error[E0412]: cannot find type `Fo` in this scope --> $DIR/issue-7607-1.rs:5:6 | LL | impl Fo { | ^^ help: a trait with a similar name exists: `Fn` --> $SRC_DIR/core/src/ops/function.rs:LL:COL | = note: similarly named trait `Fn` defined here error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0412`.