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error[E0277]: can't compare `S` with `S` in const contexts
  --> $DIR/call-generic-method-nonconst.rs:18:34
   |
LL | pub const EQ: bool = equals_self(&S);
   |                      ----------- ^^ no implementation for `S == S`
   |                      |
   |                      required by a bound introduced by this call
   |
   = help: the trait `~const PartialEq` is not implemented for `S`
note: the trait `PartialEq` is implemented for `S`, but that implementation is not `const`
  --> $DIR/call-generic-method-nonconst.rs:18:34
   |
LL | pub const EQ: bool = equals_self(&S);
   |                                  ^^
note: required by a bound in `equals_self`
  --> $DIR/call-generic-method-nonconst.rs:11:25
   |
LL | const fn equals_self<T: ~const PartialEq>(t: &T) -> bool {
   |                         ^^^^^^^^^^^^^^^^ required by this bound in `equals_self`
help: consider annotating `S` with `#[derive(PartialEq)]`
   |
LL | #[derive(PartialEq)]
   |

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.