Sep 04 03:48:26.631 INFO checking tm4c123x-0.4.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 03:48:26.631 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 03:48:26.631 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-3/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 03:48:26.818 INFO blam! 90d9fc242fd6086b62d70af0a79e2ad05d0c9fad0761c3eca6604643a8f46b3d
Sep 04 03:48:26.821 INFO running `"docker" "start" "-a" "90d9fc242fd6086b62d70af0a79e2ad05d0c9fad0761c3eca6604643a8f46b3d"`
Sep 04 03:48:27.484 INFO kablam!    Compiling cortex-m v0.2.12
Sep 04 03:48:27.484 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 04 03:48:28.623 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 04 03:48:28.623 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 04 03:48:28.623 INFO kablam!    |
Sep 04 03:48:28.624 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 04 03:48:28.624 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 04 03:48:28.624 INFO kablam! 
Sep 04 03:48:28.639 INFO kablam! error: aborting due to previous error
Sep 04 03:48:28.639 INFO kablam! 
Sep 04 03:48:28.639 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 04 03:48:28.645 INFO kablam! error: Could not compile `cortex-m`.
Sep 04 03:48:28.645 INFO kablam! 
Sep 04 03:48:28.645 INFO kablam! To learn more, run the command again with --verbose.
Sep 04 03:48:28.646 INFO kablam! su: No module specific data is present
Sep 04 03:48:29.029 INFO running `"docker" "rm" "-f" "90d9fc242fd6086b62d70af0a79e2ad05d0c9fad0761c3eca6604643a8f46b3d"`
Sep 04 03:48:29.134 INFO blam! 90d9fc242fd6086b62d70af0a79e2ad05d0c9fad0761c3eca6604643a8f46b3d