[INFO] fetching crate async-parallel 0.2.0...
[INFO] testing async-parallel-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate async-parallel 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate async-parallel 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-parallel 0.2.0
[INFO] finished tweaking crates.io crate async-parallel 0.2.0
[INFO] tweaked toml for crates.io crate async-parallel 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cefe6fce97ecc732505804ac1df08e47404cdf76cfa213e8052a2747eb6c620a
[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" "cefe6fce97ecc732505804ac1df08e47404cdf76cfa213e8052a2747eb6c620a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cefe6fce97ecc732505804ac1df08e47404cdf76cfa213e8052a2747eb6c620a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cefe6fce97ecc732505804ac1df08e47404cdf76cfa213e8052a2747eb6c620a", kill_on_drop: false }`
[INFO] [stdout] cefe6fce97ecc732505804ac1df08e47404cdf76cfa213e8052a2747eb6c620a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "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] bcbc8adeea59f73a953d8b19b1b74c1cbe66ecacccae8a6384ec50608cbf2d65
[INFO] running `Command { std: "docker" "start" "-a" "bcbc8adeea59f73a953d8b19b1b74c1cbe66ecacccae8a6384ec50608cbf2d65", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-parallel v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "bcbc8adeea59f73a953d8b19b1b74c1cbe66ecacccae8a6384ec50608cbf2d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcbc8adeea59f73a953d8b19b1b74c1cbe66ecacccae8a6384ec50608cbf2d65", kill_on_drop: false }`
[INFO] [stdout] bcbc8adeea59f73a953d8b19b1b74c1cbe66ecacccae8a6384ec50608cbf2d65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96f8155ccac3e8c1227e76c66e8ffedfe1ea64e41d7606ece7182bee08c9f48e
[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" "96f8155ccac3e8c1227e76c66e8ffedfe1ea64e41d7606ece7182bee08c9f48e", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-parallel v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "96f8155ccac3e8c1227e76c66e8ffedfe1ea64e41d7606ece7182bee08c9f48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f8155ccac3e8c1227e76c66e8ffedfe1ea64e41d7606ece7182bee08c9f48e", kill_on_drop: false }`
[INFO] [stdout] 96f8155ccac3e8c1227e76c66e8ffedfe1ea64e41d7606ece7182bee08c9f48e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4906215c79b5091d501eb44e69acd53b375474f2b0a635fa81ada4ea936a8fc1
[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" "4906215c79b5091d501eb44e69acd53b375474f2b0a635fa81ada4ea936a8fc1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_parallel-9fd2cf0ae3296300
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests async-parallel
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4906215c79b5091d501eb44e69acd53b375474f2b0a635fa81ada4ea936a8fc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4906215c79b5091d501eb44e69acd53b375474f2b0a635fa81ada4ea936a8fc1", kill_on_drop: false }`
[INFO] [stdout] 4906215c79b5091d501eb44e69acd53b375474f2b0a635fa81ada4ea936a8fc1