1 error[E0435]: attempt to use a non-constant value in a constant
2 --> $DIR/type-dependent-def-issue-49241.rs:3:22
4 LL | const l: usize = v.count();
5 | - ^ non-constant value
7 | help: consider using `let` instead of `const`
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0435`.