[INFO] cloning repository https://github.com/joshuacoles/Coursework-2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joshuacoles/Coursework-2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuacoles%2FCoursework-2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuacoles%2FCoursework-2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 425716e6bb139a7fc9cec94133dd075bcdf734cd
[INFO] checking joshuacoles/Coursework-2 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoshuacoles%2FCoursework-2" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joshuacoles/Coursework-2 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joshuacoles/Coursework-2
[INFO] finished tweaking git repo https://github.com/joshuacoles/Coursework-2
[INFO] tweaked toml for git repo https://github.com/joshuacoles/Coursework-2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/joshuacoles/Coursework-2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded array2d v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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] 08a2acc84aa113ca1223a98896f1ba9d83820898827bd79c457135c051914669
[INFO] running `Command { std: "docker" "start" "-a" "08a2acc84aa113ca1223a98896f1ba9d83820898827bd79c457135c051914669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08a2acc84aa113ca1223a98896f1ba9d83820898827bd79c457135c051914669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a2acc84aa113ca1223a98896f1ba9d83820898827bd79c457135c051914669", kill_on_drop: false }`
[INFO] [stdout] 08a2acc84aa113ca1223a98896f1ba9d83820898827bd79c457135c051914669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97904de4d8f9857a15859f60cfee6d6453856d6c5507b02f30d1f72577c1c164
[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" "97904de4d8f9857a15859f60cfee6d6453856d6c5507b02f30d1f72577c1c164", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]     Checking array2d v0.2.1
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking cw-2-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `random_indexes_in_range`
[INFO] [stdout]   --> src/q1a.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn random_indexes_in_range(range: Range<usize>, expected: usize) -> HashSet<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/q1a.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn new(lx: usize, ly: usize, n: usize) -> Grid {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/q1a.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Insulator`
[INFO] [stdout]   --> src/q2a.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Insulator,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Conductor`
[INFO] [stdout]   --> src/q2a.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Conductor,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SuperConductor`
[INFO] [stdout]   --> src/q2a.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     SuperConductor,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_indexes_in_range`
[INFO] [stdout]   --> src/q2a.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn random_indexes_in_range(range: Range<usize>, expected: usize) -> HashSet<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/q2a.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn new(lx: usize, ly: usize, n: usize, p_super: f64) -> Grid {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `directly_reachable_from`
[INFO] [stdout]   --> src/q2a.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn directly_reachable_from(&self, pos: (usize, usize)) -> HashSet<Pos> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next_to_process`
[INFO] [stdout]    --> src/q2a.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     next_to_process: HashSet<Pos>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/q2a.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn new(grid: Grid) -> ClusterFinder {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]    --> src/q2a.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn search(&mut self) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step`
[INFO] [stdout]    --> src/q2a.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn step(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]    --> src/q2a.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn main() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cluster`
[INFO] [stdout]   --> src/q2b/cluster_finder.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn cluster(&self) -> &HashSet<Pos> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_indexes_in_range`
[INFO] [stdout]   --> src/q1a.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn random_indexes_in_range(range: Range<usize>, expected: usize) -> HashSet<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/q1a.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn new(lx: usize, ly: usize, n: usize) -> Grid {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/q1a.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Insulator`
[INFO] [stdout]   --> src/q2a.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Insulator,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Conductor`
[INFO] [stdout]   --> src/q2a.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Conductor,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SuperConductor`
[INFO] [stdout]   --> src/q2a.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     SuperConductor,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_indexes_in_range`
[INFO] [stdout]   --> src/q2a.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn random_indexes_in_range(range: Range<usize>, expected: usize) -> HashSet<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/q2a.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn new(lx: usize, ly: usize, n: usize, p_super: f64) -> Grid {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `directly_reachable_from`
[INFO] [stdout]   --> src/q2a.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn directly_reachable_from(&self, pos: (usize, usize)) -> HashSet<Pos> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next_to_process`
[INFO] [stdout]    --> src/q2a.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     next_to_process: HashSet<Pos>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/q2a.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn new(grid: Grid) -> ClusterFinder {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]    --> src/q2a.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn search(&mut self) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step`
[INFO] [stdout]    --> src/q2a.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn step(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]    --> src/q2a.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn main() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cluster`
[INFO] [stdout]   --> src/q2b/cluster_finder.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn cluster(&self) -> &HashSet<Pos> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.28s
[INFO] running `Command { std: "docker" "inspect" "97904de4d8f9857a15859f60cfee6d6453856d6c5507b02f30d1f72577c1c164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97904de4d8f9857a15859f60cfee6d6453856d6c5507b02f30d1f72577c1c164", kill_on_drop: false }`
[INFO] [stdout] 97904de4d8f9857a15859f60cfee6d6453856d6c5507b02f30d1f72577c1c164