auto merge of #20154 : P1start/rust/qualified-assoc-type-generics, r=nikomatsakis

This modifies `Parser::eat_lt` to always split up `<<`s, instead of doing so only when a lifetime name followed or the `force` parameter (now removed) was `true`. This is because `Foo<<TYPE` is now a valid start to a type, whereas previously only `Foo<<LIFETIME` was valid.

This is a [breaking-change]. Change code that looks like this:

```rust
let x = foo as bar << 13;
```

to use parentheses, like this:

```rust
let x = (foo as bar) << 13;
```

Closes #17362.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libtime/lib.rs b/src/libtime/lib.rs
index bc5d0c21aae..b2aca684314 100644
--- a/src/libtime/lib.rs
+++ b/src/libtime/lib.rs
@@ -149,8 +149,8 @@ pub fn get_time() -> Timespec {
         // A FILETIME contains a 64-bit value representing the number of
         // hectonanosecond (100-nanosecond) intervals since 1601-01-01T00:00:00Z.
         // http://support.microsoft.com/kb/167296/en-us
-        let ns_since_1601 = ((time.dwHighDateTime as u64 << 32) |
-                             (time.dwLowDateTime  as u64 <<  0)) / 10;
+        let ns_since_1601 = (((time.dwHighDateTime as u64) << 32) |
+                             ((time.dwLowDateTime  as u64) <<  0)) / 10;
         let ns_since_1970 = ns_since_1601 - NANOSECONDS_FROM_1601_TO_1970;
 
         ((ns_since_1970 / 1000000) as i64,