[INFO] cloning repository https://github.com/nao-kobayashi/file_checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nao-kobayashi/file_checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnao-kobayashi%2Ffile_checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnao-kobayashi%2Ffile_checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f15ecf0c8da99997cb2a3580887f1b865c1adbe8
[INFO] documenting nao-kobayashi/file_checker 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%2Fnao-kobayashi%2Ffile_checker" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nao-kobayashi/file_checker 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/nao-kobayashi/file_checker
[INFO] finished tweaking git repo https://github.com/nao-kobayashi/file_checker
[INFO] tweaked toml for git repo https://github.com/nao-kobayashi/file_checker written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/nao-kobayashi/file_checker 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 4526c7e63266a9602f1773851d9e0b173ece80da70e998933e031792be4ce6d5
[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" "4526c7e63266a9602f1773851d9e0b173ece80da70e998933e031792be4ce6d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4526c7e63266a9602f1773851d9e0b173ece80da70e998933e031792be4ce6d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4526c7e63266a9602f1773851d9e0b173ece80da70e998933e031792be4ce6d5", kill_on_drop: false }`
[INFO] [stdout] 4526c7e63266a9602f1773851d9e0b173ece80da70e998933e031792be4ce6d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 27c98d59f0148957e177f095810985932edec0b623ef0b1eb5e92e3a8a3e9788
[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" "27c98d59f0148957e177f095810985932edec0b623ef0b1eb5e92e3a8a3e9788", kill_on_drop: false }`
[INFO] [stderr]  Documenting file_checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/md5/mod.rs:256:2
[INFO] [stdout]     |
[INFO] [stdout] 256 |     (x ^ y ^ z)
[INFO] [stdout]     |     ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/md5/mod.rs:260:2
[INFO] [stdout]     |
[INFO] [stdout] 260 |     (y ^ (x | (!z)))
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "27c98d59f0148957e177f095810985932edec0b623ef0b1eb5e92e3a8a3e9788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c98d59f0148957e177f095810985932edec0b623ef0b1eb5e92e3a8a3e9788", kill_on_drop: false }`
[INFO] [stdout] 27c98d59f0148957e177f095810985932edec0b623ef0b1eb5e92e3a8a3e9788