Lints

Note: Cargo's linting system is unstable and can only be used on nightly toolchains

Warn-by-default

These lints are all set to the ‘warn’ level by default.

unknown_lints

Set to warn by default

What it does

Checks for unknown lints in the [lints.cargo] table

Why it is bad

  • The lint name could be misspelled, leading to confusion as to why it is not working as expected
  • The unknown lint could end up causing an error if cargo decides to make a lint with the same name in the future

Example

[lints.cargo]
this-lint-does-not-exist = "warn"