Aug 01 21:51:39.488 INFO checking snowflake-1.3.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 21:51:39.488 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:51:39.488 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:51:39.489 INFO running `"docker" "create" "-v" "/tmp/crater.gys64nZZa9Fv:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 21:51:39.722 INFO blam! ec2300a692c12beb6195df0d8dcf3344d877310f31970a4fd9651822cc8da4ff
Aug 01 21:51:39.724 INFO running `"docker" "start" "-a" "ec2300a692c12beb6195df0d8dcf3344d877310f31970a4fd9651822cc8da4ff"`
Aug 01 21:51:40.659 INFO kablam!     Checking snowflake v1.3.0 (file:///source)
Aug 01 21:51:41.296 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:51:41.296 INFO kablam!  --> src/lib.rs:9:19
Aug 01 21:51:41.296 INFO kablam!   |
Aug 01 21:51:41.296 INFO kablam! 9 | #![cfg_attr(test, feature(test))]
Aug 01 21:51:41.296 INFO kablam!   |                   ^^^^^^^^^^^^^^
Aug 01 21:51:41.296 INFO kablam! 
Aug 01 21:51:41.296 INFO kablam! error: aborting due to previous error
Aug 01 21:51:41.297 INFO kablam! 
Aug 01 21:51:41.297 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:51:41.305 INFO kablam! error: Could not compile `snowflake`.
Aug 01 21:51:41.305 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 21:51:41.326 INFO kablam! error: build failed
Aug 01 21:51:41.327 INFO kablam! su: No module specific data is present
Aug 01 21:51:41.903 INFO running `"docker" "rm" "-f" "ec2300a692c12beb6195df0d8dcf3344d877310f31970a4fd9651822cc8da4ff"`
Aug 01 21:51:42.054 INFO blam! ec2300a692c12beb6195df0d8dcf3344d877310f31970a4fd9651822cc8da4ff