subtle 2.4.0

# rustc version
rustc 1.50.0-nightly (b32e6e6ac 2020-12-16)# docs.rs version
docsrs 0.6.0 (31c864e 2020-11-22)# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/subtle-2.4.0/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/subtle-2.4.0/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "3221225472" "--cpus" "2" "--user" "1001:1001" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "-Zunstable-options" "--config=doc.extern-map.registries.crates-io=\"https://docs.rs\"" "-j2" "--" "-Z" "unstable-options" "--resource-suffix" "-20201216-1.50.0-nightly-b32e6e6ac" "--static-root-path" "/" "--cap-lints" "warn" "--disable-per-crate-search", kill_on_drop: false }`
[INFO] [stdout] b0ff5e2c6f76ed498c617eb4b7c8820659666a9b69d8573ddbaa3d6c2b065506
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b0ff5e2c6f76ed498c617eb4b7c8820659666a9b69d8573ddbaa3d6c2b065506", kill_on_drop: false }`
[INFO] [stderr] /opt/crates-build-env/entrypoint.sh: line 7: /etc/hosts: Permission denied
[INFO] [stderr]  Documenting subtle v2.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]    --> src/lib.rs:198:5
[INFO] [stderr]     |
[INFO] [stderr] 198 |     #[inline]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]    --> src/lib.rs:321:5
[INFO] [stderr]     |
[INFO] [stderr] 321 |     #[inline]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `#[inline]` is ignored on function prototypes
[INFO] [stderr]    --> src/lib.rs:471:5
[INFO] [stderr]     |
[INFO] [stderr] 471 |     #[inline]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `Command { std: "docker" "inspect" "b0ff5e2c6f76ed498c617eb4b7c8820659666a9b69d8573ddbaa3d6c2b065506", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0ff5e2c6f76ed498c617eb4b7c8820659666a9b69d8573ddbaa3d6c2b065506", kill_on_drop: false }`
[INFO] [stdout] b0ff5e2c6f76ed498c617eb4b7c8820659666a9b69d8573ddbaa3d6c2b065506