[INFO] fetching crate darkroom 0.7.4...
[INFO] documenting darkroom-0.7.4 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate darkroom 0.7.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate darkroom 0.7.4 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate darkroom 0.7.4
[INFO] finished tweaking crates.io crate darkroom 0.7.4
[INFO] tweaked toml for crates.io crate darkroom 0.7.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate darkroom 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_proxy v0.4.1
[INFO] [stderr]   Downloaded ureq v2.1.1
[INFO] [stderr]   Downloaded shell-words v1.0.0
[INFO] [stderr]   Downloaded filmreel v0.6.2
[INFO] [stderr]   Downloaded syntect v4.5.0
[INFO] [stderr]   Downloaded plist v1.1.0
[INFO] [stderr]   Downloaded gethostname v0.2.1
[INFO] [stderr]   Downloaded serde-hashkey v0.4.0
[INFO] [stderr]   Downloaded mdcat v0.22.4
[INFO] [stderr]   Downloaded ordered-float v2.5.1
[INFO] [stderr]   Downloaded fancy-regex v0.3.5
[INFO] [stderr]   Downloaded colored_json v2.1.0
[INFO] [stderr]   Downloaded minus v3.4.0
[INFO] [stderr]   Downloaded onig_sys v69.7.0
[INFO] [stderr]   Downloaded onig v6.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 481327aecc5a450e48c6baf1f7089a4868f852d3246ab62ba78b535dbd46244d
[INFO] running `Command { std: "docker" "start" "-a" "481327aecc5a450e48c6baf1f7089a4868f852d3246ab62ba78b535dbd46244d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "481327aecc5a450e48c6baf1f7089a4868f852d3246ab62ba78b535dbd46244d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "481327aecc5a450e48c6baf1f7089a4868f852d3246ab62ba78b535dbd46244d", kill_on_drop: false }`
[INFO] [stdout] 481327aecc5a450e48c6baf1f7089a4868f852d3246ab62ba78b535dbd46244d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f54b51f8f34d341d44110441a3087dc5d8c755dac6b171809f9a66edc86a4e0
[INFO] running `Command { std: "docker" "start" "-a" "8f54b51f8f34d341d44110441a3087dc5d8c755dac6b171809f9a66edc86a4e0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking bytemuck v1.7.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking shell-words v1.0.0
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]    Compiling tokio v1.7.1
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling onig_sys v69.7.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking ordered-float v2.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking fancy-regex v0.3.5
[INFO] [stderr]     Checking env_proxy v0.4.1
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]     Checking colored-diff v0.2.2
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking socket2 v0.4.0
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[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]    Compiling mdcat v0.22.4
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking onig v6.2.0
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking rustls-native-certs v0.5.0
[INFO] [stderr]     Checking ureq v2.1.1
[INFO] [stderr]     Checking hyper v0.14.9
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking minus v3.4.0
[INFO] [stderr]     Checking argh v0.1.5
[INFO] [stderr]     Checking fehler v1.0.0
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking plist v1.1.0
[INFO] [stderr]     Checking serde-hashkey v0.4.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking syntect v4.5.0
[INFO] [stderr]     Checking filmreel v0.6.2
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking colored_json v2.1.0
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]     Checking darkroom v0.7.4 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting darkroom v0.7.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.40s
[INFO] running `Command { std: "docker" "inspect" "8f54b51f8f34d341d44110441a3087dc5d8c755dac6b171809f9a66edc86a4e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f54b51f8f34d341d44110441a3087dc5d8c755dac6b171809f9a66edc86a4e0", kill_on_drop: false }`
[INFO] [stdout] 8f54b51f8f34d341d44110441a3087dc5d8c755dac6b171809f9a66edc86a4e0
