x/tools: spurious test failures due to missing go command on plan9

[gopherbot]

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestCallgraph
    main_test.go:37: go tool not available: exec: "go": executable file not found in $path
--- FAIL: TestCallgraph (0.10s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

2024-05-30 17:27 x_tools-go1.22-plan9-arm tools@2e977ddd release-branch.go1.22@74565750 x/tools/cmd/callgraph.TestCallgraph (log)

=== RUN   TestCallgraph
    main_test.go:37: go tool not available: exec: "go": executable file not found in $path
--- FAIL: TestCallgraph (0.10s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

2024-05-30 16:14 x_tools-go1.22-plan9-arm tools@8d54ca12 release-branch.go1.22@74565750 x/tools/cmd/callgraph.TestCallgraph (log)

=== RUN   TestCallgraph
    main_test.go:37: go tool not available: exec: "go": executable file not found in $path
--- FAIL: TestCallgraph (0.10s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

2024-06-04 14:43 x_tools-go1.21-windows-arm64 tools@20880830 release-branch.go1.21@9488a444 x/tools/cmd/callgraph.TestCallgraph (log)

=== RUN   TestCallgraph
    main_test.go:81: err: exit status 2: stderr: runtime: failed to create new OS thread (have 13 already; errno=1455)
        fatal error: runtime.newosproc
        
        runtime stack:
        runtime.throw({0x7ff6b9a44fcc?, 0x0?})
        	runtime/panic.go:1077 +0x40 fp=0x1d8e3ffb00 sp=0x1d8e3ffad0 pc=0x7ff6b947a8f0
        runtime.newosproc(0x1d8e3ffb98?)
        	runtime/os_windows.go:890 +0xec fp=0x1d8e3ffb60 sp=0x1d8e3ffb00 pc=0x7ff6b94777ac
        runtime.newm1(0x40003ca400)
...
        os/exec.(*Cmd).Start.func2(0x0?)
        	os/exec/exec.go:717 +0x34 fp=0x4000545fb0 sp=0x4000545f40 pc=0x7ff6b9567a94
        os/exec.(*Cmd).Start.func3()
        	os/exec/exec.go:729 +0x34 fp=0x4000545fd0 sp=0x4000545fb0 pc=0x7ff6b9567a24
        runtime.goexit()
        	runtime/asm_arm64.s:1197 +0x4 fp=0x4000545fd0 sp=0x4000545fd0 pc=0x7ff6b94ae0a4
        created by os/exec.(*Cmd).Start in goroutine 326
        	os/exec/exec.go:716 +0x828
        
--- FAIL: TestCallgraph (4.19s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

2024-07-11 15:04 x_tools-gotip-openbsd-ppc64 tools@ef4d0833 go@a71bb570 x/tools/cmd/callgraph.TestCallgraph (log)

=== RUN   TestCallgraph
    main_test.go:37: go tool not available: /home/swarming/.swarming/w/ir/x/w/goroot/bin/go build -o /dev/null /home/swarming/.swarming/w/ir/x/t/testenv-2445791106/main.go: exit status 1
        go: error obtaining buildID for go tool compile: signal: segmentation fault (core dumped)
--- FAIL: TestCallgraph (1.81s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

2025-04-08 01:33 x_tools-go1.23-windows-arm64 tools@456962ef release-branch.go1.23@7a2cfb70 x/tools/cmd/callgraph.TestCallgraph (log)

=== RUN   TestCallgraph
    main_test.go:80: err: exit status 2: stderr: runtime: VirtualAlloc of 32768 bytes failed with errno=1455
        fatal error: out of memory
        
        runtime stack:
        runtime.throw({0x7ff60ee4092a?, 0x4000570000?})
        	runtime/panic.go:1073 +0x38 fp=0x6ed3bff6d0 sp=0x6ed3bff6a0 pc=0x7ff60e830008
        runtime.sysUsedOS(0x4000570000, 0x8000)
        	runtime/mem_windows.go:83 +0x178 fp=0x6ed3bff730 sp=0x6ed3bff6d0 pc=0x7ff60e7d6428
        runtime.sysUsed(...)
...
        os/exec.(*Cmd).Start.func2(0x0?)
        	os/exec/exec.go:733 +0x34 fp=0x40003f7fb0 sp=0x40003f7f40 pc=0x7ff60e903024
        os/exec.(*Cmd).Start.gowrap1()
        	os/exec/exec.go:745 +0x30 fp=0x40003f7fd0 sp=0x40003f7fb0 pc=0x7ff60e902fb0
        runtime.goexit({})
        	runtime/asm_arm64.s:1223 +0x4 fp=0x40003f7fd0 sp=0x40003f7fd0 pc=0x7ff60e838554
        created by os/exec.(*Cmd).Start in goroutine 467
        	os/exec/exec.go:732 +0x840
        
--- FAIL: TestCallgraph (5.83s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/tools/cmd/callgraph" && test == "TestCallgraph"

2025-04-08 01:33 x_tools-gotip-windows-arm64 tools@456962ef go@58b68911 x/tools/cmd/callgraph.TestCallgraph (log)

=== RUN   TestCallgraph
    main_test.go:80: err: exit status 1: stderr: go: error obtaining buildID for go tool link: fork/exec C:\Users\swarming\.swarming\w\ir\x\w\goroot\pkg\tool\windows_arm64\link.exe: The parameter is incorrect.
        
--- FAIL: TestCallgraph (6.33s)

— watchflakes