Aug 01 14:50:33.002 INFO checking souvik1997/kernel-roulette against 1.27.2+tmplazy for lazy_static-1
Aug 01 14:50:33.002 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 14:50:33.002 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 14:50:33.002 INFO running `"docker" "create" "-v" "/tmp/crater.sfg4K597tJ45:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+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 14:50:33.231 INFO blam! 0c305e2ffb781d5167485c07724c337d6e2bc55a5a555a3ee4222d2bdf660a7a
Aug 01 14:50:33.233 INFO running `"docker" "start" "-a" "0c305e2ffb781d5167485c07724c337d6e2bc55a5a555a3ee4222d2bdf660a7a"`
Aug 01 14:50:34.045 INFO kablam!     Checking spin v0.4.8
Aug 01 14:50:34.045 INFO kablam!     Checking rand v0.4.2
Aug 01 14:50:34.522 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 14:50:34.522 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:6:30
Aug 01 14:50:34.522 INFO kablam!   |
Aug 01 14:50:34.522 INFO kablam! 6 | #![cfg_attr(feature = "asm", feature(asm))]
Aug 01 14:50:34.522 INFO kablam!   |                              ^^^^^^^^^^^^^
Aug 01 14:50:34.523 INFO kablam! 
Aug 01 14:50:34.523 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 14:50:34.523 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:7:42
Aug 01 14:50:34.523 INFO kablam!   |
Aug 01 14:50:34.523 INFO kablam! 7 | #![cfg_attr(feature = "core_intrinsics", feature(core_intrinsics))]
Aug 01 14:50:34.523 INFO kablam!   |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 14:50:34.523 INFO kablam! 
Aug 01 14:50:34.523 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 14:50:34.523 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:8:35
Aug 01 14:50:34.523 INFO kablam!   |
Aug 01 14:50:34.523 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 01 14:50:34.523 INFO kablam!   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 14:50:34.523 INFO kablam! 
Aug 01 14:50:34.527 INFO kablam! error: aborting due to 3 previous errors
Aug 01 14:50:34.527 INFO kablam! 
Aug 01 14:50:34.527 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 14:50:34.537 INFO kablam! error: Could not compile `spin`.
Aug 01 14:50:34.537 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 14:50:36.607 INFO kablam! error: build failed
Aug 01 14:50:36.609 INFO kablam! su: No module specific data is present
Aug 01 14:50:37.171 INFO running `"docker" "rm" "-f" "0c305e2ffb781d5167485c07724c337d6e2bc55a5a555a3ee4222d2bdf660a7a"`
Aug 01 14:50:37.343 INFO blam! 0c305e2ffb781d5167485c07724c337d6e2bc55a5a555a3ee4222d2bdf660a7a