Aug 01 17:36:22.093 INFO checking SimonSapin/rust-on-bbc-microbit against 1.27.2 for lazy_static-1
Aug 01 17:36:22.094 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 17:36:22.094 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 17:36:22.094 INFO running `"docker" "create" "-v" "/tmp/crater.3jhdEa8jYsUY:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 01 17:36:22.331 INFO blam! 512c36a8e257223968bb5988810ba4cf75c1959666b4d3f56bc76edb26438da2
Aug 01 17:36:22.336 INFO running `"docker" "start" "-a" "512c36a8e257223968bb5988810ba4cf75c1959666b4d3f56bc76edb26438da2"`
Aug 01 17:36:23.191 INFO kablam!     Checking rust-on-bbc-microbit v0.1.0 (file:///source)
Aug 01 17:36:23.517 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 17:36:23.517 INFO kablam!  --> src/lib.rs:2:1
Aug 01 17:36:23.517 INFO kablam!   |
Aug 01 17:36:23.517 INFO kablam! 2 | #![feature(lang_items, asm)]
Aug 01 17:36:23.517 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 17:36:23.520 INFO kablam! 
Aug 01 17:36:23.521 INFO kablam! error: aborting due to previous error
Aug 01 17:36:23.522 INFO kablam! 
Aug 01 17:36:23.522 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 17:36:23.529 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Aug 01 17:36:23.529 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 17:36:23.638 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 17:36:23.638 INFO kablam!  --> src/lib.rs:2:1
Aug 01 17:36:23.639 INFO kablam!   |
Aug 01 17:36:23.639 INFO kablam! 2 | #![feature(lang_items, asm)]
Aug 01 17:36:23.639 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 17:36:23.652 INFO kablam! 
Aug 01 17:36:23.653 INFO kablam! error: aborting due to previous error
Aug 01 17:36:23.653 INFO kablam! 
Aug 01 17:36:23.653 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 17:36:23.665 INFO kablam! error: Could not compile `rust-on-bbc-microbit`.
Aug 01 17:36:23.665 INFO kablam! 
Aug 01 17:36:23.665 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 17:36:23.666 INFO kablam! su: No module specific data is present
Aug 01 17:36:24.356 INFO running `"docker" "rm" "-f" "512c36a8e257223968bb5988810ba4cf75c1959666b4d3f56bc76edb26438da2"`
Aug 01 17:36:24.510 INFO blam! 512c36a8e257223968bb5988810ba4cf75c1959666b4d3f56bc76edb26438da2