bors bea0372a1a Auto merge of #63752 - Centril:rollup-nlxwety, r=Centril
Rollup of 4 pull requests

Successful merges:

 - #62497 (Fix double resolving custom libdir)
 - #63209 (Stabilize `async_await` in Rust 1.39.0)
 - #63746 (Cherry-pick src/test changes with Centril's changes)
 - #63750 (rustc_metadata: replace LazySeq<T> with Lazy<[T]>.)

Failed merges:

r? @ghost
2019-08-20 18:33:16 +00:00
..
2019-08-14 05:39:53 -04:00
2019-08-15 22:58:57 +03:00
2019-08-14 05:39:53 -04:00
2019-08-11 12:49:02 +01:00
2019-08-20 02:38:02 +02:00
2019-08-15 22:58:57 +03:00