Aug 11 08:37:26.491 INFO checking microbit-0.5.4 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 08:37:26.491 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 08:37:26.491 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 08:37:26.491 INFO running `"docker" "create" "-v" "/tmp/crater.9DHWdf389y3i:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-1/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 08:37:26.716 INFO blam! 3848153648dd59b9049fc8af65573a41bd4f8cd1c24d70a1ab7bdc72b35fa3cc
Aug 11 08:37:26.717 INFO running `"docker" "start" "-a" "3848153648dd59b9049fc8af65573a41bd4f8cd1c24d70a1ab7bdc72b35fa3cc"`
Aug 11 08:37:27.822 INFO kablam!    Compiling nrf51 v0.5.0
Aug 11 08:37:27.822 INFO kablam!     Checking bare-metal v0.2.1
Aug 11 08:37:27.834 INFO kablam!     Checking rand_core v0.2.1
Aug 11 08:37:27.837 INFO kablam!     Checking dcf77 v0.1.0
Aug 11 08:37:27.842 INFO kablam!    Compiling cortex-m-rt v0.5.1
Aug 11 08:37:27.844 INFO kablam!     Checking mag3110 v0.1.3
Aug 11 08:37:28.350 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 08:37:28.350 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.2.1/src/lib.rs:7:23
Aug 11 08:37:28.350 INFO kablam!   |
Aug 11 08:37:28.350 INFO kablam! 7 |     feature(const_fn, const_unsafe_cell_new)
Aug 11 08:37:28.350 INFO kablam!   |                       ^^^^^^^^^^^^^^^^^^^^^
Aug 11 08:37:28.351 INFO kablam! 
Aug 11 08:37:28.361 INFO kablam! error: aborting due to previous error
Aug 11 08:37:28.361 INFO kablam! 
Aug 11 08:37:28.362 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 08:37:28.368 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 08:37:28.369 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 08:37:29.723 INFO kablam! error: build failed
Aug 11 08:37:29.725 INFO kablam! su: No module specific data is present
Aug 11 08:37:30.261 INFO running `"docker" "rm" "-f" "3848153648dd59b9049fc8af65573a41bd4f8cd1c24d70a1ab7bdc72b35fa3cc"`
Aug 11 08:37:30.427 INFO blam! 3848153648dd59b9049fc8af65573a41bd4f8cd1c24d70a1ab7bdc72b35fa3cc