E0277 needs to be updated to new format

[sophiajt]

From: src/test/compile-fail/associated-types-ICE-when-projecting-out-of-err.rs

Error E0277 needs a span_label, updating it from:

error[E0277]: the trait bound `(): Add<A>` is not satisfied
  --> src/test/compile-fail/associated-types-ICE-when-projecting-out-of-err.rs:33:9
   |
33 |     r = r + a;
   |         ^^^^^

to:

error[E0277]: the trait bound `(): Add<A>` is not satisfied
  --> src/test/compile-fail/associated-types-ICE-when-projecting-out-of-err.rs:33:9
   |
33 |     r = r + a;
   |         ^^^^^ trait `(): Add<A>` not satisfied

Note: looks like there are a bunch of tests that will need to be updated when this is fixed. You can "git grep E0277" to see them.