When starting a new goroutine, it is easy to forget utils.Safe, and
nothing tells us until a panic in it leaves somebody's terminal
broken.
The test parses our source files and reports go statements that don't
run utils.Safe. It also reports functions given to time.AfterFunc or
to a Go method, such as errgroup.Group.Go, that aren't wrapped with
utils.SafeFunc or utils.SafeFuncWithError. It only looks at the
syntax; this is good enough because the names involved are
distinctive.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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