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879f62bb3c
* The phrasing "only does something for" made sense back when this diagnostic was a (hard) warning. Now however, it's simply a hard error and thus completely rules out "doing something". * The primary message was way too long * The new wording more closely mirrors the wording we use for applying other bound modifiers (like `const` and `async`) to incompatible traits. * "all other traits are not bound by default" is no longer accurate under Sized Hierarchy. E.g., traits and assoc tys are (currently) bounded by `MetaSized` by default but can't be relaxed using `?MetaSized` (instead, you relax it by adding `PointeeSized`). * I've decided against adding any diagnositic notes or suggestions for now like "trait `Trait` can't be relaxed as it's not bound by default" which would be incorrect for `MetaSized` and assoc tys as mentioned above) or "consider changing `?MetaSized` to `PointeeSized`" as the Sized Hierarchy impl is still WIP)
17 lines
550 B
Plaintext
17 lines
550 B
Plaintext
error: bound modifier `?` can only be applied to `Sized`
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--> $DIR/opt-out-bound-not-satisfied.rs:5:18
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LL | fn foo() -> impl ?Future<Output = impl Send> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: bound modifier `?` can only be applied to `Sized`
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--> $DIR/opt-out-bound-not-satisfied.rs:5:18
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LL | fn foo() -> impl ?Future<Output = impl Send> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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error: aborting due to 2 previous errors
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