cmd/cgo/internal/testerrors: TestToleratesOptimizationFlag/-O failures about go

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/cgo/internal/testerrors" && test == "TestToleratesOptimizationFlag/-O"

2024-04-25 17:49 gotip-darwin-amd64_13 go@fd99157f cmd/cgo/internal/testerrors.TestToleratesOptimizationFlag/-O (log)

=== RUN   TestToleratesOptimizationFlag/-O
=== PAUSE TestToleratesOptimizationFlag/-O
=== CONT  TestToleratesOptimizationFlag/-O
    errors_test.go:158: `go build testdata/issue14669.go`: exit status 1:
        command-line-arguments: /Users/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/darwin_amd64/cgo: exit status 2
--- FAIL: TestToleratesOptimizationFlag/-O (5.02s)

— watchflakes