[INFO] updating cached repository https://github.com/Joe-Jones/midi
[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] ec1b05f593396e80cd8c701df37a6472c196e1db
[INFO] documenting Joe-Jones/midi against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoe-Jones%2Fmidi" "/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/Joe-Jones/midi 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/Joe-Jones/midi
[INFO] finished tweaking git repo https://github.com/Joe-Jones/midi
[INFO] tweaked toml for git repo https://github.com/Joe-Jones/midi written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Joe-Jones/midi 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] 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" "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] 20a84527c9d0b0e884475a9cc1a48ce1b4e631a3afaf6dc9396244a5f60966b1
[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" "20a84527c9d0b0e884475a9cc1a48ce1b4e631a3afaf6dc9396244a5f60966b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20a84527c9d0b0e884475a9cc1a48ce1b4e631a3afaf6dc9396244a5f60966b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20a84527c9d0b0e884475a9cc1a48ce1b4e631a3afaf6dc9396244a5f60966b1", kill_on_drop: false }`
[INFO] [stdout] 20a84527c9d0b0e884475a9cc1a48ce1b4e631a3afaf6dc9396244a5f60966b1
[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" "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] bf4c2219cf5b18a5bad55ed688c83a30934fcad11cc33f7913b83df290ffe2b9
[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" "bf4c2219cf5b18a5bad55ed688c83a30934fcad11cc33f7913b83df290ffe2b9", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling libloading v0.4.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking jack-sys v0.1.5
[INFO] [stderr]     Checking jack v0.5.3
[INFO] [stderr]     Checking num-bigint v0.1.40
[INFO] [stderr]     Checking num-complex v0.1.40
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking time_calc v0.12.1
[INFO] [stderr]  Documenting steps v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.76s
[INFO] running `Command { std: "docker" "inspect" "bf4c2219cf5b18a5bad55ed688c83a30934fcad11cc33f7913b83df290ffe2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf4c2219cf5b18a5bad55ed688c83a30934fcad11cc33f7913b83df290ffe2b9", kill_on_drop: false }`
[INFO] [stdout] bf4c2219cf5b18a5bad55ed688c83a30934fcad11cc33f7913b83df290ffe2b9