[INFO] cloning repository https://github.com/ithos-org/ithos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ithos-org/ithos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fithos-org%2Fithos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fithos-org%2Fithos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d58b2622df7710d506a59eb79a83bf2934def2f
[INFO] documenting ithos-org/ithos against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fithos-org%2Fithos" "/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/ithos-org/ithos on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ithos-org/ithos
[INFO] finished tweaking git repo https://github.com/ithos-org/ithos
[INFO] tweaked toml for git repo https://github.com/ithos-org/ithos written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ithos-org/ithos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2f9a47f9b6a4ec337eed82a05ab00179fdc5f9faace077c2b5715ff00d6c593
[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" "b2f9a47f9b6a4ec337eed82a05ab00179fdc5f9faace077c2b5715ff00d6c593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f9a47f9b6a4ec337eed82a05ab00179fdc5f9faace077c2b5715ff00d6c593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f9a47f9b6a4ec337eed82a05ab00179fdc5f9faace077c2b5715ff00d6c593", kill_on_drop: false }`
[INFO] [stdout] b2f9a47f9b6a4ec337eed82a05ab00179fdc5f9faace077c2b5715ff00d6c593
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d29cb9704b3531afef66963dff7953164a024bfceb7c2baa6dbd260af0b9a37f
[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" "d29cb9704b3531afef66963dff7953164a024bfceb7c2baa6dbd260af0b9a37f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.24
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling futures v0.1.14
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking untrusted v0.5.0
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]     Checking data-encoding v1.2.0
[INFO] [stderr]     Checking data-encoding v2.0.0-rc.1
[INFO] [stderr]     Checking protobuf v1.4.1
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking time v0.1.37
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]     Checking textwrap v0.6.0
[INFO] [stderr]     Checking rpassword v0.4.0
[INFO] [stderr]     Checking clap v2.25.0
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]    Compiling lmdb-sys v0.6.0
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking lmdb v0.6.0
[INFO] [stderr]    Compiling rayon v0.7.1
[INFO] [stderr]    Compiling ring v0.11.0
[INFO] [stderr]     Checking ring-pwhash v0.11.0
[INFO] [stderr]     Checking objecthash v0.4.1
[INFO] [stderr]     Checking backtrace v0.3.2
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]  Documenting ithos v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.16s
[INFO] running `Command { std: "docker" "inspect" "d29cb9704b3531afef66963dff7953164a024bfceb7c2baa6dbd260af0b9a37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d29cb9704b3531afef66963dff7953164a024bfceb7c2baa6dbd260af0b9a37f", kill_on_drop: false }`
[INFO] [stdout] d29cb9704b3531afef66963dff7953164a024bfceb7c2baa6dbd260af0b9a37f