Remove async_await gates from tests.

2019-08-20T01:08:42+00:00

revamp how we handle elision in async fn

2019-08-12T21:18:26+00:00

We now always make fresh lifetimne parameters for all elided lifetimes, whether they are in the inputs or outputs. But then we generate `'_` in the case of elided lifetimes from the outputs. Example: ```rust async fn foo<'a>(x: &'a u32) -> &u32 { .. } ``` becomes ```rust type Foo<'a, 'b> = impl Future; fn foo<'a>(x: &'a u32) -> Foo<'a, '_> ```

lifetime elision: add non-conforming-to-fn tests.

2019-08-08T13:57:32+00:00

rust/src/test/ui/self/elision/multiple-ref-self-async.rs, branch 1.44.0

Remove async_await gates from tests.

revamp how we handle elision in async fn

lifetime elision: add non-conforming-to-fn tests.