[INFO] fetching crate cntr 1.5.1...
[INFO] documenting cntr-1.5.1 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate cntr 1.5.1 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate cntr 1.5.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cntr 1.5.1
[INFO] finished tweaking crates.io crate cntr 1.5.1
[INFO] tweaked toml for crates.io crate cntr 1.5.1 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate crates.io crate cntr 1.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3f2d7fdb78935700765e9219b3f01b0052bd6b55fac024b07b01d8fc1dffab9
[INFO] running `Command { std: "docker" "start" "-a" "a3f2d7fdb78935700765e9219b3f01b0052bd6b55fac024b07b01d8fc1dffab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3f2d7fdb78935700765e9219b3f01b0052bd6b55fac024b07b01d8fc1dffab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3f2d7fdb78935700765e9219b3f01b0052bd6b55fac024b07b01d8fc1dffab9", kill_on_drop: false }`
[INFO] [stdout] a3f2d7fdb78935700765e9219b3f01b0052bd6b55fac024b07b01d8fc1dffab9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f11f4291ea50fd1e310e8efe260e8293e521d0d40780f29890c6ffb3f4b964c
[INFO] running `Command { std: "docker" "start" "-a" "2f11f4291ea50fd1e310e8efe260e8293e521d0d40780f29890c6ffb3f4b964c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking cntr-fuse-abi v0.4.1
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking concurrent-hashmap v0.2.2
[INFO] [stderr]    Compiling cntr-fuse-sys v0.4.1
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking cntr-fuse v0.4.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]  Documenting cntr v1.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.20s
[INFO] running `Command { std: "docker" "inspect" "2f11f4291ea50fd1e310e8efe260e8293e521d0d40780f29890c6ffb3f4b964c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f11f4291ea50fd1e310e8efe260e8293e521d0d40780f29890c6ffb3f4b964c", kill_on_drop: false }`
[INFO] [stdout] 2f11f4291ea50fd1e310e8efe260e8293e521d0d40780f29890c6ffb3f4b964c
