running 1 test test $DIR/failed-doctest-missing-codes.rs - Foo (line 9) - compile fail ... FAILED failures: ---- $DIR/failed-doctest-missing-codes.rs - Foo (line 9) stdout ---- error[E0308]: mismatched types --> $DIR/failed-doctest-missing-codes.rs:10:13 | LL | let x: () = 5i32; | -- ^^^^ expected `()`, found `i32` | | | expected due to this error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0308`. Some expected error codes were not found: ["E0004"] failures: $DIR/failed-doctest-missing-codes.rs - Foo (line 9) test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in $TIME