warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/issue-28344.rs:4:17
   |
LL |     let x: u8 = BitXor::bitor(0 as u8, 0 as u8);
   |                 ^^^^^^ help: use `dyn`: `<dyn BitXor>`
   |
   = note: `#[warn(bare_trait_objects)]` on by default
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>

error[E0191]: the value of the associated type `Output` (from trait `BitXor`) must be specified
  --> $DIR/issue-28344.rs:4:17
   |
LL |     let x: u8 = BitXor::bitor(0 as u8, 0 as u8);
   |                 ^^^^^^ help: specify the associated type: `BitXor<Output = Type>`

error[E0599]: no function or associated item named `bitor` found for trait object `dyn BitXor<_>` in the current scope
  --> $DIR/issue-28344.rs:4:25
   |
LL |     let x: u8 = BitXor::bitor(0 as u8, 0 as u8);
   |                         ^^^^^
   |                         |
   |                         function or associated item not found in `dyn BitXor<_>`
   |                         help: there is an associated function with a similar name: `bitxor`

warning: trait objects without an explicit `dyn` are deprecated
  --> $DIR/issue-28344.rs:10:13
   |
LL |     let g = BitXor::bitor;
   |             ^^^^^^ help: use `dyn`: `<dyn BitXor>`
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>

error[E0191]: the value of the associated type `Output` (from trait `BitXor`) must be specified
  --> $DIR/issue-28344.rs:10:13
   |
LL |     let g = BitXor::bitor;
   |             ^^^^^^ help: specify the associated type: `BitXor<Output = Type>`

error[E0599]: no function or associated item named `bitor` found for trait object `dyn BitXor<_>` in the current scope
  --> $DIR/issue-28344.rs:10:21
   |
LL |     let g = BitXor::bitor;
   |                     ^^^^^
   |                     |
   |                     function or associated item not found in `dyn BitXor<_>`
   |                     help: there is an associated function with a similar name: `bitxor`

error: aborting due to 4 previous errors; 2 warnings emitted

Some errors have detailed explanations: E0191, E0599.
For more information about an error, try `rustc --explain E0191`.