[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] 56062e74ec6563b86a27f9a67901d31b77b0bdaf
[INFO] testing cdavidr1/algos_in_rust against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdavidr1%2Falgos_in_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/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-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cdavidr1/algos_in_rust on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d4440bb8a62d9a813f057ec84855439b72476543fb03fe112a136e164fbf5b0
[INFO] running `Command { std: "docker" "start" "-a" "2d4440bb8a62d9a813f057ec84855439b72476543fb03fe112a136e164fbf5b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d4440bb8a62d9a813f057ec84855439b72476543fb03fe112a136e164fbf5b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d4440bb8a62d9a813f057ec84855439b72476543fb03fe112a136e164fbf5b0", kill_on_drop: false }`
[INFO] [stdout] 2d4440bb8a62d9a813f057ec84855439b72476543fb03fe112a136e164fbf5b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c72415c86ec6f4e9afcc9e45afb28faa250c9b116f25f2f3f4930da31f2037e
[INFO] running `Command { std: "docker" "start" "-a" "1c72415c86ec6f4e9afcc9e45afb28faa250c9b116f25f2f3f4930da31f2037e", kill_on_drop: false }`
[INFO] [stderr]    Compiling algos_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `elem`
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:62:30
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:62:40
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[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]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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:27:8
[INFO] [stdout]     |
[INFO] [stdout]  23 | / impl<T> PriorityQueue<T>
[INFO] [stdout]  24 | | where
[INFO] [stdout]  25 | |     T: PartialOrd + Hash + Eq + Clone,
[INFO] [stdout]     | |______________________________________- associated items in this implementation
[INFO] [stdout]  26 |   {
[INFO] [stdout]  27 |       fn new() -> Self {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] ...
[INFO] [stdout]  34 |       fn make_p_q(elems: &[T]) -> Self {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  48 |       fn map_add(&mut self, elem: T, index: usize) {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  55 |       fn map_update(&mut self, elem: &T, old: usize, new: usize) {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  62 |       fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout]  63 |
[INFO] [stdout]  64 |       fn sink(&mut self, mut index: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |       fn swim(&mut self, mut index: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |       fn less(&self, i: usize, j: usize) -> bool {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |       fn is_empty(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 104 |       fn clear(&mut self) {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |       fn size(&self) -> usize {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |       fn swap(&mut self, i: usize, j: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |       fn peek(&self) -> Option<&T> {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |       fn poll(&mut self) -> Option<T> {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |       fn remove_at(&mut self, index: usize) -> Option<T> {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |       fn contains(&self, elem: T) -> bool {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |       fn add(&mut self, elem: T) {
[INFO] [stdout]     |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Queue` is never constructed
[INFO] [stdout]  --> src/queue/queue.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Queue<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/queue/queue.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T> Queue<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn enqueue(&mut self, elem: T) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn dequeue(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn peek_option(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn contains(&self, elem: T) -> bool
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn remove(&mut self, index: usize) -> Option<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub 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:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Stack<T> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/stack/stack.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout]  7 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn push(&mut self, elem: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn size(&self) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "1c72415c86ec6f4e9afcc9e45afb28faa250c9b116f25f2f3f4930da31f2037e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c72415c86ec6f4e9afcc9e45afb28faa250c9b116f25f2f3f4930da31f2037e", kill_on_drop: false }`
[INFO] [stdout] 1c72415c86ec6f4e9afcc9e45afb28faa250c9b116f25f2f3f4930da31f2037e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2eba10368def6d079f7ccf84ef0acee806cda77fc579c49011e3c6b48d7dcfa3
[INFO] running `Command { std: "docker" "start" "-a" "2eba10368def6d079f7ccf84ef0acee806cda77fc579c49011e3c6b48d7dcfa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling algos_in_rust v0.1.0 (/opt/rustwide/workdir)
[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: `elem`
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:62:30
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/priority_queue/priority_queue.rs:62:40
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[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]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: multiple associated items are never used
[INFO] [stdout]    --> src/priority_queue/priority_queue.rs:34:8
[INFO] [stdout]     |
[INFO] [stdout]  23 | / impl<T> PriorityQueue<T>
[INFO] [stdout]  24 | | where
[INFO] [stdout]  25 | |     T: PartialOrd + Hash + Eq + Clone,
[INFO] [stdout]     | |______________________________________- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  34 |       fn make_p_q(elems: &[T]) -> Self {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  48 |       fn map_add(&mut self, elem: T, index: usize) {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  55 |       fn map_update(&mut self, elem: &T, old: usize, new: usize) {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  62 |       fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout]  63 |
[INFO] [stdout]  64 |       fn sink(&mut self, mut index: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |       fn swim(&mut self, mut index: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |       fn less(&self, i: usize, j: usize) -> bool {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |       fn is_empty(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |       fn swap(&mut self, i: usize, j: usize) {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |       fn peek(&self) -> Option<&T> {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |       fn poll(&mut self) -> Option<T> {
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |       fn remove_at(&mut self, index: usize) -> Option<T> {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |       fn contains(&self, elem: T) -> bool {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |       fn add(&mut self, 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 0.54s
[INFO] running `Command { std: "docker" "inspect" "2eba10368def6d079f7ccf84ef0acee806cda77fc579c49011e3c6b48d7dcfa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eba10368def6d079f7ccf84ef0acee806cda77fc579c49011e3c6b48d7dcfa3", kill_on_drop: false }`
[INFO] [stdout] 2eba10368def6d079f7ccf84ef0acee806cda77fc579c49011e3c6b48d7dcfa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 284fd13f2b9ad365c4d9b528bf59fc5498967666abc05f31f438912e4ba76734
[INFO] running `Command { std: "docker" "start" "-a" "284fd13f2b9ad365c4d9b528bf59fc5498967666abc05f31f438912e4ba76734", kill_on_drop: false }`
[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: `elem`
[INFO] [stderr]   --> src/priority_queue/priority_queue.rs:62:30
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stderr]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_elem`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/priority_queue/priority_queue.rs:62:40
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stderr]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[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]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: multiple associated items are never used
[INFO] [stderr]    --> src/priority_queue/priority_queue.rs:34:8
[INFO] [stderr]     |
[INFO] [stderr]  23 | / impl<T> PriorityQueue<T>
[INFO] [stderr]  24 | | where
[INFO] [stderr]  25 | |     T: PartialOrd + Hash + Eq + Clone,
[INFO] [stderr]     | |______________________________________- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  34 |       fn make_p_q(elems: &[T]) -> Self {
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  48 |       fn map_add(&mut self, elem: T, index: usize) {
[INFO] [stderr]     |          ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  55 |       fn map_update(&mut self, elem: &T, old: usize, new: usize) {
[INFO] [stderr]     |          ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  62 |       fn map_remove(&mut self, elem: &T, index: usize) {}
[INFO] [stderr]     |          ^^^^^^^^^^
[INFO] [stderr]  63 |
[INFO] [stderr]  64 |       fn sink(&mut self, mut index: usize) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr]  83 |       fn swim(&mut self, mut index: usize) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr]  94 |       fn less(&self, i: usize, j: usize) -> bool {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |       fn is_empty(&self) -> bool {
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |       fn swap(&mut self, i: usize, j: usize) {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 124 |       fn peek(&self) -> Option<&T> {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 132 |       fn poll(&mut self) -> Option<T> {
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 136 |       fn remove_at(&mut self, index: usize) -> Option<T> {
[INFO] [stderr]     |          ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 159 |       fn contains(&self, elem: T) -> bool {
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 163 |       fn add(&mut self, 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 16 warnings (run `cargo fix --bin "algos_in_rust" -p algos_in_rust --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/algos_in_rust-2c8423fc6d3ac069)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test dsu::dsu::tests::create_element ... ok
[INFO] [stdout] test priority_queue::priority_queue::tests::test_clear ... ok
[INFO] [stdout] test fenwick_tree::fenwick_tree::tests::test_create ... ok
[INFO] [stdout] test queue::queue::tests::test_dequeue ... ok
[INFO] [stdout] test queue::queue::tests::test_remove ... ok
[INFO] [stdout] test queue::queue::tests::test_peek ... ok
[INFO] [stdout] test queue::queue::tests::test_create_q ... ok
[INFO] [stdout] test stack::stack::tests::test_not_empty ... ok
[INFO] [stdout] test queue::queue::tests::test_is_empty ... ok
[INFO] [stdout] test stack::stack::tests::test_pop ... ok
[INFO] [stdout] test segment_tree::segment_tree::tests::seg_tree_constructs ... ok
[INFO] [stdout] test stack::stack::tests::test_size ... ok
[INFO] [stdout] test priority_queue::priority_queue::tests::test_works ... ok
[INFO] [stdout] test stack::stack::tests::test_peek ... ok
[INFO] [stdout] test dsu::dsu::tests::merge_two_sets ... FAILED
[INFO] [stdout] test dsu::dsu::tests::find_representative ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- dsu::dsu::tests::merge_two_sets stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dsu::dsu::tests::merge_two_sets' (19) panicked at src/dsu/dsu.rs:55:17:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x61a5de837b92 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x61a5de837b92 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::trace_unsynchronized::<std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x61a5de837b92 - std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x61a5de837b92 - <<std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[c5ed12ab89cc536a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x61a5de84c3fa - <core[c5ed12ab89cc536a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x61a5de84c3fa - core[c5ed12ab89cc536a]::fmt::write
[INFO] [stdout]    6:     0x61a5de83c9c6 - std[716c9a7a72e5c14e]::io::default_write_fmt::<alloc[9c68fdf4f4f29218]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x61a5de83c9c6 - <alloc[9c68fdf4f4f29218]::vec::Vec<u8> as std[716c9a7a72e5c14e]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x61a5de81605f - <std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x61a5de81605f - std[716c9a7a72e5c14e]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x61a5de82fe79 - std[716c9a7a72e5c14e]::panicking::default_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x61a5de7cb77e - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn for<'a, 'b> core[c5ed12ab89cc536a]::ops::function::Fn<(&'a std[716c9a7a72e5c14e]::panic::PanicHookInfo<'b>,), Output = ()> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::Fn<(&std[716c9a7a72e5c14e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x61a5de7cb77e - test[64760d2bdea328cc]::test_main_with_exit_callback::<test[64760d2bdea328cc]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x61a5de830032 - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn for<'a, 'b> core[c5ed12ab89cc536a]::ops::function::Fn<(&'a std[716c9a7a72e5c14e]::panic::PanicHookInfo<'b>,), Output = ()> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::Fn<(&std[716c9a7a72e5c14e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x61a5de830032 - std[716c9a7a72e5c14e]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x61a5de81614a - std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x61a5de80dae9 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_end_short_backtrace::<std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x61a5de816f6d - __rustc[4f0b026143eab78e]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x61a5de84cacc - core[c5ed12ab89cc536a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x61a5de84ca92 - core[c5ed12ab89cc536a]::panicking::panic
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x61a5de7b9bea - algos_in_rust[d49f0f41b804a3c]::dsu::dsu::tests::merge_two_sets
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:55:17
[INFO] [stdout]   21:     0x61a5de7b7277 - algos_in_rust[d49f0f41b804a3c]::dsu::dsu::tests::merge_two_sets::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:54:24
[INFO] [stdout]   22:     0x61a5de7bf7c6 - <algos_in_rust[d49f0f41b804a3c]::dsu::dsu::tests::merge_two_sets::{closure#0} as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x61a5de7bfb2b - <fn() -> core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x61a5de7bfb2b - test[64760d2bdea328cc]::__rust_begin_short_backtrace::<core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>, fn() -> core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x61a5de7cc38a - test[64760d2bdea328cc]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x61a5de7cc38a - <core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x61a5de7cc38a - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>, core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   28:     0x61a5de7cc38a - std[716c9a7a72e5c14e]::panicking::catch_unwind::<core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>, core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   29:     0x61a5de7cc38a - std[716c9a7a72e5c14e]::panic::catch_unwind::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>, core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x61a5de7cc38a - test[64760d2bdea328cc]::run_test_in_process
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x61a5de7cc38a - test[64760d2bdea328cc]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x61a5de7c6854 - test[64760d2bdea328cc]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x61a5de7c6854 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_begin_short_backtrace::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   34:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   35:     0x61a5de7cee82 - <core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   37:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::panicking::catch_unwind::<(), core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   38:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::panic::catch_unwind::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   40:     0x61a5de7cee82 - <std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1} as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x61a5de83743f - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn core[c5ed12ab89cc536a]::ops::function::FnOnce<(), Output = ()> + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   42:     0x61a5de83743f - <std[716c9a7a72e5c14e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   43:     0x7180da56daa4 - <unknown>
[INFO] [stdout]   44:     0x7180da5faa64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dsu::dsu::tests::find_representative stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dsu::dsu::tests::find_representative' (18) panicked at src/dsu/dsu.rs:60:17:
[INFO] [stdout] not yet implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x61a5de837b92 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x61a5de837b92 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::trace_unsynchronized::<std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x61a5de837b92 - std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x61a5de837b92 - <<std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[c5ed12ab89cc536a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x61a5de84c3fa - <core[c5ed12ab89cc536a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x61a5de84c3fa - core[c5ed12ab89cc536a]::fmt::write
[INFO] [stdout]    6:     0x61a5de83c9c6 - std[716c9a7a72e5c14e]::io::default_write_fmt::<alloc[9c68fdf4f4f29218]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x61a5de83c9c6 - <alloc[9c68fdf4f4f29218]::vec::Vec<u8> as std[716c9a7a72e5c14e]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x61a5de81605f - <std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x61a5de81605f - std[716c9a7a72e5c14e]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x61a5de82fe79 - std[716c9a7a72e5c14e]::panicking::default_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x61a5de7cb77e - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn for<'a, 'b> core[c5ed12ab89cc536a]::ops::function::Fn<(&'a std[716c9a7a72e5c14e]::panic::PanicHookInfo<'b>,), Output = ()> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::Fn<(&std[716c9a7a72e5c14e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x61a5de7cb77e - test[64760d2bdea328cc]::test_main_with_exit_callback::<test[64760d2bdea328cc]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x61a5de830032 - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn for<'a, 'b> core[c5ed12ab89cc536a]::ops::function::Fn<(&'a std[716c9a7a72e5c14e]::panic::PanicHookInfo<'b>,), Output = ()> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::Fn<(&std[716c9a7a72e5c14e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x61a5de830032 - std[716c9a7a72e5c14e]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x61a5de81614a - std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x61a5de80dae9 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_end_short_backtrace::<std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x61a5de816f6d - __rustc[4f0b026143eab78e]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x61a5de84cacc - core[c5ed12ab89cc536a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x61a5de84ca92 - core[c5ed12ab89cc536a]::panicking::panic
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x61a5de7b9c0a - algos_in_rust[d49f0f41b804a3c]::dsu::dsu::tests::find_representative
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:60:17
[INFO] [stdout]   21:     0x61a5de7b72a7 - algos_in_rust[d49f0f41b804a3c]::dsu::dsu::tests::find_representative::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dsu/dsu.rs:59:29
[INFO] [stdout]   22:     0x61a5de7bf806 - <algos_in_rust[d49f0f41b804a3c]::dsu::dsu::tests::find_representative::{closure#0} as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x61a5de7bfb2b - <fn() -> core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x61a5de7bfb2b - test[64760d2bdea328cc]::__rust_begin_short_backtrace::<core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>, fn() -> core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x61a5de7cc38a - test[64760d2bdea328cc]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x61a5de7cc38a - <core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x61a5de7cc38a - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>, core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   28:     0x61a5de7cc38a - std[716c9a7a72e5c14e]::panicking::catch_unwind::<core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>, core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   29:     0x61a5de7cc38a - std[716c9a7a72e5c14e]::panic::catch_unwind::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>, core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x61a5de7cc38a - test[64760d2bdea328cc]::run_test_in_process
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x61a5de7cc38a - test[64760d2bdea328cc]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x61a5de7c6854 - test[64760d2bdea328cc]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x61a5de7c6854 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_begin_short_backtrace::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   34:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   35:     0x61a5de7cee82 - <core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   37:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::panicking::catch_unwind::<(), core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   38:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::panic::catch_unwind::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x61a5de7cee82 - std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   40:     0x61a5de7cee82 - <std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1} as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x61a5de83743f - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn core[c5ed12ab89cc536a]::ops::function::FnOnce<(), Output = ()> + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   42:     0x61a5de83743f - <std[716c9a7a72e5c14e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   43:     0x7180da56daa4 - <unknown>
[INFO] [stdout]   44:     0x7180da5faa64 - 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. 14 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin algos_in_rust`
[INFO] running `Command { std: "docker" "inspect" "284fd13f2b9ad365c4d9b528bf59fc5498967666abc05f31f438912e4ba76734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "284fd13f2b9ad365c4d9b528bf59fc5498967666abc05f31f438912e4ba76734", kill_on_drop: false }`
[INFO] [stdout] 284fd13f2b9ad365c4d9b528bf59fc5498967666abc05f31f438912e4ba76734
