Sep 17 15:58:37.501 INFO checking tm4c123x-0.4.0 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 17 15:58:37.501 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 17 15:58:37.501 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-3/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 15:58:37.944 INFO blam! b1c8339f830ebf3e9314f9def642f3dd2baf2f4d8d83e5a4ba9ee0e6e851118b
Sep 17 15:58:37.946 INFO running `"docker" "start" "-a" "b1c8339f830ebf3e9314f9def642f3dd2baf2f4d8d83e5a4ba9ee0e6e851118b"`
Sep 17 15:58:40.050 INFO kablam! usermod: no changes
Sep 17 15:58:40.139 INFO kablam!    Compiling cortex-m v0.2.12
Sep 17 15:58:40.139 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 17 15:58:40.139 INFO kablam!     Checking aligned v0.1.2
Sep 17 15:58:42.495 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 17 15:58:42.496 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 17 15:58:42.496 INFO kablam!    |
Sep 17 15:58:42.497 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 17 15:58:42.497 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 17 15:58:42.497 INFO kablam! 
Sep 17 15:58:42.509 INFO kablam! error: aborting due to previous error
Sep 17 15:58:42.509 INFO kablam! 
Sep 17 15:58:42.510 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 17 15:58:42.518 INFO kablam! error: Could not compile `cortex-m`.
Sep 17 15:58:42.518 INFO kablam! 
Sep 17 15:58:42.518 INFO kablam! To learn more, run the command again with --verbose.
Sep 17 15:58:42.520 INFO kablam! su: No module specific data is present
Sep 17 15:58:44.059 INFO running `"docker" "rm" "-f" "b1c8339f830ebf3e9314f9def642f3dd2baf2f4d8d83e5a4ba9ee0e6e851118b"`
Sep 17 15:58:44.399 INFO blam! b1c8339f830ebf3e9314f9def642f3dd2baf2f4d8d83e5a4ba9ee0e6e851118b