cope 0.0.1

# rustc version
rustc 1.49.0-nightly (cf9cf7c92 2020-11-10)
# docs.rs version
docsrs 0.6.0 (b527df8 2020-11-09)

# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/cope-0.0.1/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/cope-0.0.1/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-j2" "--" "-Z" "unstable-options" "--extern-html-root-url" "scopeguard=https://docs.rs/scopeguard/1.1.0" "--resource-suffix" "-20201110-1.49.0-nightly-cf9cf7c92" "--static-root-path" "/" "--cap-lints" "warn" "--disable-per-crate-search", 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] 33c26a782de934bf9337c6d8996b650b87d66157ec9550a4e181e573f5f700b0
[INFO] running `Command { std: "docker" "start" "-a" "33c26a782de934bf9337c6d8996b650b87d66157ec9550a4e181e573f5f700b0", kill_on_drop: false }`
[INFO] [stderr] /opt/crates-build-env/entrypoint.sh: line 7: /etc/hosts: Permission denied
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]  Documenting cope v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "33c26a782de934bf9337c6d8996b650b87d66157ec9550a4e181e573f5f700b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33c26a782de934bf9337c6d8996b650b87d66157ec9550a4e181e573f5f700b0", kill_on_drop: false }`
[INFO] [stdout] 33c26a782de934bf9337c6d8996b650b87d66157ec9550a4e181e573f5f700b0