Sep 04 02:02:33.221 INFO checking stm32f100xx-0.4.0 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 02:02:33.221 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 02:02:33.221 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 02:02:33.422 INFO blam! 47f72957e063499547bd17a086f66be85365cf3ca9aade06f5d58b415ed09c48
Sep 04 02:02:33.424 INFO running `"docker" "start" "-a" "47f72957e063499547bd17a086f66be85365cf3ca9aade06f5d58b415ed09c48"`
Sep 04 02:02:34.095 INFO kablam!    Compiling cortex-m v0.2.12
Sep 04 02:02:34.095 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 04 02:02:35.679 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 04 02:02:35.679 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 04 02:02:35.679 INFO kablam!    |
Sep 04 02:02:35.679 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 04 02:02:35.679 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 04 02:02:35.679 INFO kablam! 
Sep 04 02:02:35.707 INFO kablam! error: aborting due to previous error
Sep 04 02:02:35.707 INFO kablam! 
Sep 04 02:02:35.707 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 04 02:02:35.715 INFO kablam! error: Could not compile `cortex-m`.
Sep 04 02:02:35.715 INFO kablam! 
Sep 04 02:02:35.715 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 02:02:35.717 INFO kablam! su: No module specific data is present
Sep 04 02:02:36.094 INFO running `"docker" "rm" "-f" "47f72957e063499547bd17a086f66be85365cf3ca9aade06f5d58b415ed09c48"`
Sep 04 02:02:36.224 INFO blam! 47f72957e063499547bd17a086f66be85365cf3ca9aade06f5d58b415ed09c48