This file contains any lints from rustc that have not been added, and why. box-pointers - This project uses Box pointers, and it is safe to do so unstable-features - This is deprecated, and this project doesn't depend on it Unstable lints: fuzzy-provenance-casts lossy-provenance-casts multiple-supertrait-upcastable must-not-suspend Included in lint group: unused: unused_macro_rules, unused_extern_crates future-incompatible: pointer_structural_match let-underscore: let_underscore_drop rust_2018_compatibility: keyword_idents absolute_paths_not_starting_with_crate rust_2018_idioms: unused_extern_crates elided_lifetimes_in_paths explicit_outlives_requirements rust_2021_compatibility: rust_2021_incompatible_closure_captures, rust_2021_incompatible_or_patterns, rust_2021_prefixes_incompatible_syntax, rust_2021_prelude_collisions,