error: associated type constraints not allowed on negative bounds
  --> $DIR/associated-constraints.rs:8:19
   |
LL | fn test<T: !Trait<Assoc = i32>>() {}
   |                   ^^^^^^^^^^^

error: associated type constraints not allowed on negative bounds
  --> $DIR/associated-constraints.rs:11:31
   |
LL | fn test2<T>() where T: !Trait<Assoc = i32> {}
   |                               ^^^^^^^^^^^

error: associated type constraints not allowed on negative bounds
  --> $DIR/associated-constraints.rs:14:20
   |
LL | fn test3<T: !Trait<Assoc: Send>>() {}
   |                    ^^^^^^^^^^^

error: associated type constraints not allowed on negative bounds
  --> $DIR/associated-constraints.rs:17:31
   |
LL | fn test4<T>() where T: !Trait<Assoc: Send> {}
   |                               ^^^^^^^^^^^

warning: the feature `negative_bounds` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/associated-constraints.rs:1:12
   |
LL | #![feature(negative_bounds, associated_type_bounds)]
   |            ^^^^^^^^^^^^^^^
   |
   = note: `#[warn(incomplete_features)]` on by default

error: aborting due to 4 previous errors; 1 warning emitted