Aug 10 23:50:50.611 INFO checking tm4c123x-0.4.0 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 10 23:50:50.611 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 10 23:50:50.611 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 10 23:50:50.611 INFO running `"docker" "create" "-v" "/tmp/crater.jbssbcXuUkac:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-6/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 10 23:50:50.835 INFO blam! a100d1e45721f9a034f04b40a5a053801de6b614f596e1a6664a509d89f312b3
Aug 10 23:50:50.837 INFO running `"docker" "start" "-a" "a100d1e45721f9a034f04b40a5a053801de6b614f596e1a6664a509d89f312b3"`
Aug 10 23:50:52.048 INFO kablam!     Checking vcell v0.1.0
Aug 10 23:50:52.049 INFO kablam!    Compiling cortex-m v0.2.12
Aug 10 23:50:52.051 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Aug 10 23:50:52.053 INFO kablam!     Checking aligned v0.1.2
Aug 10 23:50:52.272 INFO kablam!     Checking volatile-register v0.2.0
Aug 10 23:50:54.523 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 10 23:50:54.523 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Aug 10 23:50:54.523 INFO kablam!    |
Aug 10 23:50:54.523 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Aug 10 23:50:54.523 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Aug 10 23:50:54.523 INFO kablam! 
Aug 10 23:50:54.565 INFO kablam! error: aborting due to previous error
Aug 10 23:50:54.565 INFO kablam! 
Aug 10 23:50:54.565 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 10 23:50:54.573 INFO kablam! error: Could not compile `cortex-m`.
Aug 10 23:50:54.573 INFO kablam! 
Aug 10 23:50:54.573 INFO kablam! To learn more, run the command again with --verbose.
Aug 10 23:50:54.575 INFO kablam! su: No module specific data is present
Aug 10 23:50:55.157 INFO running `"docker" "rm" "-f" "a100d1e45721f9a034f04b40a5a053801de6b614f596e1a6664a509d89f312b3"`
Aug 10 23:50:55.332 INFO blam! a100d1e45721f9a034f04b40a5a053801de6b614f596e1a6664a509d89f312b3