Sep 21 01:32:43.136 INFO checking trie-0.2.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 01:32:43.136 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 01:32:43.136 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-2/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 01:32:43.357 INFO blam! 49d27639b86f7757e247d7ceaf8a9cac6ebcb0ffadfa8253e923e1c97ccf5c24
Sep 21 01:32:43.359 INFO running `"docker" "start" "-a" "49d27639b86f7757e247d7ceaf8a9cac6ebcb0ffadfa8253e923e1c97ccf5c24"`
Sep 21 01:32:44.266 INFO kablam! usermod: no changes
Sep 21 01:32:44.342 INFO kablam!     Checking bit-set v0.5.0
Sep 21 01:32:44.777 INFO kablam!     Checking ordered_iter v0.1.1
Sep 21 01:32:45.134 INFO kablam!     Checking trie v0.2.0 (/source)
Sep 21 01:32:46.722 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 21 01:32:46.722 INFO kablam!   --> src/lib.rs:13:38
Sep 21 01:32:46.722 INFO kablam!    |
Sep 21 01:32:46.722 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Sep 21 01:32:46.722 INFO kablam!    |                                      ^^^^^^^
Sep 21 01:32:46.722 INFO kablam! 
Sep 21 01:32:46.770 INFO kablam! error: aborting due to previous error
Sep 21 01:32:46.770 INFO kablam! 
Sep 21 01:32:46.770 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 01:32:46.777 INFO kablam! error: Could not compile `trie`.
Sep 21 01:32:46.777 INFO kablam! 
Sep 21 01:32:46.777 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 01:32:46.777 INFO kablam! su: No module specific data is present
Sep 21 01:32:47.447 INFO running `"docker" "rm" "-f" "49d27639b86f7757e247d7ceaf8a9cac6ebcb0ffadfa8253e923e1c97ccf5c24"`
Sep 21 01:32:47.608 INFO blam! 49d27639b86f7757e247d7ceaf8a9cac6ebcb0ffadfa8253e923e1c97ccf5c24