[INFO] cloning repository https://github.com/tailhook/lithos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tailhook/lithos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftailhook%2Flithos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftailhook%2Flithos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eaf420161293864dbecd435266b73635f1ce9bb0
[INFO] documenting tailhook/lithos against 1.73.0 for beta-1.74-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftailhook%2Flithos" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tailhook/lithos on toolchain 1.73.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.73.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tailhook/lithos
[INFO] finished tweaking git repo https://github.com/tailhook/lithos
[INFO] tweaked toml for git repo https://github.com/tailhook/lithos written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tailhook/lithos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.73.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded byteorder v1.2.4
[INFO] [stderr]   Downloaded syslog v3.3.0
[INFO] [stderr]   Downloaded scan_dir v0.3.3
[INFO] [stderr]   Downloaded cfg-if v0.1.5
[INFO] [stderr]   Downloaded unix_socket v0.5.0
[INFO] [stderr]   Downloaded generic-array v0.9.0
[INFO] [stderr]   Downloaded sha2 v0.7.1
[INFO] [stderr]   Downloaded itoa v0.4.2
[INFO] [stderr]   Downloaded redox_syscall v0.1.40
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] [stderr]   Downloaded wincolor v1.0.0
[INFO] [stderr]   Downloaded ipnetwork v0.13.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.9
[INFO] [stderr]   Downloaded rand_core v0.2.1
[INFO] [stderr]   Downloaded backtrace v0.3.9
[INFO] [stderr]   Downloaded serde_derive v1.0.71
[INFO] [stderr]   Downloaded cc v1.0.18
[INFO] [stderr]   Downloaded serde v1.0.71
[INFO] [stderr]   Downloaded backtrace-sys v0.1.23
[INFO] [stderr]   Downloaded winapi v0.3.5
[INFO] [stderr]   Downloaded rust-crypto v0.2.36
[INFO] [stderr]   Downloaded regex-syntax v0.6.2
[INFO] [stderr]   Downloaded signal v0.6.0
[INFO] [stderr]   Downloaded fern v0.4.4
[INFO] [stderr]   Downloaded bitflags v1.0.3
[INFO] [stderr]   Downloaded log v0.4.3
[INFO] [stderr]   Downloaded ucd-util v0.1.1
[INFO] [stderr]   Downloaded unshare v0.5.0
[INFO] [stderr]   Downloaded structopt v0.2.10
[INFO] [stderr]   Downloaded env_logger v0.5.12
[INFO] [stderr]   Downloaded synstructure v0.9.0
[INFO] [stderr]   Downloaded failure_derive v0.1.2
[INFO] [stderr]   Downloaded libcantal v0.3.2
[INFO] [stderr]   Downloaded gcc v0.3.54
[INFO] [stderr]   Downloaded serde_json v1.0.24
[INFO] [stderr]   Downloaded base64 v0.9.2
[INFO] [stderr]   Downloaded time v0.1.40
[INFO] [stderr]   Downloaded aho-corasick v0.6.6
[INFO] [stderr]   Downloaded memchr v2.0.1
[INFO] [stderr]   Downloaded failure v0.1.2
[INFO] [stderr]   Downloaded libmount v0.1.11
[INFO] [stderr]   Downloaded serde_str v0.1.0
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded argparse v0.2.1
[INFO] [stderr]   Downloaded termcolor v1.0.1
[INFO] [stderr]   Downloaded matches v0.1.7
[INFO] [stderr]   Downloaded atomic v0.3.4
[INFO] [stderr]   Downloaded humannum v0.1.0
[INFO] [stderr]   Downloaded structopt-derive v0.2.10
[INFO] [stderr]   Downloaded byte-tools v0.2.0
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded humantime v1.1.1
[INFO] [stderr]   Downloaded arrayref v0.3.4
[INFO] [stderr]   Downloaded num-traits v0.2.5
[INFO] [stderr]   Downloaded block-buffer v0.3.3
[INFO] [stderr]   Downloaded thread_local v0.3.5
[INFO] [stderr]   Downloaded constant_time_eq v0.1.3
[INFO] [stderr]   Downloaded crypto-mac v0.5.2
[INFO] [stderr]   Downloaded blake2 v0.7.1
[INFO] [stderr]   Downloaded safemem v0.2.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.12
[INFO] [stderr]   Downloaded digest v0.7.5
[INFO] [stderr]   Downloaded quote v0.6.6
[INFO] [stderr]   Downloaded quire v0.4.1
[INFO] [stderr]   Downloaded syn v0.14.8
[INFO] [stderr]   Downloaded ssh-keys v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+1.73.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa3cb94e99df8e55d33c466869e30b2e199c417f0dc3dd746a0b074983136c8e
[INFO] running `Command { std: "docker" "start" "-a" "fa3cb94e99df8e55d33c466869e30b2e199c417f0dc3dd746a0b074983136c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa3cb94e99df8e55d33c466869e30b2e199c417f0dc3dd746a0b074983136c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa3cb94e99df8e55d33c466869e30b2e199c417f0dc3dd746a0b074983136c8e", kill_on_drop: false }`
[INFO] [stdout] fa3cb94e99df8e55d33c466869e30b2e199c417f0dc3dd746a0b074983136c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+1.73.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 266093d75a7c5b9071caed7f6c1078a6310042dec60f60e9722824717f8f845a
[INFO] running `Command { std: "docker" "start" "-a" "266093d75a7c5b9071caed7f6c1078a6310042dec60f60e9722824717f8f845a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "266093d75a7c5b9071caed7f6c1078a6310042dec60f60e9722824717f8f845a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "266093d75a7c5b9071caed7f6c1078a6310042dec60f60e9722824717f8f845a", kill_on_drop: false }`
[INFO] [stdout] 266093d75a7c5b9071caed7f6c1078a6310042dec60f60e9722824717f8f845a