error: unknown `doc` attribute `as_ptr`
  --> $DIR/doc-attr.rs:6:7
   |
LL | #[doc(as_ptr)]
   |       ^^^^^^
   |
note: the lint level is defined here
  --> $DIR/doc-attr.rs:1:9
   |
LL | #![deny(invalid_doc_attributes)]
   |         ^^^^^^^^^^^^^^^^^^^^^^

error: expected this to be of the form `... = "..."`
  --> $DIR/doc-attr.rs:10:7
   |
LL | #[doc(123)]
   |       ^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

error: expected this to be of the form `... = "..."`
  --> $DIR/doc-attr.rs:13:7
   |
LL | #[doc("hello", "bar")]
   |       ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

error: expected this to be of the form `... = "..."`
  --> $DIR/doc-attr.rs:13:16
   |
LL | #[doc("hello", "bar")]
   |                ^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

error: unknown `doc` attribute `foo::bar`
  --> $DIR/doc-attr.rs:18:7
   |
LL | #[doc(foo::bar, crate::bar::baz = "bye")]
   |       ^^^^^^^^

error: unknown `doc` attribute `crate::bar::baz`
  --> $DIR/doc-attr.rs:18:17
   |
LL | #[doc(foo::bar, crate::bar::baz = "bye")]
   |                 ^^^^^^^^^^^^^^^

error: unknown `doc` attribute `as_ptr`
  --> $DIR/doc-attr.rs:3:8
   |
LL | #![doc(as_ptr)]
   |        ^^^^^^

error: aborting due to 7 previous errors