cmd/link: TestFlagS failures

[gopherbot]

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

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestFlagS
=== PAUSE TestFlagS
=== CONT  TestFlagS
    link_test.go:1361: build (linkmode=external) failed: exit status 1
        go: error obtaining buildID for go tool compile: fork/exec /home/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/openbsd_amd64/compile: resource temporarily unavailable
--- FAIL: TestFlagS (28.41s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

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

2024-03-21 20:08 gotip-openbsd-amd64 go@0ae8468b cmd/link.TestFlagS (log)

=== RUN   TestFlagS
=== PAUSE TestFlagS
=== CONT  TestFlagS
    link_test.go:1361: build (linkmode=external) failed: exit status 1
        go: error obtaining buildID for go tool compile: fork/exec /home/swarming/.swarming/w/ir/x/w/goroot/pkg/tool/openbsd_amd64/compile: resource temporarily unavailable
--- FAIL: TestFlagS (28.41s)

— watchflakes

[cherrymui]

Dup of #66474.