[INFO] cloning repository https://github.com/89netraM/synacor_challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/89netraM/synacor_challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F89netraM%2Fsynacor_challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F89netraM%2Fsynacor_challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74cb5efe08a4094fbc76f05bfe9fb294135ed676
[INFO] documenting 89netraM/synacor_challenge against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F89netraM%2Fsynacor_challenge" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/89netraM/synacor_challenge on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/89netraM/synacor_challenge
[INFO] finished tweaking git repo https://github.com/89netraM/synacor_challenge
[INFO] tweaked toml for git repo https://github.com/89netraM/synacor_challenge written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/89netraM/synacor_challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctrlc v3.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b4c0ddfd5034861bdf752611e2da81f63cd46ef41a327873ae78ca5094fb5ab
[INFO] running `Command { std: "docker" "start" "-a" "8b4c0ddfd5034861bdf752611e2da81f63cd46ef41a327873ae78ca5094fb5ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b4c0ddfd5034861bdf752611e2da81f63cd46ef41a327873ae78ca5094fb5ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4c0ddfd5034861bdf752611e2da81f63cd46ef41a327873ae78ca5094fb5ab", kill_on_drop: false }`
[INFO] [stdout] 8b4c0ddfd5034861bdf752611e2da81f63cd46ef41a327873ae78ca5094fb5ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 705369f9f2ebe7fc31c812788c8a9699650c350b457dd033cf9d506062e9036a
[INFO] running `Command { std: "docker" "start" "-a" "705369f9f2ebe7fc31c812788c8a9699650c350b457dd033cf9d506062e9036a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]  Documenting synacor_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 26s
[INFO] running `Command { std: "docker" "inspect" "705369f9f2ebe7fc31c812788c8a9699650c350b457dd033cf9d506062e9036a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "705369f9f2ebe7fc31c812788c8a9699650c350b457dd033cf9d506062e9036a", kill_on_drop: false }`
[INFO] [stdout] 705369f9f2ebe7fc31c812788c8a9699650c350b457dd033cf9d506062e9036a