os: TestStartProcess failures

[gopherbot]

#!watchflakes
default <- pkg == "os" && test == "TestStartProcess"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestStartProcess
=== PAUSE TestStartProcess
=== CONT  TestStartProcess
    os_test.go:1250: Can't find pwd: exec: "pwd": executable file not found in $PATH
--- FAIL: TestStartProcess (0.00s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "os" && test == "TestStartProcess"

2024-04-22 15:29 gotip-darwin-amd64-nocgo go@734fd7a9 os.TestStartProcess (log)

=== RUN   TestStartProcess
=== PAUSE TestStartProcess
=== CONT  TestStartProcess
    os_test.go:1250: Can't find pwd: exec: "pwd": executable file not found in $PATH
--- FAIL: TestStartProcess (0.00s)

— watchflakes