Sep 17 15:46:44.540 INFO checking trie-0.2.0 against master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690 for pr-54033
Sep 17 15:46:44.546 INFO running: cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets
Sep 17 15:46:44.547 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54033/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-2/master#cb6d2dfa8923902b0992a1522dc4a45a9d3ba690:/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" "-e" "USER_ID=1000" "-e" "CMD=cargo +cb6d2dfa8923902b0992a1522dc4a45a9d3ba690-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 17 15:46:44.827 INFO blam! 38320a5960a219efe3eebdc60b21160e103ffe35cef564d683f3715c6024f60b
Sep 17 15:46:44.829 INFO running `"docker" "start" "-a" "38320a5960a219efe3eebdc60b21160e103ffe35cef564d683f3715c6024f60b"`
Sep 17 15:46:46.323 INFO kablam! usermod: no changes
Sep 17 15:46:46.414 INFO kablam!     Checking trie v0.2.0 (/source)
Sep 17 15:46:47.895 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 17 15:46:47.895 INFO kablam!   --> src/lib.rs:13:38
Sep 17 15:46:47.895 INFO kablam!    |
Sep 17 15:46:47.895 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Sep 17 15:46:47.895 INFO kablam!    |                                      ^^^^^^^
Sep 17 15:46:47.895 INFO kablam! 
Sep 17 15:46:47.947 INFO kablam! error: aborting due to previous error
Sep 17 15:46:47.947 INFO kablam! 
Sep 17 15:46:47.947 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 17 15:46:47.954 INFO kablam! error: Could not compile `trie`.
Sep 17 15:46:47.954 INFO kablam! 
Sep 17 15:46:47.954 INFO kablam! To learn more, run the command again with --verbose.
Sep 17 15:46:47.955 INFO kablam! su: No module specific data is present
Sep 17 15:46:49.397 INFO running `"docker" "rm" "-f" "38320a5960a219efe3eebdc60b21160e103ffe35cef564d683f3715c6024f60b"`
Sep 17 15:46:49.631 INFO blam! 38320a5960a219efe3eebdc60b21160e103ffe35cef564d683f3715c6024f60b