err-derive 0.3.0

# rustc version
rustc 1.49.0-nightly (ffa2e7ae8 2020-10-24)# docs.rs version
docsrs 0.6.0 (27dcd99 2020-10-28)# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/err-derive-0.3.0/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/err-derive-0.3.0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-j2" "--" "-Z" "unstable-options" "--extern-html-root-url" "rustversion=https://docs.rs/rustversion/1.0.4" "--extern-html-root-url" "proc_macro2=https://docs.rs/proc-macro2/1.0.24" "--extern-html-root-url" "syn=https://docs.rs/syn/1.0.48" "--extern-html-root-url" "synstructure=https://docs.rs/synstructure/0.12.4" "--extern-html-root-url" "proc_macro_error=https://docs.rs/proc-macro-error/1.0.4" "--extern-html-root-url" "quote=https://docs.rs/quote/1.0.7" "--resource-suffix" "-20201024-1.49.0-nightly-ffa2e7ae8" "--static-root-path" "/" "--cap-lints" "warn" "--disable-per-crate-search", kill_on_drop: false }`
[INFO] [stdout] cc2e394d19f57a7897160aed3e2ed7c3f17866a95ab523aedd5d4626b0bf1b01
[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" "cc2e394d19f57a7897160aed3e2ed7c3f17866a95ab523aedd5d4626b0bf1b01", kill_on_drop: false }`
[INFO] [stderr] /opt/crates-build-env/entrypoint.sh: line 7: /etc/hosts: Permission denied
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]    Compiling err-derive v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking synstructure v0.12.4
[INFO] [stderr]  Documenting err-derive v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.85s
[INFO] running `Command { std: "docker" "inspect" "cc2e394d19f57a7897160aed3e2ed7c3f17866a95ab523aedd5d4626b0bf1b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc2e394d19f57a7897160aed3e2ed7c3f17866a95ab523aedd5d4626b0bf1b01", kill_on_drop: false }`
[INFO] [stdout] cc2e394d19f57a7897160aed3e2ed7c3f17866a95ab523aedd5d4626b0bf1b01