Oct 13 00:31:54.375 INFO checking bgmarx/recommender against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 00:31:54.376 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 00:31:54.891 INFO blam! e181e026ef93c33e027806503583f37577f0194c5ad103699c56a9c66fd98d1b
Oct 13 00:31:54.892 INFO running `"docker" "start" "-a" "e181e026ef93c33e027806503583f37577f0194c5ad103699c56a9c66fd98d1b"`
Oct 13 00:31:56.520 INFO kablam! usermod: no changes
Oct 13 00:31:57.012 INFO kablam!    Compiling ndarray v0.11.2
Oct 13 00:31:57.032 INFO kablam!     Checking serde_json v1.0.24
Oct 13 00:31:57.032 INFO kablam!     Checking smallvec v0.5.1
Oct 13 00:31:57.032 INFO kablam!     Checking csv v1.0.0
Oct 13 00:31:57.032 INFO kablam!     Checking bincode v0.9.2
Oct 13 00:31:57.032 INFO kablam!     Checking tokio-reactor v0.1.2
Oct 13 00:31:57.032 INFO kablam!     Checking serde_urlencoded v0.5.2
Oct 13 00:31:57.032 INFO kablam!     Checking rand_core v0.2.1
Oct 13 00:32:01.050 INFO kablam!     Checking tokio-threadpool v0.1.5
Oct 13 00:32:04.149 INFO kablam!     Checking failure v0.1.2
Oct 13 00:32:04.891 INFO kablam!     Checking hibitset v0.5.1
Oct 13 00:32:05.401 INFO kablam!     Checking rand v0.5.4
Oct 13 00:32:06.546 INFO kablam!     Checking tokio-tcp v0.1.0
Oct 13 00:32:10.358 INFO kablam!     Checking tokio-udp v0.1.1
Oct 13 00:32:14.113 INFO kablam!     Checking tokio-fs v0.1.2
Oct 13 00:32:18.568 INFO kablam!     Checking tokio v0.1.7
Oct 13 00:32:22.769 INFO kablam!     Checking tokio-core v0.1.17
Oct 13 00:32:26.963 INFO kablam!     Checking hyper v0.11.27
Oct 13 00:32:26.963 INFO kablam!     Checking tokio-tls v0.1.4
Oct 13 00:32:31.660 INFO kablam!     Checking wyrm v0.9.1
Oct 13 00:32:37.577 INFO kablam!     Checking hyper-tls v0.1.4
Oct 13 00:32:40.152 INFO kablam!     Checking reqwest v0.8.7
Oct 13 00:32:43.866 INFO kablam!     Checking sbr v0.4.0
Oct 13 00:32:50.388 INFO kablam!     Checking goodbooks-recommender v0.1.0 (/source)
Oct 13 00:32:57.140 INFO kablam! warning: unused variable: `title_to_id`
Oct 13 00:32:57.140 INFO kablam!    --> src/main.rs:226:10
Oct 13 00:32:57.140 INFO kablam!     |
Oct 13 00:32:57.140 INFO kablam! 226 |          title_to_id) = deserialize_books(books_path).unwrap();
Oct 13 00:32:57.140 INFO kablam!     |          ^^^^^^^^^^^ help: consider using `_title_to_id` instead
Oct 13 00:32:57.140 INFO kablam!     |
Oct 13 00:32:57.140 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 13 00:32:57.140 INFO kablam! 
Oct 13 00:32:57.532 INFO kablam! warning: unused variable: `title_to_id`
Oct 13 00:32:57.532 INFO kablam!    --> src/main.rs:226:10
Oct 13 00:32:57.532 INFO kablam!     |
Oct 13 00:32:57.532 INFO kablam! 226 |          title_to_id) = deserialize_books(books_path).unwrap();
Oct 13 00:32:57.532 INFO kablam!     |          ^^^^^^^^^^^ help: consider using `_title_to_id` instead
Oct 13 00:32:57.532 INFO kablam!     |
Oct 13 00:32:57.532 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 13 00:32:57.532 INFO kablam! 
Oct 13 00:32:57.644 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
Oct 13 00:32:57.670 INFO kablam! su: No module specific data is present
Oct 13 00:32:58.662 INFO running `"docker" "rm" "-f" "e181e026ef93c33e027806503583f37577f0194c5ad103699c56a9c66fd98d1b"`
Oct 13 00:32:59.116 INFO blam! e181e026ef93c33e027806503583f37577f0194c5ad103699c56a9c66fd98d1b