Dec 12 12:39:52.200 INFO checking itsybitsy_m0-0.1.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 12:39:52.200 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-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 12 12:39:52.384 INFO [stdout] 55449e265f645e4f8a1db63e46bc6c74ffd269b7d93df4419d45111237413bda
Dec 12 12:39:52.386 INFO running `"docker" "start" "-a" "55449e265f645e4f8a1db63e46bc6c74ffd269b7d93df4419d45111237413bda"`
Dec 12 12:39:53.055 INFO [stderr] usermod: no changes
Dec 12 12:39:53.208 INFO [stderr]    Compiling atsamd21g18a v0.3.1
Dec 12 12:39:53.212 INFO [stderr]    Compiling itsybitsy_m0 v0.1.0 (/source)
Dec 12 12:39:53.225 INFO [stderr]     Checking panic-abort v0.2.0
Dec 12 12:39:53.226 INFO [stderr]     Checking ssd1306 v0.2.1
Dec 12 12:39:53.515 INFO [stderr] error[E0557]: feature has been removed
Dec 12 12:39:53.515 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:22:12
Dec 12 12:39:53.515 INFO [stderr]    |
Dec 12 12:39:53.515 INFO [stderr] 22 | #![feature(panic_implementation)]
Dec 12 12:39:53.515 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
Dec 12 12:39:53.515 INFO [stderr]    |
Dec 12 12:39:53.515 INFO [stderr] note: subsumed by `#[panic_handler]`
Dec 12 12:39:53.516 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:22:12
Dec 12 12:39:53.516 INFO [stderr]    |
Dec 12 12:39:53.516 INFO [stderr] 22 | #![feature(panic_implementation)]
Dec 12 12:39:53.516 INFO [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
Dec 12 12:39:53.516 INFO [stderr] 
Dec 12 12:39:53.564 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 12 12:39:53.564 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/panic-abort-0.2.0/src/lib.rs:28:3
Dec 12 12:39:53.564 INFO [stderr]    |
Dec 12 12:39:53.564 INFO [stderr] 28 | #[panic_implementation]
Dec 12 12:39:53.564 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
Dec 12 12:39:53.564 INFO [stderr]    |
Dec 12 12:39:53.564 INFO [stderr]    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Dec 12 12:39:53.564 INFO [stderr] 
Dec 12 12:39:53.564 INFO [stderr] error: aborting due to 2 previous errors
Dec 12 12:39:53.564 INFO [stderr] 
Dec 12 12:39:53.564 INFO [stderr] Some errors occurred: E0557, E0658.
Dec 12 12:39:53.564 INFO [stderr] For more information about an error, try `rustc --explain E0557`.
Dec 12 12:39:53.580 INFO [stderr] error: Could not compile `panic-abort`.
Dec 12 12:39:53.580 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 12 12:39:55.380 INFO [stderr] error: build failed
Dec 12 12:39:55.380 INFO [stderr] su: No module specific data is present
Dec 12 12:39:55.936 INFO running `"docker" "inspect" "55449e265f645e4f8a1db63e46bc6c74ffd269b7d93df4419d45111237413bda"`
Dec 12 12:39:56.113 INFO running `"docker" "rm" "-f" "55449e265f645e4f8a1db63e46bc6c74ffd269b7d93df4419d45111237413bda"`
Dec 12 12:39:56.293 INFO [stdout] 55449e265f645e4f8a1db63e46bc6c74ffd269b7d93df4419d45111237413bda