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error[E0053]: method `fmt` has an incompatible type for trait
--> $DIR/trait_type.rs:7:21
|
LL | fn fmt(&self, x: &str) -> () { }
| ^^^^ types differ in mutability
|
= note: expected signature `fn(&MyType, &mut Formatter<'_>) -> Result<(), std::fmt::Error>`
found signature `fn(&MyType, &str) -> ()`
help: change the parameter type to match the trait
|
LL | fn fmt(&self, x: &mut Formatter<'_>) -> () { }
| ~~~~~~~~~~~~~~~~~~
error[E0050]: method `fmt` has 1 parameter but the declaration in trait `std::fmt::Display::fmt` has 2
--> $DIR/trait_type.rs:12:11
|
LL | fn fmt(&self) -> () { }
| ^^^^^ expected 2 parameters, found 1
|
= note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> Result<(), std::fmt::Error>`
error[E0186]: method `fmt` has a `&self` declaration in the trait, but not in the impl
--> $DIR/trait_type.rs:17:4
|
LL | fn fmt() -> () { }
| ^^^^^^^^^^^^^^ expected `&self` in impl
|
= note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> Result<(), std::fmt::Error>`
error[E0046]: not all trait items implemented, missing: `fmt`
--> $DIR/trait_type.rs:21:1
|
LL | impl std::fmt::Display for MyType4 {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `fmt` in implementation
|
= help: implement the missing item: `fn fmt(&self, _: &mut Formatter<'_>) -> Result<(), std::fmt::Error> { todo!() }`
error: aborting due to 4 previous errors
Some errors have detailed explanations: E0046, E0050, E0053, E0186.
For more information about an error, try `rustc --explain E0046`.
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