1 error[E0425]: cannot find value `a` in this scope
2 --> $DIR/expr_before_ident_pat.rs:12:12
5 | ^ not found in this scope
7 error: arbitrary expressions aren't allowed in patterns
8 --> $DIR/expr_before_ident_pat.rs:12:12
13 error: aborting due to 2 previous errors
15 For more information about this error, try `rustc --explain E0425`.