Dec 13 21:36:37.034 INFO testing derekjw/hearts against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 21:36:37.034 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-3/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 21:36:37.555 INFO [stdout] 1538b91c8c00f5ba0eedf15f7086ddb42e81afc116626708668d4b9d6034ca20
Dec 13 21:36:37.557 INFO running `"docker" "start" "-a" "1538b91c8c00f5ba0eedf15f7086ddb42e81afc116626708668d4b9d6034ca20"`
Dec 13 21:36:38.983 INFO [stderr] usermod: no changes
Dec 13 21:36:39.203 INFO [stderr]    Compiling env_logger v0.3.5
Dec 13 21:36:40.785 INFO [stderr]    Compiling hearts v0.0.1 (/source)
Dec 13 21:36:40.884 INFO [stderr] error[E0557]: feature has been removed
Dec 13 21:36:40.885 INFO [stderr]  --> src/main.rs:1:12
Dec 13 21:36:40.885 INFO [stderr]   |
Dec 13 21:36:40.885 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 13 21:36:40.885 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 13 21:36:40.885 INFO [stderr]   |
Dec 13 21:36:40.885 INFO [stderr] note: subsumed by `#[proc_macro_derive]`
Dec 13 21:36:40.885 INFO [stderr]  --> src/main.rs:1:12
Dec 13 21:36:40.885 INFO [stderr]   |
Dec 13 21:36:40.885 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 13 21:36:40.885 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 13 21:36:40.885 INFO [stderr] 
Dec 13 21:36:45.319 INFO [stderr] error: aborting due to previous error
Dec 13 21:36:45.319 INFO [stderr] 
Dec 13 21:36:45.319 INFO [stderr] For more information about this error, try `rustc --explain E0557`.
Dec 13 21:36:45.336 INFO [stderr] error: Could not compile `hearts`.
Dec 13 21:36:45.336 INFO [stderr] 
Dec 13 21:36:45.336 INFO [stderr] To learn more, run the command again with --verbose.
Dec 13 21:36:45.337 INFO [stderr] su: No module specific data is present
Dec 13 21:36:45.935 INFO running `"docker" "inspect" "1538b91c8c00f5ba0eedf15f7086ddb42e81afc116626708668d4b9d6034ca20"`
Dec 13 21:36:46.107 INFO running `"docker" "rm" "-f" "1538b91c8c00f5ba0eedf15f7086ddb42e81afc116626708668d4b9d6034ca20"`
Dec 13 21:36:46.262 INFO [stdout] 1538b91c8c00f5ba0eedf15f7086ddb42e81afc116626708668d4b9d6034ca20