[INFO] fetching crate neutron-star-rt 0.2.1...
[INFO] testing neutron-star-rt-0.2.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate neutron-star-rt 0.2.1 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate neutron-star-rt 0.2.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-27/source/.cargo/config
[INFO] started tweaking crates.io crate neutron-star-rt 0.2.1
[INFO] finished tweaking crates.io crate neutron-star-rt 0.2.1
[INFO] tweaked toml for crates.io crate neutron-star-rt 0.2.1 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afc02e2ac96ce68e558563ac6f5a12def46b81cb41ab7c991992c3159a3b2a1f
[INFO] running `Command { std: "docker" "start" "-a" "afc02e2ac96ce68e558563ac6f5a12def46b81cb41ab7c991992c3159a3b2a1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afc02e2ac96ce68e558563ac6f5a12def46b81cb41ab7c991992c3159a3b2a1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afc02e2ac96ce68e558563ac6f5a12def46b81cb41ab7c991992c3159a3b2a1f", kill_on_drop: false }`
[INFO] [stdout] afc02e2ac96ce68e558563ac6f5a12def46b81cb41ab7c991992c3159a3b2a1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb2169a5c502d704b2fbcebbf3b96fcca1c2fd3b37d6bb25361a3ebe1cae0013
[INFO] running `Command { std: "docker" "start" "-a" "bb2169a5c502d704b2fbcebbf3b96fcca1c2fd3b37d6bb25361a3ebe1cae0013", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling neutron-star-rt v0.2.1 (/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(lang_items, start)]
[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 `neutron-star-rt` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bb2169a5c502d704b2fbcebbf3b96fcca1c2fd3b37d6bb25361a3ebe1cae0013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb2169a5c502d704b2fbcebbf3b96fcca1c2fd3b37d6bb25361a3ebe1cae0013", kill_on_drop: false }`
[INFO] [stdout] bb2169a5c502d704b2fbcebbf3b96fcca1c2fd3b37d6bb25361a3ebe1cae0013