warning: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `cyclomatic-complexity-threshold`. Please use `cognitive-complexity-threshold` instead warning: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `blacklisted-names`. Please use `disallowed-names` instead error: the function has a cognitive complexity of (3/2) --> $DIR/conf_deprecated_key.rs:6:4 | LL | fn cognitive_complexity() { | ^^^^^^^^^^^^^^^^^^^^ | = note: `-D clippy::cognitive-complexity` implied by `-D warnings` = help: you could split it up into multiple smaller functions error: aborting due to previous error; 2 warnings emitted