natsio 0.4.1

# rustc version
rustc 1.46.0-nightly (449e8eaa2 2020-06-10)
# docs.rs version
docsrs 0.6.0 (b58f2da 2020-06-09)

# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/natsio-0.4.1/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/natsio-0.4.1/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" "MAP_USER_ID=1001" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=-Z unstable-options --resource-suffix -20200610-1.46.0-nightly-449e8eaa2 --static-root-path / --cap-lints warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "3221225472" "--cpus" "2" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--lib" "--no-deps" "-j2", kill_on_drop: false }`
[INFO] [stdout] 7a2434ef3cfc6a062910347a60698e79c8739cb4e9081db245fa7b666655352d
[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" "7a2434ef3cfc6a062910347a60698e79c8739cb4e9081db245fa7b666655352d", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]  Documenting natsio v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "7a2434ef3cfc6a062910347a60698e79c8739cb4e9081db245fa7b666655352d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a2434ef3cfc6a062910347a60698e79c8739cb4e9081db245fa7b666655352d", kill_on_drop: false }`
[INFO] [stdout] 7a2434ef3cfc6a062910347a60698e79c8739cb4e9081db245fa7b666655352d