[INFO] cloning repository https://github.com/talves/rust-book-concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/talves/rust-book-concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftalves%2Frust-book-concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftalves%2Frust-book-concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81e36e9553afd298b39920f6e2442b998c341f0f
[INFO] documenting talves/rust-book-concurrency against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftalves%2Frust-book-concurrency" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/talves/rust-book-concurrency on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/talves/rust-book-concurrency
[INFO] finished tweaking git repo https://github.com/talves/rust-book-concurrency
[INFO] tweaked toml for git repo https://github.com/talves/rust-book-concurrency written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate git repo https://github.com/talves/rust-book-concurrency already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f918e651e685bd4ffce03ceee15d79d1df1710348514d5fcb56b9d3929cca306
[INFO] running `Command { std: "docker" "start" "-a" "f918e651e685bd4ffce03ceee15d79d1df1710348514d5fcb56b9d3929cca306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f918e651e685bd4ffce03ceee15d79d1df1710348514d5fcb56b9d3929cca306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f918e651e685bd4ffce03ceee15d79d1df1710348514d5fcb56b9d3929cca306", kill_on_drop: false }`
[INFO] [stdout] f918e651e685bd4ffce03ceee15d79d1df1710348514d5fcb56b9d3929cca306
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 024a092b45558d9c758c670ae2985b3c970b026f54899d18a56056f1e43c55be
[INFO] running `Command { std: "docker" "start" "-a" "024a092b45558d9c758c670ae2985b3c970b026f54899d18a56056f1e43c55be", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting rust-book-concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.80s
[INFO] running `Command { std: "docker" "inspect" "024a092b45558d9c758c670ae2985b3c970b026f54899d18a56056f1e43c55be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "024a092b45558d9c758c670ae2985b3c970b026f54899d18a56056f1e43c55be", kill_on_drop: false }`
[INFO] [stdout] 024a092b45558d9c758c670ae2985b3c970b026f54899d18a56056f1e43c55be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] a38548d91b95262a8389eca726116f39056e2e20d30cde2311efbc4eb04519d2
[INFO] running `Command { std: "docker" "start" "-a" "a38548d91b95262a8389eca726116f39056e2e20d30cde2311efbc4eb04519d2", kill_on_drop: false }`
[INFO] [stderr]  Documenting rust-book-concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "a38548d91b95262a8389eca726116f39056e2e20d30cde2311efbc4eb04519d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a38548d91b95262a8389eca726116f39056e2e20d30cde2311efbc4eb04519d2", kill_on_drop: false }`
[INFO] [stdout] a38548d91b95262a8389eca726116f39056e2e20d30cde2311efbc4eb04519d2