Aug 11 00:59:58.069 INFO checking stm32f100xx-0.4.0 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 00:59:58.069 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 00:59:58.069 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 00:59:58.069 INFO running `"docker" "create" "-v" "/tmp/crater.NMA60D8CjpUl:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-7/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 11 00:59:58.293 INFO blam! 4d4e7b5838fad962a153b7b7d768c0b4c0808c66f0f5bdb7006648eef7e50acd
Aug 11 00:59:58.294 INFO running `"docker" "start" "-a" "4d4e7b5838fad962a153b7b7d768c0b4c0808c66f0f5bdb7006648eef7e50acd"`
Aug 11 00:59:59.738 INFO kablam!    Compiling cortex-m v0.2.12
Aug 11 00:59:59.744 INFO kablam!     Checking cortex-m-semihosting v0.1.3
Aug 11 01:00:01.463 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 01:00:01.463 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.2.12/src/lib.rs:16:12
Aug 11 01:00:01.463 INFO kablam!    |
Aug 11 01:00:01.463 INFO kablam! 16 | #![feature(const_unsafe_cell_new)]
Aug 11 01:00:01.463 INFO kablam!    |            ^^^^^^^^^^^^^^^^^^^^^
Aug 11 01:00:01.463 INFO kablam! 
Aug 11 01:00:01.488 INFO kablam! error: aborting due to previous error
Aug 11 01:00:01.489 INFO kablam! 
Aug 11 01:00:01.489 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 01:00:01.496 INFO kablam! error: Could not compile `cortex-m`.
Aug 11 01:00:01.497 INFO kablam! 
Aug 11 01:00:01.497 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 01:00:01.504 INFO kablam! su: No module specific data is present
Aug 11 01:00:02.177 INFO running `"docker" "rm" "-f" "4d4e7b5838fad962a153b7b7d768c0b4c0808c66f0f5bdb7006648eef7e50acd"`
Aug 11 01:00:02.334 INFO blam! 4d4e7b5838fad962a153b7b7d768c0b4c0808c66f0f5bdb7006648eef7e50acd