[INFO] updating cached repository https://github.com/guthrum/AoC2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4203da9497df4b2fbaeed39256d630ea988a154
[INFO] documenting guthrum/AoC2019 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguthrum%2FAoC2019" "/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/guthrum/AoC2019 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guthrum/AoC2019
[INFO] finished tweaking git repo https://github.com/guthrum/AoC2019
[INFO] tweaked toml for git repo https://github.com/guthrum/AoC2019 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/guthrum/AoC2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c27595016f14e38e46182b1f293a0f7c7931594b7e76ae5c28a39b98a60bb9b
[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" "0c27595016f14e38e46182b1f293a0f7c7931594b7e76ae5c28a39b98a60bb9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c27595016f14e38e46182b1f293a0f7c7931594b7e76ae5c28a39b98a60bb9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c27595016f14e38e46182b1f293a0f7c7931594b7e76ae5c28a39b98a60bb9b", kill_on_drop: false }`
[INFO] [stdout] 0c27595016f14e38e46182b1f293a0f7c7931594b7e76ae5c28a39b98a60bb9b
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8ec8b4448431e6eeb365f6bfc5ee8f20c961276134c8a87f1dbd16dcdb60e45
[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" "b8ec8b4448431e6eeb365f6bfc5ee8f20c961276134c8a87f1dbd16dcdb60e45", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking termion v1.5.4
[INFO] [stderr]     Checking AoC19 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting AoC19 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/int_code/monitor.rs:94:21
[INFO] [stdout]     |
[INFO] [stdout] 94  | /                     match obj {
[INFO] [stdout] 95  | |                         DisplayObject::Empty => {
[INFO] [stdout] 96  | |                             write!(stdout, "{}{} ", color::Fg(color::Reset), pos)
[INFO] [stdout] 97  | |                         }
[INFO] [stdout] ...   |
[INFO] [stdout] 105 | |                         }
[INFO] [stdout] 106 | |                     };
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.54s
[INFO] running `Command { std: "docker" "inspect" "b8ec8b4448431e6eeb365f6bfc5ee8f20c961276134c8a87f1dbd16dcdb60e45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ec8b4448431e6eeb365f6bfc5ee8f20c961276134c8a87f1dbd16dcdb60e45", kill_on_drop: false }`
[INFO] [stdout] b8ec8b4448431e6eeb365f6bfc5ee8f20c961276134c8a87f1dbd16dcdb60e45