cmd/go: ignore irrelevant 'go test' failure in TestGoTestRaceInstallCgo

This test runs 'go test -race -i runtime/race' and checks that it did
not overwrite cmd/cgo.

If GOROOT/pkg is read-only and GOROOT/pkg/$GOOS_$GOARCH_race is not
already populated, as are the conditions if the Go toolchain was
installed from source as root using 'make.bash', then 'go test -race
-i' itself will fail because it cannot install packages to GOROOT/pkg.

However, such a failure is not relevant to the test: even if 'go test
-race -i' fails, we can still verify that it did not incidentally
overwrite cmd/cgo.

Updates #28387
Updates #30316

Change-Id: Iff2f75a0aeb4c926290ac3062c83695604522078
Reviewed-on: https://go-review.googlesource.com/c/go/+/207959
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
1 file changed
tree: a69c3635f90b906968d6f036f80b45c0401724a0
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
  18. SECURITY.md
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