Aug 02 12:45:15.369 INFO checking closures-0.1.2 against 1.27.2+tmplazy for lazy_static-1
Aug 02 12:45:15.369 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:45:15.369 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 12:45:15.369 INFO running `"docker" "create" "-v" "/tmp/crater.TrDdBy4RHzha:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+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 12:45:15.656 INFO blam! fc614a3d53c86db5840c3ce506af5df46e781a26dec14b9665c267e3cfe9f3f5
Aug 02 12:45:15.657 INFO running `"docker" "start" "-a" "fc614a3d53c86db5840c3ce506af5df46e781a26dec14b9665c267e3cfe9f3f5"`
Aug 02 12:45:16.790 INFO kablam!     Checking closures v0.1.2 (file:///source)
Aug 02 12:45:17.042 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:45:17.042 INFO kablam!  --> src/lib.rs:1:1
Aug 02 12:45:17.042 INFO kablam!   |
Aug 02 12:45:17.042 INFO kablam! 1 | #![feature(unboxed_closures,fn_traits)]
Aug 02 12:45:17.042 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:45:17.042 INFO kablam! 
Aug 02 12:45:17.055 INFO kablam! error: aborting due to previous error
Aug 02 12:45:17.055 INFO kablam! 
Aug 02 12:45:17.056 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:45:17.068 INFO kablam! error: Could not compile `closures`.
Aug 02 12:45:17.068 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 12:45:17.478 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 12:45:17.478 INFO kablam!  --> src/lib.rs:1:1
Aug 02 12:45:17.478 INFO kablam!   |
Aug 02 12:45:17.478 INFO kablam! 1 | #![feature(unboxed_closures,fn_traits)]
Aug 02 12:45:17.478 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 12:45:17.478 INFO kablam! 
Aug 02 12:45:17.499 INFO kablam! error: aborting due to previous error
Aug 02 12:45:17.499 INFO kablam! 
Aug 02 12:45:17.499 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 12:45:17.512 INFO kablam! error: Could not compile `closures`.
Aug 02 12:45:17.512 INFO kablam! 
Aug 02 12:45:17.512 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 12:45:17.513 INFO kablam! su: No module specific data is present
Aug 02 12:45:18.251 INFO running `"docker" "rm" "-f" "fc614a3d53c86db5840c3ce506af5df46e781a26dec14b9665c267e3cfe9f3f5"`
Aug 02 12:45:18.400 INFO blam! fc614a3d53c86db5840c3ce506af5df46e781a26dec14b9665c267e3cfe9f3f5