[INFO] cloning repository https://github.com/stevebob/belt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stevebob/belt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Fbelt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstevebob%2Fbelt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e606988c7e432f81dfdb2a21d1376315cdd6cf52
[INFO] documenting stevebob/belt 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%2Fstevebob%2Fbelt" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stevebob/belt 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/stevebob/belt
[INFO] finished tweaking git repo https://github.com/stevebob/belt
[INFO] tweaked toml for git repo https://github.com/stevebob/belt written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/stevebob/belt 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a4af0898389ac332711eef31dee154aab2dd322e86bc2f7159d551efe62d74f0
[INFO] running `Command { std: "docker" "start" "-a" "a4af0898389ac332711eef31dee154aab2dd322e86bc2f7159d551efe62d74f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4af0898389ac332711eef31dee154aab2dd322e86bc2f7159d551efe62d74f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4af0898389ac332711eef31dee154aab2dd322e86bc2f7159d551efe62d74f0", kill_on_drop: false }`
[INFO] [stdout] a4af0898389ac332711eef31dee154aab2dd322e86bc2f7159d551efe62d74f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 4b373b0d396d6de65173a4e715675fd83ecb713ef2ed442f64aa51d2dae8ce76
[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" "4b373b0d396d6de65173a4e715675fd83ecb713ef2ed442f64aa51d2dae8ce76", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking inflate v0.4.2
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]     Checking x11-dl v2.17.5
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]     Checking cgmath v0.16.1
[INFO] [stderr]     Checking bytes v0.4.8
[INFO] [stderr]     Checking gfx_device_gl v0.15.3
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking nix v0.10.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking winit v0.13.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking gilrs v0.6.0
[INFO] [stderr]     Checking glutin v0.15.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking gfx_window_glutin v0.23.0
[INFO] [stderr]  Documenting belt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.00s
[INFO] running `Command { std: "docker" "inspect" "4b373b0d396d6de65173a4e715675fd83ecb713ef2ed442f64aa51d2dae8ce76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b373b0d396d6de65173a4e715675fd83ecb713ef2ed442f64aa51d2dae8ce76", kill_on_drop: false }`
[INFO] [stdout] 4b373b0d396d6de65173a4e715675fd83ecb713ef2ed442f64aa51d2dae8ce76