Aug 11 09:22:16.625 INFO checking lm4f120-0.9.1 against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 11 09:22:16.625 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 09:22:16.625 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 09:22:16.625 INFO running `"docker" "create" "-v" "/tmp/crater.38TgFmgFRhs0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-5/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 09:22:16.874 INFO blam! bbae475fb1749382b9ec9976b4e51b5d226f64fa70c73fd59cf45ef371808083
Aug 11 09:22:16.877 INFO running `"docker" "start" "-a" "bbae475fb1749382b9ec9976b4e51b5d226f64fa70c73fd59cf45ef371808083"`
Aug 11 09:22:18.249 INFO kablam!     Checking vcell v0.1.0
Aug 11 09:22:18.252 INFO kablam!    Compiling cortex-m v0.4.3
Aug 11 09:22:18.255 INFO kablam!     Checking bare-metal v0.1.2
Aug 11 09:22:18.256 INFO kablam!     Checking void v1.0.2
Aug 11 09:22:18.259 INFO kablam!     Checking aligned v0.1.2
Aug 11 09:22:18.261 INFO kablam!     Checking untagged-option v0.1.1
Aug 11 09:22:18.263 INFO kablam!     Checking nb v0.1.1
Aug 11 09:22:18.795 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 09:22:18.795 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 11 09:22:18.795 INFO kablam!   |
Aug 11 09:22:18.796 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 11 09:22:18.796 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 09:22:18.796 INFO kablam! 
Aug 11 09:22:18.800 INFO kablam! error: aborting due to previous error
Aug 11 09:22:18.800 INFO kablam! 
Aug 11 09:22:18.800 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 09:22:18.810 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 09:22:18.811 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 09:22:18.947 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 09:22:18.947 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:53
Aug 11 09:22:18.948 INFO kablam!   |
Aug 11 09:22:18.948 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 11 09:22:18.948 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 09:22:18.948 INFO kablam! 
Aug 11 09:22:18.950 INFO kablam! error: aborting due to previous error
Aug 11 09:22:18.950 INFO kablam! 
Aug 11 09:22:18.950 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 09:22:18.957 INFO kablam! error: Could not compile `bare-metal`.
Aug 11 09:22:18.957 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 09:22:19.858 INFO kablam! error: build failed
Aug 11 09:22:19.861 INFO kablam! su: No module specific data is present
Aug 11 09:22:20.436 INFO running `"docker" "rm" "-f" "bbae475fb1749382b9ec9976b4e51b5d226f64fa70c73fd59cf45ef371808083"`
Aug 11 09:22:20.584 INFO blam! bbae475fb1749382b9ec9976b4e51b5d226f64fa70c73fd59cf45ef371808083