Auto merge of #296 - CAD97:relax-set-debug, r=Amanieu

bors · bors · commit 612057bccc3a · 2021-10-02T01:18:53.000Z
Relax the bounds on HashSet: Debug This looks to be just an oversight. The bounds on `HashMap` are similarly loose: https://github.com/rust-lang/hashbrown/blob/1e1bb230bc376f6db99e08c055fd758d142aa72d/src/map.rs#L1540-L1545 And `std::collections::HashSet` has always only bounded `T` by `Debug` and not `Eq`/`Hash` here.
diff --git a/src/set.rs b/src/set.rs
@@ -1128,8 +1128,7 @@ where
 
 impl<T, S, A> fmt::Debug for HashSet<T, S, A>
 where
-    T: Eq + Hash + fmt::Debug,
-    S: BuildHasher,
+    T: fmt::Debug,
     A: Allocator + Clone,
 {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {

Original file line number	Diff line number	Diff line change
`@@ -1128,8 +1128,7 @@ where`
`1128`	`1128`
`1129`	`1129`	`impl<T, S, A> fmt::Debug for HashSet<T, S, A>`
`1130`	`1130`	`where`
`1131`		`- T: Eq + Hash + fmt::Debug,`
`1132`		`- S: BuildHasher,`
	`1131`	`+ T: fmt::Debug,`
`1133`	`1132`	`A: Allocator + Clone,`
`1134`	`1133`	`{`
`1135`	`1134`	`fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {`