Sep 10 09:03:55.544 INFO checking stm32f0xx-0.3.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 09:03:55.544 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 09:03:55.544 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 09:03:55.743 INFO blam! 9cf9057319bcb4fe3cb16dec7f2883f6883f52f5f0617dfaf5a3880d3a07b510
Sep 10 09:03:55.746 INFO running `"docker" "start" "-a" "9cf9057319bcb4fe3cb16dec7f2883f6883f52f5f0617dfaf5a3880d3a07b510"`
Sep 10 09:03:57.593 INFO kablam! usermod: no changes
Sep 10 09:03:57.734 INFO kablam!    Compiling cortex-m v0.2.12
Sep 10 09:03:57.734 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 10 09:03:59.342 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 10 09:03:59.342 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 10 09:03:59.342 INFO kablam!    |
Sep 10 09:03:59.342 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 10 09:03:59.342 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 10 09:03:59.342 INFO kablam! 
Sep 10 09:03:59.362 INFO kablam! error: aborting due to previous error
Sep 10 09:03:59.362 INFO kablam! 
Sep 10 09:03:59.362 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 09:03:59.362 INFO kablam! error: Could not compile `cortex-m`.
Sep 10 09:03:59.362 INFO kablam! 
Sep 10 09:03:59.362 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 09:03:59.363 INFO kablam! su: No module specific data is present
Sep 10 09:04:01.073 INFO running `"docker" "rm" "-f" "9cf9057319bcb4fe3cb16dec7f2883f6883f52f5f0617dfaf5a3880d3a07b510"`
Sep 10 09:04:01.202 INFO blam! 9cf9057319bcb4fe3cb16dec7f2883f6883f52f5f0617dfaf5a3880d3a07b510