Aug 02 14:29:17.882 INFO checking avl_tree-0.2.0 against 1.27.2 for lazy_static-1
Aug 02 14:29:17.882 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:29:17.882 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:29:17.882 INFO running `"docker" "create" "-v" "/tmp/crater.jUun81iskBzL:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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 14:29:18.278 INFO blam! caa4cc41eaecab917a80965e0007e56565ff2bcf45de3be02e221224841728cd
Aug 02 14:29:18.280 INFO running `"docker" "start" "-a" "caa4cc41eaecab917a80965e0007e56565ff2bcf45de3be02e221224841728cd"`
Aug 02 14:29:19.304 INFO kablam!     Checking avl_tree v0.2.0 (file:///source)
Aug 02 14:29:20.498 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:29:20.498 INFO kablam!  --> src/lib.rs:3:1
Aug 02 14:29:20.498 INFO kablam!   |
Aug 02 14:29:20.499 INFO kablam! 3 | #![feature(test)]
Aug 02 14:29:20.499 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:29:20.499 INFO kablam! 
Aug 02 14:29:20.499 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:29:20.499 INFO kablam!  --> src/lib.rs:4:1
Aug 02 14:29:20.499 INFO kablam!   |
Aug 02 14:29:20.500 INFO kablam! 4 | #![feature(collections_bound)]
Aug 02 14:29:20.500 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:29:20.500 INFO kablam! 
Aug 02 14:29:20.500 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:29:20.500 INFO kablam!  --> src/lib.rs:5:1
Aug 02 14:29:20.501 INFO kablam!   |
Aug 02 14:29:20.501 INFO kablam! 5 | #![feature(rand)]
Aug 02 14:29:20.501 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:29:20.501 INFO kablam! 
Aug 02 14:29:20.503 INFO kablam! error: aborting due to 3 previous errors
Aug 02 14:29:20.503 INFO kablam! 
Aug 02 14:29:20.504 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:29:20.511 INFO kablam! error: Could not compile `avl_tree`.
Aug 02 14:29:20.511 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 14:29:20.632 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:29:20.632 INFO kablam!  --> src/lib.rs:3:1
Aug 02 14:29:20.632 INFO kablam!   |
Aug 02 14:29:20.632 INFO kablam! 3 | #![feature(test)]
Aug 02 14:29:20.632 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:29:20.632 INFO kablam! 
Aug 02 14:29:20.632 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:29:20.632 INFO kablam!  --> src/lib.rs:4:1
Aug 02 14:29:20.632 INFO kablam!   |
Aug 02 14:29:20.632 INFO kablam! 4 | #![feature(collections_bound)]
Aug 02 14:29:20.633 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 14:29:20.633 INFO kablam! 
Aug 02 14:29:20.633 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:29:20.633 INFO kablam!  --> src/lib.rs:5:1
Aug 02 14:29:20.633 INFO kablam!   |
Aug 02 14:29:20.634 INFO kablam! 5 | #![feature(rand)]
Aug 02 14:29:20.634 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:29:20.634 INFO kablam! 
Aug 02 14:29:20.635 INFO kablam! error: aborting due to 3 previous errors
Aug 02 14:29:20.635 INFO kablam! 
Aug 02 14:29:20.635 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:29:20.643 INFO kablam! error: Could not compile `avl_tree`.
Aug 02 14:29:20.644 INFO kablam! 
Aug 02 14:29:20.644 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 14:29:20.645 INFO kablam! su: No module specific data is present
Aug 02 14:29:21.366 INFO running `"docker" "rm" "-f" "caa4cc41eaecab917a80965e0007e56565ff2bcf45de3be02e221224841728cd"`
Aug 02 14:29:21.527 INFO blam! caa4cc41eaecab917a80965e0007e56565ff2bcf45de3be02e221224841728cd