While playing with some code on a recent urlo question, I dicovered this compiler message which references an open issue from 2014. Do you think "equality constraints in where clauses" are something that's still coming or should it be removed from the error message?
error: equality constraints are not yet supported in `where` clauses
--> src/lib.rs:13:5
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13 | <T as Add>::Output = T
| ^^^^^^^^^^^^^^^^^^^^^^ not supported
|
= note: see issue #20041 <https://github.com/rust-lang/rust/issues/20041> for more information
help: if `Output` is an associated type you're trying to set, use the associated type binding syntax
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13 | T: Add<Output = T>
|