[INFO] cloning repository https://github.com/esqu1/rusty-with-graphs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/esqu1/rusty-with-graphs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesqu1%2Frusty-with-graphs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesqu1%2Frusty-with-graphs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9443bba14c0e6d6a05dce3d4eab47e4021c63b47
[INFO] testing esqu1/rusty-with-graphs against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fesqu1%2Frusty-with-graphs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/esqu1/rusty-with-graphs on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/esqu1/rusty-with-graphs
[INFO] finished tweaking git repo https://github.com/esqu1/rusty-with-graphs
[INFO] tweaked toml for git repo https://github.com/esqu1/rusty-with-graphs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/esqu1/rusty-with-graphs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded matrix v0.22.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", 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] d10668ba95f71b99e3dc547805dcaa6216b6a44dffeae96bdfbeae87da3e0282
[INFO] running `Command { std: "docker" "start" "-a" "d10668ba95f71b99e3dc547805dcaa6216b6a44dffeae96bdfbeae87da3e0282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d10668ba95f71b99e3dc547805dcaa6216b6a44dffeae96bdfbeae87da3e0282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d10668ba95f71b99e3dc547805dcaa6216b6a44dffeae96bdfbeae87da3e0282", kill_on_drop: false }`
[INFO] [stdout] d10668ba95f71b99e3dc547805dcaa6216b6a44dffeae96bdfbeae87da3e0282
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 198a5de97692d0ac4c16eee6e8557e5c1ea669b14f3de34aa2117cdf903dfd0d
[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" "198a5de97692d0ac4c16eee6e8557e5c1ea669b14f3de34aa2117cdf903dfd0d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling matrix v0.22.0
[INFO] [stderr]    Compiling rusty-with-graphs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/flow.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut residual_graph = new_graph.clone();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dijkstra`
[INFO] [stdout]   --> src/shortest_path.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn dijkstra<V: Default + Copy, E: Default + Copy + Measure + Add<Output = E>>(
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_fold`
[INFO] [stdout]  --> src/search.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn bfs_fold<T: Default + Clone, V: Default + Clone, U, G: Graph<T, V>>(
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_vertex`
[INFO] [stdout]   --> src/search.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn print_vertex<T: Default + Clone>((_, vertex): (Option<i32>, &Vertex<T>), _: ()) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_print`
[INFO] [stdout]   --> src/search.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn bfs_print<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_path_exists`
[INFO] [stdout]   --> src/search.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn bfs_path_exists<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_pred`
[INFO] [stdout]   --> src/search.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn add_pred<'a, T: Default + Clone>(
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_bfs_preds`
[INFO] [stdout]   --> src/search.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn build_bfs_preds<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ford_fulkerson`
[INFO] [stdout]  --> src/flow.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn ford_fulkerson<
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `Command { std: "docker" "inspect" "198a5de97692d0ac4c16eee6e8557e5c1ea669b14f3de34aa2117cdf903dfd0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "198a5de97692d0ac4c16eee6e8557e5c1ea669b14f3de34aa2117cdf903dfd0d", kill_on_drop: false }`
[INFO] [stdout] 198a5de97692d0ac4c16eee6e8557e5c1ea669b14f3de34aa2117cdf903dfd0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de488c6d721df36d7a04f0a5588e155147fe3adc84314ed309a6c2efbc5362a3
[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" "de488c6d721df36d7a04f0a5588e155147fe3adc84314ed309a6c2efbc5362a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-with-graphs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/flow.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut residual_graph = new_graph.clone();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dijkstra`
[INFO] [stdout]   --> src/shortest_path.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn dijkstra<V: Default + Copy, E: Default + Copy + Measure + Add<Output = E>>(
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_fold`
[INFO] [stdout]  --> src/search.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn bfs_fold<T: Default + Clone, V: Default + Clone, U, G: Graph<T, V>>(
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_vertex`
[INFO] [stdout]   --> src/search.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn print_vertex<T: Default + Clone>((_, vertex): (Option<i32>, &Vertex<T>), _: ()) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_print`
[INFO] [stdout]   --> src/search.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn bfs_print<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_path_exists`
[INFO] [stdout]   --> src/search.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn bfs_path_exists<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_pred`
[INFO] [stdout]   --> src/search.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn add_pred<'a, T: Default + Clone>(
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_bfs_preds`
[INFO] [stdout]   --> src/search.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn build_bfs_preds<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ford_fulkerson`
[INFO] [stdout]  --> src/flow.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn ford_fulkerson<
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/flow.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let mut residual_graph = new_graph.clone();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dijkstra`
[INFO] [stdout]   --> src/shortest_path.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn dijkstra<V: Default + Copy, E: Default + Copy + Measure + Add<Output = E>>(
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs_path_exists`
[INFO] [stdout]   --> src/search.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn bfs_path_exists<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_pred`
[INFO] [stdout]   --> src/search.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn add_pred<'a, T: Default + Clone>(
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_bfs_preds`
[INFO] [stdout]   --> src/search.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn build_bfs_preds<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ford_fulkerson`
[INFO] [stdout]  --> src/flow.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn ford_fulkerson<
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "de488c6d721df36d7a04f0a5588e155147fe3adc84314ed309a6c2efbc5362a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de488c6d721df36d7a04f0a5588e155147fe3adc84314ed309a6c2efbc5362a3", kill_on_drop: false }`
[INFO] [stdout] de488c6d721df36d7a04f0a5588e155147fe3adc84314ed309a6c2efbc5362a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", 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] 8adf5b4c03f6172b8645606a585351304a914b3a4e449cde531fb7c6c378f186
[INFO] running `Command { std: "docker" "start" "-a" "8adf5b4c03f6172b8645606a585351304a914b3a4e449cde531fb7c6c378f186", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/flow.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut residual_graph = new_graph.clone();
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dijkstra`
[INFO] [stderr]   --> src/shortest_path.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn dijkstra<V: Default + Copy, E: Default + Copy + Measure + Add<Output = E>>(
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs_fold`
[INFO] [stderr]  --> src/search.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn bfs_fold<T: Default + Clone, V: Default + Clone, U, G: Graph<T, V>>(
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_vertex`
[INFO] [stderr]   --> src/search.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn print_vertex<T: Default + Clone>((_, vertex): (Option<i32>, &Vertex<T>), _: ()) {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs_print`
[INFO] [stderr]   --> src/search.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub fn bfs_print<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs_path_exists`
[INFO] [stderr]   --> src/search.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn bfs_path_exists<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_pred`
[INFO] [stderr]   --> src/search.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn add_pred<'a, T: Default + Clone>(
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_bfs_preds`
[INFO] [stderr]   --> src/search.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub fn build_bfs_preds<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ford_fulkerson`
[INFO] [stderr]  --> src/flow.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn ford_fulkerson<
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/flow.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut residual_graph = new_graph.clone();
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dijkstra`
[INFO] [stderr]   --> src/shortest_path.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn dijkstra<V: Default + Copy, E: Default + Copy + Measure + Add<Output = E>>(
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs_path_exists`
[INFO] [stderr]   --> src/search.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn bfs_path_exists<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_pred`
[INFO] [stderr]   --> src/search.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn add_pred<'a, T: Default + Clone>(
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_bfs_preds`
[INFO] [stderr]   --> src/search.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub fn build_bfs_preds<T: Default + Clone, V: Default + Clone, G: Graph<T, V>>(
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ford_fulkerson`
[INFO] [stderr]  --> src/flow.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn ford_fulkerson<
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rusty_with_graphs-fc1157632bcf0941
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests rusty-with-graphs
[INFO] [stdout] test tests::graph_prints ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8adf5b4c03f6172b8645606a585351304a914b3a4e449cde531fb7c6c378f186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8adf5b4c03f6172b8645606a585351304a914b3a4e449cde531fb7c6c378f186", kill_on_drop: false }`
[INFO] [stdout] 8adf5b4c03f6172b8645606a585351304a914b3a4e449cde531fb7c6c378f186
