#![feature(tool_lints)] #![warn(clippy::default_hash_types)] #![feature(rustc_private)] extern crate rustc_data_structures; use std::collections::{HashMap, HashSet}; use rustc_data_structures::fx::{FxHashMap, FxHashSet}; fn main() { let _map: HashMap = HashMap::default(); let _set: HashSet = HashSet::default(); // test that the lint doesn't also match the Fx variants themselves 😂 let _fx_map: FxHashMap = FxHashMap::default(); let _fx_set: FxHashSet = FxHashSet::default(); }