[WIP] Add support for custom allocator for `String` #131255

Annotations

10 errors

`you seem to be trying to use `Box<String>`. Consider using just `String`` not found in diagnostics on line 29

``format!(..)` appended to existing `String`` not found in diagnostics on line 7

`argument has type `std::string::String`` not found in diagnostics on line 29

`redundant type annotation` not found in diagnostics on line 159

`redundant type annotation` not found in diagnostics on line 171

`redundant type annotation` not found in diagnostics on line 183

`useless conversion to the same type: `std::string::String`` not found in diagnostics on line 34

`useless conversion to the same type: `std::string::String`` not found in diagnostics on line 36

`useless conversion to the same type: `std::string::String`` not found in diagnostics on line 38

`useless conversion to the same type: `std::string::String`` not found in diagnostics on line 40