script/test-race runs go test -race in a digest-pinned Debian golang
image that has gcc, since the detector needs cgo and the build keeps it
off. The checkout is mounted read-only, the tests run as nobody so the
tests that make a file unreadable still see the read fail, and the
container is removed afterwards. It is not part of make check. The
detector found no races.
Model: opus-5-5
