[INFO] cloning repository https://github.com/fastann/fastann
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fastann/fastann" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastann%2Ffastann", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastann%2Ffastann'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 267f90de24850f559c175da63d0107cfbe66bc0d
[INFO] checking fastann/fastann against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastann%2Ffastann" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fastann/fastann on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fastann/fastann
[INFO] finished tweaking git repo https://github.com/fastann/fastann
[INFO] tweaked toml for git repo https://github.com/fastann/fastann written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/fastann/fastann already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85f636e00638a57172bdf060db80c0fdc8a91f586a384cbae1012169acbadf55
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "85f636e00638a57172bdf060db80c0fdc8a91f586a384cbae1012169acbadf55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85f636e00638a57172bdf060db80c0fdc8a91f586a384cbae1012169acbadf55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f636e00638a57172bdf060db80c0fdc8a91f586a384cbae1012169acbadf55", kill_on_drop: false }`
[INFO] [stdout] 85f636e00638a57172bdf060db80c0fdc8a91f586a384cbae1012169acbadf55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9266abe37c4b29e8572caaa3bde8bfbdde1091ca572ab4d2426320dd5d2bb3f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c9266abe37c4b29e8572caaa3bde8bfbdde1091ca572ab4d2426320dd5d2bb3f", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking fastann v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/annoy/annoy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/hnsw/hnsw.rs:75:15
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while (ret < self._max_level) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/pq/pq.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/annoy/annoy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::calc::manhanttan_distance`
[INFO] [stdout]  --> src/common/node.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::common::calc::manhanttan_distance;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/hnsw/hnsw.rs:75:15
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while (ret < self._max_level) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/pq/pq.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, leaves: &[Leaf]) {}
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn zero_value(&self, src: &mut Leaf) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:20
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:32
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:22
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:34
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distance`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:27
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `margin`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_margin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_nr`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:59
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_nr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/annoy/annoy.rs:315:20
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn save(&self, filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]     |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:28
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:36
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/annoy/annoy.rs:326:9
[INFO] [stdout]     |
[INFO] [stdout] 326 |         idx: i32,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 328 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/annoy/annoy.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |         f: &[f64],
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/annoy/annoy.rs:346:23
[INFO] [stdout]     |
[INFO] [stdout] 346 |     fn verbose(&self, v: bool) {}
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:347:24
[INFO] [stdout]     |
[INFO] [stdout] 347 |     fn get_item(&self, item: f64) -> Result<f64, &'static str> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/annoy/annoy.rs:350:28
[INFO] [stdout]     |
[INFO] [stdout] 350 |     fn set_seed(&mut self, q: i32) {}
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |             Err(e) => return, // do nothing
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:377:28
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn add_item(&mut self, item: i32, w: &[f64], d: D) -> Result<(), &'static str> {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:508:17
[INFO] [stdout]     |
[INFO] [stdout] 508 |             for i in 0..diff {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:552:21
[INFO] [stdout]     |
[INFO] [stdout] 552 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:608:13
[INFO] [stdout]     |
[INFO] [stdout] 608 |         for i in 0..attempt {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:659:21
[INFO] [stdout]     |
[INFO] [stdout] 659 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:696:13
[INFO] [stdout]     |
[INFO] [stdout] 696 |         let leaf = Leaf::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/annoy/random.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn set_seed(n: i32) {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:256:25
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     for k in 0..n_neigh {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |         for i in 0..cur_level {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/pq/pq.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         for i in 0..demension {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/pq/pq.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         for i in 0..n_center {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/pq/pq.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |             for j in 0..demension {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/pq/pq.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         for i in 0..n_center {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `demension`
[INFO] [stdout]    --> src/pq/pq.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         let demension = self._demension;
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_demension`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/pq/pq.rs:301:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |         for i in 0..n_sub {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ----^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hnsw/hnsw.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |         let mut neigh0: Vec<usize> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/annoy/annoy.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new_with_vectors(_v: &[f64]) -> Leaf {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `copy`
[INFO] [stdout]   --> src/annoy/annoy.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn copy(dst: &mut Leaf, src: &Leaf) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `normalize_distances`
[INFO] [stdout]    --> src/annoy/annoy.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn normalize_distances(&self, distance: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pq_initial_value`
[INFO] [stdout]    --> src/annoy/annoy.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn pq_initial_value(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]    --> src/annoy/annoy.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn name(&self) -> &'static str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/annoy/annoy.rs:472:12
[INFO] [stdout]     |
[INFO] [stdout] 472 |     pub fn new(f: usize, d: D) -> AnnoyIndex<D> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_f`
[INFO] [stdout]    --> src/annoy/annoy.rs:484:12
[INFO] [stdout]     |
[INFO] [stdout] 484 |     pub fn get_f(&self) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `V_ARRAY_SIZE`
[INFO] [stdout]  --> src/annoy/def.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const V_ARRAY_SIZE: usize = 65536;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enclidean_distance`
[INFO] [stdout]   --> src/common/calc.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn enclidean_distance<T>(vec1: &[T], vec2: &[T]) -> Result<T, &'static str>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enclidean_distance_range`
[INFO] [stdout]   --> src/common/calc.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn enclidean_distance_range<T>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/common/neighbor.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(idx: usize, distance: f64) -> Neighbor {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Data {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new_with_vectors(demension: i32, val: &[f64]) -> Data {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn distance(&self, data: &Data) -> Result<f64, &str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn new(demension: usize) -> HnswIndexer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_random_level`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn get_random_level(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_neighbors_by_heuristic2`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn get_neighbors_by_heuristic2(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn get_neighbor(&self, id: usize, level: usize) -> &Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn clear_neighbor(&mut self, id: usize, level: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn set_neighbor(&mut self, id: usize, level: usize, pos: usize, neighbor_id: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn push_neighbor(&mut self, id: usize, level: usize, neighbor_id: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_level`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn get_level(&self, id: usize) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `connect_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn connect_neighbor(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_id`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn delete_id(&mut self, id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_deleted`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:283:12
[INFO] [stdout]     |
[INFO] [stdout] 283 |     pub fn is_deleted(&self, id: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:287:12
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_data(&self, id: usize) -> &Vec<f64> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_vec`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:291:12
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn get_distance_from_vec(&self, x: &Vec<f64>, y: &Vec<f64>) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_id`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:295:12
[INFO] [stdout]     |
[INFO] [stdout] 295 |     pub fn get_distance_from_id(&self, x: usize, y: usize) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_laryer`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:300:12
[INFO] [stdout]     |
[INFO] [stdout] 300 |     pub fn search_laryer(
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_laryer_default`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:360:12
[INFO] [stdout]     |
[INFO] [stdout] 360 |     pub fn search_laryer_default(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_knn`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:369:12
[INFO] [stdout]     |
[INFO] [stdout] 369 |     pub fn search_knn(
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_item`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:412:12
[INFO] [stdout]     |
[INFO] [stdout] 412 |     pub fn init_item(&mut self, item: i32, data: &[f64]) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_item`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:430:12
[INFO] [stdout]     |
[INFO] [stdout] 430 |     pub fn add_item(&mut self, item: i32, data: &[f64]) -> Result<usize, &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/pq/pq.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Data {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/pq/pq.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new_with_vectors(demension: i32, val: &[f64]) -> Data {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/pq/pq.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn distance(&self, data: &Data) -> Result<f64, &str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/pq/pq.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new(demension: usize, n_center: usize, _n_epoch: usize) -> KmeansIndexer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_vec`
[INFO] [stdout]   --> src/pq/pq.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn get_distance_from_vec(&self, x: &Vec<f64>, y: &Vec<f64>) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_center`
[INFO] [stdout]   --> src/pq/pq.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn init_center(&mut self, batch_size: usize, batch_data: &Vec<Vec<f64>>) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_center`
[INFO] [stdout]   --> src/pq/pq.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn update_center(
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_data`
[INFO] [stdout]    --> src/pq/pq.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn search_data(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `split_center`
[INFO] [stdout]    --> src/pq/pq.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn split_center(
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `train`
[INFO] [stdout]    --> src/pq/pq.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn train(&mut self, batch_size: usize, batch_data: &Vec<Vec<f64>>) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_range`
[INFO] [stdout]    --> src/pq/pq.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 |     pub fn set_range(&mut self, begin: usize, end: usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/pq/pq.rs:250:12
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn new(demension: usize, n_sub: usize, sub_bits: usize, train_epoch: usize) -> PQIndexer {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_item`
[INFO] [stdout]    --> src/pq/pq.rs:273:12
[INFO] [stdout]     |
[INFO] [stdout] 273 |     pub fn init_item(&mut self, item: i32, data: &[f64]) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_item`
[INFO] [stdout]    --> src/pq/pq.rs:281:12
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub fn add_item(&mut self, item: i32, data: &[f64]) -> Result<usize, &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `train_center`
[INFO] [stdout]    --> src/pq/pq.rs:298:12
[INFO] [stdout]     |
[INFO] [stdout] 298 |     pub fn train_center(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_vec_range`
[INFO] [stdout]    --> src/pq/pq.rs:319:12
[INFO] [stdout]     |
[INFO] [stdout] 319 |     pub fn get_distance_from_vec_range(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_knn_ADC`
[INFO] [stdout]    --> src/pq/pq.rs:329:12
[INFO] [stdout]     |
[INFO] [stdout] 329 |     pub fn search_knn_ADC(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `_K` should have a snake case name
[INFO] [stdout]    --> src/annoy/annoy.rs:363:5
[INFO] [stdout]     |
[INFO] [stdout] 363 |     _K: i32,          // max number of n_descendants to fit into leaf
[INFO] [stdout]     |     ^^ help: convert the identifier to snake case (notice the capitalization): `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `attempt` should have an upper case name
[INFO] [stdout]    --> src/annoy/annoy.rs:607:15
[INFO] [stdout]     |
[INFO] [stdout] 607 |         const attempt: usize = 3;
[INFO] [stdout]     |               ^^^^^^^ help: convert the identifier to upper case: `ATTEMPT`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, leaves: &[Leaf]) {}
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn zero_value(&self, src: &mut Leaf) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:20
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:32
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:22
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:34
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distance`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:27
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `margin`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_margin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_nr`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:59
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_nr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/annoy/annoy.rs:315:20
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn save(&self, filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]     |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:28
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:36
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/annoy/annoy.rs:326:9
[INFO] [stdout]     |
[INFO] [stdout] 326 |         idx: i32,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 328 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/annoy/annoy.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |         f: &[f64],
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/annoy/annoy.rs:346:23
[INFO] [stdout]     |
[INFO] [stdout] 346 |     fn verbose(&self, v: bool) {}
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:347:24
[INFO] [stdout]     |
[INFO] [stdout] 347 |     fn get_item(&self, item: f64) -> Result<f64, &'static str> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/annoy/annoy.rs:350:28
[INFO] [stdout]     |
[INFO] [stdout] 350 |     fn set_seed(&mut self, q: i32) {}
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |             Err(e) => return, // do nothing
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:377:28
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn add_item(&mut self, item: i32, w: &[f64], d: D) -> Result<(), &'static str> {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:508:17
[INFO] [stdout]     |
[INFO] [stdout] 508 |             for i in 0..diff {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:552:21
[INFO] [stdout]     |
[INFO] [stdout] 552 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:608:13
[INFO] [stdout]     |
[INFO] [stdout] 608 |         for i in 0..attempt {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:659:21
[INFO] [stdout]     |
[INFO] [stdout] 659 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:696:13
[INFO] [stdout]     |
[INFO] [stdout] 696 |         let leaf = Leaf::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/annoy/random.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn set_seed(n: i32) {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:256:25
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     for k in 0..n_neigh {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |         for i in 0..cur_level {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/pq/pq.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         for i in 0..demension {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/pq/pq.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         for i in 0..n_center {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/pq/pq.rs:110:17
[INFO] [stdout]     |
[INFO] [stdout] 110 |             for j in 0..demension {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/pq/pq.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         for i in 0..n_center {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `demension`
[INFO] [stdout]    --> src/pq/pq.rs:147:13
[INFO] [stdout]     |
[INFO] [stdout] 147 |         let demension = self._demension;
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_demension`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/pq/pq.rs:301:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |         for i in 0..n_sub {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/annoy/annoy.rs:611:13
[INFO] [stdout]     |
[INFO] [stdout] 611 |             self.distance.create_split(children.as_slice(), &mut m);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         self.get_neighbors_by_heuristic2(top_candidates, n_neigh);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:253:21
[INFO] [stdout]     |
[INFO] [stdout] 253 |                     self.get_neighbors_by_heuristic2(&mut candidates, n_neigh);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `EPS` should have a snake case name
[INFO] [stdout]    --> src/pq/pq.rs:188:21
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let EPS = 1.0 / 1024.0;
[INFO] [stdout]     |                     ^^^ help: convert the identifier to snake case: `eps`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/pq/pq.rs:216:17
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 self.split_center(batch_size, &mut n_assigned_per_center);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/pq/pq.rs:222:17
[INFO] [stdout]     |
[INFO] [stdout] 222 |         assert!(begin >= 0 && end - begin == self._demension);
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `search_knn_ADC` should have a snake case name
[INFO] [stdout]    --> src/pq/pq.rs:329:12
[INFO] [stdout]     |
[INFO] [stdout] 329 |     pub fn search_knn_ADC(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `search_knn_adc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ----^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 104 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hnsw/hnsw.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |         let mut neigh0: Vec<usize> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/annoy/annoy.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new_with_vectors(_v: &[f64]) -> Leaf {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `copy`
[INFO] [stdout]   --> src/annoy/annoy.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn copy(dst: &mut Leaf, src: &Leaf) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `normalize_distances`
[INFO] [stdout]    --> src/annoy/annoy.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn normalize_distances(&self, distance: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pq_initial_value`
[INFO] [stdout]    --> src/annoy/annoy.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn pq_initial_value(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]    --> src/annoy/annoy.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn name(&self) -> &'static str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/annoy/annoy.rs:472:12
[INFO] [stdout]     |
[INFO] [stdout] 472 |     pub fn new(f: usize, d: D) -> AnnoyIndex<D> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_f`
[INFO] [stdout]    --> src/annoy/annoy.rs:484:12
[INFO] [stdout]     |
[INFO] [stdout] 484 |     pub fn get_f(&self) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `V_ARRAY_SIZE`
[INFO] [stdout]  --> src/annoy/def.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const V_ARRAY_SIZE: usize = 65536;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `manhanttan_distance`
[INFO] [stdout]   --> src/common/calc.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn manhanttan_distance<T>(vec1: &[T], vec2: &[T]) -> Result<T, &'static str>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enclidean_distance`
[INFO] [stdout]   --> src/common/calc.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn enclidean_distance<T>(vec1: &[T], vec2: &[T]) -> Result<T, &'static str>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enclidean_distance_range`
[INFO] [stdout]   --> src/common/calc.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn enclidean_distance_range<T>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/common/neighbor.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(idx: usize, distance: f64) -> Neighbor {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/common/node.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(vectors: &[E]) -> Node<E> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/common/node.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn distance<F>(&self, other: &Node<E>, cal: F) -> Result<E, &'static str>
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Data {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new_with_vectors(demension: i32, val: &[f64]) -> Data {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn distance(&self, data: &Data) -> Result<f64, &str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub fn new(demension: usize) -> HnswIndexer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_random_level`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn get_random_level(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_neighbors_by_heuristic2`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn get_neighbors_by_heuristic2(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn get_neighbor(&self, id: usize, level: usize) -> &Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn clear_neighbor(&mut self, id: usize, level: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn set_neighbor(&mut self, id: usize, level: usize, pos: usize, neighbor_id: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn push_neighbor(&mut self, id: usize, level: usize, neighbor_id: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_level`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn get_level(&self, id: usize) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `connect_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn connect_neighbor(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_id`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn delete_id(&mut self, id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_deleted`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:283:12
[INFO] [stdout]     |
[INFO] [stdout] 283 |     pub fn is_deleted(&self, id: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:287:12
[INFO] [stdout]     |
[INFO] [stdout] 287 |     pub fn get_data(&self, id: usize) -> &Vec<f64> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_vec`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:291:12
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn get_distance_from_vec(&self, x: &Vec<f64>, y: &Vec<f64>) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_id`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:295:12
[INFO] [stdout]     |
[INFO] [stdout] 295 |     pub fn get_distance_from_id(&self, x: usize, y: usize) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_laryer`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:300:12
[INFO] [stdout]     |
[INFO] [stdout] 300 |     pub fn search_laryer(
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_laryer_default`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:360:12
[INFO] [stdout]     |
[INFO] [stdout] 360 |     pub fn search_laryer_default(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_knn`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:369:12
[INFO] [stdout]     |
[INFO] [stdout] 369 |     pub fn search_knn(
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_item`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:412:12
[INFO] [stdout]     |
[INFO] [stdout] 412 |     pub fn init_item(&mut self, item: i32, data: &[f64]) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_item`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:430:12
[INFO] [stdout]     |
[INFO] [stdout] 430 |     pub fn add_item(&mut self, item: i32, data: &[f64]) -> Result<usize, &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/pq/pq.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Data {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/pq/pq.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new_with_vectors(demension: i32, val: &[f64]) -> Data {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/pq/pq.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn distance(&self, data: &Data) -> Result<f64, &str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/pq/pq.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new(demension: usize, n_center: usize, _n_epoch: usize) -> KmeansIndexer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_vec`
[INFO] [stdout]   --> src/pq/pq.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn get_distance_from_vec(&self, x: &Vec<f64>, y: &Vec<f64>) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_center`
[INFO] [stdout]   --> src/pq/pq.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn init_center(&mut self, batch_size: usize, batch_data: &Vec<Vec<f64>>) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_center`
[INFO] [stdout]   --> src/pq/pq.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn update_center(
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_data`
[INFO] [stdout]    --> src/pq/pq.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn search_data(
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `split_center`
[INFO] [stdout]    --> src/pq/pq.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn split_center(
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `train`
[INFO] [stdout]    --> src/pq/pq.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 |     pub fn train(&mut self, batch_size: usize, batch_data: &Vec<Vec<f64>>) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_range`
[INFO] [stdout]    --> src/pq/pq.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 |     pub fn set_range(&mut self, begin: usize, end: usize) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/pq/pq.rs:250:12
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub fn new(demension: usize, n_sub: usize, sub_bits: usize, train_epoch: usize) -> PQIndexer {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_item`
[INFO] [stdout]    --> src/pq/pq.rs:273:12
[INFO] [stdout]     |
[INFO] [stdout] 273 |     pub fn init_item(&mut self, item: i32, data: &[f64]) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_item`
[INFO] [stdout]    --> src/pq/pq.rs:281:12
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub fn add_item(&mut self, item: i32, data: &[f64]) -> Result<usize, &'static str> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `train_center`
[INFO] [stdout]    --> src/pq/pq.rs:298:12
[INFO] [stdout]     |
[INFO] [stdout] 298 |     pub fn train_center(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_distance_from_vec_range`
[INFO] [stdout]    --> src/pq/pq.rs:319:12
[INFO] [stdout]     |
[INFO] [stdout] 319 |     pub fn get_distance_from_vec_range(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search_knn_ADC`
[INFO] [stdout]    --> src/pq/pq.rs:329:12
[INFO] [stdout]     |
[INFO] [stdout] 329 |     pub fn search_knn_ADC(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `_K` should have a snake case name
[INFO] [stdout]    --> src/annoy/annoy.rs:363:5
[INFO] [stdout]     |
[INFO] [stdout] 363 |     _K: i32,          // max number of n_descendants to fit into leaf
[INFO] [stdout]     |     ^^ help: convert the identifier to snake case (notice the capitalization): `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `attempt` should have an upper case name
[INFO] [stdout]    --> src/annoy/annoy.rs:607:15
[INFO] [stdout]     |
[INFO] [stdout] 607 |         const attempt: usize = 3;
[INFO] [stdout]     |               ^^^^^^^ help: convert the identifier to upper case: `ATTEMPT`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/annoy/annoy.rs:611:13
[INFO] [stdout]     |
[INFO] [stdout] 611 |             self.distance.create_split(children.as_slice(), &mut m);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         self.get_neighbors_by_heuristic2(top_candidates, n_neigh);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:253:21
[INFO] [stdout]     |
[INFO] [stdout] 253 |                     self.get_neighbors_by_heuristic2(&mut candidates, n_neigh);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `EPS` should have a snake case name
[INFO] [stdout]    --> src/pq/pq.rs:188:21
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let EPS = 1.0 / 1024.0;
[INFO] [stdout]     |                     ^^^ help: convert the identifier to snake case: `eps`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/pq/pq.rs:216:17
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 self.split_center(batch_size, &mut n_assigned_per_center);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/pq/pq.rs:222:17
[INFO] [stdout]     |
[INFO] [stdout] 222 |         assert!(begin >= 0 && end - begin == self._demension);
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `search_knn_ADC` should have a snake case name
[INFO] [stdout]    --> src/pq/pq.rs:329:12
[INFO] [stdout]     |
[INFO] [stdout] 329 |     pub fn search_knn_ADC(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `search_knn_adc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 108 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/annoy/annoy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/hnsw/hnsw.rs:75:15
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while (ret < self._max_level) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/annoy/annoy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::calc::manhanttan_distance`
[INFO] [stdout]  --> src/common/node.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::common::calc::manhanttan_distance;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `while` condition
[INFO] [stdout]   --> src/hnsw/hnsw.rs:75:15
[INFO] [stdout]    |
[INFO] [stdout] 75 |         while (ret < self._max_level) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, leaves: &[Leaf]) {}
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn zero_value(&self, src: &mut Leaf) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:20
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:32
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:22
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:34
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distance`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:27
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `margin`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_margin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_nr`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:59
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_nr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/annoy/annoy.rs:315:20
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn save(&self, filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]     |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:28
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:36
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/annoy/annoy.rs:326:9
[INFO] [stdout]     |
[INFO] [stdout] 326 |         idx: i32,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 328 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/annoy/annoy.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |         f: &[f64],
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/annoy/annoy.rs:346:23
[INFO] [stdout]     |
[INFO] [stdout] 346 |     fn verbose(&self, v: bool) {}
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:347:24
[INFO] [stdout]     |
[INFO] [stdout] 347 |     fn get_item(&self, item: f64) -> Result<f64, &'static str> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/annoy/annoy.rs:350:28
[INFO] [stdout]     |
[INFO] [stdout] 350 |     fn set_seed(&mut self, q: i32) {}
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |             Err(e) => return, // do nothing
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:377:28
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn add_item(&mut self, item: i32, w: &[f64], d: D) -> Result<(), &'static str> {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:508:17
[INFO] [stdout]     |
[INFO] [stdout] 508 |             for i in 0..diff {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:552:21
[INFO] [stdout]     |
[INFO] [stdout] 552 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:608:13
[INFO] [stdout]     |
[INFO] [stdout] 608 |         for i in 0..attempt {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:659:21
[INFO] [stdout]     |
[INFO] [stdout] 659 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:696:13
[INFO] [stdout]     |
[INFO] [stdout] 696 |         let leaf = Leaf::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/annoy/random.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn set_seed(n: i32) {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:256:25
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     for k in 0..n_neigh {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |         for i in 0..cur_level {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, leaves: &[Leaf]) {}
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:146:26
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn zero_value(&self, src: &mut Leaf) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:20
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:172:32
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn side(&self, src: &Leaf, dst: &[f64]) -> bool {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:22
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/annoy/annoy.rs:176:34
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn margin(&self, src: &Leaf, dst: &[f64]) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distance`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:27
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `margin`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_margin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_nr`
[INFO] [stdout]    --> src/annoy/annoy.rs:180:59
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                                           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_nr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `filename`
[INFO] [stdout]    --> src/annoy/annoy.rs:315:20
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn save(&self, filename: &str) -> Result<(), &'static str> {
[INFO] [stdout]     |                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filename`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:28
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/annoy/annoy.rs:321:36
[INFO] [stdout]     |
[INFO] [stdout] 321 |     fn get_distance(&self, i: i32, j: i32) -> Result<f64, &'static str> {
[INFO] [stdout]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/annoy/annoy.rs:326:9
[INFO] [stdout]     |
[INFO] [stdout] 326 |         idx: i32,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:328:9
[INFO] [stdout]     |
[INFO] [stdout] 328 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/annoy/annoy.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 |         f: &[f64],
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/annoy/annoy.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         n: usize,
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `search_k`
[INFO] [stdout]    --> src/annoy/annoy.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         search_k: i32,
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_search_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/annoy/annoy.rs:346:23
[INFO] [stdout]     |
[INFO] [stdout] 346 |     fn verbose(&self, v: bool) {}
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:347:24
[INFO] [stdout]     |
[INFO] [stdout] 347 |     fn get_item(&self, item: f64) -> Result<f64, &'static str> {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/annoy/annoy.rs:350:28
[INFO] [stdout]     |
[INFO] [stdout] 350 |     fn set_seed(&mut self, q: i32) {}
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |             Err(e) => return, // do nothing
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_leaf(&self, leaf: &mut Leaf) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]    --> src/annoy/annoy.rs:377:28
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn add_item(&mut self, item: i32, w: &[f64], d: D) -> Result<(), &'static str> {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:508:17
[INFO] [stdout]     |
[INFO] [stdout] 508 |             for i in 0..diff {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:552:21
[INFO] [stdout]     |
[INFO] [stdout] 552 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/annoy/annoy.rs:608:13
[INFO] [stdout]     |
[INFO] [stdout] 608 |         for i in 0..attempt {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/annoy/annoy.rs:659:21
[INFO] [stdout]     |
[INFO] [stdout] 659 |                 Err(e) => continue,
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/annoy/annoy.rs:696:13
[INFO] [stdout]     |
[INFO] [stdout] 696 |         let leaf = Leaf::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/annoy/random.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn set_seed(n: i32) {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:256:25
[INFO] [stdout]     |
[INFO] [stdout] 256 |                     for k in 0..n_neigh {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:417:13
[INFO] [stdout]     |
[INFO] [stdout] 417 |         for i in 0..cur_level {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ----^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/annoy/annoy.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn pq_distance(&self, distance: f64, mut margin: f64, child_nr: usize) -> f64 {
[INFO] [stdout]     |                                          ----^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hnsw/hnsw.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |         let mut neigh0: Vec<usize> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/annoy/annoy.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new_with_vectors(_v: &[f64]) -> Leaf {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `copy`
[INFO] [stdout]   --> src/annoy/annoy.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn copy(dst: &mut Leaf, src: &Leaf) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `normalize_distances`
[INFO] [stdout]    --> src/annoy/annoy.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn normalize_distances(&self, distance: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pq_initial_value`
[INFO] [stdout]    --> src/annoy/annoy.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn pq_initial_value(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]    --> src/annoy/annoy.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn name(&self) -> &'static str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/annoy/annoy.rs:472:12
[INFO] [stdout]     |
[INFO] [stdout] 472 |     pub fn new(f: usize, d: D) -> AnnoyIndex<D> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_f`
[INFO] [stdout]    --> src/annoy/annoy.rs:484:12
[INFO] [stdout]     |
[INFO] [stdout] 484 |     pub fn get_f(&self) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `V_ARRAY_SIZE`
[INFO] [stdout]  --> src/annoy/def.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const V_ARRAY_SIZE: usize = 65536;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enclidean_distance_range`
[INFO] [stdout]   --> src/common/calc.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn enclidean_distance_range<T>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Data {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new_with_vectors(demension: i32, val: &[f64]) -> Data {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn distance(&self, data: &Data) -> Result<f64, &str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn set_neighbor(&mut self, id: usize, level: usize, pos: usize, neighbor_id: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_level`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn get_level(&self, id: usize) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_id`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn delete_id(&mut self, id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_annoy`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn test_annoy() {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hnsw/hnsw.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |         let mut neigh0: Vec<usize> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/annoy/annoy.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new_with_vectors(_v: &[f64]) -> Leaf {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `copy`
[INFO] [stdout]   --> src/annoy/annoy.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn copy(dst: &mut Leaf, src: &Leaf) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `normalize_distances`
[INFO] [stdout]    --> src/annoy/annoy.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn normalize_distances(&self, distance: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pq_initial_value`
[INFO] [stdout]    --> src/annoy/annoy.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn pq_initial_value(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]    --> src/annoy/annoy.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn name(&self) -> &'static str {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/annoy/annoy.rs:472:12
[INFO] [stdout]     |
[INFO] [stdout] 472 |     pub fn new(f: usize, d: D) -> AnnoyIndex<D> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_f`
[INFO] [stdout]    --> src/annoy/annoy.rs:484:12
[INFO] [stdout]     |
[INFO] [stdout] 484 |     pub fn get_f(&self) -> usize {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `V_ARRAY_SIZE`
[INFO] [stdout]  --> src/annoy/def.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const V_ARRAY_SIZE: usize = 65536;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `manhanttan_distance`
[INFO] [stdout]   --> src/common/calc.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn manhanttan_distance<T>(vec1: &[T], vec2: &[T]) -> Result<T, &'static str>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enclidean_distance_range`
[INFO] [stdout]   --> src/common/calc.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn enclidean_distance_range<T>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/common/node.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(vectors: &[E]) -> Node<E> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/common/node.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn distance<F>(&self, other: &Node<E>, cal: F) -> Result<E, &'static str>
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new() -> Data {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_vectors`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn new_with_vectors(demension: i32, val: &[f64]) -> Data {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `distance`
[INFO] [stdout]   --> src/hnsw/hnsw.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn distance(&self, data: &Data) -> Result<f64, &str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_neighbor`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn set_neighbor(&mut self, id: usize, level: usize, pos: usize, neighbor_id: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_level`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn get_level(&self, id: usize) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_id`
[INFO] [stdout]    --> src/hnsw/hnsw.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn delete_id(&mut self, id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_annoy`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn test_annoy() {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         aix.add_item(i as i32, &f, angular);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         indexer.add_item(i, &f);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `_K` should have a snake case name
[INFO] [stdout]    --> src/annoy/annoy.rs:363:5
[INFO] [stdout]     |
[INFO] [stdout] 363 |     _K: i32,          // max number of n_descendants to fit into leaf
[INFO] [stdout]     |     ^^ help: convert the identifier to snake case (notice the capitalization): `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `attempt` should have an upper case name
[INFO] [stdout]    --> src/annoy/annoy.rs:607:15
[INFO] [stdout]     |
[INFO] [stdout] 607 |         const attempt: usize = 3;
[INFO] [stdout]     |               ^^^^^^^ help: convert the identifier to upper case: `ATTEMPT`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/annoy/annoy.rs:611:13
[INFO] [stdout]     |
[INFO] [stdout] 611 |             self.distance.create_split(children.as_slice(), &mut m);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         self.get_neighbors_by_heuristic2(top_candidates, n_neigh);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:253:21
[INFO] [stdout]     |
[INFO] [stdout] 253 |                     self.get_neighbors_by_heuristic2(&mut candidates, n_neigh);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 61 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         aix.add_item(i as i32, &f, angular);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         indexer.add_item(i, &f);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `_K` should have a snake case name
[INFO] [stdout]    --> src/annoy/annoy.rs:363:5
[INFO] [stdout]     |
[INFO] [stdout] 363 |     _K: i32,          // max number of n_descendants to fit into leaf
[INFO] [stdout]     |     ^^ help: convert the identifier to snake case (notice the capitalization): `_k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `attempt` should have an upper case name
[INFO] [stdout]    --> src/annoy/annoy.rs:607:15
[INFO] [stdout]     |
[INFO] [stdout] 607 |         const attempt: usize = 3;
[INFO] [stdout]     |               ^^^^^^^ help: convert the identifier to upper case: `ATTEMPT`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/annoy/annoy.rs:611:13
[INFO] [stdout]     |
[INFO] [stdout] 611 |             self.distance.create_split(children.as_slice(), &mut m);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         self.get_neighbors_by_heuristic2(top_candidates, n_neigh);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/hnsw/hnsw.rs:253:21
[INFO] [stdout]     |
[INFO] [stdout] 253 |                     self.get_neighbors_by_heuristic2(&mut candidates, n_neigh);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 65 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.81s
[INFO] running `Command { std: "docker" "inspect" "c9266abe37c4b29e8572caaa3bde8bfbdde1091ca572ab4d2426320dd5d2bb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9266abe37c4b29e8572caaa3bde8bfbdde1091ca572ab4d2426320dd5d2bb3f", kill_on_drop: false }`
[INFO] [stdout] c9266abe37c4b29e8572caaa3bde8bfbdde1091ca572ab4d2426320dd5d2bb3f