TOOL // RUSTC DIAGNOSTICS
Rust Formatting Error Explainer
Paste a Rust formatting or output compiler diagnostic and get a deterministic explanation, safe fix pattern, and the exact RustPrint guide behind it.
01 // INPUT
Processed locally in your browserPaste the compiler diagnostic
Try a known diagnostic
02 // MATCH
What Rust is telling you
rustc → ?Paste a formatting or output diagnostic. RustPrint matches only deterministic rules backed by documented Rust behavior and checked examples.
Explainer scope
V1 recognizes verified formatting and output diagnostics for Display, Debug, runtime format templates, malformed format strings, unused formatting arguments, and stdout flush trait imports.
It does not diagnose arbitrary Rust compiler errors, infer your program's intent, or execute pasted code.