error-chain 0.12.4

Yet another error boilerplate library.
Documentation
Build #277419 2020-08-02T17:54:12.995066+00:00
# rustc version
rustc 1.47.0-nightly (6c8927b0c 2020-07-26)
# docs.rs version
docsrs 0.6.0 (cab5014 2020-08-01)

# build log
[INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/error-chain-0.12.4/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/error-chain-0.12.4/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 -20200726-1.47.0-nightly-6c8927b0c --static-root-path / --cap-lints warn --extern-html-root-url backtrace=https://docs.rs/backtrace/0.3.48 --extern-html-root-url version_check=https://docs.rs/version_check/0.9.2" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--lib" "--no-deps" "-j2", kill_on_drop: false }`
[INFO] [stdout] 586d00734f7e84916c28a3c6a2cb590c3c2826d677b2a3e04ef1b11c9915729d
[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" "586d00734f7e84916c28a3c6a2cb590c3c2826d677b2a3e04ef1b11c9915729d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling error-chain v0.12.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking addr2line v0.12.1
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]  Documenting error-chain v0.12.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.65s
[INFO] running `Command { std: "docker" "inspect" "586d00734f7e84916c28a3c6a2cb590c3c2826d677b2a3e04ef1b11c9915729d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "586d00734f7e84916c28a3c6a2cb590c3c2826d677b2a3e04ef1b11c9915729d", kill_on_drop: false }`
[INFO] [stdout] 586d00734f7e84916c28a3c6a2cb590c3c2826d677b2a3e04ef1b11c9915729d