src/test/ui/feature-gates/feature-gate-unboxed-closures.stderr

   1 error[E0658]: rust-call ABI is subject to change
   2   --> $DIR/feature-gate-unboxed-closures.rs:10:12
   3    |
   4 LL |     extern "rust-call" fn call_once(self, (a, b): (u32, u32)) -> u32 {
   5    |            ^^^^^^^^^^^
   6    |
   7    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
   8    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
   9
  10 error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
  11   --> $DIR/feature-gate-unboxed-closures.rs:5:6
  12    |
  13 LL | impl FnOnce<(u32, u32)> for Test {
  14    |      ^^^^^^^^^^^^^^^^^^ help: use parenthetical notation instead: `FnOnce(u32, u32) -> ()`
  15    |
  16    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
  17    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
  18
  19 error[E0183]: manual implementations of `FnOnce` are experimental
  20   --> $DIR/feature-gate-unboxed-closures.rs:5:1
  21    |
  22 LL | impl FnOnce<(u32, u32)> for Test {
  23    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ manual implementations of `FnOnce` are experimental
  24    |
  25    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
  26
  27 error: aborting due to 3 previous errors
  28
  29 For more information about this error, try `rustc --explain E0658`.