ekko 0.7.0

Ekko is a simple and light utility for sending echo requests, built upon raw sockets.
Documentation
Build #398696 2021-06-10T21:39:23.297715+00:00
# rustc version
rustc 1.54.0-nightly (eab201df7 2021-06-09)
# docs.rs version
docsrs 0.6.0 (c2d325f 2021-05-02)

# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/ekko-0.7.0/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/ekko-0.7.0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/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" "--emit=invocation-specific" "--resource-suffix" "-20210609-1.54.0-nightly-eab201df7" "--static-root-path" "/" "--cap-lints" "warn" "--disable-per-crate-search", kill_on_drop: false }`
[INFO] [stdout] c0545e307c2d69c99600fb55f8706a2e288adce6febfc01664a64468882ddcb5
[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" "c0545e307c2d69c99600fb55f8706a2e288adce6febfc01664a64468882ddcb5", kill_on_drop: false }`
[INFO] [stderr]  Documenting ekko v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "c0545e307c2d69c99600fb55f8706a2e288adce6febfc01664a64468882ddcb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0545e307c2d69c99600fb55f8706a2e288adce6febfc01664a64468882ddcb5", kill_on_drop: false }`
[INFO] [stdout] c0545e307c2d69c99600fb55f8706a2e288adce6febfc01664a64468882ddcb5