Aug 01 23:02:40.236 INFO checking samd21g18a-0.2.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 23:02:40.236 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:02:40.236 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 23:02:40.236 INFO running `"docker" "create" "-v" "/tmp/crater.5TsyMh0bb0IH:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2+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 01 23:02:40.623 INFO blam! b67445a8a4ac726dd9afa56a1518880b50ae14a3573ba3703009db7bf26016cc
Aug 01 23:02:40.625 INFO running `"docker" "start" "-a" "b67445a8a4ac726dd9afa56a1518880b50ae14a3573ba3703009db7bf26016cc"`
Aug 01 23:02:42.305 INFO kablam!    Compiling cortex-m v0.3.1
Aug 01 23:02:42.305 INFO kablam!     Checking aligned v0.1.2
Aug 01 23:02:42.306 INFO kablam!     Checking bare-metal v0.1.2
Aug 01 23:02:42.819 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:02:42.820 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.2/src/lib.rs:5:35
Aug 01 23:02:42.820 INFO kablam!   |
Aug 01 23:02:42.820 INFO kablam! 5 | #![cfg_attr(feature = "const-fn", feature(const_fn, const_unsafe_cell_new))]
Aug 01 23:02:42.820 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 23:02:42.829 INFO kablam! 
Aug 01 23:02:42.829 INFO kablam! error: aborting due to previous error
Aug 01 23:02:42.830 INFO kablam! 
Aug 01 23:02:42.830 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:02:42.837 INFO kablam! error: Could not compile `bare-metal`.
Aug 01 23:02:42.837 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:02:42.845 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 23:02:42.845 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.2/src/lib.rs:32:35
Aug 01 23:02:42.845 INFO kablam!    |
Aug 01 23:02:42.845 INFO kablam! 32 | #![cfg_attr(feature = "const-fn", feature(const_fn))]
Aug 01 23:02:42.845 INFO kablam!    |                                   ^^^^^^^^^^^^^^^^^^
Aug 01 23:02:42.846 INFO kablam! 
Aug 01 23:02:42.848 INFO kablam! error: aborting due to previous error
Aug 01 23:02:42.848 INFO kablam! 
Aug 01 23:02:42.849 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 23:02:42.856 INFO kablam! error: Could not compile `aligned`.
Aug 01 23:02:42.856 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 23:02:43.944 INFO kablam! error: build failed
Aug 01 23:02:43.945 INFO kablam! su: No module specific data is present
Aug 01 23:02:45.326 INFO running `"docker" "rm" "-f" "b67445a8a4ac726dd9afa56a1518880b50ae14a3573ba3703009db7bf26016cc"`
Aug 01 23:02:45.536 INFO blam! b67445a8a4ac726dd9afa56a1518880b50ae14a3573ba3703009db7bf26016cc