error: relaxing a default bound only does something for `?Sized`; all other traits are not bound by default
  --> $DIR/maybe-polarity-pass.rs:12:20
   |
LL | fn bar<T: ?Sized + ?Trait2 + ?Trait1 + ?Trait4>(_: &T) {}
   |                    ^^^^^^^

error: relaxing a default bound only does something for `?Sized`; all other traits are not bound by default
  --> $DIR/maybe-polarity-pass.rs:12:30
   |
LL | fn bar<T: ?Sized + ?Trait2 + ?Trait1 + ?Trait4>(_: &T) {}
   |                              ^^^^^^^

error: relaxing a default bound only does something for `?Sized`; all other traits are not bound by default
  --> $DIR/maybe-polarity-pass.rs:12:40
   |
LL | fn bar<T: ?Sized + ?Trait2 + ?Trait1 + ?Trait4>(_: &T) {}
   |                                        ^^^^^^^

error: aborting due to 3 previous errors