Dec 04 12:07:49.898 INFO checking puma3/distributed_recommender against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 12:07:49.898 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-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 04 12:07:50.237 INFO [stdout] 5c7e292c28a97c86c699c126105cdca8c6219975f592259195949be086fc3e1d
Dec 04 12:07:50.241 INFO running `"docker" "start" "-a" "5c7e292c28a97c86c699c126105cdca8c6219975f592259195949be086fc3e1d"`
Dec 04 12:07:51.399 INFO [stderr] usermod: no changes
Dec 04 12:07:51.767 INFO [stderr]     Checking abomonation v0.4.6
Dec 04 12:07:51.768 INFO [stderr]     Checking utilities v0.1.0 (/source/libs/utilities)
Dec 04 12:07:51.770 INFO [stderr]     Checking distance v0.1.0 (/source/libs/distance)
Dec 04 12:07:51.771 INFO [stderr]     Checking timely_sort v0.1.6
Dec 04 12:07:52.610 INFO [stderr]     Checking database v0.1.0 (/source/libs/database)
Dec 04 12:07:53.147 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 12:07:53.147 INFO [stderr]  --> libs/database/src/lib.rs:4:1
Dec 04 12:07:53.147 INFO [stderr]   |
Dec 04 12:07:53.147 INFO [stderr] 4 | #[macro_use]
Dec 04 12:07:53.147 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 12:07:53.147 INFO [stderr]   |
Dec 04 12:07:53.147 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 12:07:53.147 INFO [stderr] 
Dec 04 12:07:53.315 INFO [stderr] warning: method is never used: `item_based_recommendation`
Dec 04 12:07:53.315 INFO [stderr]    --> libs/database/src/lib.rs:234:5
Dec 04 12:07:53.315 INFO [stderr]     |
Dec 04 12:07:53.315 INFO [stderr] 234 |     fn item_based_recommendation(&self, movie_id: i32) -> Vec<(i32, f32)> {
Dec 04 12:07:53.315 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:07:53.315 INFO [stderr]     |
Dec 04 12:07:53.315 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 04 12:07:53.315 INFO [stderr] 
Dec 04 12:07:53.315 INFO [stderr] warning: method is never used: `highest_rated_movie`
Dec 04 12:07:53.315 INFO [stderr]    --> libs/database/src/lib.rs:250:5
Dec 04 12:07:53.315 INFO [stderr]     |
Dec 04 12:07:53.315 INFO [stderr] 250 |     fn highest_rated_movie(&self, user_id: i32) -> i32 {
Dec 04 12:07:53.315 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:07:53.315 INFO [stderr] 
Dec 04 12:07:54.487 INFO [stderr]     Checking timely_communication v0.1.8
Dec 04 12:07:55.283 INFO [stderr]     Checking timely v0.3.0
Dec 04 12:07:59.159 INFO [stderr]     Checking distributed_recommender v0.1.0 (/source)
Dec 04 12:08:00.435 INFO [stderr] warning: unused import: `timely::dataflow::channels::message::Content`
Dec 04 12:08:00.435 INFO [stderr]   --> src/main.rs:14:5
Dec 04 12:08:00.435 INFO [stderr]    |
Dec 04 12:08:00.435 INFO [stderr] 14 | use timely::dataflow::channels::message::Content;
Dec 04 12:08:00.435 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:08:00.435 INFO [stderr]    |
Dec 04 12:08:00.435 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 12:08:00.435 INFO [stderr] 
Dec 04 12:08:00.523 INFO [stderr] warning: unused variable: `capability`
Dec 04 12:08:00.523 INFO [stderr]   --> src/main.rs:58:59
Dec 04 12:08:00.523 INFO [stderr]    |
Dec 04 12:08:00.523 INFO [stderr] 58 |                  .unary(Pipeline, "user-user_distances", |capability|
Dec 04 12:08:00.523 INFO [stderr]    |                                                           ^^^^^^^^^^ help: consider using `_capability` instead
Dec 04 12:08:00.523 INFO [stderr]    |
Dec 04 12:08:00.523 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 12:08:00.523 INFO [stderr] 
Dec 04 12:08:00.523 INFO [stderr] warning: unused variable: `capability`
Dec 04 12:08:00.523 INFO [stderr]   --> src/main.rs:78:60
Dec 04 12:08:00.523 INFO [stderr]    |
Dec 04 12:08:00.523 INFO [stderr] 78 |                  .unary(Pipeline, "user-based_recommend", |capability|
Dec 04 12:08:00.523 INFO [stderr]    |                                                            ^^^^^^^^^^ help: consider using `_capability` instead
Dec 04 12:08:00.523 INFO [stderr] 
Dec 04 12:08:00.543 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:08:00.543 INFO [stderr]   --> src/main.rs:42:13
Dec 04 12:08:00.543 INFO [stderr]    |
Dec 04 12:08:00.543 INFO [stderr] 42 |         let mut probe = ProbeHandle::new();
Dec 04 12:08:00.543 INFO [stderr]    |             ----^^^^^
Dec 04 12:08:00.543 INFO [stderr]    |             |
Dec 04 12:08:00.543 INFO [stderr]    |             help: remove this `mut`
Dec 04 12:08:00.543 INFO [stderr]    |
Dec 04 12:08:00.543 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 12:08:00.543 INFO [stderr] 
Dec 04 12:08:00.543 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:08:00.543 INFO [stderr]   --> src/main.rs:42:13
Dec 04 12:08:00.543 INFO [stderr]    |
Dec 04 12:08:00.543 INFO [stderr] 42 |         let mut probe = ProbeHandle::new();
Dec 04 12:08:00.543 INFO [stderr]    |             ----^^^^^
Dec 04 12:08:00.543 INFO [stderr]    |             |
Dec 04 12:08:00.543 INFO [stderr]    |             help: remove this `mut`
Dec 04 12:08:00.543 INFO [stderr] 
Dec 04 12:08:00.575 INFO [stderr] warning: unused import: `timely::dataflow::channels::message::Content`
Dec 04 12:08:00.575 INFO [stderr]   --> src/main.rs:14:5
Dec 04 12:08:00.575 INFO [stderr]    |
Dec 04 12:08:00.575 INFO [stderr] 14 | use timely::dataflow::channels::message::Content;
Dec 04 12:08:00.575 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 12:08:00.575 INFO [stderr]    |
Dec 04 12:08:00.575 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 12:08:00.575 INFO [stderr] 
Dec 04 12:08:00.679 INFO [stderr] warning: unused variable: `capability`
Dec 04 12:08:00.679 INFO [stderr]   --> src/main.rs:58:59
Dec 04 12:08:00.679 INFO [stderr]    |
Dec 04 12:08:00.679 INFO [stderr] 58 |                  .unary(Pipeline, "user-user_distances", |capability|
Dec 04 12:08:00.679 INFO [stderr]    |                                                           ^^^^^^^^^^ help: consider using `_capability` instead
Dec 04 12:08:00.679 INFO [stderr]    |
Dec 04 12:08:00.679 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 12:08:00.679 INFO [stderr] 
Dec 04 12:08:00.679 INFO [stderr] warning: unused variable: `capability`
Dec 04 12:08:00.679 INFO [stderr]   --> src/main.rs:78:60
Dec 04 12:08:00.679 INFO [stderr]    |
Dec 04 12:08:00.679 INFO [stderr] 78 |                  .unary(Pipeline, "user-based_recommend", |capability|
Dec 04 12:08:00.679 INFO [stderr]    |                                                            ^^^^^^^^^^ help: consider using `_capability` instead
Dec 04 12:08:00.679 INFO [stderr] 
Dec 04 12:08:00.695 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:08:00.695 INFO [stderr]   --> src/main.rs:42:13
Dec 04 12:08:00.695 INFO [stderr]    |
Dec 04 12:08:00.695 INFO [stderr] 42 |         let mut probe = ProbeHandle::new();
Dec 04 12:08:00.695 INFO [stderr]    |             ----^^^^^
Dec 04 12:08:00.695 INFO [stderr]    |             |
Dec 04 12:08:00.695 INFO [stderr]    |             help: remove this `mut`
Dec 04 12:08:00.695 INFO [stderr]    |
Dec 04 12:08:00.695 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 12:08:00.695 INFO [stderr] 
Dec 04 12:08:00.695 INFO [stderr] warning: variable does not need to be mutable
Dec 04 12:08:00.695 INFO [stderr]   --> src/main.rs:42:13
Dec 04 12:08:00.695 INFO [stderr]    |
Dec 04 12:08:00.695 INFO [stderr] 42 |         let mut probe = ProbeHandle::new();
Dec 04 12:08:00.695 INFO [stderr]    |             ----^^^^^
Dec 04 12:08:00.695 INFO [stderr]    |             |
Dec 04 12:08:00.695 INFO [stderr]    |             help: remove this `mut`
Dec 04 12:08:00.695 INFO [stderr] 
Dec 04 12:08:00.731 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.31s
Dec 04 12:08:00.736 INFO [stderr] su: No module specific data is present
Dec 04 12:08:01.591 INFO running `"docker" "inspect" "5c7e292c28a97c86c699c126105cdca8c6219975f592259195949be086fc3e1d"`
Dec 04 12:08:01.822 INFO running `"docker" "rm" "-f" "5c7e292c28a97c86c699c126105cdca8c6219975f592259195949be086fc3e1d"`
Dec 04 12:08:02.073 INFO [stdout] 5c7e292c28a97c86c699c126105cdca8c6219975f592259195949be086fc3e1d