Aug 02 04:27:39.336 INFO checking mersenne_twister-1.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 04:27:39.336 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:27:39.336 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:27:39.336 INFO running `"docker" "create" "-v" "/tmp/crater.unePvLScjo2I:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2+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 04:27:39.585 INFO blam! 49797096b4156a5855e735eeeb2ce045d902102fef9f26d515682c08314d0b1e
Aug 02 04:27:39.588 INFO running `"docker" "start" "-a" "49797096b4156a5855e735eeeb2ce045d902102fef9f26d515682c08314d0b1e"`
Aug 02 04:27:41.054 INFO kablam!     Checking mersenne_twister v1.1.1 (file:///source)
Aug 02 04:27:43.061 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:27:43.061 INFO kablam!  --> benches/benchmarks.rs:1:1
Aug 02 04:27:43.061 INFO kablam!   |
Aug 02 04:27:43.061 INFO kablam! 1 | #![feature(test)]
Aug 02 04:27:43.061 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 04:27:43.061 INFO kablam! 
Aug 02 04:27:43.061 INFO kablam! error: aborting due to previous error
Aug 02 04:27:43.061 INFO kablam! 
Aug 02 04:27:43.061 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:27:43.089 INFO kablam! error: Could not compile `mersenne_twister`.
Aug 02 04:27:43.089 INFO kablam! 
Aug 02 04:27:43.089 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 04:27:43.089 INFO kablam! su: No module specific data is present
Aug 02 04:27:44.046 INFO running `"docker" "rm" "-f" "49797096b4156a5855e735eeeb2ce045d902102fef9f26d515682c08314d0b1e"`
Aug 02 04:27:44.211 INFO blam! 49797096b4156a5855e735eeeb2ce045d902102fef9f26d515682c08314d0b1e