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
|
{"message":"mismatched types","code":{"code":"E0308","explanation":"Expected type did not match the received type.
Erroneous code examples:
```compile_fail,E0308
fn plus_one(x: i32) -> i32 {
x + 1
}
plus_one(\"Not a number\");
// ^^^^^^^^^^^^^^ expected `i32`, found `&str`
if \"Not a bool\" {
// ^^^^^^^^^^^^ expected `bool`, found `&str`
}
let x: f32 = \"Not a float\";
// --- ^^^^^^^^^^^^^ expected `f32`, found `&str`
// |
// expected due to this
```
This error occurs when an expression was used in a place where the compiler
expected an expression of a different type. It can occur in several cases, the
most common being when calling a function and passing an argument which has a
different type than the matching type in the function declaration.
"},"level":"error","spans":[{"file_name":"$DIR/flag-json.rs","byte_start":243,"byte_end":245,"line_start":7,"line_end":7,"column_start":17,"column_end":19,"is_primary":true,"text":[{"text":" let _: () = 42;","highlight_start":17,"highlight_end":19}],"label":"expected `()`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/flag-json.rs","byte_start":238,"byte_end":240,"line_start":7,"line_end":7,"column_start":12,"column_end":14,"is_primary":false,"text":[{"text":" let _: () = 42;","highlight_start":12,"highlight_end":14}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[],"rendered":"error[E0308]: mismatched types
--> $DIR/flag-json.rs:7:17
|
LL | ..._: () = 42;
| -- ^^ expected `()`, found integer
| |
| expected due to this
"}
{"message":"aborting due to previous error","code":null,"level":"error","spans":[],"children":[],"rendered":"error: aborting due to previous error
"}
{"message":"For more information about this error, try `rustc --explain E0308`.","code":null,"level":"failure-note","spans":[],"children":[],"rendered":"For more information about this error, try `rustc --explain E0308`.
"}
|