[INFO] cloning repository https://github.com/rkanati/union-find
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rkanati/union-find" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frkanati%2Funion-find", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frkanati%2Funion-find'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2f6002ae785ab28766995c06e684b4a9f7dbf28
[INFO] checking rkanati/union-find against nightly-2024-02-05 for check-cfg-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frkanati%2Funion-find" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rkanati/union-find on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rkanati/union-find
[INFO] finished tweaking git repo https://github.com/rkanati/union-find
[INFO] tweaked toml for git repo https://github.com/rkanati/union-find written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rkanati/union-find 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b16893324ab7aa3b9b8d9ae3d0a06d57d9396da9bb1bc263b28a9d04a6ebe54
[INFO] running `Command { std: "docker" "start" "-a" "5b16893324ab7aa3b9b8d9ae3d0a06d57d9396da9bb1bc263b28a9d04a6ebe54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b16893324ab7aa3b9b8d9ae3d0a06d57d9396da9bb1bc263b28a9d04a6ebe54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b16893324ab7aa3b9b8d9ae3d0a06d57d9396da9bb1bc263b28a9d04a6ebe54", kill_on_drop: false }`
[INFO] [stdout] 5b16893324ab7aa3b9b8d9ae3d0a06d57d9396da9bb1bc263b28a9d04a6ebe54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7a8de82ef5763646c623ef27746f47527810dcd661828da73641e9102628ff9
[INFO] running `Command { std: "docker" "start" "-a" "a7a8de82ef5763646c623ef27746f47527810dcd661828da73641e9102628ff9", kill_on_drop: false }`
[INFO] [stderr]     Checking union-find v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Repr` is never constructed
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct Repr<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl<T> Repr<T> {
[INFO] [stdout]   |     --------------- method in this implementation
[INFO] [stdout] 9 |         fn update(&mut self, mut other: Repr<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]   --> src/main.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     enum Node<T> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `to_repr`, `repr`, `rank`, `update`, and `new_repr` are never used
[INFO] [stdout]   --> src/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     impl<T> Node<T> {
[INFO] [stdout]    |     --------------- associated items in this implementation
[INFO] [stdout] 27 |         fn to_repr(self) -> Repr<T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |         fn repr(&mut self) -> &mut Repr<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |         fn rank(&self) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |         fn update(&mut self, absorb: Node<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         fn new_repr(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UF` is never constructed
[INFO] [stdout]   --> src/main.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub struct UF<T = ()> {
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:70:16
[INFO] [stdout]     |
[INFO] [stdout] 69  |     impl<T> UF<T> {
[INFO] [stdout]     |     ------------- associated items in this implementation
[INFO] [stdout] 70  |         pub fn new() -> UF<T> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74  |         pub fn make_point(&mut self, data: T) -> Point {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |         fn node(&self, index: usize) -> &Node<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |         fn node_mut(&mut self, index: usize) -> &mut Node<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |         fn parent(&self, index: usize) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |         pub fn find(&mut self, mut point: Point) -> Point {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |         pub fn get(&mut self, point: Point) -> &T {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |         pub fn find_and_get(&mut self, point: Point) -> (Point, &T) {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |         pub fn union(&mut self, a: Point, b: Point, merge: impl FnOnce(T, T) -> T) -> Point {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Repr` is never constructed
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct Repr<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl<T> Repr<T> {
[INFO] [stdout]   |     --------------- method in this implementation
[INFO] [stdout] 9 |         fn update(&mut self, mut other: Repr<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]   --> src/main.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     enum Node<T> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `to_repr`, `repr`, `rank`, `update`, and `new_repr` are never used
[INFO] [stdout]   --> src/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     impl<T> Node<T> {
[INFO] [stdout]    |     --------------- associated items in this implementation
[INFO] [stdout] 27 |         fn to_repr(self) -> Repr<T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |         fn repr(&mut self) -> &mut Repr<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |         fn rank(&self) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |         fn update(&mut self, absorb: Node<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         fn new_repr(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UF` is never constructed
[INFO] [stdout]   --> src/main.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub struct UF<T = ()> {
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:70:16
[INFO] [stdout]     |
[INFO] [stdout] 69  |     impl<T> UF<T> {
[INFO] [stdout]     |     ------------- associated items in this implementation
[INFO] [stdout] 70  |         pub fn new() -> UF<T> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74  |         pub fn make_point(&mut self, data: T) -> Point {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |         fn node(&self, index: usize) -> &Node<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |         fn node_mut(&mut self, index: usize) -> &mut Node<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |         fn parent(&self, index: usize) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |         pub fn find(&mut self, mut point: Point) -> Point {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |         pub fn get(&mut self, point: Point) -> &T {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |         pub fn find_and_get(&mut self, point: Point) -> (Point, &T) {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |         pub fn union(&mut self, a: Point, b: Point, merge: impl FnOnce(T, T) -> T) -> Point {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "a7a8de82ef5763646c623ef27746f47527810dcd661828da73641e9102628ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a8de82ef5763646c623ef27746f47527810dcd661828da73641e9102628ff9", kill_on_drop: false }`
[INFO] [stdout] a7a8de82ef5763646c623ef27746f47527810dcd661828da73641e9102628ff9
[INFO] checking rkanati/union-find against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frkanati%2Funion-find" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rkanati/union-find on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rkanati/union-find
[INFO] finished tweaking git repo https://github.com/rkanati/union-find
[INFO] tweaked toml for git repo https://github.com/rkanati/union-find written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rkanati/union-find 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" "+nightly-2024-02-05" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40ed052efb8c4937ccab83e76a825ef5f7ff41f3752aa3ed1a6e9a0a66786f15
[INFO] running `Command { std: "docker" "start" "-a" "40ed052efb8c4937ccab83e76a825ef5f7ff41f3752aa3ed1a6e9a0a66786f15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40ed052efb8c4937ccab83e76a825ef5f7ff41f3752aa3ed1a6e9a0a66786f15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ed052efb8c4937ccab83e76a825ef5f7ff41f3752aa3ed1a6e9a0a66786f15", kill_on_drop: false }`
[INFO] [stdout] 40ed052efb8c4937ccab83e76a825ef5f7ff41f3752aa3ed1a6e9a0a66786f15
[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 -Dunexpected_cfgs" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] a8ead1771a77a646c5a56eeab0e4779873e4a1b5a3a20dc7982c8dc3d3181094
[INFO] running `Command { std: "docker" "start" "-a" "a8ead1771a77a646c5a56eeab0e4779873e4a1b5a3a20dc7982c8dc3d3181094", kill_on_drop: false }`
[INFO] [stderr]     Checking union-find v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition name: `tests`
[INFO] [stdout]    --> src/main.rs:142:11
[INFO] [stdout]     |
[INFO] [stdout] 142 |     #[cfg(tests)]
[INFO] [stdout]     |           ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(tests)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]     = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `tests`
[INFO] [stdout]    --> src/main.rs:142:11
[INFO] [stdout]     |
[INFO] [stdout] 142 |     #[cfg(tests)]
[INFO] [stdout]     |           ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(tests)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]     = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Repr` is never constructed
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct Repr<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl<T> Repr<T> {
[INFO] [stdout]   |     --------------- method in this implementation
[INFO] [stdout] 9 |         fn update(&mut self, mut other: Repr<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]   --> src/main.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     enum Node<T> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `to_repr`, `repr`, `rank`, `update`, and `new_repr` are never used
[INFO] [stdout]   --> src/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     impl<T> Node<T> {
[INFO] [stdout]    |     --------------- associated items in this implementation
[INFO] [stdout] 27 |         fn to_repr(self) -> Repr<T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |         fn repr(&mut self) -> &mut Repr<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |         fn rank(&self) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |         fn update(&mut self, absorb: Node<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         fn new_repr(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UF` is never constructed
[INFO] [stdout]   --> src/main.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub struct UF<T = ()> {
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:70:16
[INFO] [stdout]     |
[INFO] [stdout] 69  |     impl<T> UF<T> {
[INFO] [stdout]     |     ------------- associated items in this implementation
[INFO] [stdout] 70  |         pub fn new() -> UF<T> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74  |         pub fn make_point(&mut self, data: T) -> Point {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |         fn node(&self, index: usize) -> &Node<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |         fn node_mut(&mut self, index: usize) -> &mut Node<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |         fn parent(&self, index: usize) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |         pub fn find(&mut self, mut point: Point) -> Point {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |         pub fn get(&mut self, point: Point) -> &T {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |         pub fn find_and_get(&mut self, point: Point) -> (Point, &T) {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |         pub fn union(&mut self, a: Point, b: Point, merge: impl FnOnce(T, T) -> T) -> Point {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `union-find` (bin "union-find") due to 2 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `Repr` is never constructed
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 |     struct Repr<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]  --> src/main.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl<T> Repr<T> {
[INFO] [stdout]   |     --------------- method in this implementation
[INFO] [stdout] 9 |         fn update(&mut self, mut other: Repr<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]   --> src/main.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     enum Node<T> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `to_repr`, `repr`, `rank`, `update`, and `new_repr` are never used
[INFO] [stdout]   --> src/main.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     impl<T> Node<T> {
[INFO] [stdout]    |     --------------- associated items in this implementation
[INFO] [stdout] 27 |         fn to_repr(self) -> Repr<T> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |         fn repr(&mut self) -> &mut Repr<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |         fn rank(&self) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |         fn update(&mut self, absorb: Node<T>, merge: impl FnOnce(T, T) -> T) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |         fn new_repr(data: T) -> Node<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UF` is never constructed
[INFO] [stdout]   --> src/main.rs:62:16
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub struct UF<T = ()> {
[INFO] [stdout]    |                ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:70:16
[INFO] [stdout]     |
[INFO] [stdout] 69  |     impl<T> UF<T> {
[INFO] [stdout]     |     ------------- associated items in this implementation
[INFO] [stdout] 70  |         pub fn new() -> UF<T> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74  |         pub fn make_point(&mut self, data: T) -> Point {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80  |         fn node(&self, index: usize) -> &Node<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |         fn node_mut(&mut self, index: usize) -> &mut Node<T> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |         fn parent(&self, index: usize) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95  |         pub fn find(&mut self, mut point: Point) -> Point {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |         pub fn get(&mut self, point: Point) -> &T {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |         pub fn find_and_get(&mut self, point: Point) -> (Point, &T) {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |         pub fn union(&mut self, a: Point, b: Point, merge: impl FnOnce(T, T) -> T) -> Point {
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `union-find` (bin "union-find" test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a8ead1771a77a646c5a56eeab0e4779873e4a1b5a3a20dc7982c8dc3d3181094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8ead1771a77a646c5a56eeab0e4779873e4a1b5a3a20dc7982c8dc3d3181094", kill_on_drop: false }`
[INFO] [stdout] a8ead1771a77a646c5a56eeab0e4779873e4a1b5a3a20dc7982c8dc3d3181094
