src/test/ui/in-band-lifetimes/mismatched_trait_impl.stderr

   1 error: `impl` item signature doesn't match `trait` item signature
   2   --> $DIR/mismatched_trait_impl.rs:9:5
   3    |
   4 LL |     fn foo(&self, x: &'a u32, y: &u32) -> &'a u32;
   5    |     ---------------------------------------------- expected `fn(&'1 i32, &'a u32, &'2 u32) -> &'a u32`
   6 ...
   7 LL |     fn foo(&self, x: &u32, y: &'a u32) -> &'a u32 {
   8    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&'1 i32, &'2 u32, &'3 u32) -> &'3 u32`
   9    |
  10    = note: expected `fn(&'1 i32, &'a u32, &'2 u32) -> &'a u32`
  11               found `fn(&'1 i32, &'2 u32, &'3 u32) -> &'3 u32`
  12    = help: the lifetime requirements from the `impl` do not correspond to the requirements in the `trait`
  13    = help: verify the lifetime relationships in the `trait` and `impl` between the `self` argument, the other inputs and its output
  14
  15 error[E0623]: lifetime mismatch
  16   --> $DIR/mismatched_trait_impl.rs:10:9
  17    |
  18 LL |     fn foo(&self, x: &u32, y: &'a u32) -> &'a u32 {
  19    |                      ----                 -------
  20    |                      |
  21    |                      this parameter and the return type are declared with different lifetimes...
  22 LL |         x
  23    |         ^ ...but data from `x` is returned here
  24
  25 error: aborting due to 2 previous errors
  26
  27 For more information about this error, try `rustc --explain E0623`.