[INFO] cloning repository https://github.com/matklad/thrench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/thrench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fthrench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fthrench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2bdf941a5f1d0863ab28522e1fe0e303ba20cd5
[INFO] documenting matklad/thrench 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%2Fmatklad%2Fthrench" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/thrench 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/matklad/thrench
[INFO] finished tweaking git repo https://github.com/matklad/thrench
[INFO] tweaked toml for git repo https://github.com/matklad/thrench written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/thrench 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 7d4192498b54b78384e3c69702c9a41bab9a03978f7c965f17abdbf2608590d8
[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" "7d4192498b54b78384e3c69702c9a41bab9a03978f7c965f17abdbf2608590d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d4192498b54b78384e3c69702c9a41bab9a03978f7c965f17abdbf2608590d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d4192498b54b78384e3c69702c9a41bab9a03978f7c965f17abdbf2608590d8", kill_on_drop: false }`
[INFO] [stdout] 7d4192498b54b78384e3c69702c9a41bab9a03978f7c965f17abdbf2608590d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] de573fde71200096abbafe20d49f1c79a0367267b9b814378d24e49f08e31fd7
[INFO] running `Command { std: "docker" "start" "-a" "de573fde71200096abbafe20d49f1c79a0367267b9b814378d24e49f08e31fd7", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking unicode-segmentation v1.1.0
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking futures v0.1.10
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking term_size v0.2.2
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking clap v2.20.4
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking rayon v0.6.0
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking tokio-core v0.1.4
[INFO] [stderr]     Checking tokio-proto v0.1.0
[INFO] [stderr]     Checking thrench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting thrench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.72s
[INFO] running `Command { std: "docker" "inspect" "de573fde71200096abbafe20d49f1c79a0367267b9b814378d24e49f08e31fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de573fde71200096abbafe20d49f1c79a0367267b9b814378d24e49f08e31fd7", kill_on_drop: false }`
[INFO] [stdout] de573fde71200096abbafe20d49f1c79a0367267b9b814378d24e49f08e31fd7