Before this commit, the mere presence of files with certain names in local package directories would make the build fail (see nonmodulefiles_test.go). With this commit, we now record the buildinfo and buildid of all built Go programs of this gokrazy instance. related to https://github.com/gokrazy/gokrazy/issues/297 fixes https://github.com/gokrazy/gokrazy/issues/299