Sep 21 12:52:12.224 INFO checking blissb-0.1.0 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 12:52:12.224 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 12:52:12.224 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-4/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 12:52:12.497 INFO blam! b1dee761aeda8f2f00aec7704985571e92b848a8694a25114a56936d34e4f09c
Sep 21 12:52:12.498 INFO running `"docker" "start" "-a" "b1dee761aeda8f2f00aec7704985571e92b848a8694a25114a56936d34e4f09c"`
Sep 21 12:52:13.559 INFO kablam! usermod: no changes
Sep 21 12:52:13.706 INFO kablam!     Checking bitpack v0.1.1
Sep 21 12:52:13.924 INFO kablam!     Checking blissb v0.1.0 (/source)
Sep 21 12:52:14.862 INFO kablam! warning: the feature `question_mark` has been stable since 1.13.0 and no longer requires an attribute to enable
Sep 21 12:52:14.862 INFO kablam!  --> src/lib.rs:1:21
Sep 21 12:52:14.862 INFO kablam!   |
Sep 21 12:52:14.862 INFO kablam! 1 | #![feature(step_by, question_mark)]
Sep 21 12:52:14.862 INFO kablam!   |                     ^^^^^^^^^^^^^
Sep 21 12:52:14.862 INFO kablam!   |
Sep 21 12:52:14.862 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 12:52:14.862 INFO kablam! 
Sep 21 12:52:14.862 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 21 12:52:14.862 INFO kablam!  --> src/lib.rs:1:12
Sep 21 12:52:14.862 INFO kablam!   |
Sep 21 12:52:14.862 INFO kablam! 1 | #![feature(step_by, question_mark)]
Sep 21 12:52:14.862 INFO kablam!   |            ^^^^^^^
Sep 21 12:52:14.862 INFO kablam! 
Sep 21 12:52:14.874 INFO kablam! error: aborting due to previous error
Sep 21 12:52:14.874 INFO kablam! 
Sep 21 12:52:14.874 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 12:52:14.877 INFO kablam! error: Could not compile `blissb`.
Sep 21 12:52:14.877 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 21 12:52:14.998 INFO kablam! warning: the feature `question_mark` has been stable since 1.13.0 and no longer requires an attribute to enable
Sep 21 12:52:14.998 INFO kablam!  --> src/lib.rs:1:21
Sep 21 12:52:14.998 INFO kablam!   |
Sep 21 12:52:14.998 INFO kablam! 1 | #![feature(step_by, question_mark)]
Sep 21 12:52:14.998 INFO kablam!   |                     ^^^^^^^^^^^^^
Sep 21 12:52:15.010 INFO kablam!   |
Sep 21 12:52:15.010 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 12:52:15.011 INFO kablam! 
Sep 21 12:52:15.011 INFO kablam! error[E0635]: unknown feature `step_by`
Sep 21 12:52:15.011 INFO kablam!  --> src/lib.rs:1:12
Sep 21 12:52:15.011 INFO kablam!   |
Sep 21 12:52:15.011 INFO kablam! 1 | #![feature(step_by, question_mark)]
Sep 21 12:52:15.011 INFO kablam!   |            ^^^^^^^
Sep 21 12:52:15.011 INFO kablam! 
Sep 21 12:52:15.012 INFO kablam! error: aborting due to previous error
Sep 21 12:52:15.012 INFO kablam! 
Sep 21 12:52:15.013 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 12:52:15.025 INFO kablam! error: Could not compile `blissb`.
Sep 21 12:52:15.025 INFO kablam! 
Sep 21 12:52:15.025 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 12:52:15.026 INFO kablam! su: No module specific data is present
Sep 21 12:52:15.958 INFO running `"docker" "rm" "-f" "b1dee761aeda8f2f00aec7704985571e92b848a8694a25114a56936d34e4f09c"`
Sep 21 12:52:16.081 INFO blam! b1dee761aeda8f2f00aec7704985571e92b848a8694a25114a56936d34e4f09c