err-derive 0.2.4

# rustc version
rustc 1.44.0-nightly (485c5fb6e 2020-04-08)# docs.rs version
docsrs 0.6.0 (a0205ec 2020-04-03)# build log
[INFO] running `"docker" "create" "-v" "/home/cratesfyi/workspace/builds/err-derive-0.2.4/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/err-derive-0.2.4/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 -20200408-1.44.0-nightly-485c5fb6e --static-root-path / --cap-lints warn --extern-html-root-url quote=https://docs.rs/quote/1.0.3 --extern-html-root-url proc_macro2=https://docs.rs/proc-macro2/1.0.9 --extern-html-root-url syn=https://docs.rs/syn/1.0.16 --extern-html-root-url proc_macro_error=https://docs.rs/proc-macro-error/1.0.1 --extern-html-root-url rustversion=https://docs.rs/rustversion/1.0.2 --extern-html-root-url synstructure=https://docs.rs/synstructure/0.12.3 --extern-html-root-url skeptic=https://docs.rs/skeptic/0.13.4" "-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"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0e257c4385882375efa3445f31ef09737f148cc94979153a1849d4fff35157da
[INFO] running `"docker" "start" "-a" "0e257c4385882375efa3445f31ef09737f148cc94979153a1849d4fff35157da"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.1
[INFO] [stderr]     Checking quote v1.0.3
[INFO] [stderr]     Checking synstructure v0.12.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling err-derive v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting err-derive v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.27s
[INFO] running `"docker" "inspect" "0e257c4385882375efa3445f31ef09737f148cc94979153a1849d4fff35157da"`
[INFO] running `"docker" "rm" "-f" "0e257c4385882375efa3445f31ef09737f148cc94979153a1849d4fff35157da"`
[INFO] [stdout] 0e257c4385882375efa3445f31ef09737f148cc94979153a1849d4fff35157da