[INFO] fetching crate async-executor 1.4.0...
[INFO] testing async-executor-1.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate async-executor 1.4.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate async-executor 1.4.0 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-executor 1.4.0
[INFO] finished tweaking crates.io crate async-executor 1.4.0
[INFO] tweaked toml for crates.io crate async-executor 1.4.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate async-executor 1.4.0 already has a lockfile, it will not be regenerated
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 12bfe81eb106e3a80cb47c521347cdcac5169d5d1475700299272c15b5e5621a
[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" "12bfe81eb106e3a80cb47c521347cdcac5169d5d1475700299272c15b5e5621a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12bfe81eb106e3a80cb47c521347cdcac5169d5d1475700299272c15b5e5621a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12bfe81eb106e3a80cb47c521347cdcac5169d5d1475700299272c15b5e5621a", kill_on_drop: false }`
[INFO] [stdout] 12bfe81eb106e3a80cb47c521347cdcac5169d5d1475700299272c15b5e5621a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] 72673e4be4e1e665bb4136ba2d4787fefead32048c9424a01b7472e47060366c
[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" "72673e4be4e1e665bb4136ba2d4787fefead32048c9424a01b7472e47060366c", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling async-task v4.0.1
[INFO] [stderr]    Compiling futures-lite v1.11.0
[INFO] [stderr]    Compiling async-executor v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.55s
[INFO] running `Command { std: "docker" "inspect" "72673e4be4e1e665bb4136ba2d4787fefead32048c9424a01b7472e47060366c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72673e4be4e1e665bb4136ba2d4787fefead32048c9424a01b7472e47060366c", kill_on_drop: false }`
[INFO] [stdout] 72673e4be4e1e665bb4136ba2d4787fefead32048c9424a01b7472e47060366c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 541f32987a93854c73371b127bb46b8416b1983a1c09c1f0c7b75f59099aa4f0
[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" "541f32987a93854c73371b127bb46b8416b1983a1c09c1f0c7b75f59099aa4f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling easy-parallel v3.1.0
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling polling v2.0.0
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling async-io v1.1.9
[INFO] [stderr]    Compiling async-executor v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "541f32987a93854c73371b127bb46b8416b1983a1c09c1f0c7b75f59099aa4f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "541f32987a93854c73371b127bb46b8416b1983a1c09c1f0c7b75f59099aa4f0", kill_on_drop: false }`
[INFO] [stdout] 541f32987a93854c73371b127bb46b8416b1983a1c09c1f0c7b75f59099aa4f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] a91f59795afbd4263c3c7f2be6a6e925cec760861b80194db36ce36a98fdbac6
[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" "a91f59795afbd4263c3c7f2be6a6e925cec760861b80194db36ce36a98fdbac6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_executor-ab6bd3273fb33a26
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/drop-c33452783b740575
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]    Doc-tests async-executor
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test drop_finished_task_and_then_drop_executor ... ok
[INFO] [stdout] test await_task_after_dropping_executor ... ok
[INFO] [stdout] test drop_executor_and_then_drop_finished_task ... ok
[INFO] [stdout] test leaked_executor_leaks_everything ... ok
[INFO] [stdout] test executor_cancels_everything ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test src/lib.rs - Executor::is_empty (line 99) ... ok
[INFO] [stdout] test src/lib.rs - Executor::new (line 83) ... ok
[INFO] [stdout] test src/lib.rs - Executor::spawn (line 121) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor::new (line 311) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor::spawn (line 349) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor::is_empty (line 327) ... ok
[INFO] [stdout] test src/lib.rs - Executor::run (line 210) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor (line 284) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor::try_tick (line 383) ... ok
[INFO] [stdout] test src/lib.rs - Executor::tick (line 189) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor::tick (line 406) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] test src/lib.rs - Executor::try_tick (line 155) ... ok
[INFO] [stdout] test src/lib.rs - LocalExecutor::run (line 425) ... ok
[INFO] [stdout] test src/lib.rs - Executor (line 45) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a91f59795afbd4263c3c7f2be6a6e925cec760861b80194db36ce36a98fdbac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a91f59795afbd4263c3c7f2be6a6e925cec760861b80194db36ce36a98fdbac6", kill_on_drop: false }`
[INFO] [stdout] a91f59795afbd4263c3c7f2be6a6e925cec760861b80194db36ce36a98fdbac6