Dec 19 18:03:47.279 INFO checking derekjw/hearts against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:03:47.279 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/derekjw/hearts:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:03:47.854 INFO [stdout] 8cd55caf707cc2e8ea2bd2674770ac6aaee4e67f55b2a72ce3899f3e9745b9d1
Dec 19 18:03:47.858 INFO running `"docker" "start" "-a" "8cd55caf707cc2e8ea2bd2674770ac6aaee4e67f55b2a72ce3899f3e9745b9d1"`
Dec 19 18:03:50.257 INFO [stderr]     Checking memchr v0.1.11
Dec 19 18:03:50.274 INFO [stderr]     Checking thread-id v2.0.0
Dec 19 18:03:50.640 INFO [stderr]     Checking thread_local v0.2.7
Dec 19 18:03:50.822 INFO [stderr]     Checking aho-corasick v0.5.3
Dec 19 18:03:51.803 INFO [stderr]     Checking regex v0.1.80
Dec 19 18:03:54.072 INFO [stderr]     Checking env_logger v0.3.5
Dec 19 18:03:54.464 INFO [stderr]     Checking hearts v0.0.1 (/opt/crater/workdir)
Dec 19 18:03:54.584 INFO [stderr] error[E0557]: feature has been removed
Dec 19 18:03:54.584 INFO [stderr]  --> src/main.rs:1:12
Dec 19 18:03:54.584 INFO [stderr]   |
Dec 19 18:03:54.584 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 19 18:03:54.584 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 19 18:03:54.584 INFO [stderr]   |
Dec 19 18:03:54.584 INFO [stderr] note: subsumed by `#[proc_macro_derive]`
Dec 19 18:03:54.584 INFO [stderr]  --> src/main.rs:1:12
Dec 19 18:03:54.584 INFO [stderr]   |
Dec 19 18:03:54.584 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 19 18:03:54.584 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 19 18:03:54.584 INFO [stderr] 
Dec 19 18:03:54.612 INFO [stderr] error[E0557]: feature has been removed
Dec 19 18:03:54.612 INFO [stderr]  --> src/main.rs:1:12
Dec 19 18:03:54.612 INFO [stderr]   |
Dec 19 18:03:54.612 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 19 18:03:54.612 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 19 18:03:54.612 INFO [stderr]   |
Dec 19 18:03:54.612 INFO [stderr] note: subsumed by `#[proc_macro_derive]`
Dec 19 18:03:54.612 INFO [stderr]  --> src/main.rs:1:12
Dec 19 18:03:54.612 INFO [stderr]   |
Dec 19 18:03:54.612 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 19 18:03:54.612 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 19 18:03:54.612 INFO [stderr] 
Dec 19 18:03:56.648 INFO [stderr] error: aborting due to previous error
Dec 19 18:03:56.648 INFO [stderr] 
Dec 19 18:03:56.648 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 19 18:03:56.655 INFO [stderr] error: Could not compile `hearts`.
Dec 19 18:03:56.655 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 18:03:56.676 INFO [stderr] error: aborting due to previous error
Dec 19 18:03:56.676 INFO [stderr] 
Dec 19 18:03:56.676 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 19 18:03:56.696 INFO [stderr] error: Could not compile `hearts`.
Dec 19 18:03:56.696 INFO [stderr] 
Dec 19 18:03:56.696 INFO [stderr] To learn more, run the command again with --verbose.
Dec 19 18:03:57.630 INFO running `"docker" "inspect" "8cd55caf707cc2e8ea2bd2674770ac6aaee4e67f55b2a72ce3899f3e9745b9d1"`
Dec 19 18:03:57.952 INFO running `"docker" "rm" "-f" "8cd55caf707cc2e8ea2bd2674770ac6aaee4e67f55b2a72ce3899f3e9745b9d1"`
Dec 19 18:03:58.268 INFO [stdout] 8cd55caf707cc2e8ea2bd2674770ac6aaee4e67f55b2a72ce3899f3e9745b9d1