[INFO] cloning repository https://github.com/ashleygwilliams/x86-kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ashleygwilliams/x86-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashleygwilliams%2Fx86-kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashleygwilliams%2Fx86-kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4f53e367f637a919efd945bcd20920c98d3ad43
[INFO] testing ashleygwilliams/x86-kernel against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashleygwilliams%2Fx86-kernel" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ashleygwilliams/x86-kernel 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] started tweaking git repo https://github.com/ashleygwilliams/x86-kernel
[INFO] finished tweaking git repo https://github.com/ashleygwilliams/x86-kernel
[INFO] tweaked toml for git repo https://github.com/ashleygwilliams/x86-kernel written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ashleygwilliams/x86-kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] e0fb264f1a1ed2b9b18106cd3ff8224e046880cde75ad757b0dc309828db402d
[INFO] running `Command { std: "docker" "start" "-a" "e0fb264f1a1ed2b9b18106cd3ff8224e046880cde75ad757b0dc309828db402d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0fb264f1a1ed2b9b18106cd3ff8224e046880cde75ad757b0dc309828db402d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0fb264f1a1ed2b9b18106cd3ff8224e046880cde75ad757b0dc309828db402d", kill_on_drop: false }`
[INFO] [stdout] e0fb264f1a1ed2b9b18106cd3ff8224e046880cde75ad757b0dc309828db402d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 1228c8dfdc2ce4a4c4e21e5d16c9ac96a8473cf4fbc1ddda2f3394eddfde56e1
[INFO] running `Command { std: "docker" "start" "-a" "1228c8dfdc2ce4a4c4e21e5d16c9ac96a8473cf4fbc1ddda2f3394eddfde56e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlibc v0.1.4
[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/rlibc-0.1.4/src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(no_std)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `no_std` has been stable since 1.6.0 and no longer requires an attribute to enable
[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 `rlibc` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1228c8dfdc2ce4a4c4e21e5d16c9ac96a8473cf4fbc1ddda2f3394eddfde56e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1228c8dfdc2ce4a4c4e21e5d16c9ac96a8473cf4fbc1ddda2f3394eddfde56e1", kill_on_drop: false }`
[INFO] [stdout] 1228c8dfdc2ce4a4c4e21e5d16c9ac96a8473cf4fbc1ddda2f3394eddfde56e1