[INFO] cloning repository https://github.com/rust-osdev/bootloader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-osdev/bootloader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-osdev%2Fbootloader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-osdev%2Fbootloader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac46d0455b41c11e5d316348d068df1c495ce0af
[INFO] testing rust-osdev/bootloader against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-osdev%2Fbootloader" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-osdev/bootloader on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-63/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-63/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/rust-osdev/bootloader
[INFO] finished tweaking git repo https://github.com/rust-osdev/bootloader
[INFO] tweaked toml for git repo https://github.com/rust-osdev/bootloader written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-osdev/bootloader already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ucs2 v0.3.2
[INFO] [stderr]   Downloaded uart_16550 v0.2.14
[INFO] [stderr]   Downloaded rsdp v1.1.0
[INFO] [stderr]   Downloaded gpt v2.0.0
[INFO] [stderr]   Downloaded displaydoc v0.1.7
[INFO] [stderr]   Downloaded argh_derive v0.1.4
[INFO] [stderr]   Downloaded argh v0.1.4
[INFO] [stderr]   Downloaded bootloader-locator v0.0.4
[INFO] [stderr]   Downloaded zero v0.1.2
[INFO] [stderr]   Downloaded argh_shared v0.1.4
[INFO] [stderr]   Downloaded spinning_top v0.2.4
[INFO] [stderr]   Downloaded conquer-util v0.2.0
[INFO] [stderr]   Downloaded fatfs v0.3.5
[INFO] [stderr]   Downloaded uefi-macros v0.3.3
[INFO] [stderr]   Downloaded uefi v0.11.0
[INFO] [stderr]   Downloaded volatile v0.4.4
[INFO] [stderr]   Downloaded x86_64 v0.14.9
[INFO] [stderr]   Downloaded xmas-elf v0.8.0
[INFO] [stderr]   Downloaded conquer-once v0.2.1
[INFO] [stderr]   Downloaded noto-sans-mono-bitmap v0.1.2
[INFO] [stderr]   Downloaded usize_conversions v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6b1d289a21989b20039bd35fe607f79a014e79f1d9b9d91dc58454d5696e574
[INFO] running `Command { std: "docker" "start" "-a" "f6b1d289a21989b20039bd35fe607f79a014e79f1d9b9d91dc58454d5696e574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6b1d289a21989b20039bd35fe607f79a014e79f1d9b9d91dc58454d5696e574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b1d289a21989b20039bd35fe607f79a014e79f1d9b9d91dc58454d5696e574", kill_on_drop: false }`
[INFO] [stdout] f6b1d289a21989b20039bd35fe607f79a014e79f1d9b9d91dc58454d5696e574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfb90a190d51cb904a1c7d9380e2ef5026be118ed689d581135914d90eb3590e
[INFO] running `Command { std: "docker" "start" "-a" "bfb90a190d51cb904a1c7d9380e2ef5026be118ed689d581135914d90eb3590e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.10.12 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 | #![feature(maybe_uninit_slice)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 | #![feature(step_trait)]
[INFO] [stdout]    |            ^^^^^^^^^^
[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 `bootloader` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "bfb90a190d51cb904a1c7d9380e2ef5026be118ed689d581135914d90eb3590e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfb90a190d51cb904a1c7d9380e2ef5026be118ed689d581135914d90eb3590e", kill_on_drop: false }`
[INFO] [stdout] bfb90a190d51cb904a1c7d9380e2ef5026be118ed689d581135914d90eb3590e