cp go.work.badgodebug.txt go.work
! go list
stderr '^go.work:3: unknown godebug "foo"$'

cp go.work.unparsable.txt go.work
! go list
stderr '^go.work:5: unknown directive: notadirective'

cp go.work.firstlineerr.txt go.work
! go list
stderr '^go.work:1: unknown godebug "bar"$'

cp go.work.firsterrlisted.txt go.work
! go list
stderr '^go.work:1: unknown godebug "baz"$'

-- foo/go.mod --