Dec 14 11:56:05.956 INFO testing BenBergman/dome-rs against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 11:56:05.956 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 11:56:06.501 INFO [stdout] c0d2f96ff0b386d418944889d38ef509fb3be3162c155d4f6de63907a9fc7355
Dec 14 11:56:06.503 INFO running `"docker" "start" "-a" "c0d2f96ff0b386d418944889d38ef509fb3be3162c155d4f6de63907a9fc7355"`
Dec 14 11:56:07.871 INFO [stderr] usermod: no changes
Dec 14 11:56:08.031 INFO [stderr]    Compiling rand_core v0.3.0
Dec 14 11:56:08.031 INFO [stderr]    Compiling cortex-m-rt v0.6.5
Dec 14 11:56:08.031 INFO [stderr]    Compiling atsamd21g18a v0.3.1
Dec 14 11:56:08.035 INFO [stderr]    Compiling nb v0.1.1
Dec 14 11:56:08.035 INFO [stderr]    Compiling itsybitsy_m0 v0.1.0
Dec 14 11:56:08.035 INFO [stderr]    Compiling bitfield v0.13.1
Dec 14 11:56:08.035 INFO [stderr]    Compiling panic-abort v0.2.0
Dec 14 11:56:08.039 INFO [stderr]    Compiling syn v0.15.21
Dec 14 11:56:08.487 INFO [stderr] error[E0557]: feature has been removed
Dec 14 11:56:08.487 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:22:12
Dec 14 11:56:08.487 INFO [stderr]    |
Dec 14 11:56:08.488 INFO [stderr] 22 | #![feature(panic_implementation)]
Dec 14 11:56:08.488 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
Dec 14 11:56:08.488 INFO [stderr]    |
Dec 14 11:56:08.488 INFO [stderr] note: subsumed by `#[panic_handler]`
Dec 14 11:56:08.489 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:22:12
Dec 14 11:56:08.489 INFO [stderr]    |
Dec 14 11:56:08.489 INFO [stderr] 22 | #![feature(panic_implementation)]
Dec 14 11:56:08.489 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
Dec 14 11:56:08.489 INFO [stderr] 
Dec 14 11:56:08.935 INFO [stderr] error[E0658]: The attribute `panic_implementation` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Dec 14 11:56:08.935 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:28:3
Dec 14 11:56:08.935 INFO [stderr]    |
Dec 14 11:56:08.935 INFO [stderr] 28 | #[panic_implementation]
Dec 14 11:56:08.935 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 14 11:56:08.935 INFO [stderr]    |
Dec 14 11:56:08.938 INFO [stderr]    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Dec 14 11:56:08.938 INFO [stderr] 
Dec 14 11:56:08.938 INFO [stderr] error: aborting due to 2 previous errors
Dec 14 11:56:08.938 INFO [stderr] 
Dec 14 11:56:08.938 INFO [stderr] Some errors occurred: E0557, E0658.
Dec 14 11:56:08.938 INFO [stderr] For more information about an error, try `rustc --explain E0557`.
Dec 14 11:56:08.959 INFO [stderr] error: Could not compile `panic-abort`.
Dec 14 11:56:08.959 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 14 11:56:26.451 INFO [stderr] error: build failed
Dec 14 11:56:26.455 INFO [stderr] su: No module specific data is present
Dec 14 11:56:27.212 INFO running `"docker" "inspect" "c0d2f96ff0b386d418944889d38ef509fb3be3162c155d4f6de63907a9fc7355"`
Dec 14 11:56:27.613 INFO running `"docker" "rm" "-f" "c0d2f96ff0b386d418944889d38ef509fb3be3162c155d4f6de63907a9fc7355"`
Dec 14 11:56:27.918 INFO [stdout] c0d2f96ff0b386d418944889d38ef509fb3be3162c155d4f6de63907a9fc7355