[INFO] cloning repository https://github.com/EssexComputerSociety/brookix-kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EssexComputerSociety/brookix-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEssexComputerSociety%2Fbrookix-kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEssexComputerSociety%2Fbrookix-kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae2eff18ad31d9c429ad20dd3c0be3d25b6a3fb8
[INFO] testing EssexComputerSociety/brookix-kernel against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEssexComputerSociety%2Fbrookix-kernel" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EssexComputerSociety/brookix-kernel on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EssexComputerSociety/brookix-kernel
[INFO] finished tweaking git repo https://github.com/EssexComputerSociety/brookix-kernel
[INFO] tweaked toml for git repo https://github.com/EssexComputerSociety/brookix-kernel written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/EssexComputerSociety/brookix-kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b56e6cd1f6c4ae885d0e2f47fe780fe51609e11eff44294ad3b1a5a7c6711c9
[INFO] running `Command { std: "docker" "start" "-a" "3b56e6cd1f6c4ae885d0e2f47fe780fe51609e11eff44294ad3b1a5a7c6711c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b56e6cd1f6c4ae885d0e2f47fe780fe51609e11eff44294ad3b1a5a7c6711c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b56e6cd1f6c4ae885d0e2f47fe780fe51609e11eff44294ad3b1a5a7c6711c9", kill_on_drop: false }`
[INFO] [stdout] 3b56e6cd1f6c4ae885d0e2f47fe780fe51609e11eff44294ad3b1a5a7c6711c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82fa61e8771ae5bda4dbeb6dda28259c6a322fbfccf364c45205d92b763aa104
[INFO] running `Command { std: "docker" "start" "-a" "82fa61e8771ae5bda4dbeb6dda28259c6a322fbfccf364c45205d92b763aa104", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlibc v1.0.0
[INFO] [stderr]    Compiling ecs_kernel v0.1.0 (/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)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_fmt`
[INFO] [stdout]   --> src/lib.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 | #[lang = "panic_fmt"] #[no_mangle] pub extern fn panic_fmt() -> ! {loop{}}
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `ecs_kernel` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/beta-2022-04-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-88c4d85fe493b0a6.rlib
[INFO] [stdout]    = note: second definition in the local crate (`ecs_kernel`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0152, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ecs_kernel` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "82fa61e8771ae5bda4dbeb6dda28259c6a322fbfccf364c45205d92b763aa104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82fa61e8771ae5bda4dbeb6dda28259c6a322fbfccf364c45205d92b763aa104", kill_on_drop: false }`
[INFO] [stdout] 82fa61e8771ae5bda4dbeb6dda28259c6a322fbfccf364c45205d92b763aa104