Duplicate key

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

Example:

  [foo]
  bar = 1 # Property redefinition is not allowed
  bar = 2 # Property redefinition is not allowed

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

TomlDuplicatedKey

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Rust | Cargo.toml

Inspection ID: TomlDuplicatedKey

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection TomlDuplicatedKey

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Inspection Details
By default bundled with:
Can be installed with plugin:	Rust, 252.26665.0

Last modified: 18 September 2025