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error[E0178]: expected a path on the left-hand side of `+`, not `&'a Foo`
--> $DIR/E0178.rs:6:8
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LL | w: &'a Foo + Copy,
| ^^^^^^^^^^^^^^ help: try adding parentheses: `&'a (Foo + Copy)`
error[E0178]: expected a path on the left-hand side of `+`, not `&'a Foo`
--> $DIR/E0178.rs:7:8
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LL | x: &'a Foo + 'a,
| ^^^^^^^^^^^^ help: try adding parentheses: `&'a (Foo + 'a)`
error[E0178]: expected a path on the left-hand side of `+`, not `&'a mut Foo`
--> $DIR/E0178.rs:8:8
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LL | y: &'a mut Foo + 'a,
| ^^^^^^^^^^^^^^^^ help: try adding parentheses: `&'a mut (Foo + 'a)`
error[E0178]: expected a path on the left-hand side of `+`, not `fn() -> Foo`
--> $DIR/E0178.rs:9:8
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LL | z: fn() -> Foo + 'a,
| ^^^^^^^^^^^^^^^^ perhaps you forgot parentheses?
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0178`.
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