Aug 02 13:01:44.833 INFO checking chalk-engine-0.6.0 against 1.27.2 for lazy_static-1
Aug 02 13:01:44.833 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:01:44.833 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:01:44.833 INFO running `"docker" "create" "-v" "/tmp/crater.BTt8II4G1vT7:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2:/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 13:01:45.086 INFO blam! 3991370b98a56dc93bfa79413ef3f9dafc1b87d66b2040faeb38de40ea6783ac
Aug 02 13:01:45.089 INFO running `"docker" "start" "-a" "3991370b98a56dc93bfa79413ef3f9dafc1b87d66b2040faeb38de40ea6783ac"`
Aug 02 13:01:46.015 INFO kablam!    Compiling stacker v0.1.3
Aug 02 13:01:46.015 INFO kablam!     Checking chalk-macros v0.1.0
Aug 02 13:01:46.638 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:01:46.638 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/chalk-macros-0.1.0/src/lib.rs:1:1
Aug 02 13:01:46.638 INFO kablam!   |
Aug 02 13:01:46.638 INFO kablam! 1 | #![feature(crate_visibility_modifier)]
Aug 02 13:01:46.638 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:01:46.639 INFO kablam! 
Aug 02 13:01:46.639 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:01:46.639 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/chalk-macros-0.1.0/src/lib.rs:2:1
Aug 02 13:01:46.639 INFO kablam!   |
Aug 02 13:01:46.639 INFO kablam! 2 | #![feature(macro_vis_matcher)]
Aug 02 13:01:46.639 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:01:46.640 INFO kablam! 
Aug 02 13:01:46.640 INFO kablam! error: aborting due to 2 previous errors
Aug 02 13:01:46.641 INFO kablam! 
Aug 02 13:01:46.641 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:01:46.650 INFO kablam! error: Could not compile `chalk-macros`.
Aug 02 13:01:46.651 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:01:47.489 INFO kablam! error: build failed
Aug 02 13:01:47.490 INFO kablam! su: No module specific data is present
Aug 02 13:01:48.483 INFO running `"docker" "rm" "-f" "3991370b98a56dc93bfa79413ef3f9dafc1b87d66b2040faeb38de40ea6783ac"`
Aug 02 13:01:48.608 INFO blam! 3991370b98a56dc93bfa79413ef3f9dafc1b87d66b2040faeb38de40ea6783ac