remove reliance on old trait solver bug #1
Merged
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Hi there 馃憢 we discovered this project during a crater run with the next-generation trait solver in rust-lang/rust#133502.
The generic parameter
Q
ofQueryHandler
is underconstrained here as it could be any typeT
with<T as Query>::Refs<'a>
being equal to<Q as Query>::Refs<'a>
. It isn't actually necessary forT
to beQ
itself, e.g. it could also be a type which delegates toQ
sQuery
impl. The current type system implementation unnecessarily constrainedT
to be equal toQ
. This will no longer be the case with the new trait solver.See rust-lang/trait-system-refactor-initiative#168 or the related breakage in
bevy
for more details .I am sorry for the inconvenience and am available in case there are any questions.