[INFO] cloning repository https://github.com/BarcodeResource/rust_barcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BarcodeResource/rust_barcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBarcodeResource%2Frust_barcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBarcodeResource%2Frust_barcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d72c493948ae6c38dc520c89ffb08d03ec3f6d8
[INFO] documenting BarcodeResource/rust_barcode against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBarcodeResource%2Frust_barcode" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BarcodeResource/rust_barcode on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BarcodeResource/rust_barcode
[INFO] finished tweaking git repo https://github.com/BarcodeResource/rust_barcode
[INFO] tweaked toml for git repo https://github.com/BarcodeResource/rust_barcode written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/BarcodeResource/rust_barcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "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] 93969f3c53f8c9cac33ab32bd5645f1a4a4fdf001740e7f4498b0bea624ec591
[INFO] running `Command { std: "docker" "start" "-a" "93969f3c53f8c9cac33ab32bd5645f1a4a4fdf001740e7f4498b0bea624ec591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93969f3c53f8c9cac33ab32bd5645f1a4a4fdf001740e7f4498b0bea624ec591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93969f3c53f8c9cac33ab32bd5645f1a4a4fdf001740e7f4498b0bea624ec591", kill_on_drop: false }`
[INFO] [stdout] 93969f3c53f8c9cac33ab32bd5645f1a4a4fdf001740e7f4498b0bea624ec591
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 93204b2c8d407d68bdc242ebb3fc8fc1222247c9feb4258d59c288d56889fae6
[INFO] running `Command { std: "docker" "start" "-a" "93204b2c8d407d68bdc242ebb3fc8fc1222247c9feb4258d59c288d56889fae6", kill_on_drop: false }`
[INFO] [stderr]  Documenting barcode_command v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/barcode/postnet.rs:48:30
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     result = (10 - result);
[INFO] [stdout]    |                              ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "93204b2c8d407d68bdc242ebb3fc8fc1222247c9feb4258d59c288d56889fae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93204b2c8d407d68bdc242ebb3fc8fc1222247c9feb4258d59c288d56889fae6", kill_on_drop: false }`
[INFO] [stdout] 93204b2c8d407d68bdc242ebb3fc8fc1222247c9feb4258d59c288d56889fae6