Sep 01 20:45:45.621 INFO checking trie-0.2.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 01 20:45:45.621 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 20:45:45.621 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 20:45:45.793 INFO blam! 2adb68b1ca385e1ebb0b55ad0bfb2e494b3d6c036f0e0605daf1e259f16fe154
Sep 01 20:45:45.795 INFO running `"docker" "start" "-a" "2adb68b1ca385e1ebb0b55ad0bfb2e494b3d6c036f0e0605daf1e259f16fe154"`
Sep 01 20:45:46.497 INFO kablam!     Checking bit-set v0.5.0
Sep 01 20:45:47.101 INFO kablam!     Checking ordered_iter v0.1.1
Sep 01 20:45:47.569 INFO kablam!     Checking trie v0.2.0 (file:///source)
Sep 01 20:45:49.708 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 01 20:45:49.708 INFO kablam!   --> src/lib.rs:13:38
Sep 01 20:45:49.708 INFO kablam!    |
Sep 01 20:45:49.708 INFO kablam! 13 | #![cfg_attr(test, feature(fn_traits, step_by, test, unboxed_closures))]
Sep 01 20:45:49.708 INFO kablam!    |                                      ^^^^^^^
Sep 01 20:45:49.708 INFO kablam! 
Sep 01 20:45:49.776 INFO kablam! error: aborting due to previous error
Sep 01 20:45:49.776 INFO kablam! 
Sep 01 20:45:49.776 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 20:45:49.786 INFO kablam! error: Could not compile `trie`.
Sep 01 20:45:49.786 INFO kablam! 
Sep 01 20:45:49.786 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 20:45:49.788 INFO kablam! su: No module specific data is present
Sep 01 20:45:50.216 INFO running `"docker" "rm" "-f" "2adb68b1ca385e1ebb0b55ad0bfb2e494b3d6c036f0e0605daf1e259f16fe154"`
Sep 01 20:45:50.348 INFO blam! 2adb68b1ca385e1ebb0b55ad0bfb2e494b3d6c036f0e0605daf1e259f16fe154