error[E0425]: cannot find value `a` in this scope --> $DIR/expr_before_ident_pat.rs:10:12 | LL | funny!(a, a); | ^ not found in this scope error: arbitrary expressions aren't allowed in patterns --> $DIR/expr_before_ident_pat.rs:10:12 | LL | funny!(a, a); | ^ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0425`.