rmake 0.1.19

A simple task runner like make
Build #331231 2021-01-01T13:13:05.411718+00:00
# rustc version
rustc 1.51.0-nightly (44e3daf5e 2020-12-31)
# docs.rs version
docsrs 0.6.0 (bcc1a2c 2020-12-30)

# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/rmake-0.1.19/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/rmake-0.1.19/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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" "-20201231-1.51.0-nightly-44e3daf5e" "--static-root-path" "/" "--cap-lints" "warn" "--disable-per-crate-search", kill_on_drop: false }`
[INFO] [stdout] 210fa7367730f6524c8243aeff3ebb3c7a83efe725bc7e4e0d24418d65c9da77
[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" "210fa7367730f6524c8243aeff3ebb3c7a83efe725bc7e4e0d24418d65c9da77", kill_on_drop: false }`
[INFO] [stderr] /opt/crates-build-env/entrypoint.sh: line 7: /etc/hosts: Permission denied
[INFO] [stderr] error: no library targets found in package `rmake`
[INFO] running `Command { std: "docker" "inspect" "210fa7367730f6524c8243aeff3ebb3c7a83efe725bc7e4e0d24418d65c9da77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "210fa7367730f6524c8243aeff3ebb3c7a83efe725bc7e4e0d24418d65c9da77", kill_on_drop: false }`
[INFO] [stdout] 210fa7367730f6524c8243aeff3ebb3c7a83efe725bc7e4e0d24418d65c9da77