[INFO] cloning repository https://github.com/cdavidr1/algos_in_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdavidr1/algos_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdavidr1%2Falgos_in_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdavidr1%2Falgos_in_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83b6618e8aba8f2dd10a71b7e02de42281743a67
[INFO] testing cdavidr1/algos_in_rust against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdavidr1%2Falgos_in_rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cdavidr1/algos_in_rust
[INFO] finished tweaking git repo https://github.com/cdavidr1/algos_in_rust
[INFO] tweaked toml for git repo https://github.com/cdavidr1/algos_in_rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cdavidr1/algos_in_rust on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cdavidr1/algos_in_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7aedeeb56ad0c9ad4fb037bd64a2c7d8af6184f032057c1c76a2e728f6729f73
[INFO] running `Command { std: "docker" "start" "-a" "7aedeeb56ad0c9ad4fb037bd64a2c7d8af6184f032057c1c76a2e728f6729f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aedeeb56ad0c9ad4fb037bd64a2c7d8af6184f032057c1c76a2e728f6729f73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aedeeb56ad0c9ad4fb037bd64a2c7d8af6184f032057c1c76a2e728f6729f73", kill_on_drop: false }`
[INFO] [stdout] 7aedeeb56ad0c9ad4fb037bd64a2c7d8af6184f032057c1c76a2e728f6729f73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df5e1b5300019e3d3c9edff5b31291b86aa3fcb6500bf0de2dc9abe85db2296f
[INFO] running `Command { std: "docker" "start" "-a" "df5e1b5300019e3d3c9edff5b31291b86aa3fcb6500bf0de2dc9abe85db2296f", kill_on_drop: false }`
[INFO] [stderr]    Compiling algos_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn swim(size: usize) {}
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn contains(elem: T) {}
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn add(elem: T) {}
[INFO] [stdout]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dsu` is never constructed
[INFO] [stdout]   --> src/dsu/dsu.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Dsu {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `make_set`, and `find_set` are never used
[INFO] [stdout]   --> src/dsu/dsu.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Dsu {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(size: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn make_set(&mut self, v: i32) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn find_set(&self, v: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FenwickTree` is never constructed
[INFO] [stdout]  --> src/fenwick_tree/fenwick_tree.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct FenwickTree {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `construct_and_build`, `new`, `add`, `range_sum_from_zero`, and `range_sum` are never used
[INFO] [stdout]   --> src/fenwick_tree/fenwick_tree.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl FenwickTree {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout]  6 |     fn construct_and_build(input: &[i32]) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn new(input: &[i32]) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn add(&mut self, mut idx: usize, delta: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn range_sum_from_zero(&self, mut r: usize) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn range_sum(&self, l: usize, r: usize) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/fenwick_tree/fenwick_tree.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]  --> src/graph/edge.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Edge {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/graph/edge.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Edge {
[INFO] [stdout]   | --------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new(start: usize, end: usize, weight: Option<i32>) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]  --> src/graph/graph.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Graph {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/graph/graph.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Graph {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     fn new(is_weighted: bool, is_directed: bool) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn add_vertex(&mut self, data: String) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn add_edge(&mut self, from_id: usize, to_id: usize, _weight: Option<i32>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn remove_edge(&mut self, from_id: usize, to_id: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     fn remove_vertex(&mut self, vertex_id: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn get_vertex_by_value(&self, value: String) -> Option<&Vertex> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn get_vertex(&self, id: usize) -> Option<&Vertex> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn print(self, is_weighted: bool) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/graph/graph.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn main() {}
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vertex` is never constructed
[INFO] [stdout]  --> src/graph/vertex.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Vertex {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_edge`, `remove_edge`, and `get_data` are never used
[INFO] [stdout]   --> src/graph/vertex.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Vertex {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout]  8 |     pub fn new(id: usize, data: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn add_edge(&mut self, end: usize, weight: Option<i32>) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn remove_edge(&mut self, end: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn get_data(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PriorityQueue` is never constructed
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct PriorityQueue<T>
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:28:8
[INFO] [stdout]     |
[INFO] [stdout]  24 | / impl<T> PriorityQueue<T>
[INFO] [stdout]  25 | | where
[INFO] [stdout]  26 | |     T: PartialOrd + Hash + Eq + Clone,
[INFO] [stdout]     | |______________________________________- associated items in this implementation
[INFO] [stdout]  27 |   {
[INFO] [stdout]  28 |       fn new(size: usize) -> Self {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] ...
[INFO] [stdout]  36 |       fn make_p_q(elems: &[T]) -> Self {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |       fn map_add(&mut self, elem: T, index: usize) {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |       fn sink(&mut self, mut index: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  76 |       fn swim(size: usize) {}
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]  77 |
[INFO] [stdout]  78 |       fn less(&self, i: usize, j: usize) -> bool {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 |       fn is_empty() {}
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout]  85 |
[INFO] [stdout]  86 |       fn clear() {}
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]  87 |
[INFO] [stdout]  88 |       fn size(&self) -> usize {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |       fn swap(&mut self, i: usize, j: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  96 |       fn peek() {}
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]  97 |
[INFO] [stdout]  98 |       fn poll() {}
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]  99 |
[INFO] [stdout] 100 |       fn contains(elem: T) {}
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 101 |
[INFO] [stdout] 102 |       fn add(elem: T) {}
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Queue` is never constructed
[INFO] [stdout]  --> src/queue/queue.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Queue<T> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/queue/queue.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout]  9 |     fn default() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn enqueue(&mut self, elem: T) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn dequeue(&mut self) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn peek(&self) -> &T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn peek_option(&self) -> Option<&T> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn contains(&self, elem: T) -> bool
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn remove(&mut self, index: usize) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/segment_tree/segment_tree.rs:199:4
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn main() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Max`, `Sum`, `GCD`, `LCM`, and `Zeros` are never constructed
[INFO] [stdout]  --> src/segment_tree/segment_tree.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub enum Function {
[INFO] [stdout]   |              -------- variants in this enum
[INFO] [stdout] 4 |         Max,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 5 |         Min,
[INFO] [stdout] 6 |         Sum,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 7 |         GCD,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 8 |         LCM,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 9 |         Zeros,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Function` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_power_of_two` is never used
[INFO] [stdout]   --> src/segment_tree/segment_tree.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_power_of_two(n: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `update`, `update_helper`, `print_tree_structure`, and `find_kth_zero` are never used
[INFO] [stdout]    --> src/segment_tree/segment_tree.rs:94:16
[INFO] [stdout]     |
[INFO] [stdout]  37 |     impl SegmentTree {
[INFO] [stdout]     |     ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  94 |         pub fn update(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  98 |         fn update_helper(
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |         pub fn print_tree_structure(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 178 |         fn find_kth_zero(&self, v: usize, left: usize, right: usize, k: i32) -> Option<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stack` is never constructed
[INFO] [stdout]  --> src/stack/stack.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Stack<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `default`, `push`, `pop`, `peek`, `size`, and `is_empty` are never used
[INFO] [stdout]   --> src/stack/stack.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout]  6 |     fn default() -> Self {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn push(&mut self, elem: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn size(&self) -> usize {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "df5e1b5300019e3d3c9edff5b31291b86aa3fcb6500bf0de2dc9abe85db2296f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df5e1b5300019e3d3c9edff5b31291b86aa3fcb6500bf0de2dc9abe85db2296f", kill_on_drop: false }`
[INFO] [stdout] df5e1b5300019e3d3c9edff5b31291b86aa3fcb6500bf0de2dc9abe85db2296f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecc4dce0e24a012b10b8f1bd7884dbc57c8e4da69fb00d54cb8fcecaea26eb5
[INFO] running `Command { std: "docker" "start" "-a" "4ecc4dce0e24a012b10b8f1bd7884dbc57c8e4da69fb00d54cb8fcecaea26eb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling algos_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/fenwick_tree/fenwick_tree.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/dsu/dsu.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         assert!(todo!());
[INFO] [stdout]    |         ^^^^^^^^-------^
[INFO] [stdout]    |         |       |
[INFO] [stdout]    |         |       any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/dsu/dsu.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         assert!(todo!());
[INFO] [stdout]    |         ^^^^^^^^-------^
[INFO] [stdout]    |         |       |
[INFO] [stdout]    |         |       any code following this expression is unreachable
[INFO] [stdout]    |         unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn swim(size: usize) {}
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn contains(elem: T) {}
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn add(elem: T) {}
[INFO] [stdout]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/queue/queue.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut q = Queue::default();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/queue/queue.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let mut c = create_q();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/queue/queue.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut c = create_q();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FenwickTree` is never constructed
[INFO] [stdout]  --> src/fenwick_tree/fenwick_tree.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct FenwickTree {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `construct_and_build`, `new`, `add`, `range_sum_from_zero`, and `range_sum` are never used
[INFO] [stdout]   --> src/fenwick_tree/fenwick_tree.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl FenwickTree {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout]  6 |     fn construct_and_build(input: &[i32]) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn new(input: &[i32]) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn add(&mut self, mut idx: usize, delta: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn range_sum_from_zero(&self, mut r: usize) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn range_sum(&self, l: usize, r: usize) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/fenwick_tree/fenwick_tree.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]  --> src/graph/edge.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Edge {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/graph/edge.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Edge {
[INFO] [stdout]   | --------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new(start: usize, end: usize, weight: Option<i32>) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]  --> src/graph/graph.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Graph {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/graph/graph.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Graph {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 11 |     fn new(is_weighted: bool, is_directed: bool) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn add_vertex(&mut self, data: String) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn add_edge(&mut self, from_id: usize, to_id: usize, _weight: Option<i32>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn remove_edge(&mut self, from_id: usize, to_id: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     fn remove_vertex(&mut self, vertex_id: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn get_vertex_by_value(&self, value: String) -> Option<&Vertex> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn get_vertex(&self, id: usize) -> Option<&Vertex> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn print(self, is_weighted: bool) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/graph/graph.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn main() {}
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vertex` is never constructed
[INFO] [stdout]  --> src/graph/vertex.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Vertex {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_edge`, `remove_edge`, and `get_data` are never used
[INFO] [stdout]   --> src/graph/vertex.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Vertex {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout]  8 |     pub fn new(id: usize, data: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn add_edge(&mut self, end: usize, weight: Option<i32>) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn remove_edge(&mut self, end: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn get_data(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `heap` and `position_map` are never read
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct PriorityQueue<T>
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     heap: Vec<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     position_map: HashMap<T, BTreeSet<usize>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:36:8
[INFO] [stdout]     |
[INFO] [stdout]  24 | / impl<T> PriorityQueue<T>
[INFO] [stdout]  25 | | where
[INFO] [stdout]  26 | |     T: PartialOrd + Hash + Eq + Clone,
[INFO] [stdout]     | |______________________________________- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  36 |       fn make_p_q(elems: &[T]) -> Self {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |       fn map_add(&mut self, elem: T, index: usize) {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |       fn sink(&mut self, mut index: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  76 |       fn swim(size: usize) {}
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]  77 |
[INFO] [stdout]  78 |       fn less(&self, i: usize, j: usize) -> bool {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 |       fn is_empty() {}
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout]  85 |
[INFO] [stdout]  86 |       fn clear() {}
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]  87 |
[INFO] [stdout]  88 |       fn size(&self) -> usize {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  92 |       fn swap(&mut self, i: usize, j: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  96 |       fn peek() {}
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]  97 |
[INFO] [stdout]  98 |       fn poll() {}
[INFO] [stdout]     |          ^^^^
[INFO] [stdout]  99 |
[INFO] [stdout] 100 |       fn contains(elem: T) {}
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 101 |
[INFO] [stdout] 102 |       fn add(elem: T) {}
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]    --> src/segment_tree/segment_tree.rs:199:4
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn main() {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Sum`, `GCD`, `LCM`, and `Zeros` are never constructed
[INFO] [stdout]  --> src/segment_tree/segment_tree.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub enum Function {
[INFO] [stdout]   |              -------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |         Sum,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 7 |         GCD,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 8 |         LCM,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 9 |         Zeros,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Function` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_power_of_two` is never used
[INFO] [stdout]   --> src/segment_tree/segment_tree.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_power_of_two(n: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `update`, `update_helper`, `print_tree_structure`, and `find_kth_zero` are never used
[INFO] [stdout]    --> src/segment_tree/segment_tree.rs:94:16
[INFO] [stdout]     |
[INFO] [stdout]  37 |     impl SegmentTree {
[INFO] [stdout]     |     ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  94 |         pub fn update(&mut self, index: usize, value: i32) {
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  98 |         fn update_helper(
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |         pub fn print_tree_structure(&self) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 178 |         fn find_kth_zero(&self, v: usize, left: usize, right: usize, k: i32) -> Option<usize> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "4ecc4dce0e24a012b10b8f1bd7884dbc57c8e4da69fb00d54cb8fcecaea26eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecc4dce0e24a012b10b8f1bd7884dbc57c8e4da69fb00d54cb8fcecaea26eb5", kill_on_drop: false }`
[INFO] [stdout] 4ecc4dce0e24a012b10b8f1bd7884dbc57c8e4da69fb00d54cb8fcecaea26eb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8e273cb678279ae98d92ffcfe7422edb3e583086524064ef6cfa1762e422eb59
[INFO] running `Command { std: "docker" "start" "-a" "8e273cb678279ae98d92ffcfe7422edb3e583086524064ef6cfa1762e422eb59", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/fenwick_tree/fenwick_tree.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/dsu/dsu.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         assert!(todo!());
[INFO] [stderr]    |         ^^^^^^^^-------^
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       any code following this expression is unreachable
[INFO] [stderr]    |         unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/dsu/dsu.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         assert!(todo!());
[INFO] [stderr]    |         ^^^^^^^^-------^
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       any code following this expression is unreachable
[INFO] [stderr]    |         unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/priority_queue/priority_queue.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |     fn swim(size: usize) {}
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elem`
[INFO] [stderr]    --> src/priority_queue/priority_queue.rs:100:17
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn contains(elem: T) {}
[INFO] [stderr]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elem`
[INFO] [stderr]    --> src/priority_queue/priority_queue.rs:102:12
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn add(elem: T) {}
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/queue/queue.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let mut q = Queue::default();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/queue/queue.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let mut c = create_q();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/queue/queue.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut c = create_q();
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FenwickTree` is never constructed
[INFO] [stderr]  --> src/fenwick_tree/fenwick_tree.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct FenwickTree {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `construct_and_build`, `new`, `add`, `range_sum_from_zero`, and `range_sum` are never used
[INFO] [stderr]   --> src/fenwick_tree/fenwick_tree.rs:6:8
[INFO] [stderr]    |
[INFO] [stderr]  5 | impl FenwickTree {
[INFO] [stderr]    | ---------------- associated items in this implementation
[INFO] [stderr]  6 |     fn construct_and_build(input: &[i32]) -> Self {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 13 |     fn new(input: &[i32]) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     fn add(&mut self, mut idx: usize, delta: i32) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 26 |     fn range_sum_from_zero(&self, mut r: usize) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |     fn range_sum(&self, l: usize, r: usize) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/fenwick_tree/fenwick_tree.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Edge` is never constructed
[INFO] [stderr]  --> src/graph/edge.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Edge {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> src/graph/edge.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl Edge {
[INFO] [stderr]   | --------- associated function in this implementation
[INFO] [stderr] 7 |     pub fn new(start: usize, end: usize, weight: Option<i32>) -> Self {
[INFO] [stderr]   |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Graph` is never constructed
[INFO] [stderr]  --> src/graph/graph.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Graph {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]   --> src/graph/graph.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl Graph {
[INFO] [stderr]    | ---------- associated items in this implementation
[INFO] [stderr] 11 |     fn new(is_weighted: bool, is_directed: bool) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     fn add_vertex(&mut self, data: String) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 28 |     fn add_edge(&mut self, from_id: usize, to_id: usize, _weight: Option<i32>) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 43 |     fn remove_edge(&mut self, from_id: usize, to_id: usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 60 |     fn remove_vertex(&mut self, vertex_id: usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 70 |     fn get_vertex_by_value(&self, value: String) -> Option<&Vertex> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |     fn get_vertex(&self, id: usize) -> Option<&Vertex> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 76 |     pub fn print(self, is_weighted: bool) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]    --> src/graph/graph.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn main() {}
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Vertex` is never constructed
[INFO] [stderr]  --> src/graph/vertex.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct Vertex {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `add_edge`, `remove_edge`, and `get_data` are never used
[INFO] [stderr]   --> src/graph/vertex.rs:8:12
[INFO] [stderr]    |
[INFO] [stderr]  7 | impl Vertex {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr]  8 |     pub fn new(id: usize, data: String) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 15 |     pub fn add_edge(&mut self, end: usize, weight: Option<i32>) {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 18 |     pub fn remove_edge(&mut self, end: usize) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 21 |     pub fn get_data(&self) -> &str {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `heap` and `position_map` are never read
[INFO] [stderr]   --> src/priority_queue/priority_queue.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct PriorityQueue<T>
[INFO] [stderr]    |        ------------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 20 |     heap: Vec<T>,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 21 |     position_map: HashMap<T, BTreeSet<usize>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]    --> src/priority_queue/priority_queue.rs:36:8
[INFO] [stderr]     |
[INFO] [stderr]  24 | / impl<T> PriorityQueue<T>
[INFO] [stderr]  25 | | where
[INFO] [stderr]  26 | |     T: PartialOrd + Hash + Eq + Clone,
[INFO] [stderr]     | |______________________________________- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  36 |       fn make_p_q(elems: &[T]) -> Self {
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  50 |       fn map_add(&mut self, elem: T, index: usize) {
[INFO] [stderr]     |          ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  57 |       fn sink(&mut self, mut index: usize) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr]  76 |       fn swim(size: usize) {}
[INFO] [stderr]     |          ^^^^
[INFO] [stderr]  77 |
[INFO] [stderr]  78 |       fn less(&self, i: usize, j: usize) -> bool {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr]  84 |       fn is_empty() {}
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr]  85 |
[INFO] [stderr]  86 |       fn clear() {}
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr]  87 |
[INFO] [stderr]  88 |       fn size(&self) -> usize {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr]  92 |       fn swap(&mut self, i: usize, j: usize) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr]  96 |       fn peek() {}
[INFO] [stderr]     |          ^^^^
[INFO] [stderr]  97 |
[INFO] [stderr]  98 |       fn poll() {}
[INFO] [stderr]     |          ^^^^
[INFO] [stderr]  99 |
[INFO] [stderr] 100 |       fn contains(elem: T) {}
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr] 101 |
[INFO] [stderr] 102 |       fn add(elem: T) {}
[INFO] [stderr]     |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]    --> src/segment_tree/segment_tree.rs:199:4
[INFO] [stderr]     |
[INFO] [stderr] 199 | fn main() {
[INFO] [stderr]     |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Sum`, `GCD`, `LCM`, and `Zeros` are never constructed
[INFO] [stderr]  --> src/segment_tree/segment_tree.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     pub enum Function {
[INFO] [stderr]   |              -------- variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 6 |         Sum,
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 7 |         GCD,
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 8 |         LCM,
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 9 |         Zeros,
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Function` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_power_of_two` is never used
[INFO] [stderr]   --> src/segment_tree/segment_tree.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn is_power_of_two(n: usize) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `update`, `update_helper`, `print_tree_structure`, and `find_kth_zero` are never used
[INFO] [stderr]    --> src/segment_tree/segment_tree.rs:94:16
[INFO] [stderr]     |
[INFO] [stderr]  37 |     impl SegmentTree {
[INFO] [stderr]     |     ---------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  94 |         pub fn update(&mut self, index: usize, value: i32) {
[INFO] [stderr]     |                ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  98 |         fn update_helper(
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 163 |         pub fn print_tree_structure(&self) {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 |         fn find_kth_zero(&self, v: usize, left: usize, right: usize, k: i32) -> Option<usize> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `algos_in_rust` (bin "algos_in_rust" test) generated 25 warnings (run `cargo fix --bin "algos_in_rust" -p algos_in_rust --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/algos_in_rust-2c8423fc6d3ac069)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test queue::queue::tests::test_dequeue ... ok
[INFO] [stdout] test segment_tree::segment_tree::tests::seg_tree_constructs ... ok
[INFO] [stdout] test stack::stack::tests::test_not_empty ... ok
[INFO] [stdout] test queue::queue::tests::test_remove ... ok
[INFO] [stdout] test dsu::dsu::tests::create_element ... ok
[INFO] [stdout] test queue::queue::tests::test_create_q ... ok
[INFO] [stdout] test priority_queue::priority_queue::tests::test_works ... ok
[INFO] [stdout] test queue::queue::tests::test_peek ... ok
[INFO] [stdout] test queue::queue::tests::test_is_empty ... ok
[INFO] [stdout] test stack::stack::tests::test_size ... ok
[INFO] [stdout] test stack::stack::tests::test_pop ... ok
[INFO] [stdout] test stack::stack::tests::test_peek ... ok
[INFO] [stdout] test priority_queue::priority_queue::tests::test_create ... ok
[INFO] [stdout] test dsu::dsu::tests::find_representative ... FAILED
[INFO] [stdout] test dsu::dsu::tests::merge_two_sets ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- dsu::dsu::tests::find_representative stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dsu::dsu::tests::find_representative' (25) panicked at src/dsu/dsu.rs:60:17:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5bb452153112 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5bb452153112 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5bb452153112 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5bb452153112 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5bb452162f5f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5bb452162f5f - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5bb452120be3 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5bb452120be3 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5bb45212c982 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5bb45213145f - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5bb4521312f1 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5bb4520f44be - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x5bb4520f44be - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5bb452131a6f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x5bb452131a6f - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5bb452131896 - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x5bb45212cab9 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5bb4521153ad - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5bb45216a740 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5bb45216a71c - core::panicking::panic::h5cbcc2ceb0950681
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5bb4520ca19a - algos_in_rust::dsu::dsu::tests::find_representative::h89c77609f50c3c70
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:60:17
[INFO] [stdout]   21:     0x5bb4520ca1b7 - algos_in_rust::dsu::dsu::tests::find_representative::{{closure}}::h5712ae7a813734da
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:59:29
[INFO] [stdout]   22:     0x5bb4520cbf66 - core::ops::function::FnOnce::call_once::hadf09d073650e0aa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5bb4520f42bb - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5bb4520f42bb - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5bb45210831d - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5bb45210831d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5bb45210831d - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5bb45210831d - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5bb45210831d - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5bb45210831d - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5bb45210831d - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5bb4520e1864 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5bb4520e1864 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x5bb4520e50ba - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   35:     0x5bb4520e50ba - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5bb4520e50ba - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x5bb4520e50ba - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x5bb4520e50ba - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5bb4520e50ba - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   40:     0x5bb4520e50ba - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5bb452127ebf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   42:     0x5bb452127ebf - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   43:     0x766c2b9e2aa4 - <unknown>
[INFO] [stdout]   44:     0x766c2ba6fa64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dsu::dsu::tests::merge_two_sets stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dsu::dsu::tests::merge_two_sets' (26) panicked at src/dsu/dsu.rs:55:17:
[INFO] [stderr] error: test failed, to rerun pass `--bin algos_in_rust`
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5bb452153112 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5bb452153112 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5bb452153112 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5bb452153112 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5bb452162f5f - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5bb452162f5f - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5bb452120be3 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5bb452120be3 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5bb45212c982 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5bb45213145f - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5bb4521312f1 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5bb4520f44be - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x5bb4520f44be - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5bb452131a6f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x5bb452131a6f - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5bb452131896 - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x5bb45212cab9 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5bb4521153ad - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5bb45216a740 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5bb45216a71c - core::panicking::panic::h5cbcc2ceb0950681
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5bb4520ca14a - algos_in_rust::dsu::dsu::tests::merge_two_sets::h51577573dca8f461
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:55:17
[INFO] [stdout]   21:     0x5bb4520ca167 - algos_in_rust::dsu::dsu::tests::merge_two_sets::{{closure}}::ha37f00f07fe555ac
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:54:24
[INFO] [stdout]   22:     0x5bb4520cbdd6 - core::ops::function::FnOnce::call_once::h67357ee5081be1d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5bb4520f42bb - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5bb4520f42bb - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5bb45210831d - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5bb45210831d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5bb45210831d - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5bb45210831d - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5bb45210831d - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5bb45210831d - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5bb45210831d - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5bb4520e1864 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5bb4520e1864 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x5bb4520e50ba - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   35:     0x5bb4520e50ba - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5bb4520e50ba - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x5bb4520e50ba - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x5bb4520e50ba - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5bb4520e50ba - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   40:     0x5bb4520e50ba - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5bb452127ebf - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   42:     0x5bb452127ebf - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   43:     0x766c2b9e2aa4 - <unknown>
[INFO] [stdout]   44:     0x766c2ba6fa64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     dsu::dsu::tests::find_representative
[INFO] [stdout]     dsu::dsu::tests::merge_two_sets
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 13 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8e273cb678279ae98d92ffcfe7422edb3e583086524064ef6cfa1762e422eb59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e273cb678279ae98d92ffcfe7422edb3e583086524064ef6cfa1762e422eb59", kill_on_drop: false }`
[INFO] [stdout] 8e273cb678279ae98d92ffcfe7422edb3e583086524064ef6cfa1762e422eb59
