Aug 02 12:27:48.585 INFO checking cons-list-0.0.3 against 1.27.2+tmplazy for lazy_static-1
Aug 02 12:27:48.585 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:27:48.585 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:27:48.585 INFO running `"docker" "create" "-v" "/tmp/crater.eUxxinFEk2SS:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2+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 12:27:48.828 INFO blam! e53a47aaac1ab40d31d1c11b22fa4a137c99f5520638daf0c9f08c5839973be8
Aug 02 12:27:48.830 INFO running `"docker" "start" "-a" "e53a47aaac1ab40d31d1c11b22fa4a137c99f5520638daf0c9f08c5839973be8"`
Aug 02 12:27:50.538 INFO kablam!     Checking cons-list v0.0.3 (file:///source)
Aug 02 12:27:51.079 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:27:51.079 INFO kablam!   --> src/lib.rs:13:19
Aug 02 12:27:51.079 INFO kablam!    |
Aug 02 12:27:51.079 INFO kablam! 13 | #![cfg_attr(test, feature(test))]
Aug 02 12:27:51.079 INFO kablam!    |                   ^^^^^^^^^^^^^^
Aug 02 12:27:51.079 INFO kablam! 
Aug 02 12:27:51.080 INFO kablam! error: aborting due to previous error
Aug 02 12:27:51.080 INFO kablam! 
Aug 02 12:27:51.080 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:27:51.086 INFO kablam! error: Could not compile `cons-list`.
Aug 02 12:27:51.086 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:27:51.258 INFO kablam! error: build failed
Aug 02 12:27:51.258 INFO kablam! su: No module specific data is present
Aug 02 12:27:52.341 INFO running `"docker" "rm" "-f" "e53a47aaac1ab40d31d1c11b22fa4a137c99f5520638daf0c9f08c5839973be8"`
Aug 02 12:27:52.502 INFO blam! e53a47aaac1ab40d31d1c11b22fa4a137c99f5520638daf0c9f08c5839973be8