When testing a package, `//go:debug` lines in the `*_test.go`
files are treated as directives for the test's main package.
In any other context, `//go:debug` lines are ignored by the toolchain;
`go` `vet` reports such lines as misplaced.

## GODEBUG History {#history}

This section documents the GODEBUG settings introduced and removed in each major Go release
for compatibility reasons.

- Removed defunct `make vet` target, please use `make lint` instead ([#132509](https://github.com/kubernetes/kubernetes/pull/132509), [@yongruilin](https://github.com/yongruilin)) [SIG Testing]