Aug 17 16:59:31.888 INFO checking mkw41z-0.1.2 against master#142bb27373126edf8367f526358b6c72ecf1d8df for pr-53426
Aug 17 16:59:31.888 INFO running: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 17 16:59:31.888 INFO creating container for: cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets
Aug 17 16:59:31.888 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53426/master#142bb27373126edf8367f526358b6c72ecf1d8df:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53426/worker-0/master#142bb27373126edf8367f526358b6c72ecf1d8df:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +142bb27373126edf8367f526358b6c72ecf1d8df-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 17 16:59:32.226 INFO blam! 8cd0ebb09df613f1d374be7e13d4ec22e426d08f5f691947098c4254b6f9a07a
Aug 17 16:59:32.228 INFO running `"docker" "start" "-a" "8cd0ebb09df613f1d374be7e13d4ec22e426d08f5f691947098c4254b6f9a07a"`
Aug 17 16:59:33.414 INFO kablam!     Checking bare-metal v0.1.2
Aug 17 16:59:33.631 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 17 16:59:33.631 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 17 16:59:33.631 INFO kablam!   |
Aug 17 16:59:33.631 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 17 16:59:33.631 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 17 16:59:33.632 INFO kablam! 
Aug 17 16:59:33.633 INFO kablam! error: aborting due to previous error
Aug 17 16:59:33.633 INFO kablam! 
Aug 17 16:59:33.633 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 17 16:59:33.640 INFO kablam! error: Could not compile `bare-metal`.
Aug 17 16:59:33.640 INFO kablam! 
Aug 17 16:59:33.640 INFO kablam! To learn more, run the command again with --verbose.
Aug 17 16:59:33.642 INFO kablam! su: No module specific data is present
Aug 17 16:59:34.103 INFO running `"docker" "rm" "-f" "8cd0ebb09df613f1d374be7e13d4ec22e426d08f5f691947098c4254b6f9a07a"`
Aug 17 16:59:34.273 INFO blam! 8cd0ebb09df613f1d374be7e13d4ec22e426d08f5f691947098c4254b6f9a07a