error[E0425]: cannot find function `cmp` in this scope --> $DIR/fn-to-method.rs:12:13 | LL | let x = cmp(&1, &2); | ^^^ not found in this scope | help: consider importing one of these associated functions | LL + use std::cmp::Ord::cmp; | LL + use std::iter::Iterator::cmp; | error[E0425]: cannot find function `len` in this scope --> $DIR/fn-to-method.rs:16:13 | LL | let y = len([1, 2, 3]); | ^^^ not found in this scope | help: consider importing this associated function | LL + use std::iter::ExactSizeIterator::len; | error[E0425]: cannot find function `bar` in this scope --> $DIR/fn-to-method.rs:20:13 | LL | let z = bar(Foo); | ^^^ not found in this scope | help: use the `.` operator to call the method `bar` on `Foo` | LL - let z = bar(Foo); LL + let z = Foo.bar(); | error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0425`.