004d5a0 pc=0x10247eeb0
            os.Exit(0x0)
            	/Users/adonovan/w/goroot/src/os/proc.go:75 +0x3c fp=0xc00004d5e0 sp=0xc00004d5c0 pc=0x1024f030c
            cmd/go/internal/base.Exit()
            	/Users/adonovan/w/goroot/src/cmd/go/internal/base/base.go:134 +0x98 fp=0xc00004d620 sp=0xc00004d5e0 pc=0x1026fa5c8
            cmd/go.main()
            	/Users/adonovan/w/goroot/src/cmd/go/main.go:220 +0x1734 fp=0xc00004d920 sp=0xc00004d620 pc=0x102cecfa4
            cmd/go.Main(...)
            	/Users/adonovan/w/goroot/src/cmd/go/export_test.go:7
            cmd/go_test.TestMain(0xc0000a6dc0)
            	/Users/adonovan/w/goroot/src/cmd/go/go_test.go:156 +0x1b10 fp=0xc00004de40 sp=0xc00004d920 pc=0x102d2b230
            main.main()
            	_testmain.go:176 +0x108 fp=0xc00004df30 sp=0xc00004de40 pc=0x102d523c8
            runtime.main()
            	/Users/adonovan/w/goroot/src/runtime/proc.go:290 +0x2b4 fp=0xc00004dfd0 sp=0xc00004df30 pc=0x102447904
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc00004dfd0 sp=0xc00004dfd0 pc=0x102487104
            
            goroutine 2 gp=0xc000004780 m=nil [force gc (idle)]:
            runtime.gopark(0x0?, 0x10360e3e0?, 0xe0?, 0x5f?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000072790 sp=0xc000072770 pc=0x10247ef8c
            runtime.goparkunlock(...)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:468
            runtime.forcegchelper()
            	/Users/adonovan/w/goroot/src/runtime/proc.go:375 +0xb4 fp=0xc0000727d0 sp=0xc000072790 pc=0x102447c24
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc0000727d0 sp=0xc0000727d0 pc=0x102487104
            created by runtime.init.7 in goroutine 1
            	/Users/adonovan/w/goroot/src/runtime/proc.go:363 +0x24
            
            goroutine 3 gp=0xc000004d20 m=nil [GC sweep wait]:
            runtime.gopark(0x1?, 0x0?, 0x0?, 0x0?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000085f70 sp=0xc000085f50 pc=0x10247ef8c
            runtime.goparkunlock(...)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:468
            runtime.bgsweep(0xc000042280)
            	/Users/adonovan/w/goroot/src/runtime/mgcsweep.go:324 +0x178 fp=0xc000085fb0 sp=0xc000085f70 pc=0x102430908
            runtime.gcenable.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:214 +0x20 fp=0xc000085fd0 sp=0xc000085fb0 pc=0x102421d50
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000085fd0 sp=0xc000085fd0 pc=0x102487104
            created by runtime.gcenable in goroutine 1
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:214 +0x6c
            
            goroutine 4 gp=0xc000004f00 m=nil [sleep]:
            runtime.gopark(0xc000110000?, 0x25e5ef7468fe7?, 0x0?, 0x0?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000080f20 sp=0xc000080f00 pc=0x10247ef8c
            runtime.goparkunlock(...)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:468
            runtime.(*scavengerState).sleep(0x103683ca0, 0x40d03c4000000000)
            	/Users/adonovan/w/goroot/src/runtime/mgcscavenge.go:504 +0x108 fp=0xc000080f90 sp=0xc000080f20 pc=0x10242e5f8
            runtime.bgscavenge(0xc000042280)
            	/Users/adonovan/w/goroot/src/runtime/mgcscavenge.go:662 +0x9c fp=0xc000080fb0 sp=0xc000080f90 pc=0x10242e9ac
            runtime.gcenable.gowrap2()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:215 +0x20 fp=0xc000080fd0 sp=0xc000080fb0 pc=0x102421d10
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000080fd0 sp=0xc000080fd0 pc=0x102487104
            created by runtime.gcenable in goroutine 1
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:215 +0xac
            
            goroutine 5 gp=0xc0000054a0 m=nil [GOMAXPROCS updater (idle)]:
            runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000072f70 sp=0xc000072f50 pc=0x10247ef8c
            runtime.goparkunlock(...)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:468
            runtime.updateMaxProcsGoroutine()
            	/Users/adonovan/w/goroot/src/runtime/proc.go:7095 +0xf4 fp=0xc000072fd0 sp=0xc000072f70 pc=0x102456644
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000072fd0 sp=0xc000072fd0 pc=0x102487104
            created by runtime.defaultGOMAXPROCSUpdateEnable in goroutine 1
            	/Users/adonovan/w/goroot/src/runtime/proc.go:7083 +0x48
            
            goroutine 6 gp=0xc000005680 m=nil [finalizer wait]:
            runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000184d80 sp=0xc000184d60 pc=0x10247ef8c
            runtime.runFinalizers()
            	/Users/adonovan/w/goroot/src/runtime/mfinal.go:210 +0x120 fp=0xc000184fd0 sp=0xc000184d80 pc=0x102420d70
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000184fd0 sp=0xc000184fd0 pc=0x102487104
            created by runtime.createfing in goroutine 1
            	/Users/adonovan/w/goroot/src/runtime/mfinal.go:172 +0x78
            
            goroutine 7 gp=0xc000005860 m=nil [cleanup wait]:
            runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000074710 sp=0xc0000746f0 pc=0x10247ef8c
            runtime.goparkunlock(...)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:468
            runtime.(*cleanupQueue).dequeue(0x1036844e0)
            	/Users/adonovan/w/goroot/src/runtime/mcleanup.go:522 +0x160 fp=0xc000074750 sp=0xc000074710 pc=0x10241dae0
            runtime.runCleanups()
            	/Users/adonovan/w/goroot/src/runtime/mcleanup.go:718 +0x3c fp=0xc0000747d0 sp=0xc000074750 pc=0x10241e22c
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc0000747d0 sp=0xc0000747d0 pc=0x102487104
            created by runtime.(*cleanupQueue).createGs in goroutine 1
            	/Users/adonovan/w/goroot/src/runtime/mcleanup.go:672 +0x108
            
            goroutine 23 gp=0xc000104d20 m=nil [GC worker (idle)]:
            runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000513f20 sp=0xc000513f00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc000513fb0 sp=0xc000513f20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc000513fd0 sp=0xc000513fb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000513fd0 sp=0xc000513fd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 24 gp=0xc000104f00 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e914f64c5?, 0x3?, 0x2b?, 0x61?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000512f20 sp=0xc000512f00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc000512fb0 sp=0xc000512f20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc000512fd0 sp=0xc000512fb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000512fd0 sp=0xc000512fd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 25 gp=0xc0001050e0 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e915141a9?, 0x1?, 0xbc?, 0x80?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000511f20 sp=0xc000511f00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc000511fb0 sp=0xc000511f20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc000511fd0 sp=0xc000511fb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000511fd0 sp=0xc000511fd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 26 gp=0xc0001052c0 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e914f66e3?, 0x1?, 0x22?, 0x24?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc000510f20 sp=0xc000510f00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc000510fb0 sp=0xc000510f20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc000510fd0 sp=0xc000510fb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc000510fd0 sp=0xc000510fd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 27 gp=0xc0001054a0 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e91527bf3?, 0x3?, 0x1f?, 0x37?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc0004bbf20 sp=0xc0004bbf00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc0004bbfb0 sp=0xc0004bbf20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc0004bbfd0 sp=0xc0004bbfb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc0004bbfd0 sp=0xc0004bbfd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 28 gp=0xc000105680 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e91528346?, 0x3?, 0x10?, 0xf?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc0004baf20 sp=0xc0004baf00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc0004bafb0 sp=0xc0004baf20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc0004bafd0 sp=0xc0004bafb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc0004bafd0 sp=0xc0004bafd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 29 gp=0xc000105860 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e91514514?, 0x3?, 0x4b?, 0x90?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc0004b9f20 sp=0xc0004b9f00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc0004b9fb0 sp=0xc0004b9f20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc0004b9fd0 sp=0xc0004b9fb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc0004b9fd0 sp=0xc0004b9fd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            goroutine 30 gp=0xc000105a40 m=nil [GC worker (idle)]:
            runtime.gopark(0x25e5e91525490?, 0x1?, 0x5d?, 0x93?, 0x0?)
            	/Users/adonovan/w/goroot/src/runtime/proc.go:462 +0xbc fp=0xc0004b8f20 sp=0xc0004b8f00 pc=0x10247ef8c
            runtime.gcBgMarkWorker(0xc000168620)
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1791 +0xe0 fp=0xc0004b8fb0 sp=0xc0004b8f20 pc=0x1024247b0
            runtime.gcBgMarkStartWorkers.gowrap1()
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x20 fp=0xc0004b8fd0 sp=0xc0004b8fb0 pc=0x1024246b0
            runtime.goexit({})
            	/Users/adonovan/w/goroot/src/runtime/asm_arm64.s:1447 +0x4 fp=0xc0004b8fd0 sp=0xc0004b8fd0 pc=0x102487104
            created by runtime.gcBgMarkStartWorkers in goroutine 22
            	/Users/adonovan/w/goroot/src/runtime/mgc.go:1695 +0x134
            
            r0      0x104
            r1      0x0
            r2      0x9200
            r3      0x0
            r4      0x0
            r5      0xa0
            r6      0x0
            r7      0x0
            r8      0x16da4a7f8
            r9      0x0
            r10     0x0
            r11     0x2
            r12     0x2
            r13     0x0
            r14     0x0
            r15     0x0
            r16     0x131
            r17     0x1fb821500
            r18     0x0
            r19     0x103686508
            r20     0x103686548
            r21     0x1fa7ca320
            r22     0x0
            r23     0x0
            r24     0x9200
            r25     0x9201
            r26     0x9300
            r27     0x10365f000
            r28     0x1036846a0
            r29     0x16da4a870
            lr      0x18c83409c
            sp      0x16da4a7e0
            pc      0x18c7f53cc
            fault   0x18c7f53cc
        script_test.go:163: FAIL: testdata/script/vet_basic.txt:19: go vet -timeformat example.com/x: exit status 2
vcs-test.golang.org rerouted to http://127.0.0.1:58715
https://vcs-test.golang.org rerouted to https://127.0.0.1:58716
--- FAIL: TestScript (0.06s)
    --- FAIL: TestScript/vet_basic (0.00s)
        script_test.go:139: 2026-01-20T20:38:50Z
        script_test.go:141: $WORK=/var/folders/fy/dn6v01n16zjdwsqy_8qfbbxr000_9w/T/cmd-go-test-4149366053/tmpdir1424320636/vet_basic1666059544
        script_test.go:163: 
        script_test.go:163: FAIL: testdata/script/vet_basic.txt:0: context deadline exceeded
vcs-test.golang.org rerouted to http://127.0.0.1:58717
https://vcs-test.golang.org rerouted to https://127.0.0.1:58718
--- FAIL: TestScript (0.05s)
    --- FAIL: TestScript/vet_basic (0.01s)
        script_test.go:139: 2026-01-20T20:38:50Z
        script_test.go:141: $WORK=/var/folders/fy/dn6v01n16zjdwsqy_8qfbbxr000_9w/T/cmd-go-test-4149366053/tmpdir1424320636/vet_basic1815463459
        script_test.go:163: 
        script_test.go:163: FAIL: testdata/script/vet_basic.txt:0: context deadline exceeded
vcs-test.golang.org rerouted to http://127.0.0.1:58719
https://vcs-test.golang.org rerouted to https://127.0.0.1:58720
panic: test timed out after 10m0s
	running tests:
		TestScript (0s)

goroutine 2250 [running]:
testing.(*M).startAlarm.func1()
	/Users/adonovan/w/goroot/src/testing/testing.go:2802 +0x494
created by time.goFunc
	/Users/adonovan/w/goroot/src/time/sleep.go:215 +0x44

goroutine 1 [chan receive]:
testing.(*T).Run(0xc0000f0248, {0x102e2bf2c, 0xa}, 0x10362c980)
	/Users/adonovan/w/goroot/src/testing/testing.go:2109 +0x7dc
testing.runTests.func1(0xc0000f0248)
	/Users/adonovan/w/goroot/src/testing/testing.go:2585 +0x7c
testing.tRunner(0xc0000f0248, 0xc000049578)
	/Users/adonovan/w/goroot/src/testing/testing.go:2036 +0x168
testing.runTests({0x0, 0x0}, {0x102e28856, 0x6}, 0xc000314018, {0x1036c6640, 0x3f, 0x3f}, {0x10e49b9a8?, 0x0?, ...})
	/Users/adonovan/w/goroot/src/testing/testing.go:2583 +0x7a4
testing.(*M).Run(0xc000217a40)
	/Users/adonovan/w/goroot/src/testing/testing.go:2443 +0xb3c
cmd/go_test.TestMain(0xc000217a40)
	/Users/adonovan/w/goroot/src/cmd/go/go_test.go:322 +0x18a8
main.main()
	_testmain.go:176 +0x108

goroutine 38 [IO wait, 9 minutes]:
internal/poll.runtime_pollWait(0x10e24f800, 0x72)
	/Users/adonovan/w/goroot/src/runtime/netpoll.go:351 +0xa0
internal/poll.(*pollDesc).wait(0xc000324620, 0x72, 0x0)
	/Users/adonovan/w/goroot/src/internal/poll/fd_poll_runtime.go:84 +0xb8
internal/poll.(*pollDesc).waitRead(...)
	/Users/adonovan/w/goroot/src/internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Accept(0xc000324600)
	/Users/adonovan/w/goroot/src/internal/poll/fd_unix.go:613 +0x35c
net.(*netFD).accept(0xc000324600)
	/Users/adonovan/w/goroot/src/net/fd_unix.go:150 +0x38
net.(*TCPListener).accept(0xc0004b2340)
	/Users/adonovan/w/goroot/src/net/tcpsock_posix.go:159 +0x40
net.(*TCPListener).Accept(0xc0004b2340)
	/Users/adonovan/w/goroot/src/net/tcpsock.go:387 +0x68
net/http.(*Server).Serve(0xc000288000, {0x10363caa0, 0xc0004b2340})
	/Users/adonovan/w/goroot/src/net/http/server.go:3434 +0x404
net/http.Serve({0x10363caa0, 0xc0004b2340}, {0x103635520, 0x10362cba8})
	/Users/adonovan/w/goroot/src/net/http/server.go:2942 +0xe0
cmd/go_test.TestScript.StartProxy.func4.1()
	/Users/adonovan/w/goroot/src/cmd/go/proxy_test.go:63 +0x48
created by cmd/go_test.TestScript.StartProxy.func4 in goroutine 33
	/Users/adonovan/w/goroot/src/cmd/go/proxy_test.go:62 +0x2b8

goroutine 2279 [IO wait]:
internal/poll.runtime_pollWait(0x10e24f600, 0x72)
	/Users/adonovan/w/goroot/src/runtime/netpoll.go:351 +0xa0
internal/poll.(*pollDesc).wait(0xc0003244a0, 0x72, 0x0)
	/Users/adonovan/w/goroot/src/internal/poll/fd_poll_runtime.go:84 +0xb8
internal/poll.(*pollDesc).waitRead(...)
	/Users/adonovan/w/goroot/src/internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Accept(0xc000324480)
	/Users/adonovan/w/goroot/src/internal/poll/fd_unix.go:613 +0x35c
net.(*netFD).accept(0xc000324480)
	/Users/adonovan/w/goroot/src/net/fd_unix.go:150 +0x38
net.(*TCPListener).accept(0xc000290140)
	/Users/adonovan/w/goroot/src/net/tcpsock_posix.go:159 +0x40
net.(*TCPListener).Accept(0xc000290140)
	/Users/adonovan/w/goroot/src/net/tcpsock.go:387 +0x68
net/http.(*Server).Serve(0xc000288100, {0x10363caa0, 0xc000290140})
	/Users/adonovan/w/goroot/src/net/http/server.go:3434 +0x404
net/http/httptest.(*Server).goServe.func1()
	/Users/adonovan/w/goroot/src/net/http/httptest/server.go:341 +0x9c
created by net/http/httptest.(*Server).goServe in goroutine 2278
	/Users/adonovan/w/goroot/src/net/http/httptest/server.go:339 +0x98

goroutine 2280 [IO wait]:
internal/poll.runtime_pollWait(0x10e24f400, 0x72)
	/Users/adonovan/w/goroot/src/runtime/netpoll.go:351 +0xa0
internal/poll.(*pollDesc).wait(0xc000324520, 0x72, 0x0)
	/Users/adonovan/w/goroot/src/internal/poll/fd_poll_runtime.go:84 +0xb8
internal/poll.(*pollDesc).waitRead(...)
	/Users/adonovan/w/goroot/src/internal/poll/fd_poll_runtime.go:89
internal/poll.(*FD).Accept(0xc000324500)
	/Users/adonovan/w/goroot/src/internal/poll/fd_unix.go:613 +0x35c
net.(*netFD).accept(0xc000324500)
	/Users/adonovan/w/goroot/src/net/fd_unix.go:150 +0x38
net.(*TCPListener).accept(0xc000290180)
	/Users/adonovan/w/goroot/src/net/tcpsock_posix.go:159 +0x40
net.(*TCPListener).Accept(0xc000290180)
	/Users/adonovan/w/goroot/src/net/tcpsock.go:387 +0x68
crypto/tls.(*listener).Accept(0xc0000b43a8)
	/Users/adonovan/w/goroot/src/crypto/tls/tls.go:78 +0x40
net/http.(*Server).Serve(0xc000288200, {0x10363cce0, 0xc0000b43a8})
	/Users/adonovan/w/goroot/src/net/http/server.go:3434 +0x404
net/http/httptest.(*Server).goServe.func1()
	/Users/adonovan/w/goroot/src/net/http/httptest/server.go:341 +0x9c
created by net/http/httptest.(*Server).goServe in goroutine 2278
	/Users/adonovan/w/goroot/src/net/http/httptest/server.go:339 +0x98

goroutine 2278 [runnable]:
regexp.(*inputString).index(0xc0005b8130, 0xc000110d20, 0x0)
	/Users/adonovan/w/goroot/src/regexp/regexp.go:400 +0xb8
regexp.(*Regexp).backtrack(0xc000110d20, {0x0, 0x0, 0x0}, {0xc0002f8b20, 0xa}, 0x0, 0x0, {0x1036f8b20, 0x0, ...})
	/Users/adonovan/w/goroot/src/regexp/backtrack.go:340 +0x3a4
regexp.(*Regexp).doExecute(0xc000110d20, {0x0, 0x0}, {0x0, 0x0, 0x0}, {0xc0002f8b20, 0xa}, 0x0, 0x0, ...)
	/Users/adonovan/w/goroot/src/regexp/exec.go:535 +0x2bc
regexp.(*Regexp).doMatch(...)
	/Users/adonovan/w/goroot/src/regexp/exec.go:514
regexp.(*Regexp).MatchString(...)
	/Users/adonovan/w/goroot/src/regexp/regexp.go:507
testing/internal/testdeps.TestDeps.MatchString({}, {0xc0001b82b6, 0xa}, {0xc0002f8b20, 0xa})
	/Users/adonovan/w/goroot/src/testing/internal/testdeps/deps.go:47 +0x1cc
testing.simpleMatch.matches(...)
	/Users/adonovan/w/goroot/src/testing/match.go:130
testing.(*matcher).fullName(0xc000290080, 0xc0000f0488, {0xc0004e4160, 0xe})
	/Users/adonovan/w/goroot/src/testing/match.go:101 +0x1a8
testing.(*T).Run(0xc0000f0488, {0xc0004e4160, 0xe}, 0xc000512370)
	/Users/adonovan/w/goroot/src/testing/testing.go:2059 +0xac
cmd/go_test.TestScript(0xc0000f0488)
	/Users/adonovan/w/goroot/src/cmd/go/script_test.go:112 +0x638
testing.tRunner(0xc0000f0488, 0x10362c980)
	/Users/adonovan/w/goroot/src/testing/testing.go:2036 +0x168
created by testing.(*T).Run in goroutine 1
	/Users/adonovan/w/goroot/src/testing/testing.go:2101 +0x7c0
FAIL	cmd/go	600.628s
FAIL

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

2026-01-15 18:35 go1.26-darwin-amd64-race release-branch.go1.26@bba24719 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2026-01-22T06:47:52Z
    script_test.go:141: $WORK=/Volumes/Work/s/w/ir/x/t/cmd-go-test-957604878/tmpdir3442308206/vet_basic2242721392
    script_test.go:163: 
        PATH=/Volumes/Work/s/w/ir/x/t/cmd-go-test-957604878/tmpdir3442308206/testbin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/cache/tools/bin:/Volumes/Work/s/w/ir/bbagent_utility_packages:/Volumes/Work/s/w/ir/bbagent_utility_packages/bin:/Volumes/Work/s/w/ir/cipd_bin_packages:/Volumes/Work/s/w/ir/cipd_bin_packages/bin:/Volumes/Work/s/w/ir/cache/cipd_client:/Volumes/Work/s/w/ir/cache/cipd_client/bin:/Volumes/Work/s/cipd_cache/bin:/opt/infra-tools:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/usr/local/git/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=amd64
...
        go vet -diff flag requires -fix
        [exit status 1]
        > stderr 'go vet -diff flag requires -fix'
        matched: go vet -diff flag requires -fix
        # go fix applies the fix suite fixes. (1.439s)
        > go fix example.com/x
        [stderr]
        internal/byteorder: /Volumes/Work/s/w/ir/x/w/goroot/pkg/tool/darwin_amd64/fix: signal: segmentation fault
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:50: go fix example.com/x: exit status 1
--- FAIL: TestScript/vet_basic (12.51s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

2026-01-22 21:04 gotip-darwin-amd64-race go@858d4bf8 cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2026-01-23T04:48:36Z
    script_test.go:141: $WORK=/Volumes/Work/s/w/ir/x/t/cmd-go-test-323069828/tmpdir3561123157/vet_basic3157735263
    script_test.go:163: 
        PATH=/Volumes/Work/s/w/ir/x/t/cmd-go-test-323069828/tmpdir3561123157/testbin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/cache/tools/bin:/Volumes/Work/s/w/ir/bbagent_utility_packages:/Volumes/Work/s/w/ir/bbagent_utility_packages/bin:/Volumes/Work/s/w/ir/cipd_bin_packages:/Volumes/Work/s/w/ir/cipd_bin_packages/bin:/Volumes/Work/s/w/ir/cache/cipd_client:/Volumes/Work/s/w/ir/cache/cipd_client/bin:/Volumes/Work/s/cipd_cache/bin:/opt/infra-tools:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/usr/local/git/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=amd64
...
        go vet -diff flag requires -fix
        [exit status 1]
        > stderr 'go vet -diff flag requires -fix'
        matched: go vet -diff flag requires -fix
        # go fix applies the fix suite fixes. (2.078s)
        > go fix example.com/x
        [stderr]
        internal/runtime/atomic: /Volumes/Work/s/w/ir/x/w/goroot/pkg/tool/darwin_amd64/fix: signal: segmentation fault
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:50: go fix example.com/x: exit status 1
--- FAIL: TestScript/vet_basic (17.39s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/go" && test == "TestScript/vet_basic"

2026-01-22 15:30 gotip-darwin-amd64-race go@adb64adf cmd/go.TestScript/vet_basic (log)

=== RUN   TestScript/vet_basic
=== PAUSE TestScript/vet_basic
=== CONT  TestScript/vet_basic
    script_test.go:139: 2026-01-23T11:50:17Z
    script_test.go:141: $WORK=/Volumes/Work/s/w/ir/x/t/cmd-go-test-2813207959/tmpdir729622505/vet_basic3393950116
    script_test.go:163: 
        PATH=/Volumes/Work/s/w/ir/x/t/cmd-go-test-2813207959/tmpdir729622505/testbin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/x/w/goroot/bin:/Volumes/Work/s/w/ir/cache/tools/bin:/Volumes/Work/s/w/ir/bbagent_utility_packages:/Volumes/Work/s/w/ir/bbagent_utility_packages/bin:/Volumes/Work/s/w/ir/cipd_bin_packages:/Volumes/Work/s/w/ir/cipd_bin_packages/bin:/Volumes/Work/s/w/ir/cache/cipd_client:/Volumes/Work/s/w/ir/cache/cipd_client/bin:/Volumes/Work/s/cipd_cache/bin:/opt/infra-tools:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/usr/local/git/bin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=amd64
...
        					}
        				]
        			}
        		]
        	}
        }
        [stderr]
        internal/godebug: /Volumes/Work/s/w/ir/x/w/goroot/pkg/tool/darwin_amd64/fix: signal: segmentation fault
    script_test.go:163: FAIL: testdata/script/vet_basic.txt:63: go fix -json example.com/x: exit status 1
--- FAIL: TestScript/vet_basic (18.76s)

— watchflakes