Aug 11 00:59:38.749 INFO checking stm32f303x-memory-map-0.1.1 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 00:59:38.749 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 00:59:38.749 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 00:59:38.750 INFO running `"docker" "create" "-v" "/tmp/crater.kcZNRKlQRnwY:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-1/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 00:59:39.074 INFO blam! ff621301289f5b30b6edaf4349129d61f2387fe75094e5486c61bb6489eec15b
Aug 11 00:59:39.077 INFO running `"docker" "start" "-a" "ff621301289f5b30b6edaf4349129d61f2387fe75094e5486c61bb6489eec15b"`
Aug 11 00:59:40.046 INFO kablam!     Checking cortex-m v0.2.12
Aug 11 00:59:40.865 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 00:59:40.865 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Aug 11 00:59:40.865 INFO kablam!    |
Aug 11 00:59:40.865 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Aug 11 00:59:40.865 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Aug 11 00:59:40.865 INFO kablam! 
Aug 11 00:59:40.892 INFO kablam! error: aborting due to previous error
Aug 11 00:59:40.893 INFO kablam! 
Aug 11 00:59:40.893 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 00:59:40.903 INFO kablam! error: Could not compile `cortex-m`.
Aug 11 00:59:40.903 INFO kablam! 
Aug 11 00:59:40.903 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 00:59:40.905 INFO kablam! su: No module specific data is present
Aug 11 00:59:41.599 INFO running `"docker" "rm" "-f" "ff621301289f5b30b6edaf4349129d61f2387fe75094e5486c61bb6489eec15b"`
Aug 11 00:59:41.810 INFO blam! ff621301289f5b30b6edaf4349129d61f2387fe75094e5486c61bb6489eec15b