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Rollup of 4 pull requests - #42989
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Try to make clear that this isn't an API guarantee for now, as we likely want to refine these errors in the future, e.g. `ENOSPC` "No space left on device". CC rust-lang#40322
…nonymous lifetime parameter
Adding diagnostic code 0611 for lifetime errors with one named, one anonymous lifetime parameter This is a fix for rust-lang#42517 Note that this only handles the above case for **function declarations** and **traits**. `impl items` and `closures` will be handled in a later PR. Example ``` fn foo<'a>(x: &i32, y: &'a i32) -> &'a i32 { if x > y { x } else { y } } ``` now displays the following error message. ui tests have been added for the same. ``` error[E0611]: explicit lifetime required in the type of `x` 11 | fn foo<'a>(x: &i32, y: &'a i32) -> &'a i32 { | ^ consider changing the type of `x` to `&'a i32` 12 | if x > y { x } else { y } | - lifetime `'a` required ``` rust-lang#42516 r? @nikomatsakis
Add pager support for `rustc --explain EXXXX` Hello! This is my take on rust-lang#32665. Thanks! **EDIT:** _I've limited access to a Windows machine so this is taking longer than I've anticipated_. 🐢 cc @alexcrichton@nikomatsakis@Mark-Simulacrum@retep998@ollie27@afiune
…r=GuillaumeGomez Document possible `io::ErrorKind`s of `fs::open` Try to make clear that this isn't an API guarantee for now, as we likely want to refine these errors in the future, e.g. `ENOSPC` "No space left on device". CC rust-lang#40322
…sakis Add E0619 error explanation r? @eddyb
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rustc --explain EXXXX#42732, Document possibleio::ErrorKinds offs::open#42925, Add E0619 error explanation #42957