error[E0774]: `derive` may only be applied to `struct`s, `enum`s and `union`s
  --> $DIR/attributes-on-modules-fail.rs:16:1
   |
LL | #[derive(Copy)]
   | ^^^^^^^^^^^^^^^ not applicable here
LL | mod n {}
   | -------- not a `struct`, `enum` or `union`

error[E0658]: non-inline modules in proc macro input are unstable
  --> $DIR/attributes-on-modules-fail.rs:20:1
   |
LL | mod module;
   | ^^^^^^^^^^^
   |
   = note: see issue #54727 <https://github.com/rust-lang/rust/issues/54727> for more information
   = help: add `#![feature(proc_macro_hygiene)]` to the crate attributes to enable

error[E0658]: non-inline modules in proc macro input are unstable
  --> $DIR/attributes-on-modules-fail.rs:24:5
   |
LL |     mod inner;
   |     ^^^^^^^^^^
   |
   = note: see issue #54727 <https://github.com/rust-lang/rust/issues/54727> for more information
   = help: add `#![feature(proc_macro_hygiene)]` to the crate attributes to enable

error[E0658]: non-inline modules in proc macro input are unstable
  --> $DIR/attributes-on-modules-fail.rs:33:9
   |
LL |         mod inner;
   |         ^^^^^^^^^^
   |
   = note: see issue #54727 <https://github.com/rust-lang/rust/issues/54727> for more information
   = help: add `#![feature(proc_macro_hygiene)]` to the crate attributes to enable

error[E0658]: non-inline modules in proc macro input are unstable
  --> $DIR/attributes-on-modules-fail.rs:42:5
   |
LL |     mod inner;
   |     ^^^^^^^^^^
   |
   = note: see issue #54727 <https://github.com/rust-lang/rust/issues/54727> for more information
   = help: add `#![feature(proc_macro_hygiene)]` to the crate attributes to enable

error[E0412]: cannot find type `Y` in this scope
  --> $DIR/attributes-on-modules-fail.rs:10:14
   |
LL |     type A = Y;
   |              ^ not found in this scope
   |
help: consider importing this struct
   |
LL |     use Y;
   |

error[E0412]: cannot find type `X` in this scope
  --> $DIR/attributes-on-modules-fail.rs:14:10
   |
LL | type A = X;
   |          ^ not found in this scope
   |
help: consider importing this struct
   |
LL | use m::X;
   |

error: aborting due to 7 previous errors

Some errors have detailed explanations: E0412, E0658, E0774.
For more information about an error, try `rustc --explain E0412`.