Use PredicateObligations instead of Predicates

Keep more information about trait binding failures.
2020-03-03 15:07:04 -08:00 · 2020-03-03 15:07:04 -08:00 · bd7ea5441e
commit bd7ea5441e
parent 485c5fb6e1
90 changed files with 280 additions and 141 deletions
--- a/src/test/ui/error-codes/E0275.stderr
+++ b/src/test/ui/error-codes/E0275.stderr
@ -2,7 +2,7 @@ error[E0275]: overflow evaluating the requirement `Bar<Bar<Bar<Bar<Bar<Bar<Bar<B
  --> $DIR/E0275.rs:5:33
   |
 LL | trait Foo {}
-   | --------- required by `Foo`
+   | --------- required by this bound in `Foo`
 ...
 LL | impl<T> Foo for T where Bar<T>: Foo {}
   |                                 ^^^