1 warning: unused extern crate
2 --> $DIR/no-macro-use-attr.rs:16:1
4 LL | extern crate derive_a;
5 | ^^^^^^^^^^^^^^^^^^^^^^ help: remove it
7 note: lint level defined here
8 --> $DIR/no-macro-use-attr.rs:14:9
10 LL | #![warn(unused_extern_crates)]
11 | ^^^^^^^^^^^^^^^^^^^^
13 error: compilation successful
14 --> $DIR/no-macro-use-attr.rs:20:1
16 LL | fn main() {} //~ ERROR compilation successful
19 error: aborting due to previous error