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Description
Code
use std::fmt;
struct Hello;
impl fmt::Display for Hello {
fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
write!(f, "hello")
}
}Current output
Compiling playground v0.0.1 (/playground)
error: expected parameter name, found `:`
--> src/lib.rs:6:26
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^ expected parameter name
error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `:`
--> src/lib.rs:6:26
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^
| |
| expected one of `!`, `(`, `)`, `,`, `::`, or `<`
| help: missing `,`
error[E0573]: expected type, found module `fmt`
--> src/lib.rs:6:23
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^^^ not a type
error[E0050]: method `fmt` has 3 parameters but the declaration in trait `std::fmt::Display::fmt` has 2
--> src/lib.rs:6:12
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 parameters, found 3
|
= note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> Result<(), std::fmt::Error>`
Some errors have detailed explanations: E0050, E0573.
For more information about an error, try `rustc --explain E0050`.
error: could not compile `playground` (lib) due to 4 previous errorsDesired output
Compiling playground v0.0.1 (/playground)
error: expected parameter name, found `:`
--> src/lib.rs:6:26
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^ expected parameter name
error: expected one of `!`, `(`, `)`, `,`, `::`, or `<`, found `:`
--> src/lib.rs:6:26
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^
| |
| expected one of `!`, `(`, `)`, `,`, `::`, or `<`
| help: missing `,`
error[E0573]: expected type, found module `fmt`
--> src/lib.rs:6:23
|
6 | fn fmt(&self, f: &fmt:Formatter) -> fmt::Result {
| ^^^ not a type
Some errors have detailed explanations: E0050, E0573.
For more information about an error, try `rustc --explain E0050`.
error: could not compile `playground` (lib) due to 4 previous errorsRationale and extra context
When looking at rust-analyzer output or when just looking at the last few error messages, it's easy to see only the "too many arguments" error, and not the syntax error that points at the exact problem.
Other cases
No response
Rust Version
1.80.1Anything else?
No response
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Area: Messages for errors, warnings, and lintsArea: The parsing of Rust source code to an ASTDiagnostics: Confusing error or lint that should be reworked.Diagnostics: An error or lint that needs small tweaks.Diagnostics: Too much output caused by a single piece of incorrect code.Relevant to the compiler team, which will review and decide on the PR/issue.