[INFO] fetching crate apis 0.4.5...
[INFO] checking apis-0.4.5 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate apis 0.4.5 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate apis 0.4.5 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate apis 0.4.5
[INFO] finished tweaking crates.io crate apis 0.4.5
[INFO] tweaked toml for crates.io crate apis 0.4.5 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate apis 0.4.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unbounded-spsc v0.1.6
[INFO] [stderr]   Downloaded variant_count v1.0.0
[INFO] [stderr]   Downloaded winit v0.23.0
[INFO] [stderr]   Downloaded wayland-commons v0.28.1
[INFO] [stderr]   Downloaded wayland-cursor v0.28.1
[INFO] [stderr]   Downloaded wayland-sys v0.28.1
[INFO] [stderr]   Downloaded wayland-egl v0.28.1
[INFO] [stderr]   Downloaded wayland-scanner v0.28.1
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded core-graphics v0.22.1
[INFO] [stderr]   Downloaded wayland-client v0.28.1
[INFO] [stderr]   Downloaded glium v0.28.0
[INFO] [stderr]   Downloaded wayland-protocols v0.28.1
[INFO] [stderr]   Downloaded unwrap v1.2.1
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[INFO] [stderr]   Downloaded enum-unitary v0.4.2
[INFO] [stderr]   Downloaded bounded-spsc-queue v0.4.0
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.12.0
[INFO] [stderr]   Downloaded glutin v0.25.1
[INFO] [stderr]   Downloaded macro-machines v0.10.1
[INFO] [stderr]   Downloaded marksman_escape v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e04dd5d6698e04ac7dd77834243c8c61e97e521c5db817c073b7c41682021cfd
[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" "e04dd5d6698e04ac7dd77834243c8c61e97e521c5db817c073b7c41682021cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e04dd5d6698e04ac7dd77834243c8c61e97e521c5db817c073b7c41682021cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e04dd5d6698e04ac7dd77834243c8c61e97e521c5db817c073b7c41682021cfd", kill_on_drop: false }`
[INFO] [stdout] e04dd5d6698e04ac7dd77834243c8c61e97e521c5db817c073b7c41682021cfd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--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] b955062e8bb10743491809d459832d3ecc21c29b0d64547e257855c7316a549a
[INFO] running `Command { std: "docker" "start" "-a" "b955062e8bb10743491809d459832d3ecc21c29b0d64547e257855c7316a549a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling winit v0.23.0
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking marksman_escape v0.1.2
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking bounded-spsc-queue v0.4.0
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bounded-spsc-queue-0.4.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]     Checking takeable-option v0.5.0
[INFO] [stderr] error: could not compile `bounded-spsc-queue` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b955062e8bb10743491809d459832d3ecc21c29b0d64547e257855c7316a549a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b955062e8bb10743491809d459832d3ecc21c29b0d64547e257855c7316a549a", kill_on_drop: false }`
[INFO] [stdout] b955062e8bb10743491809d459832d3ecc21c29b0d64547e257855c7316a549a
