async-mutex 1.4.0

# rustc version
rustc 1.48.0-nightly (fb1dc34a8 2020-09-21)# docs.rs version
docsrs 0.6.0 (1fa0b9d 2020-09-20)# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/async-mutex-1.4.0/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/async-mutex-1.4.0/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" "RUSTDOCFLAGS=-Z unstable-options --static-root-path / --cap-lints warn --disable-per-crate-search --extern-html-root-url event_listener=https://docs.rs/event-listener/2.5.1 --extern-html-root-url futures_lite=https://docs.rs/futures-lite/1.8.0 --extern-html-root-url futures=https://docs.rs/futures/0.3.5 --extern-html-root-url smol=https://docs.rs/smol/0.1.18 --extern-html-root-url async_std=https://docs.rs/async-std/1.6.4 --extern-html-root-url tokio=https://docs.rs/tokio/0.2.22 --extern-html-root-url futures_intrusive=https://docs.rs/futures-intrusive/0.3.1 --resource-suffix -20200921-1.48.0-nightly-fb1dc34a8" "-e" "DOCS_RS=1" "-e" "RUSTFLAGS=" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--lib" "--no-deps" "-j2", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bd561af73198891ce0dc8ca50750caf74382072fc5d21ee4495e58aaab44a7db
[INFO] running `Command { std: "docker" "start" "-a" "bd561af73198891ce0dc8ca50750caf74382072fc5d21ee4495e58aaab44a7db", kill_on_drop: false }`
[INFO] [stderr] /opt/crates-build-env/entrypoint.sh: line 7: /etc/hosts: Permission denied
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]  Documenting async-mutex v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "bd561af73198891ce0dc8ca50750caf74382072fc5d21ee4495e58aaab44a7db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd561af73198891ce0dc8ca50750caf74382072fc5d21ee4495e58aaab44a7db", kill_on_drop: false }`
[INFO] [stdout] bd561af73198891ce0dc8ca50750caf74382072fc5d21ee4495e58aaab44a7db