More informative diagnotic from `x.py test` attempt atop beta checkout#83172

Merged

bors merged 1 commit intorust-lang:masterfrom pnkfelix:bootstrap-tell-me-what-to-do-about-tidy-on-beta

Mar 16, 2021

Commits on Mar 16, 2021

Make bootstrap be more informative when one does `x.py test` on a beta checkout without other mods.
pnkfelix
committed