[INFO] fetching crate async-task 4.0.3...
[INFO] testing async-task-4.0.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate async-task 4.0.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate async-task 4.0.3 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-task 4.0.3
[INFO] finished tweaking crates.io crate async-task 4.0.3
[INFO] tweaked toml for crates.io crate async-task 4.0.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate async-task 4.0.3 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] f10def42f1405c524d309c135f0c1e6c471e2ff4074249ffd4e1e21c8fbb8f9f
[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" "f10def42f1405c524d309c135f0c1e6c471e2ff4074249ffd4e1e21c8fbb8f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f10def42f1405c524d309c135f0c1e6c471e2ff4074249ffd4e1e21c8fbb8f9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f10def42f1405c524d309c135f0c1e6c471e2ff4074249ffd4e1e21c8fbb8f9f", kill_on_drop: false }`
[INFO] [stdout] f10def42f1405c524d309c135f0c1e6c471e2ff4074249ffd4e1e21c8fbb8f9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d3b6f3ebcca1318863d33133024732313baf41470977438bdfd2568c3e639871
[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" "d3b6f3ebcca1318863d33133024732313baf41470977438bdfd2568c3e639871", kill_on_drop: false }`
[INFO] [stderr]    Compiling async-task v4.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "d3b6f3ebcca1318863d33133024732313baf41470977438bdfd2568c3e639871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3b6f3ebcca1318863d33133024732313baf41470977438bdfd2568c3e639871", kill_on_drop: false }`
[INFO] [stdout] d3b6f3ebcca1318863d33133024732313baf41470977438bdfd2568c3e639871
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bf44d2f826bdb4333a65caf2ad0b79b0d406885b12e3977eef56c061cfc0a97c
[INFO] running `Command { std: "docker" "start" "-a" "bf44d2f826bdb4333a65caf2ad0b79b0d406885b12e3977eef56c061cfc0a97c", kill_on_drop: false }`
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling fastrand v1.3.5
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling arc-swap v0.4.7
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling easy-parallel v3.1.0
[INFO] [stderr]    Compiling lock_api v0.4.1
[INFO] [stderr]    Compiling spinning_top v0.2.2
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling async-mutex v1.3.0
[INFO] [stderr]    Compiling async-semaphore v1.1.0
[INFO] [stderr]    Compiling flume v0.9.0
[INFO] [stderr]    Compiling async-barrier v1.0.1
[INFO] [stderr]    Compiling async-rwlock v1.1.0
[INFO] [stderr]    Compiling async-lock v2.1.3
[INFO] [stderr]    Compiling futures-lite v1.7.0
[INFO] [stderr]    Compiling nb-connect v1.0.0
[INFO] [stderr]    Compiling polling v1.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.2.1
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling blocking v1.0.0
[INFO] [stderr]    Compiling async-io v1.1.2
[INFO] [stderr]    Compiling async-executor v1.1.1
[INFO] [stderr]    Compiling async-fs v1.3.0
[INFO] [stderr]    Compiling async-process v1.0.0
[INFO] [stderr]    Compiling async-net v1.3.0
[INFO] [stderr]    Compiling smol v1.0.1
[INFO] [stderr]    Compiling async-task v4.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 22.91s
[INFO] running `Command { std: "docker" "inspect" "bf44d2f826bdb4333a65caf2ad0b79b0d406885b12e3977eef56c061cfc0a97c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf44d2f826bdb4333a65caf2ad0b79b0d406885b12e3977eef56c061cfc0a97c", kill_on_drop: false }`
[INFO] [stdout] bf44d2f826bdb4333a65caf2ad0b79b0d406885b12e3977eef56c061cfc0a97c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] be482dd9ca3a7ec7f4cfc51e0f1d3ebe325c6490d1f9171c4b84c7ea4fdb0f8e
[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" "be482dd9ca3a7ec7f4cfc51e0f1d3ebe325c6490d1f9171c4b84c7ea4fdb0f8e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_task-d35b8ab9e706b8dc
[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] [stderr]      Running /opt/rustwide/target/debug/deps/basic-c30c93d1e4f13551
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test cancel_and_run ... ok
[INFO] [stdout] test cancel_join ... ok
[INFO] [stdout] test detach_and_run ... ok
[INFO] [stdout] test drop_and_detach ... ok
[INFO] [stdout] test detach_and_drop ... ok
[INFO] [stdout] test drop_inside_schedule ... ok
[INFO] [stdout] test run_and_cancel ... ok
[INFO] [stdout] test run_and_detach ... ok
[INFO] [stdout] test schedule ... ok
[INFO] [stdout] test waker ... ok
[INFO] [stdout] test schedule_counter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cancel-ac482358dc6f734b
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test run_and_cancel ... ok
[INFO] [stdout] test cancel_and_run ... ok
[INFO] [stdout] test cancel_during_run ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/join-40b8b99645fc8937
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test detach_and_run ... ok
[INFO] [stdout] test await_output ... ok
[INFO] [stdout] test run_and_join ... ok
[INFO] [stdout] test join_twice ... ok
[INFO] [stdout] test drop_and_join ... ok
[INFO] [stdout] test try_join_and_cancel_and_run ... ok
[INFO] [stdout] test try_join_and_run_and_cancel ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/panic-c7cdcc7d91538d9b
[INFO] [stdout] test join_and_cancel ... ok
[INFO] [stdout] test try_join_and_run_and_join ... ok
[INFO] [stdout] test join_and_run ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test try_join_and_run_and_join ... ok
[INFO] [stdout] test detach_during_run ... ok
[INFO] [stdout] test try_join_during_run ... ok
[INFO] [stdout] test run_and_join ... ok
[INFO] [stdout] test cancel_during_run ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ready-8223134be118e4fa
[INFO] [stdout] test join_during_run ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test try_join_during_run ... ok
[INFO] [stdout] test detach_during_run ... ok
[INFO] [stdout] test cancel_during_run ... ok
[INFO] [stdout] test join_during_run ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/waker_panic-cbe535de1f4b3a24
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test panic_and_poll ... ok
[INFO] [stdout] test wake_and_cancel_during_run ... ok
[INFO] [stdout] test cancel_during_run ... ok
[INFO] [stdout] test cancel_and_wake_during_run ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/waker_pending-cb9f7785fe534b19
[INFO] [stdout] test wake_during_run ... 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 7 tests
[INFO] [stdout] test cancel_last_task ... ok
[INFO] [stdout] test drop_last_waker ... ok
[INFO] [stdout] test drop_last_task ... ok
[INFO] [stdout] test cancel_during_run ... ok
[INFO] [stdout] test cancel_and_wake_during_run ... ok
[INFO] [stdout] test wake_and_cancel_during_run ... ok
[INFO] [stdout] test wake_during_run ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/waker_ready-286b550f484bf12b
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test wake_dropped ... ok
[INFO] [stdout] test wake_completed ... ok
[INFO] [stdout] test clone ... ok
[INFO] [stderr]    Doc-tests async-task
[INFO] [stdout] test wake ... ok
[INFO] [stdout] test wake_by_ref ... 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 13 tests
[INFO] [stdout] test src/lib.rs - (line 46) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::Runnable::schedule (line 253) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::spawn (line 32) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::spawn_local (line 63) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::spawn_unchecked (line 161) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::Runnable::waker (line 316) ... ok
[INFO] [stdout] test src/task.rs - task::Task<T>::detach (line 70) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::Runnable::run (line 292) ... ok
[INFO] [stdout] test src/task.rs - task::Task (line 28) ... ok
[INFO] [stdout] test src/runnable.rs - runnable::Runnable (line 209) ... ok
[INFO] [stdout] test src/task.rs - task::Task<T>::cancel (line 101) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "be482dd9ca3a7ec7f4cfc51e0f1d3ebe325c6490d1f9171c4b84c7ea4fdb0f8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be482dd9ca3a7ec7f4cfc51e0f1d3ebe325c6490d1f9171c4b84c7ea4fdb0f8e", kill_on_drop: false }`
[INFO] [stdout] be482dd9ca3a7ec7f4cfc51e0f1d3ebe325c6490d1f9171c4b84c7ea4fdb0f8e