Sep 01 05:28:22.474 INFO checking stm32f100xx-0.4.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 05:28:22.474 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 05:28:22.474 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 05:28:22.650 INFO blam! f6b6ffe5feb77c3ccc1551dda21185c5c4dcd2ede6e180a749a8df99e1237c10
Sep 01 05:28:22.652 INFO running `"docker" "start" "-a" "f6b6ffe5feb77c3ccc1551dda21185c5c4dcd2ede6e180a749a8df99e1237c10"`
Sep 01 05:28:23.279 INFO kablam!     Checking cortex-m v0.2.12
Sep 01 05:28:23.754 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 01 05:28:23.754 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 01 05:28:23.754 INFO kablam!    |
Sep 01 05:28:23.754 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 01 05:28:23.754 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 01 05:28:23.754 INFO kablam! 
Sep 01 05:28:23.772 INFO kablam! error: aborting due to previous error
Sep 01 05:28:23.772 INFO kablam! 
Sep 01 05:28:23.772 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 05:28:23.778 INFO kablam! error: Could not compile `cortex-m`.
Sep 01 05:28:23.778 INFO kablam! 
Sep 01 05:28:23.778 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 05:28:23.780 INFO kablam! su: No module specific data is present
Sep 01 05:28:24.297 INFO running `"docker" "rm" "-f" "f6b6ffe5feb77c3ccc1551dda21185c5c4dcd2ede6e180a749a8df99e1237c10"`
Sep 01 05:28:24.433 INFO blam! f6b6ffe5feb77c3ccc1551dda21185c5c4dcd2ede6e180a749a8df99e1237c10