[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] 5b1cf83ac370cb7b8327f16eac2b14ac2b452863
[INFO] checking fastann/fastann against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastann%2Ffastann" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fastann/fastann on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "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-1/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" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c51ee2f7d30d3e07bc013f6a92955707a264f25fe56e761917ba143c1f04ffcc
[INFO] running `Command { std: "docker" "start" "-a" "c51ee2f7d30d3e07bc013f6a92955707a264f25fe56e761917ba143c1f04ffcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c51ee2f7d30d3e07bc013f6a92955707a264f25fe56e761917ba143c1f04ffcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c51ee2f7d30d3e07bc013f6a92955707a264f25fe56e761917ba143c1f04ffcc", kill_on_drop: false }`
[INFO] [stdout] c51ee2f7d30d3e07bc013f6a92955707a264f25fe56e761917ba143c1f04ffcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3abdd9c035a2af39581d9d4c846adfe972b32b4f00d57b60b16943ba6be1917c
[INFO] running `Command { std: "docker" "start" "-a" "3abdd9c035a2af39581d9d4c846adfe972b32b4f00d57b60b16943ba6be1917c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[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 rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[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: 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 variable: `nodes`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, nodes: &[Node]) {}
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[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 Node) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: &Node, 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: &Node, 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: &Node, 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: &Node, 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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:609:13
[INFO] [stdout]     |
[INFO] [stdout] 609 |         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:660:21
[INFO] [stdout]     |
[INFO] [stdout] 660 |                 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:697:13
[INFO] [stdout]     |
[INFO] [stdout] 697 |         let node = Node::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: 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: 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]) -> Node {
[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 Node, src: &Node) {
[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:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | 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:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn enclidean_distance<T>(vec1: &[T], vec2: &[T]) -> Result<T, &'static str>
[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 node
[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:608:15
[INFO] [stdout]     |
[INFO] [stdout] 608 |         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: `nodes`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, nodes: &[Node]) {}
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[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 Node) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: &Node, 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: &Node, 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: &Node, 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: &Node, 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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:609:13
[INFO] [stdout]     |
[INFO] [stdout] 609 |         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:660:21
[INFO] [stdout]     |
[INFO] [stdout] 660 |                 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:697:13
[INFO] [stdout]     |
[INFO] [stdout] 697 |         let node = Node::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: 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: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/annoy/annoy.rs:612:13
[INFO] [stdout]     |
[INFO] [stdout] 612 |             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: 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]) -> Node {
[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 Node, src: &Node) {
[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: 47 warnings emitted
[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:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | 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:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn enclidean_distance<T>(vec1: &[T], vec2: &[T]) -> Result<T, &'static str>
[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 node
[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:608:15
[INFO] [stdout]     |
[INFO] [stdout] 608 |         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:612:13
[INFO] [stdout]     |
[INFO] [stdout] 612 |             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: 47 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: 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 variable: `nodes`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, nodes: &[Node]) {}
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[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 Node) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: &Node, 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: &Node, 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: &Node, 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: &Node, 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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:609:13
[INFO] [stdout]     |
[INFO] [stdout] 609 |         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:660:21
[INFO] [stdout]     |
[INFO] [stdout] 660 |                 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:697:13
[INFO] [stdout]     |
[INFO] [stdout] 697 |         let node = Node::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: 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: 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]) -> Node {
[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 Node, src: &Node) {
[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: `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: unused variable: `nodes`
[INFO] [stdout]    --> src/annoy/annoy.rs:144:26
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn preprocess(&self, nodes: &[Node]) {}
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_nodes`
[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 Node) {}
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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: &Node, 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: &Node, 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: &Node, 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: &Node, 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:301:25
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn init_node(&self, node: &mut Node) {}
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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:609:13
[INFO] [stdout]     |
[INFO] [stdout] 609 |         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:660:21
[INFO] [stdout]     |
[INFO] [stdout] 660 |                 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: `node`
[INFO] [stdout]    --> src/annoy/annoy.rs:697:13
[INFO] [stdout]     |
[INFO] [stdout] 697 |         let node = Node::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[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 `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         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: 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 node
[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:608:15
[INFO] [stdout]     |
[INFO] [stdout] 608 |         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:612:13
[INFO] [stdout]     |
[INFO] [stdout] 612 |             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: 45 warnings emitted
[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: 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]) -> Node {
[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 Node, src: &Node) {
[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: `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: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         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: 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 node
[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:608:15
[INFO] [stdout]     |
[INFO] [stdout] 608 |         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:612:13
[INFO] [stdout]     |
[INFO] [stdout] 612 |             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: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.01s
[INFO] running `Command { std: "docker" "inspect" "3abdd9c035a2af39581d9d4c846adfe972b32b4f00d57b60b16943ba6be1917c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3abdd9c035a2af39581d9d4c846adfe972b32b4f00d57b60b16943ba6be1917c", kill_on_drop: false }`
[INFO] [stdout] 3abdd9c035a2af39581d9d4c846adfe972b32b4f00d57b60b16943ba6be1917c