[INFO] cloning repository https://github.com/laruh/learn_rust_by_building_app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laruh/learn_rust_by_building_app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaruh%2Flearn_rust_by_building_app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaruh%2Flearn_rust_by_building_app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ee24989faed60843cf92a5c2006483b8f5df07d
[INFO] documenting laruh/learn_rust_by_building_app against nightly for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaruh%2Flearn_rust_by_building_app" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/laruh/learn_rust_by_building_app on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/laruh/learn_rust_by_building_app
[INFO] finished tweaking git repo https://github.com/laruh/learn_rust_by_building_app
[INFO] tweaked toml for git repo https://github.com/laruh/learn_rust_by_building_app written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/laruh/learn_rust_by_building_app already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4924c9adce381a27932fadf4727d6f982e8f940b2a08928088a3de35dbfcd7a
[INFO] running `Command { std: "docker" "start" "-a" "d4924c9adce381a27932fadf4727d6f982e8f940b2a08928088a3de35dbfcd7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4924c9adce381a27932fadf4727d6f982e8f940b2a08928088a3de35dbfcd7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4924c9adce381a27932fadf4727d6f982e8f940b2a08928088a3de35dbfcd7a", kill_on_drop: false }`
[INFO] [stdout] d4924c9adce381a27932fadf4727d6f982e8f940b2a08928088a3de35dbfcd7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04d972433c217ea7d7572622f9a50e49205ee08a778ecd0de6c204ee0e5bcdb2
[INFO] running `Command { std: "docker" "start" "-a" "04d972433c217ea7d7572622f9a50e49205ee08a778ecd0de6c204ee0e5bcdb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.94
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]  Documenting learn_rust_by_building_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking learn_rust_by_building_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `learn_rust_by_building_app`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name arc_mutex_threads src/bin/arc_mutex_threads.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=61ecfa059a273fef -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-449e0a7632eeefed.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-b65679994d72c9ed.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-953c0c9c26457b2e.rmeta --extern activity=/opt/rustwide/target/debug/deps/libactivity-a79926509d4f9dc2.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-c721aebc0ceeb5a4.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-977155b608dc2072.rmeta --cap-lints=forbid --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "04d972433c217ea7d7572622f9a50e49205ee08a778ecd0de6c204ee0e5bcdb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d972433c217ea7d7572622f9a50e49205ee08a778ecd0de6c204ee0e5bcdb2", kill_on_drop: false }`
[INFO] [stdout] 04d972433c217ea7d7572622f9a50e49205ee08a778ecd0de6c204ee0e5bcdb2