[INFO] cloning repository https://github.com/szarykott/the_pope_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/szarykott/the_pope_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszarykott%2Fthe_pope_game", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81134e5879e5d312f317efca55b5818885178781
[INFO] checking szarykott/the_pope_game against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszarykott%2Fthe_pope_game" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/szarykott/the_pope_game on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/szarykott/the_pope_game
[INFO] finished tweaking git repo https://github.com/szarykott/the_pope_game
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[INFO] crate git repo https://github.com/szarykott/the_pope_game 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "d850d34a2586f9d1cf0c73949ecbf563c29774aacb7046e6e9b5553451a5ab90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d850d34a2586f9d1cf0c73949ecbf563c29774aacb7046e6e9b5553451a5ab90", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85126339e48526d6e884f36002ad7316da18e7e73487d862c190c184a81cf247
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[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling futures-core v0.3.28
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[INFO] [stdout] warning: unused imports: `html`, `networking`
[INFO] [stdout]  --> src/solver.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{html, networking, rate_limiter};
[INFO] [stdout]   |             ^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `html`, `networking`
[INFO] [stdout]  --> src/solver.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{html, networking, rate_limiter};
[INFO] [stdout]   |             ^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate_limiter`
[INFO] [stdout]  --> src/solver.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let rate_limiter = rate_limiter::RateLimiter::new();
[INFO] [stdout]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rate_limiter`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_url`
[INFO] [stdout]  --> src/solver.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_url`
[INFO] [stdout]  --> src/solver.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` is never used
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RateLimiter` is never constructed
[INFO] [stdout]  --> src/rate_limiter.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct RateLimiter {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `token_replenish_loop`, and `wait` are never used
[INFO] [stdout]   --> src/rate_limiter.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl RateLimiter {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> RateLimiter {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn token_replenish_loop(pair: Arc<(Mutex<u16>, Condvar)>) -> JoinHandle<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn wait(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/solver.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]  --> src/solver.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` should have an upper case name
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PER_SECOND_RATE_LIMIT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate_limiter`
[INFO] [stdout]  --> src/solver.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let rate_limiter = rate_limiter::RateLimiter::new();
[INFO] [stdout]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rate_limiter`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_url`
[INFO] [stdout]  --> src/solver.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_url`
[INFO] [stdout]  --> src/solver.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` is never used
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RateLimiter` is never constructed
[INFO] [stdout]  --> src/rate_limiter.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct RateLimiter {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `token_replenish_loop`, and `wait` are never used
[INFO] [stdout]   --> src/rate_limiter.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl RateLimiter {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> RateLimiter {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn token_replenish_loop(pair: Arc<(Mutex<u16>, Condvar)>) -> JoinHandle<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn wait(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/solver.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]  --> src/solver.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` should have an upper case name
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PER_SECOND_RATE_LIMIT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.80s
[INFO] running `Command { std: "docker" "inspect" "85126339e48526d6e884f36002ad7316da18e7e73487d862c190c184a81cf247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85126339e48526d6e884f36002ad7316da18e7e73487d862c190c184a81cf247", kill_on_drop: false }`
[INFO] [stdout] 85126339e48526d6e884f36002ad7316da18e7e73487d862c190c184a81cf247
[INFO] checking szarykott/the_pope_game against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fszarykott%2Fthe_pope_game" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/szarykott/the_pope_game on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/szarykott/the_pope_game
[INFO] finished tweaking git repo https://github.com/szarykott/the_pope_game
[INFO] tweaked toml for git repo https://github.com/szarykott/the_pope_game written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/szarykott/the_pope_game 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2ef51af010f419e087e8b4e214ccf366878343db37f7e726901f1b6247ce2a8
[INFO] running `Command { std: "docker" "start" "-a" "b2ef51af010f419e087e8b4e214ccf366878343db37f7e726901f1b6247ce2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2ef51af010f419e087e8b4e214ccf366878343db37f7e726901f1b6247ce2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2ef51af010f419e087e8b4e214ccf366878343db37f7e726901f1b6247ce2a8", kill_on_drop: false }`
[INFO] [stdout] b2ef51af010f419e087e8b4e214ccf366878343db37f7e726901f1b6247ce2a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cd2e5ad2ab26bbe2dae2d15680860fa6a95483f84321b376bb8a05f5ab81495
[INFO] running `Command { std: "docker" "start" "-a" "2cd2e5ad2ab26bbe2dae2d15680860fa6a95483f84321b376bb8a05f5ab81495", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling openssl v0.10.57
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling futures-util v0.3.28
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[INFO] [stdout] warning: unused imports: `html`, `networking`
[INFO] [stdout]  --> src/solver.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{html, networking, rate_limiter};
[INFO] [stdout]   |             ^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `html`, `networking`
[INFO] [stdout]  --> src/solver.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{html, networking, rate_limiter};
[INFO] [stdout]   |             ^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate_limiter`
[INFO] [stdout]  --> src/solver.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let rate_limiter = rate_limiter::RateLimiter::new();
[INFO] [stdout]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rate_limiter`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_url`
[INFO] [stdout]  --> src/solver.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_url`
[INFO] [stdout]  --> src/solver.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` is never used
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RateLimiter` is never constructed
[INFO] [stdout]  --> src/rate_limiter.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct RateLimiter {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `token_replenish_loop`, and `wait` are never used
[INFO] [stdout]   --> src/rate_limiter.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl RateLimiter {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> RateLimiter {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn token_replenish_loop(pair: Arc<(Mutex<u16>, Condvar)>) -> JoinHandle<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn wait(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/solver.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]  --> src/solver.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` should have an upper case name
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PER_SECOND_RATE_LIMIT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate_limiter`
[INFO] [stdout]  --> src/solver.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let rate_limiter = rate_limiter::RateLimiter::new();
[INFO] [stdout]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rate_limiter`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_url`
[INFO] [stdout]  --> src/solver.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_url`
[INFO] [stdout]  --> src/solver.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_url`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` is never used
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RateLimiter` is never constructed
[INFO] [stdout]  --> src/rate_limiter.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct RateLimiter {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `token_replenish_loop`, and `wait` are never used
[INFO] [stdout]   --> src/rate_limiter.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl RateLimiter {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 11 |     pub fn new() -> RateLimiter {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn token_replenish_loop(pair: Arc<(Mutex<u16>, Condvar)>) -> JoinHandle<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn wait(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/solver.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]  --> src/solver.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn solve(start_url: String, end_url: String) -> Vec<Solution> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PerSecondRateLimit` should have an upper case name
[INFO] [stdout]  --> src/rate_limiter.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const PerSecondRateLimit: u16 = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PER_SECOND_RATE_LIMIT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.65s
[INFO] running `Command { std: "docker" "inspect" "2cd2e5ad2ab26bbe2dae2d15680860fa6a95483f84321b376bb8a05f5ab81495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd2e5ad2ab26bbe2dae2d15680860fa6a95483f84321b376bb8a05f5ab81495", kill_on_drop: false }`
[INFO] [stdout] 2cd2e5ad2ab26bbe2dae2d15680860fa6a95483f84321b376bb8a05f5ab81495