Aug 11 07:29:30.245 INFO checking nucleo-f042k6-0.2.1 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 07:29:30.245 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 07:29:30.245 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 07:29:30.246 INFO running `"docker" "create" "-v" "/tmp/crater.Z531qfVX8MjW:/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 11 07:29:30.511 INFO blam! f524ec7b04197b7c49ed7e3288114d9e41a4145a999762c3ce84db68fc537de3
Aug 11 07:29:30.513 INFO running `"docker" "start" "-a" "f524ec7b04197b7c49ed7e3288114d9e41a4145a999762c3ce84db68fc537de3"`
Aug 11 07:29:31.791 INFO kablam!    Compiling cc v1.0.18
Aug 11 07:29:31.791 INFO kablam!     Checking vcell v0.1.0
Aug 11 07:29:31.793 INFO kablam!     Checking bare-metal v0.2.1
Aug 11 07:29:31.793 INFO kablam!     Checking void v1.0.2
Aug 11 07:29:31.793 INFO kablam!     Checking nb v0.1.1
Aug 11 07:29:31.794 INFO kablam!     Checking r0 v0.2.2
Aug 11 07:29:31.794 INFO kablam!     Checking aligned v0.2.0
Aug 11 07:29:31.794 INFO kablam!    Compiling stm32f042 v0.6.1
Aug 11 07:29:32.421 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 07:29:32.421 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.2.1/src/lib.rs:7:23
Aug 11 07:29:32.421 INFO kablam!   |
Aug 11 07:29:32.421 INFO kablam! 7 |     feature(const_fn, const_unsafe_cell_new)
Aug 11 07:29:32.421 INFO kablam!   |                       ^^^^^^^^^^^^^^^^^^^^^
Aug 11 07:29:32.433 INFO kablam! 
Aug 11 07:29:32.438 INFO kablam!     Checking panic-abort v0.2.0
Aug 11 07:29:32.440 INFO kablam! error: aborting due to previous error
Aug 11 07:29:32.441 INFO kablam! 
Aug 11 07:29:32.441 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 07:29:32.463 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 07:29:32.464 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 07:29:40.946 INFO kablam! error: build failed
Aug 11 07:29:40.947 INFO kablam! su: No module specific data is present
Aug 11 07:29:41.706 INFO running `"docker" "rm" "-f" "f524ec7b04197b7c49ed7e3288114d9e41a4145a999762c3ce84db68fc537de3"`
Aug 11 07:29:41.872 INFO blam! f524ec7b04197b7c49ed7e3288114d9e41a4145a999762c3ce84db68fc537de3