[INFO] cloning repository https://github.com/TauSigma5/os-from-scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TauSigma5/os-from-scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTauSigma5%2Fos-from-scratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTauSigma5%2Fos-from-scratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52ea4d6747f7aede248cf598f643c5854bb576c8
[INFO] testing TauSigma5/os-from-scratch against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTauSigma5%2Fos-from-scratch" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TauSigma5/os-from-scratch 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 git repo https://github.com/TauSigma5/os-from-scratch
[INFO] finished tweaking git repo https://github.com/TauSigma5/os-from-scratch
[INFO] tweaked toml for git repo https://github.com/TauSigma5/os-from-scratch written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/TauSigma5/os-from-scratch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bootloader v0.9.14
[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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cac8bca2f5b5876982b071908e8ce8c99abae1e2785734d2646814f977589ee1
[INFO] running `Command { std: "docker" "start" "-a" "cac8bca2f5b5876982b071908e8ce8c99abae1e2785734d2646814f977589ee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac8bca2f5b5876982b071908e8ce8c99abae1e2785734d2646814f977589ee1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac8bca2f5b5876982b071908e8ce8c99abae1e2785734d2646814f977589ee1", kill_on_drop: false }`
[INFO] [stdout] cac8bca2f5b5876982b071908e8ce8c99abae1e2785734d2646814f977589ee1
[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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a39ba4a7034b7929b8d050b162c75191a3f13d72f8c175c821f79f6e130674d
[INFO] running `Command { std: "docker" "start" "-a" "4a39ba4a7034b7929b8d050b162c75191a3f13d72f8c175c821f79f6e130674d", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.14
[INFO] [stderr]    Compiling rust-os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-os` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4a39ba4a7034b7929b8d050b162c75191a3f13d72f8c175c821f79f6e130674d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a39ba4a7034b7929b8d050b162c75191a3f13d72f8c175c821f79f6e130674d", kill_on_drop: false }`
[INFO] [stdout] 4a39ba4a7034b7929b8d050b162c75191a3f13d72f8c175c821f79f6e130674d