Aug 02 13:34:13.083 INFO checking cadence-0.15.1 against 1.27.2 for lazy_static-1
Aug 02 13:34:13.083 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:34:13.083 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:34:13.083 INFO running `"docker" "create" "-v" "/tmp/crater.txYMT5j7cpgc:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/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 02 13:34:13.351 INFO blam! d39a281915f1c2e9991b4dab5ac25b0af64fe36865a5444e4adb4e243f9e2ad7
Aug 02 13:34:13.353 INFO running `"docker" "start" "-a" "d39a281915f1c2e9991b4dab5ac25b0af64fe36865a5444e4adb4e243f9e2ad7"`
Aug 02 13:34:14.681 INFO kablam!     Checking cadence v0.15.1 (file:///source)
Aug 02 13:34:21.102 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:34:21.103 INFO kablam!  --> benches/lib.rs:1:1
Aug 02 13:34:21.103 INFO kablam!   |
Aug 02 13:34:21.103 INFO kablam! 1 | #![feature(test)]
Aug 02 13:34:21.103 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 13:34:21.113 INFO kablam! 
Aug 02 13:34:21.114 INFO kablam! error: aborting due to previous error
Aug 02 13:34:21.114 INFO kablam! 
Aug 02 13:34:21.114 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:34:21.142 INFO kablam! error: Could not compile `cadence`.
Aug 02 13:34:21.142 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:34:21.741 INFO kablam! error: build failed
Aug 02 13:34:21.743 INFO kablam! su: No module specific data is present
Aug 02 13:34:22.694 INFO running `"docker" "rm" "-f" "d39a281915f1c2e9991b4dab5ac25b0af64fe36865a5444e4adb4e243f9e2ad7"`
Aug 02 13:34:22.870 INFO blam! d39a281915f1c2e9991b4dab5ac25b0af64fe36865a5444e4adb4e243f9e2ad7