[INFO] fetching crate ruspiro-mmio-register 0.1.3...
[INFO] testing ruspiro-mmio-register-0.1.3 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ruspiro-mmio-register 0.1.3 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate ruspiro-mmio-register 0.1.3 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-mmio-register 0.1.3
[INFO] finished tweaking crates.io crate ruspiro-mmio-register 0.1.3
[INFO] tweaked toml for crates.io crate ruspiro-mmio-register 0.1.3 written to /workspace/builds/worker-15/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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] eab0b21e9f491105c9723848223e1ffec1a9b4a03b5d71988ff229795dbb64a7
[INFO] running `Command { std: "docker" "start" "-a" "eab0b21e9f491105c9723848223e1ffec1a9b4a03b5d71988ff229795dbb64a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eab0b21e9f491105c9723848223e1ffec1a9b4a03b5d71988ff229795dbb64a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eab0b21e9f491105c9723848223e1ffec1a9b4a03b5d71988ff229795dbb64a7", kill_on_drop: false }`
[INFO] [stdout] eab0b21e9f491105c9723848223e1ffec1a9b4a03b5d71988ff229795dbb64a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] a8f5c3a91acc2636ec5683cc57333394efd2df27638e46e70a9decc13cc2c958
[INFO] running `Command { std: "docker" "start" "-a" "a8f5c3a91acc2636ec5683cc57333394efd2df27638e46e70a9decc13cc2c958", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspiro-register v0.5.4
[INFO] [stderr]    Compiling ruspiro-mmio-register v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "a8f5c3a91acc2636ec5683cc57333394efd2df27638e46e70a9decc13cc2c958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8f5c3a91acc2636ec5683cc57333394efd2df27638e46e70a9decc13cc2c958", kill_on_drop: false }`
[INFO] [stdout] a8f5c3a91acc2636ec5683cc57333394efd2df27638e46e70a9decc13cc2c958
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faa34797b7d2c659d19da3182c8ca4b040485db0c86db872ac569213a05c601b
[INFO] running `Command { std: "docker" "start" "-a" "faa34797b7d2c659d19da3182c8ca4b040485db0c86db872ac569213a05c601b", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspiro-mmio-register v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![cfg_attr(test, feature(const_raw_ptr_to_usize_cast))]
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: at compile-time, pointers do not have an integer value, so these casts cannot be properly supported
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![cfg_attr(test, feature(const_raw_ptr_to_usize_cast))]
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruspiro-mmio-register` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "faa34797b7d2c659d19da3182c8ca4b040485db0c86db872ac569213a05c601b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faa34797b7d2c659d19da3182c8ca4b040485db0c86db872ac569213a05c601b", kill_on_drop: false }`
[INFO] [stdout] faa34797b7d2c659d19da3182c8ca4b040485db0c86db872ac569213a05c601b