event-listener 2.1.0

# rustc version
rustc 1.46.0-nightly (f781babf8 2020-07-01)# docs.rs version
docsrs 0.6.0 (2a297ce 2020-07-01)# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/event-listener-2.1.0/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/event-listener-2.1.0/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" "MAP_USER_ID=1001" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=-Z unstable-options --resource-suffix -20200701-1.46.0-nightly-f781babf8 --static-root-path / --cap-lints warn --extern-html-root-url futures=https://docs.rs/futures/0.3.5 --extern-html-root-url waker_fn=https://docs.rs/waker-fn/1.0.0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--lib" "--no-deps" "-j2", kill_on_drop: false }`
[INFO] [stdout] dd60f8261700468e02ae4c9333dc44c4adee6265aaacbda85462c6c035c11fed
[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" "dd60f8261700468e02ae4c9333dc44c4adee6265aaacbda85462c6c035c11fed", kill_on_drop: false }`
[INFO] [stderr]  Documenting event-listener v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "dd60f8261700468e02ae4c9333dc44c4adee6265aaacbda85462c6c035c11fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd60f8261700468e02ae4c9333dc44c4adee6265aaacbda85462c6c035c11fed", kill_on_drop: false }`
[INFO] [stdout] dd60f8261700468e02ae4c9333dc44c4adee6265aaacbda85462c6c035c11fed