[INFO] cloning repository https://github.com/tiger101hc/rightfm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tiger101hc/rightfm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiger101hc%2Frightfm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiger101hc%2Frightfm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f662ee488bc60014cded421a229e900266ef7d28
[INFO] checking tiger101hc/rightfm against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiger101hc%2Frightfm" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tiger101hc/rightfm
[INFO] finished tweaking git repo https://github.com/tiger101hc/rightfm
[INFO] tweaked toml for git repo https://github.com/tiger101hc/rightfm written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tiger101hc/rightfm on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tiger101hc/rightfm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60ed1efbdb9144148cb62d52d3d0c202da8147354bcfe6dd56611e5148b5b64f
[INFO] running `Command { std: "docker" "start" "-a" "60ed1efbdb9144148cb62d52d3d0c202da8147354bcfe6dd56611e5148b5b64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60ed1efbdb9144148cb62d52d3d0c202da8147354bcfe6dd56611e5148b5b64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60ed1efbdb9144148cb62d52d3d0c202da8147354bcfe6dd56611e5148b5b64f", kill_on_drop: false }`
[INFO] [stdout] 60ed1efbdb9144148cb62d52d3d0c202da8147354bcfe6dd56611e5148b5b64f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7cae9aa55edf8e26dc529945b8e5041cbaf237915db62ba3b25b31d345cd9ea
[INFO] running `Command { std: "docker" "start" "-a" "a7cae9aa55edf8e26dc529945b8e5041cbaf237915db62ba3b25b31d345cd9ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking allocator-api2 v0.2.16
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling target-features v0.1.6
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]     Checking array-init-cursor v0.2.0
[INFO] [stderr]    Compiling jobserver v0.1.28
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking planus v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling polars-utils v0.38.3
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]     Checking iana-time-zone v0.1.60
[INFO] [stderr]     Checking raw-cpuid v11.0.1
[INFO] [stderr]    Compiling polars-arrow v0.38.3
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking streaming-iterator v0.1.9
[INFO] [stderr]     Checking dyn-clone v1.0.17
[INFO] [stderr]     Checking atoi_simd v0.15.6
[INFO] [stderr]     Checking fast-float v0.2.0
[INFO] [stderr]     Checking foreign_vec v0.1.0
[INFO] [stderr]     Checking ethnum v1.5.0
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling polars-compute v0.38.3
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling polars-core v0.38.3
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling polars-ops v0.38.3
[INFO] [stderr]     Checking xxhash-rust v0.8.10
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]     Checking argminmax v0.6.2
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking now v0.1.3
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking atoi v2.0.0
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling zstd-sys v2.0.10+zstd.1.5.6
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking password-hash v0.4.2
[INFO] [stderr]     Checking streaming-decompression v0.1.2
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]     Checking memmap2 v0.7.1
[INFO] [stderr]    Compiling polars v0.38.3
[INFO] [stderr]     Checking parquet-format-safe v0.2.4
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]     Checking base64 v0.22.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking pbkdf2 v0.11.0
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking rustls-pemfile v2.1.2
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]     Checking ipnet v2.9.0
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking tqdm v0.7.0
[INFO] [stderr]     Checking shellexpand v3.1.0
[INFO] [stderr]     Checking rand_isaac v0.3.0
[INFO] [stderr]     Checking assert_ok v1.0.2
[INFO] [stderr]     Checking shuffle v0.1.7
[INFO] [stderr]     Checking h2 v0.4.4
[INFO] [stderr]    Compiling bytemuck_derive v1.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]    Compiling multiversion-macros v0.7.4
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling nalgebra-macros v0.2.2
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking ndarray-slice v0.3.0
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]     Checking comfy-table v7.1.0
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking safe_arch v0.7.1
[INFO] [stderr]     Checking multiversion v0.7.4
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking wide v0.7.15
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]     Checking zstd v0.11.2+zstd.1.5.2
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking simba v0.7.3
[INFO] [stderr]     Checking simba v0.9.0
[INFO] [stderr]     Checking hyper v1.2.0
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking hyper-util v0.1.3
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking polars-arrow-format v0.1.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking reqwest v0.12.3
[INFO] [stderr]     Checking nalgebra v0.33.2
[INFO] [stderr]     Checking nalgebra v0.30.1
[INFO] [stderr]     Checking polars-error v0.38.3
[INFO] [stderr]     Checking nalgebra-sparse v0.10.0
[INFO] [stderr]     Checking polars-row v0.38.3
[INFO] [stderr]     Checking polars-parquet v0.38.3
[INFO] [stderr]     Checking nshare v0.9.0
[INFO] [stderr]     Checking polars-time v0.38.3
[INFO] [stderr]     Checking polars-io v0.38.3
[INFO] [stderr]     Checking rightfm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rayon::prelude`
[INFO] [stdout]  --> src/rightfm_fast.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rayon::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     num_threads: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 286 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:374:5
[INFO] [stdout]     |
[INFO] [stdout] 374 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:483:5
[INFO] [stdout]     |
[INFO] [stdout] 483 |     num_threads: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:518:5
[INFO] [stdout]     |
[INFO] [stdout] 518 |     num_threads: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:590:5
[INFO] [stdout]     |
[INFO] [stdout] 590 |     num_threads: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item_alpha`
[INFO] [stdout]    --> src/rightfm_fast.rs:706:42
[INFO] [stdout]     |
[INFO] [stdout] 706 | fn regularize(rightfm: &mut FastRightFM, item_alpha: Flt, user_alpha: Flt) {
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_item_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_alpha`
[INFO] [stdout]    --> src/rightfm_fast.rs:706:59
[INFO] [stdout]     |
[INFO] [stdout] 706 | fn regularize(rightfm: &mut FastRightFM, item_alpha: Flt, user_alpha: Flt) {
[INFO] [stdout]     |                                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rayon::prelude`
[INFO] [stdout]  --> src/rightfm_fast.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rayon::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compute_representation_par` is never used
[INFO] [stdout]    --> src/rightfm_fast.rs:647:4
[INFO] [stdout]     |
[INFO] [stdout] 647 | fn compute_representation_par(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compute_prediction_from_repr_par` is never used
[INFO] [stdout]    --> src/rightfm_fast.rs:689:4
[INFO] [stdout]     |
[INFO] [stdout] 689 | fn compute_prediction_from_repr_par(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     num_threads: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 286 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/rightfm_fast.rs:374:5
[INFO] [stdout]     |
[INFO] [stdout] 374 |     learning_rate: Flt,
[INFO] [stdout]     |     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:483:5
[INFO] [stdout]     |
[INFO] [stdout] 483 |     num_threads: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:518:5
[INFO] [stdout]     |
[INFO] [stdout] 518 |     num_threads: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_threads`
[INFO] [stdout]    --> src/rightfm_fast.rs:590:5
[INFO] [stdout]     |
[INFO] [stdout] 590 |     num_threads: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item_alpha`
[INFO] [stdout]    --> src/rightfm_fast.rs:706:42
[INFO] [stdout]     |
[INFO] [stdout] 706 | fn regularize(rightfm: &mut FastRightFM, item_alpha: Flt, user_alpha: Flt) {
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_item_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_alpha`
[INFO] [stdout]    --> src/rightfm_fast.rs:706:59
[INFO] [stdout]     |
[INFO] [stdout] 706 | fn regularize(rightfm: &mut FastRightFM, item_alpha: Flt, user_alpha: Flt) {
[INFO] [stdout]     |                                                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compute_representation_par` is never used
[INFO] [stdout]    --> src/rightfm_fast.rs:647:4
[INFO] [stdout]     |
[INFO] [stdout] 647 | fn compute_representation_par(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compute_prediction_from_repr_par` is never used
[INFO] [stdout]    --> src/rightfm_fast.rs:689:4
[INFO] [stdout]     |
[INFO] [stdout] 689 | fn compute_prediction_from_repr_par(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "a7cae9aa55edf8e26dc529945b8e5041cbaf237915db62ba3b25b31d345cd9ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7cae9aa55edf8e26dc529945b8e5041cbaf237915db62ba3b25b31d345cd9ea", kill_on_drop: false }`
[INFO] [stdout] a7cae9aa55edf8e26dc529945b8e5041cbaf237915db62ba3b25b31d345cd9ea