Don't emit "unused extern crate" warnings for `extern crate foo as _;`#53479

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bors merged 1 commit intorust-lang:masterfrom

joshtriplett:underscore-means-unused

Aug 30, 2018

Commits on Aug 29, 2018

Don't emit "unused extern crate" warnings for `extern crate foo as _;`
joshtriplett
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