[INFO] cloning repository https://github.com/AgustinCB/ruthless
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AgustinCB/ruthless" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f76e528d0d38ccde026431ba842caec45d8b187
[INFO] documenting AgustinCB/ruthless against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAgustinCB%2Fruthless" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AgustinCB/ruthless on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AgustinCB/ruthless
[INFO] finished tweaking git repo https://github.com/AgustinCB/ruthless
[INFO] tweaked toml for git repo https://github.com/AgustinCB/ruthless written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/AgustinCB/ruthless already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea3fb5702915f9ebb234319d1a0730f1503120c0ca39e4bcfe38a86ebd2ecc02
[INFO] running `Command { std: "docker" "start" "-a" "ea3fb5702915f9ebb234319d1a0730f1503120c0ca39e4bcfe38a86ebd2ecc02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea3fb5702915f9ebb234319d1a0730f1503120c0ca39e4bcfe38a86ebd2ecc02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea3fb5702915f9ebb234319d1a0730f1503120c0ca39e4bcfe38a86ebd2ecc02", kill_on_drop: false }`
[INFO] [stdout] ea3fb5702915f9ebb234319d1a0730f1503120c0ca39e4bcfe38a86ebd2ecc02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d8f16c2afcd44b540cac0599cc4b43761f6c6c66166077bb2d485618c0a473f
[INFO] running `Command { std: "docker" "start" "-a" "4d8f16c2afcd44b540cac0599cc4b43761f6c6c66166077bb2d485618c0a473f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking tar v0.4.22
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]  Documenting ruthless v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.75s
[INFO] running `Command { std: "docker" "inspect" "4d8f16c2afcd44b540cac0599cc4b43761f6c6c66166077bb2d485618c0a473f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8f16c2afcd44b540cac0599cc4b43761f6c6c66166077bb2d485618c0a473f", kill_on_drop: false }`
[INFO] [stdout] 4d8f16c2afcd44b540cac0599cc4b43761f6c6c66166077bb2d485618c0a473f