[INFO] fetching crate ruspiro-mmu 0.1.1...
[INFO] testing ruspiro-mmu-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ruspiro-mmu 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ruspiro-mmu 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruspiro-mmu 0.1.1
[INFO] finished tweaking crates.io crate ruspiro-mmu 0.1.1
[INFO] tweaked toml for crates.io crate ruspiro-mmu 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96ed972db0da9d82770ae7b52a6a7dd634c0cda0a978bca6d083a217de4cb7fe
[INFO] running `Command { std: "docker" "start" "-a" "96ed972db0da9d82770ae7b52a6a7dd634c0cda0a978bca6d083a217de4cb7fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96ed972db0da9d82770ae7b52a6a7dd634c0cda0a978bca6d083a217de4cb7fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96ed972db0da9d82770ae7b52a6a7dd634c0cda0a978bca6d083a217de4cb7fe", kill_on_drop: false }`
[INFO] [stdout] 96ed972db0da9d82770ae7b52a6a7dd634c0cda0a978bca6d083a217de4cb7fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5fe8bcf173c7c0a54f6b4809482855f9fb1652c6e155a01eed5399965c56243
[INFO] running `Command { std: "docker" "start" "-a" "d5fe8bcf173c7c0a54f6b4809482855f9fb1652c6e155a01eed5399965c56243", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspiro-mmu v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling ruspiro-register v0.5.4
[INFO] [stderr]    Compiling ruspiro-arch-aarch64 v0.1.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ruspiro-arch-aarch64-0.1.5/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(asm)]
[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 `ruspiro-arch-aarch64` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d5fe8bcf173c7c0a54f6b4809482855f9fb1652c6e155a01eed5399965c56243", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5fe8bcf173c7c0a54f6b4809482855f9fb1652c6e155a01eed5399965c56243", kill_on_drop: false }`
[INFO] [stdout] d5fe8bcf173c7c0a54f6b4809482855f9fb1652c6e155a01eed5399965c56243