cmd/go: TestScript/mod_tidy_convergence_loop failures

[gopherbot]

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

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestScript/mod_tidy_convergence_loop
=== PAUSE TestScript/mod_tidy_convergence_loop
=== CONT  TestScript/mod_tidy_convergence_loop
    script_test.go:135: 2024-08-21T19:50:51Z
    script_test.go:137: $WORK=/home/swarming/.swarming/w/ir/x/t/cmd-go-test-3420655505/tmpdir432322072/mod_tidy_convergence_loop2580139455
    script_test.go:159: 
        PATH=/home/swarming/.swarming/w/ir/x/t/cmd-go-test-3420655505/tmpdir432322072/testbin:/home/swarming/.swarming/w/ir/x/w/goroot/bin:/home/swarming/.swarming/w/ir/x/w/goroot/bin:/home/swarming/.swarming/w/ir/x/w/goroot/bin:/home/swarming/.swarming/w/ir/cache/tools/bin:/home/swarming/.swarming/w/ir/bbagent_utility_packages:/home/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/home/swarming/.swarming/w/ir/cipd_bin_packages:/home/swarming/.swarming/w/ir/cipd_bin_packages/bin:/home/swarming/.swarming/w/ir/cache/cipd_client:/home/swarming/.swarming/w/ir/cache/cipd_client/bin:/home/swarming/.swarming/cipd_cache/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=riscv64
...
        > cp go.mod go.mod.orig
        # 'go mod tidy' without -e should fail without modifying go.mod,
        # because it cannot resolve x, y, and z simultaneously. (0.043s)
        > ! go mod tidy
        [signal: segmentation fault]
        > cmp go.mod go.mod.orig
        > stderr '^go: finding module for package example\.net/w$'
    script_test.go:159: FAIL: testdata/script/mod_tidy_convergence_loop.txt:47: stderr '^go: finding module for package example\.net/w$': no match for `(?m)^go: finding module for package example\.net/w$` in stderr
    script_test.go:401: go was invoked but no counters were incremented
--- FAIL: TestScript/mod_tidy_convergence_loop (0.10s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

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

2024-08-21 17:05 go1.23-linux-riscv64 release-branch.go1.23@3c934055 cmd/go.TestScript/mod_tidy_convergence_loop (log)

=== RUN   TestScript/mod_tidy_convergence_loop
=== PAUSE TestScript/mod_tidy_convergence_loop
=== CONT  TestScript/mod_tidy_convergence_loop
    script_test.go:135: 2024-08-21T19:50:51Z
    script_test.go:137: $WORK=/home/swarming/.swarming/w/ir/x/t/cmd-go-test-3420655505/tmpdir432322072/mod_tidy_convergence_loop2580139455
    script_test.go:159: 
        PATH=/home/swarming/.swarming/w/ir/x/t/cmd-go-test-3420655505/tmpdir432322072/testbin:/home/swarming/.swarming/w/ir/x/w/goroot/bin:/home/swarming/.swarming/w/ir/x/w/goroot/bin:/home/swarming/.swarming/w/ir/x/w/goroot/bin:/home/swarming/.swarming/w/ir/cache/tools/bin:/home/swarming/.swarming/w/ir/bbagent_utility_packages:/home/swarming/.swarming/w/ir/bbagent_utility_packages/bin:/home/swarming/.swarming/w/ir/cipd_bin_packages:/home/swarming/.swarming/w/ir/cipd_bin_packages/bin:/home/swarming/.swarming/w/ir/cache/cipd_client:/home/swarming/.swarming/w/ir/cache/cipd_client/bin:/home/swarming/.swarming/cipd_cache/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
        HOME=/no-home
        CCACHE_DISABLE=1
        GOARCH=riscv64
...
        > cp go.mod go.mod.orig
        # 'go mod tidy' without -e should fail without modifying go.mod,
        # because it cannot resolve x, y, and z simultaneously. (0.043s)
        > ! go mod tidy
        [signal: segmentation fault]
        > cmp go.mod go.mod.orig
        > stderr '^go: finding module for package example\.net/w$'
    script_test.go:159: FAIL: testdata/script/mod_tidy_convergence_loop.txt:47: stderr '^go: finding module for package example\.net/w$': no match for `(?m)^go: finding module for package example\.net/w$` in stderr
    script_test.go:401: go was invoked but no counters were incremented
--- FAIL: TestScript/mod_tidy_convergence_loop (0.10s)

— watchflakes