1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
error: implementation of `FnOnce` is not general enough
--> $DIR/closure-mismatch.rs:8:5
|
LL | baz(|_| ());
| ^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: closure with signature `fn(&'2 ())` must implement `FnOnce<(&'1 (),)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 (),)>`, for some specific lifetime `'2`
error[E0308]: mismatched types
--> $DIR/closure-mismatch.rs:8:5
|
LL | baz(|_| ());
| ^^^^^^^^^^^ one type is more general than the other
|
= note: expected trait `for<'a> Fn<(&'a (),)>`
found trait `Fn<(&(),)>`
note: this closure does not fulfill the lifetime requirements
--> $DIR/closure-mismatch.rs:8:9
|
LL | baz(|_| ());
| ^^^
note: the lifetime requirement is introduced here
--> $DIR/closure-mismatch.rs:5:11
|
LL | fn baz<T: Foo>(_: T) {}
| ^^^
help: consider specifying the type of the closure parameters
|
LL | baz(|_: &_| ());
| ~~~~~~~
error: implementation of `FnOnce` is not general enough
--> $DIR/closure-mismatch.rs:11:5
|
LL | baz(|x| ());
| ^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: closure with signature `fn(&'2 ())` must implement `FnOnce<(&'1 (),)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 (),)>`, for some specific lifetime `'2`
error[E0308]: mismatched types
--> $DIR/closure-mismatch.rs:11:5
|
LL | baz(|x| ());
| ^^^^^^^^^^^ one type is more general than the other
|
= note: expected trait `for<'a> Fn<(&'a (),)>`
found trait `Fn<(&(),)>`
note: this closure does not fulfill the lifetime requirements
--> $DIR/closure-mismatch.rs:11:9
|
LL | baz(|x| ());
| ^^^
note: the lifetime requirement is introduced here
--> $DIR/closure-mismatch.rs:5:11
|
LL | fn baz<T: Foo>(_: T) {}
| ^^^
help: consider specifying the type of the closure parameters
|
LL | baz(|x: &_| ());
| ~~~~~~~
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0308`.
|
