Aug 11 15:37:04.417 INFO checking efr32xg12p-0.1.1 against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 11 15:37:04.417 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 15:37:04.417 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 15:37:04.417 INFO running `"docker" "create" "-v" "/tmp/crater.9o0fhA8EPjU8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-6/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 15:37:04.641 INFO blam! 44f07c45a78969d909b689ff85d9f2449bd2f70a4112fafecd859aeddc825d06
Aug 11 15:37:04.644 INFO running `"docker" "start" "-a" "44f07c45a78969d909b689ff85d9f2449bd2f70a4112fafecd859aeddc825d06"`
Aug 11 15:37:06.111 INFO kablam!     Checking bare-metal v0.1.2
Aug 11 15:37:06.252 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 15:37:06.252 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 11 15:37:06.252 INFO kablam!   |
Aug 11 15:37:06.252 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 11 15:37:06.252 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 15:37:06.254 INFO kablam! 
Aug 11 15:37:06.255 INFO kablam! error: aborting due to previous error
Aug 11 15:37:06.256 INFO kablam! 
Aug 11 15:37:06.256 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 15:37:06.261 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 15:37:06.261 INFO kablam! 
Aug 11 15:37:06.261 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 15:37:06.262 INFO kablam! su: No module specific data is present
Aug 11 15:37:06.963 INFO running `"docker" "rm" "-f" "44f07c45a78969d909b689ff85d9f2449bd2f70a4112fafecd859aeddc825d06"`
Aug 11 15:37:07.069 INFO blam! 44f07c45a78969d909b689ff85d9f2449bd2f70a4112fafecd859aeddc825d06