[INFO] fetching crate futures-cputask 0.3.0...
[INFO] testing futures-cputask-0.3.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate futures-cputask 0.3.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate futures-cputask 0.3.0 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 futures-cputask 0.3.0
[INFO] finished tweaking crates.io crate futures-cputask 0.3.0
[INFO] tweaked toml for crates.io crate futures-cputask 0.3.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-cputask-derive v0.3.0
[INFO] [stderr]   Downloaded uvth v4.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a47d8720ba45da68120d534af408b13bd0a366de7167ef34deed91a545e5eb8
[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" "2a47d8720ba45da68120d534af408b13bd0a366de7167ef34deed91a545e5eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a47d8720ba45da68120d534af408b13bd0a366de7167ef34deed91a545e5eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a47d8720ba45da68120d534af408b13bd0a366de7167ef34deed91a545e5eb8", kill_on_drop: false }`
[INFO] [stdout] 2a47d8720ba45da68120d534af408b13bd0a366de7167ef34deed91a545e5eb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f67205d5eb865d931f8d5981180bd6f53bbd8a2630336c15c81810a266378ad0
[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" "f67205d5eb865d931f8d5981180bd6f53bbd8a2630336c15c81810a266378ad0", kill_on_drop: false }`
[INFO] [stderr]    Compiling uvth v4.0.1
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling futures-cputask v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.19s
[INFO] running `Command { std: "docker" "inspect" "f67205d5eb865d931f8d5981180bd6f53bbd8a2630336c15c81810a266378ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f67205d5eb865d931f8d5981180bd6f53bbd8a2630336c15c81810a266378ad0", kill_on_drop: false }`
[INFO] [stdout] f67205d5eb865d931f8d5981180bd6f53bbd8a2630336c15c81810a266378ad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64dfbec07bd3cfc44174a0047e3008323c1c99138d21f88d673c6e0a98577273
[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" "64dfbec07bd3cfc44174a0047e3008323c1c99138d21f88d673c6e0a98577273", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-cputask v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `futures_cputask::async_task`
[INFO] [stdout]  --> tests/pool-test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures_cputask::async_task;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `async_task` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `async_task`
[INFO] [stdout]  --> tests/pool-test.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[async_task]
[INFO] [stdout]   |   ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FutureObj`, `Spawn`
[INFO] [stdout]  --> tests/pool-test.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::task::{FutureObj, Spawn};
[INFO] [stdout]   |                     ^^^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `i64` is not a future
[INFO] [stdout]   --> tests/pool-test.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     assert_eq!(long_running_task().await, 4_999_999_950_000_000);
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^ `i64` is not a future
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `futures::Future` is not implemented for `i64`
[INFO] [stdout]    = note: required by `futures::Future::poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-cputask`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "64dfbec07bd3cfc44174a0047e3008323c1c99138d21f88d673c6e0a98577273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64dfbec07bd3cfc44174a0047e3008323c1c99138d21f88d673c6e0a98577273", kill_on_drop: false }`
[INFO] [stdout] 64dfbec07bd3cfc44174a0047e3008323c1c99138d21f88d673c6e0a98577273