cmd/link: TestMachOBuildVersion failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/link" && test == "TestMachOBuildVersion"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestMachOBuildVersion
=== PAUSE TestMachOBuildVersion
=== CONT  TestMachOBuildVersion
    link_test.go:378: [/home/swarming/.swarming/w/ir/x/w/goroot/bin/go build -ldflags=-linkmode=internal -o /home/swarming/.swarming/w/ir/x/t/TestMachOBuildVersion4090300795/001/main /home/swarming/.swarming/w/ir/x/t/TestMachOBuildVersion4090300795/001/main.go]: exit status 1:
        go: error obtaining buildID for go tool link: fork/exec /home/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/netbsd_arm/link: bad file descriptor
--- FAIL: TestMachOBuildVersion (268.03s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/link" && test == "TestMachOBuildVersion"

2024-12-09 15:27 gotip-netbsd-arm go@e79b2e1e cmd/link.TestMachOBuildVersion (log)

=== RUN   TestMachOBuildVersion
=== PAUSE TestMachOBuildVersion
=== CONT  TestMachOBuildVersion
    link_test.go:378: [/home/swarming/.swarming/w/ir/x/w/goroot/bin/go build -ldflags=-linkmode=internal -o /home/swarming/.swarming/w/ir/x/t/TestMachOBuildVersion4090300795/001/main /home/swarming/.swarming/w/ir/x/t/TestMachOBuildVersion4090300795/001/main.go]: exit status 1:
        go: error obtaining buildID for go tool link: fork/exec /home/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/netbsd_arm/link: bad file descriptor
--- FAIL: TestMachOBuildVersion (268.03s)

— watchflakes

[prattmic]

Duplicate of #63444.

@cherrymui do you know why this didn't match the pattern on #63444? It looks like a match to me.

[cherrymui]

Not sure. The log ~ matching seems not working as expected lately. Perhaps something changed on LUCI and watchflakes didn't pick the log correctly. I'll look into it.

[cherrymui]

Hmmm, the log field's content is the stderr, https://logs.chromium.org/logs/golang/buildbucket/cr-buildbucket/8729016585710363009/+/u/stderr?format=raw . I updated the pattern on #63444 (to include another match not from log) and it should match there now.

Perhaps watchflakes should have two fields, log matches the go tool dist test -json output (https://logs.chromium.org/logs/golang/buildbucket/cr-buildbucket/8729016585710363009/+/u/step/9/log/2) (I'm pretty sure it was the case some time ago), and a new stderr field that matches the stderr?