Aug 02 03:24:51.971 INFO checking nrf51-hal-0.5.1 against 1.27.2 for lazy_static-1
Aug 02 03:24:51.971 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:24:51.972 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:24:51.972 INFO running `"docker" "create" "-v" "/tmp/crater.3ZFT9nGGYUqR:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/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 +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 03:24:52.154 INFO blam! 828ff63b428a8f399117b301af9bc23ec48ce1d7d197660a798f9aa1a3afbc1f
Aug 02 03:24:52.156 INFO running `"docker" "start" "-a" "828ff63b428a8f399117b301af9bc23ec48ce1d7d197660a798f9aa1a3afbc1f"`
Aug 02 03:24:54.223 INFO kablam!    Compiling nrf51 v0.5.0
Aug 02 03:24:54.226 INFO kablam!     Checking bare-metal v0.2.0
Aug 02 03:24:54.607 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:24:54.607 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.2.0/src/lib.rs:5:35
Aug 02 03:24:54.607 INFO kablam!   |
Aug 02 03:24:54.608 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 02 03:24:54.608 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:24:54.608 INFO kablam! 
Aug 02 03:24:54.608 INFO kablam! error: aborting due to previous error
Aug 02 03:24:54.608 INFO kablam! 
Aug 02 03:24:54.608 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:24:54.621 INFO kablam! error: Could not compile `bare-metal`.
Aug 02 03:24:54.621 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 03:24:55.675 INFO kablam! error: build failed
Aug 02 03:24:55.676 INFO kablam! su: No module specific data is present
Aug 02 03:24:56.884 INFO running `"docker" "rm" "-f" "828ff63b428a8f399117b301af9bc23ec48ce1d7d197660a798f9aa1a3afbc1f"`
Aug 02 03:24:56.966 INFO blam! 828ff63b428a8f399117b301af9bc23ec48ce1d7d197660a798f9aa1a3afbc1f