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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
error[E0308]: mismatched types
--> tests/ui/fail/async_instrument.rs:5:5
|
5 | ""
| ^^ expected `()`, found `&str`
|
note: return type inferred to be `()` here
--> tests/ui/fail/async_instrument.rs:4:10
|
4 | async fn unit() {
| ^^^^
error[E0308]: mismatched types
--> tests/ui/fail/async_instrument.rs:10:5
|
10 | ""
| ^^- help: try using a conversion method: `.to_string()`
| |
| expected `String`, found `&str`
|
note: return type inferred to be `String` here
--> tests/ui/fail/async_instrument.rs:9:31
|
9 | async fn simple_mismatch() -> String {
| ^^^^^^
error[E0277]: `(&str,)` doesn't implement `std::fmt::Display`
--> tests/ui/fail/async_instrument.rs:14:57
|
14 | async fn opaque_unsatisfied() -> impl std::fmt::Display {
| _________________________________________________________-
15 | | ("",)
16 | | }
| | ^
| | |
| |_`(&str,)` cannot be formatted with the default formatter
| return type was inferred to be `(&str,)` here
|
= help: the trait `std::fmt::Display` is not implemented for `(&str,)`
= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
error[E0277]: `(&str,)` doesn't implement `std::fmt::Display`
--> tests/ui/fail/async_instrument.rs:14:34
|
14 | async fn opaque_unsatisfied() -> impl std::fmt::Display {
| ^^^^^^^^^^^^^^^^^^^^^^ `(&str,)` cannot be formatted with the default formatter
|
= help: the trait `std::fmt::Display` is not implemented for `(&str,)`
= note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
error[E0308]: mismatched types
--> tests/ui/fail/async_instrument.rs:22:5
|
22 | ""
| ^^ expected `Wrapper<_>`, found `&str`
|
= note: expected struct `Wrapper<_>`
found reference `&'static str`
note: return type inferred to be `Wrapper<_>` here
--> tests/ui/fail/async_instrument.rs:21:36
|
21 | async fn mismatch_with_opaque() -> Wrapper<impl std::fmt::Display> {
| ^^^^^^^
help: try wrapping the expression in `Wrapper`
|
22 | Wrapper("")
| ++++++++ +
error[E0308]: mismatched types
--> tests/ui/fail/async_instrument.rs:28:16
|
28 | return "";
| ^^ expected `()`, found `&str`
|
note: return type inferred to be `()` here
--> tests/ui/fail/async_instrument.rs:26:10
|
26 | async fn early_return_unit() {
| ^^^^^^^^^^^^^^^^^
error[E0308]: mismatched types
--> tests/ui/fail/async_instrument.rs:35:16
|
35 | return "";
| ^^- help: try using a conversion method: `.to_string()`
| |
| expected `String`, found `&str`
|
note: return type inferred to be `String` here
--> tests/ui/fail/async_instrument.rs:33:28
|
33 | async fn early_return() -> String {
| ^^^^^^
error[E0308]: mismatched types
--> tests/ui/fail/async_instrument.rs:40:1
|
40 | #[tracing::instrument]
| ^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `()`
41 | async fn extra_semicolon() -> i32 {
42 | 1;
| - help: remove this semicolon to return this value
|
= note: this error originates in the attribute macro `tracing::instrument` (in Nightly builds, run with -Z macro-backtrace for more info)
|
