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+error[E0004]: non-exhaustive patterns: `(true, false)` not covered
+ --> $DIR/issue-4321.rs:3:31
+ |
+LL | println!("foo {:}", match tup {
+ | ^^^ pattern `(true, false)` not covered
+ |
+ = note: the matched value is of type `(bool, bool)`
+help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
+ |
+LL ~ (true, true) => "baz",
+LL + (true, false) => todo!()
+ |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.