Recent Rust versions (1.26.1) report the following warnings on master: ``` warning: constant item is never used: `N_DIGEST_ALGORITHMS` --> external/crypto_digest.rs:74:1 | 74 | const N_DIGEST_ALGORITHMS: usize = DIGEST_SHA3_512 as usize + 1; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: #[warn(dead_code)] on by default warning: type alias is never used: `smartlist_t` --> external/crypto_digest.rs:120:1 | 120 | type smartlist_t = Stringlist; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```