[INFO] cloning repository https://github.com/ls1-sys-prog-course/task4-concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ls1-sys-prog-course/task4-concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fls1-sys-prog-course%2Ftask4-concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fls1-sys-prog-course%2Ftask4-concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e22348b67c29068b1a9fc2ef180cbeecb84a88cf
[INFO] documenting ls1-sys-prog-course/task4-concurrency 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%2Fls1-sys-prog-course%2Ftask4-concurrency" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ls1-sys-prog-course/task4-concurrency 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/ls1-sys-prog-course/task4-concurrency
[INFO] finished tweaking git repo https://github.com/ls1-sys-prog-course/task4-concurrency
[INFO] tweaked toml for git repo https://github.com/ls1-sys-prog-course/task4-concurrency written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/ls1-sys-prog-course/task4-concurrency 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] c201773584b1c3c1040892fd1c2a38fea5442ed5d5b921856620d2cb6e3ea9cf
[INFO] running `Command { std: "docker" "start" "-a" "c201773584b1c3c1040892fd1c2a38fea5442ed5d5b921856620d2cb6e3ea9cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c201773584b1c3c1040892fd1c2a38fea5442ed5d5b921856620d2cb6e3ea9cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c201773584b1c3c1040892fd1c2a38fea5442ed5d5b921856620d2cb6e3ea9cf", kill_on_drop: false }`
[INFO] [stdout] c201773584b1c3c1040892fd1c2a38fea5442ed5d5b921856620d2cb6e3ea9cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 63f0184132a417e84a43ca18fc8da923be1d3b0965a5318a9eb7eb3ac29ee07e
[INFO] running `Command { std: "docker" "start" "-a" "63f0184132a417e84a43ca18fc8da923be1d3b0965a5318a9eb7eb3ac29ee07e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]  Documenting lockfreehashmap v0.0.1 (/opt/rustwide/workdir/lockfreehashmap)
[INFO] [stderr]  Documenting lockhashmap v0.0.1 (/opt/rustwide/workdir/lockhashmap)
[INFO] [stderr]  Documenting cspinlock v0.0.1 (/opt/rustwide/workdir/cspinlock)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.54s
[INFO] running `Command { std: "docker" "inspect" "63f0184132a417e84a43ca18fc8da923be1d3b0965a5318a9eb7eb3ac29ee07e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f0184132a417e84a43ca18fc8da923be1d3b0965a5318a9eb7eb3ac29ee07e", kill_on_drop: false }`
[INFO] [stdout] 63f0184132a417e84a43ca18fc8da923be1d3b0965a5318a9eb7eb3ac29ee07e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 2030094262bf826962dfe11705fe72e376a53a8bbd16a7be91d14fafdadbd1bd
[INFO] running `Command { std: "docker" "start" "-a" "2030094262bf826962dfe11705fe72e376a53a8bbd16a7be91d14fafdadbd1bd", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "2030094262bf826962dfe11705fe72e376a53a8bbd16a7be91d14fafdadbd1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2030094262bf826962dfe11705fe72e376a53a8bbd16a7be91d14fafdadbd1bd", kill_on_drop: false }`
[INFO] [stdout] 2030094262bf826962dfe11705fe72e376a53a8bbd16a7be91d14fafdadbd1bd