1 error[E0658]: The attribute `foo` is currently unknown to the compiler and may have meaning added to it in the future
2 --> $DIR/custom_attribute.rs:3:3
7 = note: for more information, see https://github.com/rust-lang/rust/issues/29642
8 = help: add #![feature(custom_attribute)] to the crate attributes to enable
10 error[E0658]: The attribute `foo` is currently unknown to the compiler and may have meaning added to it in the future
11 --> $DIR/custom_attribute.rs:5:7
16 = note: for more information, see https://github.com/rust-lang/rust/issues/29642
17 = help: add #![feature(custom_attribute)] to the crate attributes to enable
19 error[E0658]: The attribute `foo` is currently unknown to the compiler and may have meaning added to it in the future
20 --> $DIR/custom_attribute.rs:7:7
25 = note: for more information, see https://github.com/rust-lang/rust/issues/29642
26 = help: add #![feature(custom_attribute)] to the crate attributes to enable
28 error: aborting due to 3 previous errors
30 For more information about this error, try `rustc --explain E0658`.