error: inherent impls cannot be negative
  --> $DIR/syntax-trait-polarity.rs:7:1
   |
LL | impl !TestType {}
   | ^^^^^^^^^^^^^^^^^

error[E0198]: negative impls cannot be unsafe
  --> $DIR/syntax-trait-polarity.rs:12:1
   |
LL | unsafe impl !Send for TestType {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: inherent impls cannot be negative
  --> $DIR/syntax-trait-polarity.rs:19:1
   |
LL | impl<T> !TestType2<T> {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^

error[E0198]: negative impls cannot be unsafe
  --> $DIR/syntax-trait-polarity.rs:22:1
   |
LL | unsafe impl<T> !Send for TestType2<T> {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0192]: negative impls are only allowed for auto traits (e.g., `Send` and `Sync`)
  --> $DIR/syntax-trait-polarity.rs:14:1
   |
LL | impl !TestTrait for TestType {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0192]: negative impls are only allowed for auto traits (e.g., `Send` and `Sync`)
  --> $DIR/syntax-trait-polarity.rs:24:1
   |
LL | impl<T> !TestTrait for TestType2<T> {}
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0192, E0198.
For more information about an error, try `rustc --explain E0192`.