Sep 10 07:31:34.466 INFO checking trie-0.2.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 07:31:34.466 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 07:31:34.466 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-5/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 07:31:34.688 INFO blam! d31b8aeb5fd95bdece7e6b94ac6dbed5aeb2d35e6972e00752b59391094260de
Sep 10 07:31:34.690 INFO running `"docker" "start" "-a" "d31b8aeb5fd95bdece7e6b94ac6dbed5aeb2d35e6972e00752b59391094260de"`
Sep 10 07:31:35.809 INFO kablam! usermod: no changes
Sep 10 07:31:35.922 INFO kablam!     Checking bit-set v0.5.0
Sep 10 07:31:36.455 INFO kablam!     Checking ordered_iter v0.1.1
Sep 10 07:31:36.862 INFO kablam!     Checking trie v0.2.0 (file:///source)
Sep 10 07:31:38.818 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 10 07:31:38.818 INFO kablam!   --> src/lib.rs:13:38
Sep 10 07:31:38.818 INFO kablam!    |
Sep 10 07:31:38.818 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Sep 10 07:31:38.818 INFO kablam!    |                                      ^^^^^^^
Sep 10 07:31:38.818 INFO kablam! 
Sep 10 07:31:38.866 INFO kablam! error: aborting due to previous error
Sep 10 07:31:38.866 INFO kablam! 
Sep 10 07:31:38.866 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 07:31:38.874 INFO kablam! error: Could not compile `trie`.
Sep 10 07:31:38.874 INFO kablam! 
Sep 10 07:31:38.874 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 07:31:38.886 INFO kablam! su: No module specific data is present
Sep 10 07:31:40.026 INFO running `"docker" "rm" "-f" "d31b8aeb5fd95bdece7e6b94ac6dbed5aeb2d35e6972e00752b59391094260de"`
Sep 10 07:31:40.136 INFO blam! d31b8aeb5fd95bdece7e6b94ac6dbed5aeb2d35e6972e00752b59391094260de