[INFO] cloning repository https://github.com/RobJenks/simulated-annealing-optimisation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RobJenks/simulated-annealing-optimisation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobJenks%2Fsimulated-annealing-optimisation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobJenks%2Fsimulated-annealing-optimisation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6aa4b3c9f41a48a3fcbca4f3713715a127f74e1d
[INFO] testing RobJenks/simulated-annealing-optimisation against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobJenks%2Fsimulated-annealing-optimisation" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RobJenks/simulated-annealing-optimisation on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RobJenks/simulated-annealing-optimisation
[INFO] finished tweaking git repo https://github.com/RobJenks/simulated-annealing-optimisation
[INFO] tweaked toml for git repo https://github.com/RobJenks/simulated-annealing-optimisation written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/RobJenks/simulated-annealing-optimisation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6625be2b52f6e71b22ca4e9b2971cd0b9cc153ab91bd3342d4816394232eb88
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a6625be2b52f6e71b22ca4e9b2971cd0b9cc153ab91bd3342d4816394232eb88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6625be2b52f6e71b22ca4e9b2971cd0b9cc153ab91bd3342d4816394232eb88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6625be2b52f6e71b22ca4e9b2971cd0b9cc153ab91bd3342d4816394232eb88", kill_on_drop: false }`
[INFO] [stdout] a6625be2b52f6e71b22ca4e9b2971cd0b9cc153ab91bd3342d4816394232eb88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f166b30c621f1693484b8b622b5cd03f81b333478e7797c60290e5e875722149
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f166b30c621f1693484b8b622b5cd03f81b333478e7797c60290e5e875722149", kill_on_drop: false }`
[INFO] [stderr]    Compiling simulated-annealing-optimisation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::mpsc::channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/solver/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::base::*`
[INFO] [stdout]  --> src/system/state.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::base::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::system::solvable::Solvable`
[INFO] [stdout]  --> src/system/state.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::system::solvable::Solvable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]   --> src/system/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::borrow::BorrowMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/systems/debug/state.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{self, Rng};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::base::*`
[INFO] [stdout]  --> src/systems/debug/state.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::base::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::system::solvable::Solvable`
[INFO] [stdout]  --> src/systems/debug/state.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::system::solvable::Solvable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stdout]  --> src/systems/debug/state.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::mpsc::channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::system::state::State`
[INFO] [stdout]  --> src/systems/salesman/solvable.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::system::state::State;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Noop`
[INFO] [stdout]  --> src/solver/command.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Noop,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `solver_id`
[INFO] [stdout]  --> src/solver/result.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     solver_id: SolverId,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_solver_id`
[INFO] [stdout]   --> src/solver/result.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn get_solver_id(&self) -> SolverId { self.solver_id }
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Noop`
[INFO] [stdout]  --> src/solver/signal.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Noop,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `command_receiver`
[INFO] [stdout]   --> src/solver/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     command_receiver: Receiver<Command>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shutdown_requested`
[INFO] [stdout]   --> src/system/mod.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn shutdown_requested(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `terminate_solver_by_id`
[INFO] [stdout]    --> src/system/mod.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn terminate_solver_by_id(&mut self, solver_id: &SolverId) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_debug`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn run_debug() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/solver/mod.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |             output.send(SolverResult::new(id, state));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/solver/mod.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.signal_sender.send(SolverSignal::Complete(self.id));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "f166b30c621f1693484b8b622b5cd03f81b333478e7797c60290e5e875722149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f166b30c621f1693484b8b622b5cd03f81b333478e7797c60290e5e875722149", kill_on_drop: false }`
[INFO] [stdout] f166b30c621f1693484b8b622b5cd03f81b333478e7797c60290e5e875722149
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 835484a37910ff5188990dc403e82456e3b5cf6620c49d7e2f339c2b9e6f8b8e
[INFO] running `Command { std: "docker" "start" "-a" "835484a37910ff5188990dc403e82456e3b5cf6620c49d7e2f339c2b9e6f8b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling simulated-annealing-optimisation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::mpsc::channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/solver/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::base::*`
[INFO] [stdout]  --> src/system/state.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::base::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::system::solvable::Solvable`
[INFO] [stdout]  --> src/system/state.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::system::solvable::Solvable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]   --> src/system/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::borrow::BorrowMut;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/systems/debug/state.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{self, Rng};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::base::*`
[INFO] [stdout]  --> src/systems/debug/state.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::base::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::system::solvable::Solvable`
[INFO] [stdout]  --> src/systems/debug/state.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::system::solvable::Solvable;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stdout]  --> src/systems/debug/state.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::mpsc::channel;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::system::state::State`
[INFO] [stdout]  --> src/systems/salesman/solvable.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::system::state::State;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Noop`
[INFO] [stdout]  --> src/solver/command.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Noop,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `solver_id`
[INFO] [stdout]  --> src/solver/result.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     solver_id: SolverId,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_solver_id`
[INFO] [stdout]   --> src/solver/result.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn get_solver_id(&self) -> SolverId { self.solver_id }
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Noop`
[INFO] [stdout]  --> src/solver/signal.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Noop,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `command_receiver`
[INFO] [stdout]   --> src/solver/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     command_receiver: Receiver<Command>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shutdown_requested`
[INFO] [stdout]   --> src/system/mod.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn shutdown_requested(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `terminate_solver_by_id`
[INFO] [stdout]    --> src/system/mod.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn terminate_solver_by_id(&mut self, solver_id: &SolverId) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_debug`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn run_debug() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/solver/mod.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |             output.send(SolverResult::new(id, state));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/solver/mod.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         self.signal_sender.send(SolverSignal::Complete(self.id));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "835484a37910ff5188990dc403e82456e3b5cf6620c49d7e2f339c2b9e6f8b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835484a37910ff5188990dc403e82456e3b5cf6620c49d7e2f339c2b9e6f8b8e", kill_on_drop: false }`
[INFO] [stdout] 835484a37910ff5188990dc403e82456e3b5cf6620c49d7e2f339c2b9e6f8b8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 37f2af9b8ba5d0d9c9435c371bf729a8ac911524304f44380144a0396075363e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "37f2af9b8ba5d0d9c9435c371bf729a8ac911524304f44380144a0396075363e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 1 | use std::sync::mpsc::channel;
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/solver/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::base::*`
[INFO] [stderr]  --> src/system/state.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::base::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::system::solvable::Solvable`
[INFO] [stderr]  --> src/system/state.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::system::solvable::Solvable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]   --> src/system/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::borrow::BorrowMut;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/systems/debug/state.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::{self, Rng};
[INFO] [stderr]   |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::base::*`
[INFO] [stderr]  --> src/systems/debug/state.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::base::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::system::solvable::Solvable`
[INFO] [stderr]  --> src/systems/debug/state.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::system::solvable::Solvable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::channel`
[INFO] [stderr]  --> src/systems/debug/state.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::sync::mpsc::channel;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::system::state::State`
[INFO] [stderr]  --> src/systems/salesman/solvable.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::system::state::State;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Noop`
[INFO] [stderr]  --> src/solver/command.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Noop,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `solver_id`
[INFO] [stderr]  --> src/solver/result.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     solver_id: SolverId,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_solver_id`
[INFO] [stderr]   --> src/solver/result.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn get_solver_id(&self) -> SolverId { self.solver_id }
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Noop`
[INFO] [stderr]  --> src/solver/signal.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Noop,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `command_receiver`
[INFO] [stderr]   --> src/solver/mod.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     command_receiver: Receiver<Command>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `shutdown_requested`
[INFO] [stderr]   --> src/system/mod.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn shutdown_requested(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `terminate_solver_by_id`
[INFO] [stderr]    --> src/system/mod.rs:130:8
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn terminate_solver_by_id(&mut self, solver_id: &SolverId) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run_debug`
[INFO] [stderr]   --> src/main.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn run_debug() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/solver/mod.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             output.send(SolverResult::new(id, state));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/solver/mod.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         self.signal_sender.send(SolverSignal::Complete(self.id));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `simulated-annealing-optimisation` (bin "simulated-annealing-optimisation" test) generated 21 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simulated_annealing_optimisation-7a8992c8fc6c8551)
[INFO] running `Command { std: "docker" "inspect" "37f2af9b8ba5d0d9c9435c371bf729a8ac911524304f44380144a0396075363e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f2af9b8ba5d0d9c9435c371bf729a8ac911524304f44380144a0396075363e", kill_on_drop: false }`
[INFO] [stdout] 37f2af9b8ba5d0d9c9435c371bf729a8ac911524304f44380144a0396075363e