[INFO] fetching crate unbounded-spsc 0.1.6...
[INFO] checking unbounded-spsc-0.1.6 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate unbounded-spsc 0.1.6 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate unbounded-spsc 0.1.6 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 unbounded-spsc 0.1.6
[INFO] finished tweaking crates.io crate unbounded-spsc 0.1.6
[INFO] tweaked toml for crates.io crate unbounded-spsc 0.1.6 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate unbounded-spsc 0.1.6 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 93877a99824c3715aaecece9b3fe9cfc77d522f2e48a49754e023184744555c6
[INFO] running `Command { std: "docker" "start" "-a" "93877a99824c3715aaecece9b3fe9cfc77d522f2e48a49754e023184744555c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93877a99824c3715aaecece9b3fe9cfc77d522f2e48a49754e023184744555c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93877a99824c3715aaecece9b3fe9cfc77d522f2e48a49754e023184744555c6", kill_on_drop: false }`
[INFO] [stdout] 93877a99824c3715aaecece9b3fe9cfc77d522f2e48a49754e023184744555c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] 00c7204043c207a1528e2b1d0497ed5ee77b3fac22d765a775b84bc08a81ae34
[INFO] running `Command { std: "docker" "start" "-a" "00c7204043c207a1528e2b1d0497ed5ee77b3fac22d765a775b84bc08a81ae34", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking bounded-spsc-queue v0.4.0
[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] error: could not compile `bounded-spsc-queue` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "00c7204043c207a1528e2b1d0497ed5ee77b3fac22d765a775b84bc08a81ae34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00c7204043c207a1528e2b1d0497ed5ee77b3fac22d765a775b84bc08a81ae34", kill_on_drop: false }`
[INFO] [stdout] 00c7204043c207a1528e2b1d0497ed5ee77b3fac22d765a775b84bc08a81ae34
