Aug 02 00:05:29.359 INFO checking rtrie-0.1.1 against 1.27.2 for lazy_static-1
Aug 02 00:05:29.359 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:05:29.359 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 00:05:29.359 INFO running `"docker" "create" "-v" "/tmp/crater.7nMlejQg4ddu:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 00:05:29.602 INFO blam! 4d5493d4aba3ef3bd2c81831993710faad823969db473d508b019e84dbdbbb37
Aug 02 00:05:29.604 INFO running `"docker" "start" "-a" "4d5493d4aba3ef3bd2c81831993710faad823969db473d508b019e84dbdbbb37"`
Aug 02 00:05:30.790 INFO kablam!     Checking rtrie v0.1.1 (file:///source)
Aug 02 00:05:31.263 INFO kablam! warning: doc comment not used by rustdoc
Aug 02 00:05:31.263 INFO kablam!    --> src/ternary.rs:209:9
Aug 02 00:05:31.263 INFO kablam!     |
Aug 02 00:05:31.263 INFO kablam! 209 |         /// Unwrap the treenode, creating a new node if it was an empty node.
Aug 02 00:05:31.263 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:05:31.264 INFO kablam!     |
Aug 02 00:05:31.264 INFO kablam!     = note: #[warn(unused_doc_comments)] on by default
Aug 02 00:05:31.264 INFO kablam! 
Aug 02 00:05:31.264 INFO kablam! warning: doc comment not used by rustdoc
Aug 02 00:05:31.264 INFO kablam!    --> src/ternary.rs:294:9
Aug 02 00:05:31.264 INFO kablam!     |
Aug 02 00:05:31.264 INFO kablam! 294 |         /// Unwrap the treenode, If the node is None, there is nothing to delete
Aug 02 00:05:31.264 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:05:31.264 INFO kablam! 
Aug 02 00:05:31.542 INFO kablam! warning: doc comment not used by rustdoc
Aug 02 00:05:31.542 INFO kablam!    --> src/ternary.rs:209:9
Aug 02 00:05:31.542 INFO kablam!     |
Aug 02 00:05:31.542 INFO kablam! 209 |         /// Unwrap the treenode, creating a new node if it was an empty node.
Aug 02 00:05:31.542 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:05:31.542 INFO kablam!     |
Aug 02 00:05:31.542 INFO kablam!     = note: #[warn(unused_doc_comments)] on by default
Aug 02 00:05:31.542 INFO kablam! 
Aug 02 00:05:31.543 INFO kablam! warning: doc comment not used by rustdoc
Aug 02 00:05:31.543 INFO kablam!    --> src/ternary.rs:294:9
Aug 02 00:05:31.543 INFO kablam!     |
Aug 02 00:05:31.543 INFO kablam! 294 |         /// Unwrap the treenode, If the node is None, there is nothing to delete
Aug 02 00:05:31.543 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 00:05:31.543 INFO kablam! 
Aug 02 00:05:32.173 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 00:05:32.173 INFO kablam!  --> benches/ternary.rs:1:1
Aug 02 00:05:32.173 INFO kablam!   |
Aug 02 00:05:32.173 INFO kablam! 1 | #![feature(test)]
Aug 02 00:05:32.173 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 00:05:32.173 INFO kablam! 
Aug 02 00:05:32.173 INFO kablam! error: aborting due to previous error
Aug 02 00:05:32.173 INFO kablam! 
Aug 02 00:05:32.173 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 00:05:32.182 INFO kablam! error: Could not compile `rtrie`.
Aug 02 00:05:32.182 INFO kablam! 
Aug 02 00:05:32.182 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 00:05:32.184 INFO kablam! su: No module specific data is present
Aug 02 00:05:33.474 INFO running `"docker" "rm" "-f" "4d5493d4aba3ef3bd2c81831993710faad823969db473d508b019e84dbdbbb37"`
Aug 02 00:05:33.612 INFO blam! 4d5493d4aba3ef3bd2c81831993710faad823969db473d508b019e84dbdbbb37