Aug 11 00:56:02.740 INFO checking stm32f411xx-0.0.1 against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 11 00:56:02.741 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 00:56:02.741 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 00:56:02.741 INFO running `"docker" "create" "-v" "/tmp/crater.nYLI2YZbqY0P:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-3/try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy:/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 +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 00:56:02.997 INFO blam! f035ea056cabf9cac28672c676b990366a0331db0fc15809fa22763c20714ae1
Aug 11 00:56:02.998 INFO running `"docker" "start" "-a" "f035ea056cabf9cac28672c676b990366a0331db0fc15809fa22763c20714ae1"`
Aug 11 00:56:04.058 INFO kablam!     Checking bare-metal v0.1.2
Aug 11 00:56:04.065 INFO kablam!    Compiling cortex-m v0.4.3
Aug 11 00:56:04.295 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 00:56:04.295 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 11 00:56:04.295 INFO kablam!   |
Aug 11 00:56:04.295 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 11 00:56:04.295 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 00:56:04.295 INFO kablam! 
Aug 11 00:56:04.296 INFO kablam! error: aborting due to previous error
Aug 11 00:56:04.296 INFO kablam! 
Aug 11 00:56:04.296 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 00:56:04.313 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 00:56:04.313 INFO kablam! 
Aug 11 00:56:04.313 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 00:56:04.315 INFO kablam! su: No module specific data is present
Aug 11 00:56:04.946 INFO running `"docker" "rm" "-f" "f035ea056cabf9cac28672c676b990366a0331db0fc15809fa22763c20714ae1"`
Aug 11 00:56:05.136 INFO blam! f035ea056cabf9cac28672c676b990366a0331db0fc15809fa22763c20714ae1