[INFO] fetching crate lockless 0.2.0...
[INFO] building lockless-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate lockless 0.2.0 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate lockless 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lockless 0.2.0
[INFO] finished tweaking crates.io crate lockless 0.2.0
[INFO] tweaked toml for crates.io crate lockless 0.2.0 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a6a36de22eced185fc30652ea758a7c493f5d43ff4b344ac4ff3ef3e78105e0
[INFO] running `Command { std: "docker" "start" "-a" "2a6a36de22eced185fc30652ea758a7c493f5d43ff4b344ac4ff3ef3e78105e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a6a36de22eced185fc30652ea758a7c493f5d43ff4b344ac4ff3ef3e78105e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a6a36de22eced185fc30652ea758a7c493f5d43ff4b344ac4ff3ef3e78105e0", kill_on_drop: false }`
[INFO] [stdout] 2a6a36de22eced185fc30652ea758a7c493f5d43ff4b344ac4ff3ef3e78105e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab1facf65b0f8a75dc4b7baddfdef9a66ff9b5ccdd5a999e9fcc56424083baee
[INFO] running `Command { std: "docker" "start" "-a" "ab1facf65b0f8a75dc4b7baddfdef9a66ff9b5ccdd5a999e9fcc56424083baee", kill_on_drop: false }`
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling owning_ref v0.2.4
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling smallvec v0.6.14
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.3.8
[INFO] [stderr]    Compiling lockless v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `futures::task::park`: renamed to `current`
[INFO] [stdout]    --> src/sync/mpsc_queue.rs:143:51
[INFO] [stdout]     |
[INFO] [stdout] 143 |         self.tasks.swap(id.into(), id, Some(task::park())).is_some()
[INFO] [stdout]     |                                                   ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `futures::task::Task::unpark`: renamed to `notify`
[INFO] [stdout]    --> src/sync/mpsc_queue.rs:137:18
[INFO] [stdout]     |
[INFO] [stdout] 137 |             task.unpark();
[INFO] [stdout]     |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lockless` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ab1facf65b0f8a75dc4b7baddfdef9a66ff9b5ccdd5a999e9fcc56424083baee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab1facf65b0f8a75dc4b7baddfdef9a66ff9b5ccdd5a999e9fcc56424083baee", kill_on_drop: false }`
[INFO] [stdout] ab1facf65b0f8a75dc4b7baddfdef9a66ff9b5ccdd5a999e9fcc56424083baee