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coherence-subtyping.stderr
30 lines (26 loc) · 1.65 KB
/
coherence-subtyping.stderr
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error[E0119]: conflicting implementations of trait `Contravariant` for type `for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8`:
--> $DIR/coherence-subtyping.rs:11:1
|
LL | impl Contravariant for for<'a,'b> fn(&'a u8, &'b u8) -> &'a u8 {
| -------------------------------------------------------------- first implementation here
...
LL | impl Contravariant for for<'a> fn(&'a u8, &'a u8) -> &'a u8 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8`
error[E0119]: conflicting implementations of trait `Covariant` for type `for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8`:
--> $DIR/coherence-subtyping.rs:24:1
|
LL | impl Covariant for for<'a,'b> fn(&'a u8, &'b u8) -> &'a u8 {
| ---------------------------------------------------------- first implementation here
...
LL | impl Covariant for for<'a> fn(&'a u8, &'a u8) -> &'a u8 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8`
error[E0119]: conflicting implementations of trait `Invariant` for type `for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8`:
--> $DIR/coherence-subtyping.rs:37:1
|
LL | impl Invariant for for<'a,'b> fn(&'a u8, &'b u8) -> &'a u8 {
| ---------------------------------------------------------- first implementation here
...
LL | impl Invariant for for<'a> fn(&'a u8, &'a u8) -> &'a u8 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8`
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0119`.