add message for resolution failure because wrong namespace#71419

Merged

bors merged 2 commits intorust-lang:masterfrom

contrun:wrong-namespace-rustc-resolve

Apr 27, 2020

Commits on Apr 22, 2020

add message for resolution failure because wrong namespace
contrun
committed

Commits on Apr 26, 2020

use defkind.descr in wrong namespace resolve failure
contrun
committed