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
|
error[E0277]: expected a `FnOnce()` closure, found `()`
--> $DIR/issue-63279.rs:6:11
|
LL | fn c() -> Closure {
| ^^^^^^^ expected an `FnOnce()` closure, found `()`
|
= help: the trait `FnOnce()` is not implemented for `()`
= note: wrap the `()` in a closure with no arguments: `|| { /* code */ }`
error[E0277]: expected a `FnOnce()` closure, found `()`
--> $DIR/issue-63279.rs:8:11
|
LL | || -> Closure { || () }
| ^^^^^^^ expected an `FnOnce()` closure, found `()`
|
= help: the trait `FnOnce()` is not implemented for `()`
= note: wrap the `()` in a closure with no arguments: `|| { /* code */ }`
error[E0308]: mismatched types
--> $DIR/issue-63279.rs:8:21
|
LL | || -> Closure { || () }
| ^^^^^ expected `()`, found closure
|
= note: expected unit type `()`
found closure `{closure@$DIR/issue-63279.rs:8:21: 8:23}`
help: use parentheses to call this closure
|
LL | || -> Closure { (|| ())() }
| + +++
error[E0308]: mismatched types
--> $DIR/issue-63279.rs:8:5
|
LL | || -> Closure { || () }
| ^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found closure
|
= note: expected unit type `()`
found closure `{closure@$DIR/issue-63279.rs:8:5: 8:18}`
help: use parentheses to call this closure
|
LL | (|| -> Closure { || () })()
| + +++
error: aborting due to 4 previous errors
Some errors have detailed explanations: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.
|
