Aug 01 20:53:11.669 INFO checking tagged_ptr-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 20:53:11.670 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:53:11.670 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:53:11.670 INFO running `"docker" "create" "-v" "/tmp/crater.MJN3EmIoekuv:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 01 20:53:11.847 INFO blam! efd733e7037e7dd8fbc32c8562caa01c27a2264ac6769c1c1f0ce50d38c2bb89
Aug 01 20:53:11.849 INFO running `"docker" "start" "-a" "efd733e7037e7dd8fbc32c8562caa01c27a2264ac6769c1c1f0ce50d38c2bb89"`
Aug 01 20:53:12.794 INFO kablam!     Checking tagged_ptr v0.1.0 (file:///source)
Aug 01 20:53:13.015 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:53:13.015 INFO kablam!  --> src/lib.rs:1:1
Aug 01 20:53:13.015 INFO kablam!   |
Aug 01 20:53:13.015 INFO kablam! 1 | #![feature(rc_raw)]
Aug 01 20:53:13.015 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^
Aug 01 20:53:13.015 INFO kablam! 
Aug 01 20:53:13.016 INFO kablam! error: aborting due to previous error
Aug 01 20:53:13.016 INFO kablam! 
Aug 01 20:53:13.016 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:53:13.022 INFO kablam! error: Could not compile `tagged_ptr`.
Aug 01 20:53:13.022 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:53:13.037 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:53:13.037 INFO kablam!  --> src/lib.rs:1:1
Aug 01 20:53:13.037 INFO kablam!   |
Aug 01 20:53:13.037 INFO kablam! 1 | #![feature(rc_raw)]
Aug 01 20:53:13.037 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^
Aug 01 20:53:13.037 INFO kablam! 
Aug 01 20:53:13.041 INFO kablam! error: aborting due to previous error
Aug 01 20:53:13.041 INFO kablam! 
Aug 01 20:53:13.041 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:53:13.045 INFO kablam! error: Could not compile `tagged_ptr`.
Aug 01 20:53:13.045 INFO kablam! 
Aug 01 20:53:13.045 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 20:53:13.046 INFO kablam! su: No module specific data is present
Aug 01 20:53:13.768 INFO running `"docker" "rm" "-f" "efd733e7037e7dd8fbc32c8562caa01c27a2264ac6769c1c1f0ce50d38c2bb89"`
Aug 01 20:53:13.933 INFO blam! efd733e7037e7dd8fbc32c8562caa01c27a2264ac6769c1c1f0ce50d38c2bb89