Sep 21 01:44:41.649 INFO checking tm4c123x-0.4.0 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 01:44:41.649 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 01:44:41.649 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 01:44:42.002 INFO blam! 6ed8c7fbfcb3a6ef4b429ce3c73c279389f8105a55ce93afe34b76cd20a590d3
Sep 21 01:44:42.004 INFO running `"docker" "start" "-a" "6ed8c7fbfcb3a6ef4b429ce3c73c279389f8105a55ce93afe34b76cd20a590d3"`
Sep 21 01:44:43.350 INFO kablam! usermod: no changes
Sep 21 01:44:43.514 INFO kablam!    Compiling cortex-m v0.2.12
Sep 21 01:44:43.522 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 21 01:44:43.522 INFO kablam!     Checking aligned v0.1.2
Sep 21 01:44:45.086 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 21 01:44:45.087 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 21 01:44:45.087 INFO kablam!    |
Sep 21 01:44:45.087 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 21 01:44:45.087 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 21 01:44:45.087 INFO kablam! 
Sep 21 01:44:45.106 INFO kablam! error: aborting due to previous error
Sep 21 01:44:45.106 INFO kablam! 
Sep 21 01:44:45.106 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 01:44:45.110 INFO kablam! error: Could not compile `cortex-m`.
Sep 21 01:44:45.110 INFO kablam! 
Sep 21 01:44:45.110 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 01:44:45.110 INFO kablam! su: No module specific data is present
Sep 21 01:44:46.239 INFO running `"docker" "rm" "-f" "6ed8c7fbfcb3a6ef4b429ce3c73c279389f8105a55ce93afe34b76cd20a590d3"`
Sep 21 01:44:46.347 INFO blam! 6ed8c7fbfcb3a6ef4b429ce3c73c279389f8105a55ce93afe34b76cd20a590d3