error: `?Trait` is not permitted in trait object types
  --> $DIR/trait-object-trait-parens.rs:8:24
   |
LL |     let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
   |                        ^^^^^^^^

error: `?Trait` is not permitted in trait object types
  --> $DIR/trait-object-trait-parens.rs:12:17
   |
LL |     let _: Box<(?Sized) + (for<'a> Trait<'a>) + (Obj)>;
   |                 ^^^^^^

error: `?Trait` is not permitted in trait object types
  --> $DIR/trait-object-trait-parens.rs:16:46
   |
LL |     let _: Box<(for<'a> Trait<'a>) + (Obj) + (?Sized)>;
   |                                              ^^^^^^^^

warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/trait-object-trait-parens.rs:8:16
   |
LL |     let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (Obj) + (?Sized) + (for<'a> Trait<'a>)`
   |
   = note: `#[warn(bare_trait_objects)]` on by default

warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/trait-object-trait-parens.rs:12:16
   |
LL |     let _: Box<(?Sized) + (for<'a> Trait<'a>) + (Obj)>;
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (?Sized) + (for<'a> Trait<'a>) + (Obj)`

warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/trait-object-trait-parens.rs:16:16
   |
LL |     let _: Box<(for<'a> Trait<'a>) + (Obj) + (?Sized)>;
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (for<'a> Trait<'a>) + (Obj) + (?Sized)`

error[E0225]: only auto traits can be used as additional traits in a trait object
  --> $DIR/trait-object-trait-parens.rs:8:35
   |
LL |     let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
   |                -----              ^^^^^^^^^^^^^^^^^^^ additional non-auto trait
   |                |
   |                first non-auto trait
   |
   = help: consider creating a new trait with all of these as super-traits and using that trait here instead: `trait NewTrait: Obj + for<'a> Trait<'a> {}`
   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>

error[E0225]: only auto traits can be used as additional traits in a trait object
  --> $DIR/trait-object-trait-parens.rs:12:49
   |
LL |     let _: Box<(?Sized) + (for<'a> Trait<'a>) + (Obj)>;
   |                           -------------------   ^^^^^ additional non-auto trait
   |                           |
   |                           first non-auto trait
   |
   = help: consider creating a new trait with all of these as super-traits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}`
   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>

error[E0225]: only auto traits can be used as additional traits in a trait object
  --> $DIR/trait-object-trait-parens.rs:16:38
   |
LL |     let _: Box<(for<'a> Trait<'a>) + (Obj) + (?Sized)>;
   |                 -----------------    ^^^^^ additional non-auto trait
   |                 |
   |                 first non-auto trait
   |
   = help: consider creating a new trait with all of these as super-traits and using that trait here instead: `trait NewTrait: for<'a> Trait<'a> + Obj {}`
   = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>

error: aborting due to 6 previous errors; 3 warnings emitted

For more information about this error, try `rustc --explain E0225`.