1 error[E0277]: `MyError` doesn't implement `std::fmt::Display`
2 --> $DIR/issue-71363.rs:4:6
4 4 | impl std::error::Error for MyError {}
5 | ^^^^^^^^^^^^^^^^^ `MyError` cannot be formatted with the default formatter
7 = help: the trait `std::fmt::Display` is not implemented for `MyError`
8 = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
9 note: required by a bound in `std::error::Error`
10 --> $SRC_DIR/core/src/error.rs:LL:COL
12 = note: required by this bound in `std::error::Error`
14 error[E0277]: `MyError` doesn't implement `Debug`
15 --> $DIR/issue-71363.rs:4:6
17 4 | impl std::error::Error for MyError {}
18 | ^^^^^^^^^^^^^^^^^ `MyError` cannot be formatted using `{:?}`
20 = help: the trait `Debug` is not implemented for `MyError`
21 = note: add `#[derive(Debug)]` to `MyError` or manually `impl Debug for MyError`
22 note: required by a bound in `std::error::Error`
23 --> $SRC_DIR/core/src/error.rs:LL:COL
25 = note: required by this bound in `std::error::Error`
26 help: consider annotating `MyError` with `#[derive(Debug)]`
31 error: aborting due to 2 previous errors
33 For more information about this error, try `rustc --explain E0277`.