Aug 11 01:00:21.889 INFO checking stm32f042-0.6.1 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 01:00:21.889 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 01:00:21.889 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 01:00:21.889 INFO running `"docker" "create" "-v" "/tmp/crater.n6kJX5zrX3J1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-0/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 01:00:22.187 INFO blam! cbb2593971d2df758bdd546dc10a34a3209093a2394bfa842ca2c05ff33954bd
Aug 11 01:00:22.188 INFO running `"docker" "start" "-a" "cbb2593971d2df758bdd546dc10a34a3209093a2394bfa842ca2c05ff33954bd"`
Aug 11 01:00:23.326 INFO kablam!    Compiling stm32f042 v0.6.1 (file:///source)
Aug 11 01:00:23.329 INFO kablam!     Checking bare-metal v0.2.1
Aug 11 01:00:23.331 INFO kablam!     Checking panic-abort v0.2.0
Aug 11 01:00:23.334 INFO kablam!    Compiling cortex-m-rt v0.5.1
Aug 11 01:00:23.335 INFO kablam!    Compiling cortex-m v0.5.3
Aug 11 01:00:24.065 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 01:00:24.065 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.2.1/src/lib.rs:7:23
Aug 11 01:00:24.065 INFO kablam!   |
Aug 11 01:00:24.065 INFO kablam! 7 |     feature(const_fn, const_unsafe_cell_new)
Aug 11 01:00:24.066 INFO kablam!   |                       ^^^^^^^^^^^^^^^^^^^^^
Aug 11 01:00:24.066 INFO kablam! 
Aug 11 01:00:24.068 INFO kablam! error: aborting due to previous error
Aug 11 01:00:24.068 INFO kablam! 
Aug 11 01:00:24.068 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 01:00:24.089 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 01:00:24.089 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 01:00:26.328 INFO kablam! error: build failed
Aug 11 01:00:26.330 INFO kablam! su: No module specific data is present
Aug 11 01:00:26.861 INFO running `"docker" "rm" "-f" "cbb2593971d2df758bdd546dc10a34a3209093a2394bfa842ca2c05ff33954bd"`
Aug 11 01:00:27.043 INFO blam! cbb2593971d2df758bdd546dc10a34a3209093a2394bfa842ca2c05ff33954bd