Cargo.toml

Crate not found  

Reports any unknown crates listed in Cargo.toml.

Cyclic feature dependency  

Detects features that depend on themselves.

Duplicate key  

Reports duplicated keys within the same section of a Cargo.toml file.

Invalid crate version  

Reports invalid crate versions in Cargo.toml.

Newer crate version available  

Reports outdated crate versions in Cargo.toml.

Schema violation  

Reports errors in Cargo.toml related to structure, constraints, and data types.

Unclosed string literal  

Reports string literals that are missing a closing quote.

Unnecessary `package` field  

Reports unnecessary package keys in Cargo.toml dependency declarations.

Unused dependency  

Reports crates that are not used in the project's source code.