[INFO] cloning repository https://github.com/hwchen/unproxy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hwchen/unproxy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhwchen%2Funproxy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhwchen%2Funproxy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fa9152fe0d6c35180a1a9d5bae07f889d5e42fb
[INFO] documenting hwchen/unproxy against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhwchen%2Funproxy" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hwchen/unproxy on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hwchen/unproxy
[INFO] finished tweaking git repo https://github.com/hwchen/unproxy
[INFO] tweaked toml for git repo https://github.com/hwchen/unproxy written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/hwchen/unproxy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vec-arena v0.5.0
[INFO] [stderr]   Downloaded simple-mutex v1.1.5
[INFO] [stderr]   Downloaded async-io v0.1.5
[INFO] [stderr]   Downloaded async-dup v1.2.1
[INFO] [stderr]   Downloaded futures-lite v0.1.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eedb7ea345c341086429469f65a7cf398a4e14e7f9e16abdbe1e9fa8604947f
[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" "0eedb7ea345c341086429469f65a7cf398a4e14e7f9e16abdbe1e9fa8604947f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eedb7ea345c341086429469f65a7cf398a4e14e7f9e16abdbe1e9fa8604947f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eedb7ea345c341086429469f65a7cf398a4e14e7f9e16abdbe1e9fa8604947f", kill_on_drop: false }`
[INFO] [stdout] 0eedb7ea345c341086429469f65a7cf398a4e14e7f9e16abdbe1e9fa8604947f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fa63ae8a9fdc7d36971e1e443acd7f5647dc5c4f9f1d15ce2856f2ce42954d9
[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" "3fa63ae8a9fdc7d36971e1e443acd7f5647dc5c4f9f1d15ce2856f2ce42954d9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking fastrand v1.3.3
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking waker-fn v1.0.0
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking vec-arena v0.5.0
[INFO] [stderr]     Checking event-listener v2.2.1
[INFO] [stderr]    Compiling anyhow v1.0.25
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking concurrent-queue v1.1.2
[INFO] [stderr]     Checking simple-mutex v1.1.5
[INFO] [stderr]     Checking futures-lite v0.1.9
[INFO] [stderr]     Checking async-dup v1.2.1
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking async-io v0.1.5
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]  Documenting unproxy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.96s
[INFO] running `Command { std: "docker" "inspect" "3fa63ae8a9fdc7d36971e1e443acd7f5647dc5c4f9f1d15ce2856f2ce42954d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fa63ae8a9fdc7d36971e1e443acd7f5647dc5c4f9f1d15ce2856f2ce42954d9", kill_on_drop: false }`
[INFO] [stdout] 3fa63ae8a9fdc7d36971e1e443acd7f5647dc5c4f9f1d15ce2856f2ce42954d9