Sep 17 16:44:09.661 INFO checking stm32f0xx-0.3.0 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 16:44:09.661 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 16:44:09.661 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-1/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 16:44:09.835 INFO blam! 6f135e95fd8b62badb5af7b9f7981fe70ed8936bd6b40922ce5ead5bf719c5ac
Sep 17 16:44:09.837 INFO running `"docker" "start" "-a" "6f135e95fd8b62badb5af7b9f7981fe70ed8936bd6b40922ce5ead5bf719c5ac"`
Sep 17 16:44:10.712 INFO kablam! usermod: no changes
Sep 17 16:44:10.752 INFO kablam!    Compiling cortex-m v0.2.12
Sep 17 16:44:10.752 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 17 16:44:11.575 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 17 16:44:11.575 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 17 16:44:11.575 INFO kablam!    |
Sep 17 16:44:11.575 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 17 16:44:11.575 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 17 16:44:11.575 INFO kablam! 
Sep 17 16:44:11.591 INFO kablam! error: aborting due to previous error
Sep 17 16:44:11.591 INFO kablam! 
Sep 17 16:44:11.591 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 17 16:44:11.592 INFO kablam! error: Could not compile `cortex-m`.
Sep 17 16:44:11.592 INFO kablam! 
Sep 17 16:44:11.592 INFO kablam! To learn more, run the command again with --verbose.
Sep 17 16:44:11.593 INFO kablam! su: No module specific data is present
Sep 17 16:44:12.483 INFO running `"docker" "rm" "-f" "6f135e95fd8b62badb5af7b9f7981fe70ed8936bd6b40922ce5ead5bf719c5ac"`
Sep 17 16:44:12.729 INFO blam! 6f135e95fd8b62badb5af7b9f7981fe70ed8936bd6b40922ce5ead5bf719c5ac