Aug 02 12:22:35.443 INFO checking cortex-m-rt-0.3.15 against 1.27.2+tmplazy for lazy_static-1
Aug 02 12:22:35.443 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:35.443 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:22:35.444 INFO running `"docker" "create" "-v" "/tmp/crater.LzXuG8Ar25dx:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 12:22:35.765 INFO blam! 38d5dfb56806f9f06e4c1e2c6716a1258b1fe8cd27afd085e984a60dea8c26b8
Aug 02 12:22:35.766 INFO running `"docker" "start" "-a" "38d5dfb56806f9f06e4c1e2c6716a1258b1fe8cd27afd085e984a60dea8c26b8"`
Aug 02 12:22:37.143 INFO kablam!     Checking bare-metal v0.1.2
Aug 02 12:22:37.145 INFO kablam!     Checking aligned v0.1.2
Aug 02 12:22:37.150 INFO kablam!    Compiling cortex-m v0.3.1
Aug 02 12:22:37.159 INFO kablam!    Compiling cortex-m-rt v0.3.15 (file:///source)
Aug 02 12:22:37.352 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:37.352 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 02 12:22:37.352 INFO kablam!   |
Aug 02 12:22:37.352 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 02 12:22:37.352 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:22:37.352 INFO kablam! 
Aug 02 12:22:37.353 INFO kablam! error: aborting due to previous error
Aug 02 12:22:37.353 INFO kablam! 
Aug 02 12:22:37.353 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:22:37.359 INFO kablam! error: Could not compile `bare-metal`.
Aug 02 12:22:37.359 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:22:37.541 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:22:37.541 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 02 12:22:37.541 INFO kablam!    |
Aug 02 12:22:37.541 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 02 12:22:37.541 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 02 12:22:37.541 INFO kablam! 
Aug 02 12:22:37.543 INFO kablam! error: aborting due to previous error
Aug 02 12:22:37.543 INFO kablam! 
Aug 02 12:22:37.544 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:22:37.553 INFO kablam! error: Could not compile `aligned`.
Aug 02 12:22:37.553 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:22:40.195 INFO kablam! error: build failed
Aug 02 12:22:40.195 INFO kablam! su: No module specific data is present
Aug 02 12:22:40.848 INFO running `"docker" "rm" "-f" "38d5dfb56806f9f06e4c1e2c6716a1258b1fe8cd27afd085e984a60dea8c26b8"`
Aug 02 12:22:41.024 INFO blam! 38d5dfb56806f9f06e4c1e2c6716a1258b1fe8cd27afd085e984a60dea8c26b8