error: `$ty:ty` is followed by `<`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:4:13
   |
LL |     ($ty:ty <) => ();
   |             ^ not allowed after `ty` fragments
   |
   = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`

error: `$ty:ty` is followed by `<`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:5:13
   |
LL |     ($ty:ty < foo ,) => ();
   |             ^ not allowed after `ty` fragments
   |
   = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`

error: `$pa:pat` is followed by `>`, which is not allowed for `pat` fragments
  --> $DIR/macro-input-future-proofing.rs:11:14
   |
LL |     ($pa:pat >) => ();
   |              ^ not allowed after `pat` fragments
   |
   = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`

error: `$pa:pat` is followed by `$pb:pat`, which is not allowed for `pat` fragments
  --> $DIR/macro-input-future-proofing.rs:13:14
   |
LL |     ($pa:pat $pb:pat $ty:ty ,) => ();
   |              ^^^^^^^ not allowed after `pat` fragments
   |
   = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`

error: `$pb:pat` is followed by `$ty:ty`, which is not allowed for `pat` fragments
  --> $DIR/macro-input-future-proofing.rs:13:22
   |
LL |     ($pa:pat $pb:pat $ty:ty ,) => ();
   |                      ^^^^^^ not allowed after `pat` fragments
   |
   = note: allowed there are: `=>`, `,`, `=`, `|`, `if` or `in`

error: `$ty:ty` is followed by `-`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:16:17
   |
LL |     ($($ty:ty)* -) => ();
   |                 ^ not allowed after `ty` fragments
   |
   = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`

error: `$b:ty` is followed by `-`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:17:23
   |
LL |     ($($a:ty, $b:ty)* -) => ();
   |                       ^ not allowed after `ty` fragments
   |
   = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`

error: `$ty:ty` is followed by `-`, which is not allowed for `ty` fragments
  --> $DIR/macro-input-future-proofing.rs:18:15
   |
LL |     ($($ty:ty)-+) => ();
   |               ^ not allowed after `ty` fragments
   |
   = note: allowed there are: `{`, `[`, `=>`, `,`, `>`, `=`, `:`, `;`, `|`, `as` or `where`

error: `$a:expr` is followed by `$b:tt`, which is not allowed for `expr` fragments
  --> $DIR/macro-input-future-proofing.rs:19:21
   |
LL |     ( $($a:expr)* $($b:tt)* ) => { };
   |                     ^^^^^ not allowed after `expr` fragments
   |
   = note: allowed there are: `=>`, `,` or `;`

error: aborting due to 9 previous errors