Aug 02 03:24:51.842 INFO checking nrf51-hal-0.5.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 03:24:51.842 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:24:51.843 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 03:24:51.843 INFO running `"docker" "create" "-v" "/tmp/crater.GMbi44cSr7xx:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 03:24:52.054 INFO blam! 9310435defe193355afda1092ec85763e47bdb8f4e9d0b777c1792f810f59769
Aug 02 03:24:52.056 INFO running `"docker" "start" "-a" "9310435defe193355afda1092ec85763e47bdb8f4e9d0b777c1792f810f59769"`
Aug 02 03:24:53.126 INFO kablam!     Checking bare-metal v0.2.0
Aug 02 03:24:53.126 INFO kablam!    Compiling nrf51 v0.5.0
Aug 02 03:24:53.128 INFO kablam!     Checking cast v0.2.2
Aug 02 03:24:53.128 INFO kablam!    Compiling cortex-m v0.5.2
Aug 02 03:24:53.128 INFO kablam!    Compiling cortex-m-rt v0.5.1
Aug 02 03:24:53.128 INFO kablam!     Checking volatile-register v0.2.0
Aug 02 03:24:53.128 INFO kablam!     Checking embedded-hal v0.2.1
Aug 02 03:24:53.342 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 03:24:53.342 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.2.0/src/lib.rs:5:35
Aug 02 03:24:53.342 INFO kablam!   |
Aug 02 03:24:53.342 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 02 03:24:53.342 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 03:24:53.342 INFO kablam! 
Aug 02 03:24:53.343 INFO kablam! error: aborting due to previous error
Aug 02 03:24:53.344 INFO kablam! 
Aug 02 03:24:53.344 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 03:24:53.352 INFO kablam! error: Could not compile `bare-metal`.
Aug 02 03:24:53.353 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 03:24:55.653 INFO kablam! error: build failed
Aug 02 03:24:55.655 INFO kablam! su: No module specific data is present
Aug 02 03:24:56.999 INFO running `"docker" "rm" "-f" "9310435defe193355afda1092ec85763e47bdb8f4e9d0b777c1792f810f59769"`
Aug 02 03:24:57.090 INFO blam! 9310435defe193355afda1092ec85763e47bdb8f4e9d0b777c1792f810f59769