async/await: improve not-send errors, part 2#65345

Merged

bors merged 3 commits intorust-lang:masterfrom davidtwco:issue-64130-async-send-sync-error-improvements

Dec 11, 2019

+502-147

Commits on Dec 8, 2019

Commits on Dec 11, 2019

erase regions instead of using builtin_deref
Nicholas Matsakis
committed