Sep 19 16:52:29.958 INFO checking tm4c123x-0.4.0 against try#fcacde07b66fe513e52c41b73aef91bcc121905b for pr-54346
Sep 19 16:52:29.958 INFO running: cargo +fcacde07b66fe513e52c41b73aef91bcc121905b-alt check --frozen --all --all-targets
Sep 19 16:52:29.958 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54346/try#fcacde07b66fe513e52c41b73aef91bcc121905b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-1/try#fcacde07b66fe513e52c41b73aef91bcc121905b:/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 +fcacde07b66fe513e52c41b73aef91bcc121905b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 16:52:30.332 INFO blam! f857c6a42c30a2232a43ae2825b98c7ce208d1486635c27c8ed7f5e4f7be25dd
Sep 19 16:52:30.334 INFO running `"docker" "start" "-a" "f857c6a42c30a2232a43ae2825b98c7ce208d1486635c27c8ed7f5e4f7be25dd"`
Sep 19 16:52:32.418 INFO kablam! usermod: no changes
Sep 19 16:52:32.523 INFO kablam!    Compiling cortex-m v0.2.12
Sep 19 16:52:32.523 INFO kablam!     Checking vcell v0.1.0
Sep 19 16:52:32.523 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Sep 19 16:52:32.523 INFO kablam!     Checking aligned v0.1.2
Sep 19 16:52:32.903 INFO kablam!     Checking volatile-register v0.2.0
Sep 19 16:52:34.719 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 19 16:52:34.720 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Sep 19 16:52:34.720 INFO kablam!    |
Sep 19 16:52:34.721 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Sep 19 16:52:34.721 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Sep 19 16:52:34.721 INFO kablam! 
Sep 19 16:52:34.722 INFO kablam! error: aborting due to previous error
Sep 19 16:52:34.722 INFO kablam! 
Sep 19 16:52:34.723 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 19 16:52:34.729 INFO kablam! error: Could not compile `cortex-m`.
Sep 19 16:52:34.729 INFO kablam! 
Sep 19 16:52:34.729 INFO kablam! To learn more, run the command again with --verbose.
Sep 19 16:52:34.739 INFO kablam! su: No module specific data is present
Sep 19 16:52:36.255 INFO running `"docker" "rm" "-f" "f857c6a42c30a2232a43ae2825b98c7ce208d1486635c27c8ed7f5e4f7be25dd"`
Sep 19 16:52:36.578 INFO blam! f857c6a42c30a2232a43ae2825b98c7ce208d1486635c27c8ed7f5e4f7be25dd