Aug 30 00:02:14.927 INFO checking tm4c123x-0.4.0 against master#545f22340f72ee0efaf6463efb43a2840e3d35db for pr-53699
Aug 30 00:02:14.927 INFO running: cargo +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets
Aug 30 00:02:14.927 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53699/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-2/master#545f22340f72ee0efaf6463efb43a2840e3d35db:/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 +545f22340f72ee0efaf6463efb43a2840e3d35db-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 00:02:15.110 INFO blam! 5c8a2b1106486210c7a995d27e960e03aeac71c3ce105d682f844a7a38c2dd10
Aug 30 00:02:15.113 INFO running `"docker" "start" "-a" "5c8a2b1106486210c7a995d27e960e03aeac71c3ce105d682f844a7a38c2dd10"`
Aug 30 00:02:15.733 INFO kablam!    Compiling cortex-m v0.2.12
Aug 30 00:02:15.733 INFO kablam!     Checking vcell v0.1.0
Aug 30 00:02:15.733 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Aug 30 00:02:15.733 INFO kablam!     Checking aligned v0.1.2
Aug 30 00:02:15.935 INFO kablam!     Checking volatile-register v0.2.0
Aug 30 00:02:17.164 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 30 00:02:17.164 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Aug 30 00:02:17.164 INFO kablam!    |
Aug 30 00:02:17.164 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Aug 30 00:02:17.164 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Aug 30 00:02:17.164 INFO kablam! 
Aug 30 00:02:17.180 INFO kablam! error: aborting due to previous error
Aug 30 00:02:17.180 INFO kablam! 
Aug 30 00:02:17.181 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 30 00:02:17.187 INFO kablam! error: Could not compile `cortex-m`.
Aug 30 00:02:17.187 INFO kablam! 
Aug 30 00:02:17.187 INFO kablam! To learn more, run the command again with --verbose.
Aug 30 00:02:17.189 INFO kablam! su: No module specific data is present
Aug 30 00:02:17.621 INFO running `"docker" "rm" "-f" "5c8a2b1106486210c7a995d27e960e03aeac71c3ce105d682f844a7a38c2dd10"`
Aug 30 00:02:17.756 INFO blam! 5c8a2b1106486210c7a995d27e960e03aeac71c3ce105d682f844a7a38c2dd10