[INFO] cloning repository https://github.com/bds0900/assignment2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bds0900/assignment2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbds0900%2Fassignment2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbds0900%2Fassignment2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c6e389a81110d235f1153b66af1ea4534279e2db
[INFO] documenting bds0900/assignment2 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%2Fbds0900%2Fassignment2" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bds0900/assignment2 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/bds0900/assignment2
[INFO] finished tweaking git repo https://github.com/bds0900/assignment2
[INFO] tweaked toml for git repo https://github.com/bds0900/assignment2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/bds0900/assignment2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] b80587c35c1da0b580d31790a06022790407f7881e5759d4c7b7b79f27e0b65e
[INFO] running `Command { std: "docker" "start" "-a" "b80587c35c1da0b580d31790a06022790407f7881e5759d4c7b7b79f27e0b65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b80587c35c1da0b580d31790a06022790407f7881e5759d4c7b7b79f27e0b65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b80587c35c1da0b580d31790a06022790407f7881e5759d4c7b7b79f27e0b65e", kill_on_drop: false }`
[INFO] [stdout] b80587c35c1da0b580d31790a06022790407f7881e5759d4c7b7b79f27e0b65e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] f0ce3b475242ef903b6bbcd86d9b0b34fb59a6b301ceb7e6abebe8beaf855b6a
[INFO] running `Command { std: "docker" "start" "-a" "f0ce3b475242ef903b6bbcd86d9b0b34fb59a6b301ceb7e6abebe8beaf855b6a", kill_on_drop: false }`
[INFO] [stderr]  Documenting assignment2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking assignment2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `ret` is never read
[INFO] [stdout]   --> src/lib.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let mut ret = 0;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.05s
[INFO] running `Command { std: "docker" "inspect" "f0ce3b475242ef903b6bbcd86d9b0b34fb59a6b301ceb7e6abebe8beaf855b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0ce3b475242ef903b6bbcd86d9b0b34fb59a6b301ceb7e6abebe8beaf855b6a", kill_on_drop: false }`
[INFO] [stdout] f0ce3b475242ef903b6bbcd86d9b0b34fb59a6b301ceb7e6abebe8beaf855b6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] c595f801310acb44c24d422edf6e010e465decdeec0530bc29255b8b48d9d2da
[INFO] running `Command { std: "docker" "start" "-a" "c595f801310acb44c24d422edf6e010e465decdeec0530bc29255b8b48d9d2da", kill_on_drop: false }`
[INFO] [stderr]  Documenting assignment2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "c595f801310acb44c24d422edf6e010e465decdeec0530bc29255b8b48d9d2da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c595f801310acb44c24d422edf6e010e465decdeec0530bc29255b8b48d9d2da", kill_on_drop: false }`
[INFO] [stdout] c595f801310acb44c24d422edf6e010e465decdeec0530bc29255b8b48d9d2da