[INFO] fetching crate liuhatry_threadpool_example 0.1.0...
[INFO] testing liuhatry_threadpool_example-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate liuhatry_threadpool_example 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate liuhatry_threadpool_example 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate liuhatry_threadpool_example 0.1.0
[INFO] finished tweaking crates.io crate liuhatry_threadpool_example 0.1.0
[INFO] tweaked toml for crates.io crate liuhatry_threadpool_example 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate liuhatry_threadpool_example 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e975dcd6b36fc02aaab870188a2a194851c6596cd02d0f5d348a7980947d938f
[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" "e975dcd6b36fc02aaab870188a2a194851c6596cd02d0f5d348a7980947d938f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e975dcd6b36fc02aaab870188a2a194851c6596cd02d0f5d348a7980947d938f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e975dcd6b36fc02aaab870188a2a194851c6596cd02d0f5d348a7980947d938f", kill_on_drop: false }`
[INFO] [stdout] e975dcd6b36fc02aaab870188a2a194851c6596cd02d0f5d348a7980947d938f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d9f7db9af9bcb8da2c278fbd9232f5783df9f0943130fc31abd9ff681ed4b76d
[INFO] running `Command { std: "docker" "start" "-a" "d9f7db9af9bcb8da2c278fbd9232f5783df9f0943130fc31abd9ff681ed4b76d", kill_on_drop: false }`
[INFO] [stderr]    Compiling liuhatry_threadpool_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "d9f7db9af9bcb8da2c278fbd9232f5783df9f0943130fc31abd9ff681ed4b76d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9f7db9af9bcb8da2c278fbd9232f5783df9f0943130fc31abd9ff681ed4b76d", kill_on_drop: false }`
[INFO] [stdout] d9f7db9af9bcb8da2c278fbd9232f5783df9f0943130fc31abd9ff681ed4b76d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7765f5663f7c207817cc1a622ea6942cc828ddc793d9ffefadcd9cb997564d74
[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" "7765f5663f7c207817cc1a622ea6942cc828ddc793d9ffefadcd9cb997564d74", kill_on_drop: false }`
[INFO] [stderr]    Compiling liuhatry_threadpool_example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "7765f5663f7c207817cc1a622ea6942cc828ddc793d9ffefadcd9cb997564d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7765f5663f7c207817cc1a622ea6942cc828ddc793d9ffefadcd9cb997564d74", kill_on_drop: false }`
[INFO] [stdout] 7765f5663f7c207817cc1a622ea6942cc828ddc793d9ffefadcd9cb997564d74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 112a4acdee3cf87676448d300aa24dcd96b2a36ba386d8e5ce1be9cc751acb22
[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" "112a4acdee3cf87676448d300aa24dcd96b2a36ba386d8e5ce1be9cc751acb22", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/liuhatry_threadpool_example-a834a13eeb4d186a
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/main-8d5388b6b45c0dd2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests liuhatry_threadpool_example
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "112a4acdee3cf87676448d300aa24dcd96b2a36ba386d8e5ce1be9cc751acb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112a4acdee3cf87676448d300aa24dcd96b2a36ba386d8e5ce1be9cc751acb22", kill_on_drop: false }`
[INFO] [stdout] 112a4acdee3cf87676448d300aa24dcd96b2a36ba386d8e5ce1be9cc751acb22