[INFO] cloning repository https://github.com/tolumide-ng/coding-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tolumide-ng/coding-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93d2bd467620ad7d1d06b0ca8e9c5d4eecdf6e4f
[INFO] checking tolumide-ng/coding-challenge against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcoding-challenge" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tolumide-ng/coding-challenge on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tolumide-ng/coding-challenge
[INFO] finished tweaking git repo https://github.com/tolumide-ng/coding-challenge
[INFO] tweaked toml for git repo https://github.com/tolumide-ng/coding-challenge written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/tolumide-ng/coding-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c799e2439ac5c8307c35546b90d50c1decbf5832e5c17cac383f432eba3f5908
[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" "c799e2439ac5c8307c35546b90d50c1decbf5832e5c17cac383f432eba3f5908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c799e2439ac5c8307c35546b90d50c1decbf5832e5c17cac383f432eba3f5908", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c799e2439ac5c8307c35546b90d50c1decbf5832e5c17cac383f432eba3f5908", kill_on_drop: false }`
[INFO] [stdout] c799e2439ac5c8307c35546b90d50c1decbf5832e5c17cac383f432eba3f5908
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "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] 6d7958363129950c2a6f09a6a2dd714467a3728d04f5a431a065057d87e3e82d
[INFO] running `Command { std: "docker" "start" "-a" "6d7958363129950c2a6f09a6a2dd714467a3728d04f5a431a065057d87e3e82d", kill_on_drop: false }`
[INFO] [stderr]     Checking data_structures v0.1.0 (/opt/rustwide/workdir/data_structures)
[INFO] [stderr]     Checking dynamic_pg v0.1.0 (/opt/rustwide/workdir/dynamic_pg)
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> dynamic_pg/src/dynamic_programming/grid_traveller.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use std::cmp;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> dynamic_pg/src/dynamic_programming/how_sum.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::cell::RefCell;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/linked_lists/dnode.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/doubly_linked_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> data_structures/src/linked_lists/doubly_linked_list.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_rcs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> data_structures/src/linked_lists/linked_rcs.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/linked_lists/node.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/nth_from_last.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::node::{Node, NodeOption};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/linked_lists/nth_from_last.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeRef`
[INFO] [stdout]  --> data_structures/src/linked_lists/reversed_linked_lists.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::{NodeOption, NodeRef};
[INFO] [stdout]   |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> dynamic_pg/src/dynamic_programming/grid_traveller.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use std::cmp;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> dynamic_pg/src/dynamic_programming/how_sum.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use std::cell::RefCell;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/doubly_linked_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_rcs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/nth_from_last.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::node::{Node, NodeOption};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeRef`
[INFO] [stdout]  --> data_structures/src/linked_lists/reversed_linked_lists.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::{NodeOption, NodeRef};
[INFO] [stdout]   |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/doubly_linked_list.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             Some(head) => {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_rcs.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     Some(x) => {}
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_palindrome.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |             let mut original_list = Some(Rc::clone(self.head.as_ref().unwrap()));
[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: `add_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn add_at_index(&mut self, index: i32, val: i32) {
[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: `delete_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     val: i32,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     next: Option<Box<Node>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     head: Option<Box<Node>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_cycle`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn has_cycle(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle_pos.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cycle_position`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cycle_position(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_lists_intercept.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_interception`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn get_interception(&self) -> Option<Rc<Node>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_head`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn add_at_head(&mut self, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_tail`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn add_at_tail(&mut self, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn add_at_index(&mut self, index: i32, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_at_index`
[INFO] [stdout]    --> data_structures/src/linked_lists/single_ll.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new(k: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `en_queue`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn en_queue(&mut self, value: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `de_queue`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn de_queue(&mut self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `front`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn front(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rear`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn rear(&self) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn is_full(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/doubly_linked_list.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             Some(head) => {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_rcs.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     Some(x) => {}
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | /                     vec_safe.iter().map(|val| {
[INFO] [stdout] 42 | |                         if Rc::as_ptr(curr) == Rc::as_ptr(val) {
[INFO] [stdout] 43 | |                             is_intercept = true;
[INFO] [stdout] 44 | |                             intercept = Some(Rc::clone(curr));
[INFO] [stdout] 45 | |                         }
[INFO] [stdout] 46 | |                     });
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking algorithms v0.1.0 (/opt/rustwide/workdir/algorithms)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_palindrome.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |             let mut original_list = Some(Rc::clone(self.head.as_ref().unwrap()));
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn add_at_index(&mut self, index: i32, val: i32) {
[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: `delete_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     val: i32,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     next: Option<Box<Node>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     head: Option<Box<Node>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_cycle`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn has_cycle(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle_pos.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cycle_position`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cycle_position(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_lists_intercept.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_interception`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn get_interception(&self) -> Option<Rc<Node>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> algorithms/src/the_algos/two_sums.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | /                     vec_safe.iter().map(|val| {
[INFO] [stdout] 42 | |                         if Rc::as_ptr(curr) == Rc::as_ptr(val) {
[INFO] [stdout] 43 | |                             is_intercept = true;
[INFO] [stdout] 44 | |                             intercept = Some(Rc::clone(curr));
[INFO] [stdout] 45 | |                         }
[INFO] [stdout] 46 | |                     });
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Node`, `TheNode`
[INFO] [stdout]  --> data_structures/src/binary_tree/in_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, Node, TheNode};
[INFO] [stdout]   |                                                      ^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TheNode`
[INFO] [stdout]  --> data_structures/src/binary_tree/level_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, TheNode};
[INFO] [stdout]   |                                                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/binary_tree/level_order_traversal.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TheNode`
[INFO] [stdout]  --> data_structures/src/binary_tree/lowest_common_ancestor.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, TheNode};
[INFO] [stdout]   |                                                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Node`, `TheNode`
[INFO] [stdout]  --> data_structures/src/binary_tree/post_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, Node, TheNode};
[INFO] [stdout]   |                                                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Node`, `TheNode`
[INFO] [stdout]  --> data_structures/src/binary_tree/pre_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, Node, TheNode};
[INFO] [stdout]   |                                                      ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/binary_tree/pre_order_traversal.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> data_structures/src/binary_tree/priority_queue.rs:250:9
[INFO] [stdout]     |
[INFO] [stdout] 250 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/linked_lists/dnode.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/doubly_linked_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> data_structures/src/linked_lists/doubly_linked_list.rs:267:9
[INFO] [stdout]     |
[INFO] [stdout] 267 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_rcs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> data_structures/src/linked_lists/linked_rcs.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/linked_lists/node.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/nth_from_last.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::node::{Node, NodeOption};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> data_structures/src/linked_lists/nth_from_last.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeRef`
[INFO] [stdout]  --> data_structures/src/linked_lists/reversed_linked_lists.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::{NodeOption, NodeRef};
[INFO] [stdout]   |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/binary_tree/in_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, Node, TheNode};
[INFO] [stdout]   |                                                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/binary_tree/post_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, Node, TheNode};
[INFO] [stdout]   |                                                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/binary_tree/pre_order_traversal.rs:1:54
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::binary_tree::priority_queue::{BinaryHeap, Node, TheNode};
[INFO] [stdout]   |                                                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/doubly_linked_list.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_rcs.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/nth_from_last.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::node::{Node, NodeOption};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NodeRef`
[INFO] [stdout]  --> data_structures/src/linked_lists/reversed_linked_lists.rs:2:31
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::{NodeOption, NodeRef};
[INFO] [stdout]   |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_tree`
[INFO] [stdout]   --> algorithms/src/the_algos/bt_from_list.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn build_tree<T: Debug + Copy + Clone + Eq + PartialEq>(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `recursive_build_tree`
[INFO] [stdout]   --> algorithms/src/the_algos/bt_from_list.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn recursive_build_tree<T: Debug + Copy + Clone + Eq + PartialEq>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_tree`
[INFO] [stdout]   --> algorithms/src/the_algos/bt_from_preorder_inorder.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn build_tree<T: Debug + Copy + Clone + Eq + PartialEq>(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `recursive_build_tree`
[INFO] [stdout]   --> algorithms/src/the_algos/bt_from_preorder_inorder.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn recursive_build_tree<T: Debug + Copy + Clone + Eq + PartialEq>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Yes`
[INFO] [stdout]   --> algorithms/src/the_algos/sherlock_and_the_valid_string.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Yes,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `No`
[INFO] [stdout]   --> algorithms/src/the_algos/sherlock_and_the_valid_string.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     No,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `valid_string`
[INFO] [stdout]   --> algorithms/src/the_algos/sherlock_and_the_valid_string.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn valid_string(input: &str) -> Answer {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `total`
[INFO] [stdout]   --> algorithms/src/the_algos/sunset.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     total: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buildings`
[INFO] [stdout]   --> algorithms/src/the_algos/sunset.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     buildings: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> algorithms/src/the_algos/lowest_common_ancestor.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut root = Some(Rc::new(RefCell::new(root)));
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> data_structures/src/binary_tree/lowest_common_ancestor.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         x: T,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> data_structures/src/binary_tree/lowest_common_ancestor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         y: T,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> data_structures/src/binary_tree/lowest_common_ancestor.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         root: usize,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `curr` is never read
[INFO] [stdout]    --> data_structures/src/binary_tree/serialize_deserialize.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |             let mut curr: TreeNodeType = None;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/doubly_linked_list.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             Some(head) => {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_rcs.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     Some(x) => {}
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_palindrome.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |             let mut original_list = Some(Rc::clone(self.head.as_ref().unwrap()));
[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: `recursive_in_order_traversal`
[INFO] [stdout]  --> data_structures/src/binary_tree/in_order_traversal.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn recursive_in_order_traversal(&self, start: Option<usize>) -> Vec<T> {
[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: `breadth_first_search`
[INFO] [stdout]   --> data_structures/src/binary_tree/level_order_traversal.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn breadth_first_search(&self) -> Vec<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `recusrive_post_order_traversal`
[INFO] [stdout]  --> data_structures/src/binary_tree/post_order_traversal.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn recusrive_post_order_traversal(&self, start: Option<usize>) -> Vec<T> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pre_order_traversal`
[INFO] [stdout]  --> data_structures/src/binary_tree/pre_order_traversal.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn pre_order_traversal(&self) -> Vec<T> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pre_order_recursive`
[INFO] [stdout]   --> data_structures/src/binary_tree/pre_order_traversal.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn pre_order_recursive(&self, start: Option<usize>) -> Vec<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `TreeNodeType`
[INFO] [stdout]  --> data_structures/src/binary_tree/serialize_deserialize.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | type TreeNodeType = Option<Rc<RefCell<TreeNode>>>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Codec`
[INFO] [stdout]   --> data_structures/src/binary_tree/serialize_deserialize.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Codec {}
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> data_structures/src/binary_tree/serialize_deserialize.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `serialize`
[INFO] [stdout]   --> data_structures/src/binary_tree/serialize_deserialize.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn serialize(&self, root: TreeNodeType) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `deserialize`
[INFO] [stdout]   --> data_structures/src/binary_tree/serialize_deserialize.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn deserialize(&self, data: String) -> TreeNodeType {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn add_at_index(&mut self, index: i32, val: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     val: i32,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     next: Option<Box<Node>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     head: Option<Box<Node>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_cycle`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn has_cycle(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle_pos.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cycle_position`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cycle_position(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_lists_intercept.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_interception`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn get_interception(&self) -> Option<Rc<Node>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_head`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn add_at_head(&mut self, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_tail`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn add_at_tail(&mut self, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn get(&self, index: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/single_ll.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn add_at_index(&mut self, index: i32, value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_at_index`
[INFO] [stdout]    --> data_structures/src/linked_lists/single_ll.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new(k: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `en_queue`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn en_queue(&mut self, value: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `de_queue`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn de_queue(&mut self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `front`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn front(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rear`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn rear(&self) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> data_structures/src/queues_stacks/circular_queue.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn is_full(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | /                     vec_safe.iter().map(|val| {
[INFO] [stdout] 42 | |                         if Rc::as_ptr(curr) == Rc::as_ptr(val) {
[INFO] [stdout] 43 | |                             is_intercept = true;
[INFO] [stdout] 44 | |                             intercept = Some(Rc::clone(curr));
[INFO] [stdout] 45 | |                         }
[INFO] [stdout] 46 | |                     });
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 61 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> data_structures/src/binary_tree/lowest_common_ancestor.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         x: T,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> data_structures/src/binary_tree/lowest_common_ancestor.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         y: T,
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root`
[INFO] [stdout]   --> data_structures/src/binary_tree/lowest_common_ancestor.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         root: usize,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_root`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `curr` is never read
[INFO] [stdout]    --> data_structures/src/binary_tree/serialize_deserialize.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |             let mut curr: TreeNodeType = None;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/doubly_linked_list.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             Some(head) => {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_rcs.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                     Some(x) => {}
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_palindrome.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |             let mut original_list = Some(Rc::clone(self.head.as_ref().unwrap()));
[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: `add_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn add_at_index(&mut self, index: i32, val: i32) {
[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: `delete_at_index`
[INFO] [stdout]   --> data_structures/src/linked_lists/leet_singly_ll.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn delete_at_index(&mut self, index: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `val`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     val: i32,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     next: Option<Box<Node>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `head`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     head: Option<Box<Node>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `has_cycle`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn has_cycle(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_cycle_pos.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cycle_position`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_cycle_pos.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn cycle_position(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> data_structures/src/linked_lists/linked_lists_intercept.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LinkedList`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct LinkedList {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_interception`
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn get_interception(&self) -> Option<Rc<Node>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]   --> data_structures/src/linked_lists/linked_lists_intercept.rs:41:21
[INFO] [stdout]    |
[INFO] [stdout] 41 | /                     vec_safe.iter().map(|val| {
[INFO] [stdout] 42 | |                         if Rc::as_ptr(curr) == Rc::as_ptr(val) {
[INFO] [stdout] 43 | |                             is_intercept = true;
[INFO] [stdout] 44 | |                             intercept = Some(Rc::clone(curr));
[INFO] [stdout] 45 | |                         }
[INFO] [stdout] 46 | |                     });
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.68s
[INFO] running `Command { std: "docker" "inspect" "6d7958363129950c2a6f09a6a2dd714467a3728d04f5a431a065057d87e3e82d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d7958363129950c2a6f09a6a2dd714467a3728d04f5a431a065057d87e3e82d", kill_on_drop: false }`
[INFO] [stdout] 6d7958363129950c2a6f09a6a2dd714467a3728d04f5a431a065057d87e3e82d