Dec 14 01:27:17.836 INFO testing bgmarx/recommender against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 01:27:17.836 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 14 01:27:18.303 INFO [stdout] 730289b6029fee423a72db47a5b0b697f26d92202d388e07c8a5e6a0e497702b
Dec 14 01:27:18.308 INFO running `"docker" "start" "-a" "730289b6029fee423a72db47a5b0b697f26d92202d388e07c8a5e6a0e497702b"`
Dec 14 01:27:19.547 INFO [stderr] usermod: no changes
Dec 14 01:27:19.955 INFO [stderr]    Compiling serde v1.0.70
Dec 14 01:27:19.955 INFO [stderr]    Compiling ndarray v0.11.2
Dec 14 01:27:19.955 INFO [stderr]    Compiling memchr v2.0.1
Dec 14 01:27:19.979 INFO [stderr]    Compiling crossbeam-epoch v0.3.1
Dec 14 01:27:19.979 INFO [stderr]    Compiling tokio-reactor v0.1.2
Dec 14 01:27:19.979 INFO [stderr]    Compiling tokio-threadpool v0.1.5
Dec 14 01:27:21.883 INFO [stderr]    Compiling csv-core v0.1.4
Dec 14 01:27:24.466 INFO [stderr]    Compiling crossbeam-deque v0.2.0
Dec 14 01:27:26.827 INFO [stderr]    Compiling tokio-tcp v0.1.0
Dec 14 01:27:26.827 INFO [stderr]    Compiling tokio-udp v0.1.1
Dec 14 01:27:27.939 INFO [stderr]    Compiling rayon-core v1.4.1
Dec 14 01:27:29.491 INFO [stderr]    Compiling tokio-fs v0.1.2
Dec 14 01:27:32.607 INFO [stderr]    Compiling tokio v0.1.7
Dec 14 01:27:33.815 INFO [stderr]    Compiling rayon v1.0.2
Dec 14 01:27:37.409 INFO [stderr]    Compiling tokio-core v0.1.17
Dec 14 01:27:39.617 INFO [stderr]    Compiling hibitset v0.5.1
Dec 14 01:27:42.345 INFO [stderr]    Compiling tokio-tls v0.1.4
Dec 14 01:27:42.345 INFO [stderr]    Compiling hyper v0.11.27
Dec 14 01:27:44.528 INFO [stderr]    Compiling rand_core v0.2.1
Dec 14 01:27:44.528 INFO [stderr]    Compiling smallvec v0.5.1
Dec 14 01:27:44.528 INFO [stderr]    Compiling serde_json v1.0.24
Dec 14 01:27:44.528 INFO [stderr]    Compiling serde_urlencoded v0.5.2
Dec 14 01:27:44.528 INFO [stderr]    Compiling bincode v0.9.2
Dec 14 01:27:46.695 INFO [stderr]    Compiling csv v1.0.0
Dec 14 01:27:49.519 INFO [stderr]    Compiling rand v0.5.4
Dec 14 01:28:06.748 INFO [stderr]    Compiling wyrm v0.9.1
Dec 14 01:28:07.399 INFO [stderr]    Compiling hyper-tls v0.1.4
Dec 14 01:28:10.788 INFO [stderr]    Compiling reqwest v0.8.7
Dec 14 01:28:19.563 INFO [stderr]    Compiling sbr v0.4.0
Dec 14 01:28:28.891 INFO [stderr]    Compiling goodbooks-recommender v0.1.0 (/source)
Dec 14 01:28:33.115 INFO [stderr] warning: unused variable: `title_to_id`
Dec 14 01:28:33.115 INFO [stderr]    --> src/main.rs:226:10
Dec 14 01:28:33.115 INFO [stderr]     |
Dec 14 01:28:33.115 INFO [stderr] 226 |          title_to_id) = deserialize_books(books_path).unwrap();
Dec 14 01:28:33.115 INFO [stderr]     |          ^^^^^^^^^^^ help: consider using `_title_to_id` instead
Dec 14 01:28:33.115 INFO [stderr]     |
Dec 14 01:28:33.115 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 14 01:28:33.115 INFO [stderr] 
Dec 14 01:28:40.931 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
Dec 14 01:28:40.951 INFO [stderr] su: No module specific data is present
Dec 14 01:28:42.159 INFO running `"docker" "inspect" "730289b6029fee423a72db47a5b0b697f26d92202d388e07c8a5e6a0e497702b"`
Dec 14 01:28:42.486 INFO running `"docker" "rm" "-f" "730289b6029fee423a72db47a5b0b697f26d92202d388e07c8a5e6a0e497702b"`
Dec 14 01:28:42.815 INFO [stdout] 730289b6029fee423a72db47a5b0b697f26d92202d388e07c8a5e6a0e497702b
Dec 14 01:28:42.823 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 test --frozen --no-run" "-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 14 01:28:43.199 INFO [stdout] 409a20530fbbf4c0755fc7d39ae8896bc86851decbff105e9cac7b1062f76fec
Dec 14 01:28:43.201 INFO running `"docker" "start" "-a" "409a20530fbbf4c0755fc7d39ae8896bc86851decbff105e9cac7b1062f76fec"`
Dec 14 01:28:45.055 INFO [stderr] usermod: no changes
Dec 14 01:28:45.379 INFO [stderr]    Compiling goodbooks-recommender v0.1.0 (/source)
Dec 14 01:28:50.195 INFO [stderr] warning: unused variable: `title_to_id`
Dec 14 01:28:50.195 INFO [stderr]    --> src/main.rs:226:10
Dec 14 01:28:50.195 INFO [stderr]     |
Dec 14 01:28:50.195 INFO [stderr] 226 |          title_to_id) = deserialize_books(books_path).unwrap();
Dec 14 01:28:50.195 INFO [stderr]     |          ^^^^^^^^^^^ help: consider using `_title_to_id` instead
Dec 14 01:28:50.195 INFO [stderr]     |
Dec 14 01:28:50.195 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 14 01:28:50.195 INFO [stderr] 
Dec 14 01:28:50.912 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.82s
Dec 14 01:28:50.935 INFO [stderr] su: No module specific data is present
Dec 14 01:28:51.820 INFO running `"docker" "inspect" "409a20530fbbf4c0755fc7d39ae8896bc86851decbff105e9cac7b1062f76fec"`
Dec 14 01:28:52.095 INFO running `"docker" "rm" "-f" "409a20530fbbf4c0755fc7d39ae8896bc86851decbff105e9cac7b1062f76fec"`
Dec 14 01:28:52.459 INFO [stdout] 409a20530fbbf4c0755fc7d39ae8896bc86851decbff105e9cac7b1062f76fec
Dec 14 01:28:52.466 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 test --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 14 01:28:52.874 INFO [stdout] 73fd8dec9ff0b677829291a042d1ec511bc3c22cb645ea360c1e45b1f70a4de6
Dec 14 01:28:52.881 INFO running `"docker" "start" "-a" "73fd8dec9ff0b677829291a042d1ec511bc3c22cb645ea360c1e45b1f70a4de6"`
Dec 14 01:28:54.172 INFO [stderr] usermod: no changes
Dec 14 01:28:54.479 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
Dec 14 01:28:54.501 INFO [stderr]      Running /target/debug/deps/goodbooks_recommender-06168a158d6efd46
Dec 14 01:28:54.504 INFO [stdout] 
Dec 14 01:28:54.504 INFO [stdout] running 0 tests
Dec 14 01:28:54.504 INFO [stdout] 
Dec 14 01:28:54.504 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 01:28:54.504 INFO [stdout] 
Dec 14 01:28:54.507 INFO [stderr] su: No module specific data is present
Dec 14 01:28:55.364 INFO running `"docker" "inspect" "73fd8dec9ff0b677829291a042d1ec511bc3c22cb645ea360c1e45b1f70a4de6"`
Dec 14 01:28:55.552 INFO running `"docker" "rm" "-f" "73fd8dec9ff0b677829291a042d1ec511bc3c22cb645ea360c1e45b1f70a4de6"`
Dec 14 01:28:55.879 INFO [stdout] 73fd8dec9ff0b677829291a042d1ec511bc3c22cb645ea360c1e45b1f70a4de6