error[E0658]: unless otherwise specified, attributes with the prefix `rustc_` are reserved for internal compiler diagnostics (see issue #29642)
  --> $DIR/attribute-typos.rs:11:3
   |
LL | #[rustc_err]    //~ ERROR E0658
   |   ^^^^^^^^^
   |
   = help: add #![feature(rustc_attrs)] to the crate attributes to enable

error[E0658]: The attribute `tests` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
  --> $DIR/attribute-typos.rs:6:3
   |
LL | #[tests]        //~ ERROR E0658
   |   ^^^^^ help: a built-in attribute with a similar name exists: `test`
   |
   = help: add #![feature(custom_attribute)] to the crate attributes to enable

error[E0658]: The attribute `deprcated` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
  --> $DIR/attribute-typos.rs:1:3
   |
LL | #[deprcated]    //~ ERROR E0658
   |   ^^^^^^^^^ help: a built-in attribute with a similar name exists: `deprecated`
   |
   = help: add #![feature(custom_attribute)] to the crate attributes to enable

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0658`.