[INFO] cloning repository https://github.com/gluyas/niwa-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gluyas/niwa-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bed97251b7a0b4b40881cc8e92755c9c225fd876
[INFO] testing gluyas/niwa-rs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gluyas/niwa-rs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gluyas/niwa-rs
[INFO] finished tweaking git repo https://github.com/gluyas/niwa-rs
[INFO] tweaked toml for git repo https://github.com/gluyas/niwa-rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/gluyas/niwa-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46a161b404abd6fd871295197608352cb2e4e248fded1374cdddd1bbcc835fb1
[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" "46a161b404abd6fd871295197608352cb2e4e248fded1374cdddd1bbcc835fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46a161b404abd6fd871295197608352cb2e4e248fded1374cdddd1bbcc835fb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a161b404abd6fd871295197608352cb2e4e248fded1374cdddd1bbcc835fb1", kill_on_drop: false }`
[INFO] [stdout] 46a161b404abd6fd871295197608352cb2e4e248fded1374cdddd1bbcc835fb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58b6cde19076c47e174c24885bee05dc7ba0295593dd5ee04543ce978becf070
[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" "58b6cde19076c47e174c24885bee05dc7ba0295593dd5ee04543ce978becf070", kill_on_drop: false }`
[INFO] [stderr]    Compiling niwa-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/util.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |         *self += (-rhs.into());
[INFO] [stdout]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:55:36
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 println!("{}", err.description());
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nudge`
[INFO] [stdout]   --> src/util.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn nudge(self, dir: Direction) {
[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: `snap_to_edge`
[INFO] [stdout]    --> src/util.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_rect`
[INFO] [stdout]    --> src/util.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_within`
[INFO] [stdout]    --> src/util.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_add`
[INFO] [stdout]    --> src/util.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_diff`
[INFO] [stdout]    --> src/util.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/util.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `of`
[INFO] [stdout]    --> src/util.rs:323:12
[INFO] [stdout]     |
[INFO] [stdout] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sand`
[INFO] [stdout]   --> src/world.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Sand,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stone`
[INFO] [stdout]   --> src/world.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Stone,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Water`
[INFO] [stdout]   --> src/world.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Water,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_blocked`
[INFO] [stdout]   --> src/puzzle.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Complete`
[INFO] [stdout]   --> src/puzzle.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     Complete,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_walls`
[INFO] [stdout]    --> src/puzzle.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/util.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         self + dir;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `Command { std: "docker" "inspect" "58b6cde19076c47e174c24885bee05dc7ba0295593dd5ee04543ce978becf070", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58b6cde19076c47e174c24885bee05dc7ba0295593dd5ee04543ce978becf070", kill_on_drop: false }`
[INFO] [stdout] 58b6cde19076c47e174c24885bee05dc7ba0295593dd5ee04543ce978becf070
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e023bc8a8d23f36cdd86ce0f77a01fb61467babb1e37cdacff8b18651595d55
[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" "5e023bc8a8d23f36cdd86ce0f77a01fb61467babb1e37cdacff8b18651595d55", kill_on_drop: false }`
[INFO] [stderr]    Compiling niwa-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/util.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |         *self += (-rhs.into());
[INFO] [stdout]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:55:36
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 println!("{}", err.description());
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `nudge`
[INFO] [stdout]   --> src/util.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn nudge(self, dir: Direction) {
[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: `snap_to_edge`
[INFO] [stdout]    --> src/util.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter_rect`
[INFO] [stdout]    --> src/util.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_within`
[INFO] [stdout]    --> src/util.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_add`
[INFO] [stdout]    --> src/util.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `component_diff`
[INFO] [stdout]    --> src/util.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/util.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `of`
[INFO] [stdout]    --> src/util.rs:323:12
[INFO] [stdout]     |
[INFO] [stdout] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Sand`
[INFO] [stdout]   --> src/world.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Sand,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stone`
[INFO] [stdout]   --> src/world.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Stone,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Water`
[INFO] [stdout]   --> src/world.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Water,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_blocked`
[INFO] [stdout]   --> src/puzzle.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Complete`
[INFO] [stdout]   --> src/puzzle.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     Complete,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_walls`
[INFO] [stdout]    --> src/puzzle.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/util.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         self + dir;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "5e023bc8a8d23f36cdd86ce0f77a01fb61467babb1e37cdacff8b18651595d55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e023bc8a8d23f36cdd86ce0f77a01fb61467babb1e37cdacff8b18651595d55", kill_on_drop: false }`
[INFO] [stdout] 5e023bc8a8d23f36cdd86ce0f77a01fb61467babb1e37cdacff8b18651595d55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc2bf6b27b1e9c39875d67d24c35706670ef08932fb8eac66647604826250fa2
[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" "cc2bf6b27b1e9c39875d67d24c35706670ef08932fb8eac66647604826250fa2", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/util.rs:70:18
[INFO] [stderr]    |
[INFO] [stderr] 70 |         *self += (-rhs.into());
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 println!("{}", err.description());
[INFO] [stderr]    |                                    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `nudge`
[INFO] [stderr]   --> src/util.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn nudge(self, dir: Direction) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `snap_to_edge`
[INFO] [stderr]    --> src/util.rs:136:12
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `iter_rect`
[INFO] [stderr]    --> src/util.rs:151:12
[INFO] [stderr]     |
[INFO] [stderr] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_within`
[INFO] [stderr]    --> src/util.rs:161:12
[INFO] [stderr]     |
[INFO] [stderr] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `component_add`
[INFO] [stderr]    --> src/util.rs:165:12
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `component_diff`
[INFO] [stderr]    --> src/util.rs:170:12
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/util.rs:261:12
[INFO] [stderr]     |
[INFO] [stderr] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `of`
[INFO] [stderr]    --> src/util.rs:323:12
[INFO] [stderr]     |
[INFO] [stderr] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stderr]     |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sand`
[INFO] [stderr]   --> src/world.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Sand,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stone`
[INFO] [stderr]   --> src/world.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Stone,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Water`
[INFO] [stderr]   --> src/world.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Water,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_blocked`
[INFO] [stderr]   --> src/puzzle.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Complete`
[INFO] [stderr]   --> src/puzzle.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     Complete,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_walls`
[INFO] [stderr]    --> src/puzzle.rs:126:12
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/util.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         self + dir;
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/niwa_rs-083970719bc5ee57
[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" "cc2bf6b27b1e9c39875d67d24c35706670ef08932fb8eac66647604826250fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc2bf6b27b1e9c39875d67d24c35706670ef08932fb8eac66647604826250fa2", kill_on_drop: false }`
[INFO] [stdout] cc2bf6b27b1e9c39875d67d24c35706670ef08932fb8eac66647604826250fa2