[INFO] updating cached repository sirkibsirkib/testing_ground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sirkibsirkib/testing_ground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sirkibsirkib/testing_ground" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sirkibsirkib/testing_ground"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sirkibsirkib/testing_ground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sirkibsirkib/testing_ground" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/sirkibsirkib/testing_ground"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/sirkibsirkib/testing_ground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3ebe8b889537eda9311980dd4a1ca4fbbe8f6b97
[INFO] sha for GitHub repo sirkibsirkib/testing_ground: 3ebe8b889537eda9311980dd4a1ca4fbbe8f6b97
[INFO] validating manifest of sirkibsirkib/testing_ground on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sirkibsirkib/testing_ground on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sirkibsirkib/testing_ground
[INFO] finished frobbing sirkibsirkib/testing_ground
[INFO] frobbed toml for sirkibsirkib/testing_ground written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sirkibsirkib/testing_ground/Cargo.toml
[INFO] started frobbing sirkibsirkib/testing_ground
[INFO] finished frobbing sirkibsirkib/testing_ground
[INFO] frobbed toml for sirkibsirkib/testing_ground written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/sirkibsirkib/testing_ground/Cargo.toml
[INFO] crate sirkibsirkib/testing_ground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sirkibsirkib/testing_ground against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-1/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/sirkibsirkib/testing_ground:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4eb9380ed2eabdafdf0ca6305e4e958645bba12648a797453e28c06d9faa7800
[INFO] running `"docker" "start" "-a" "4eb9380ed2eabdafdf0ca6305e4e958645bba12648a797453e28c06d9faa7800"`
[INFO] [stderr]     Checking either v1.3.0
[INFO] [stderr]     Checking serde v1.0.16
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking maplit v0.1.5
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking noise v0.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.16
[INFO] [stderr]     Checking glutin v0.10.1
[INFO] [stderr]     Checking arrayvec v0.4.6
[INFO] [stderr]     Checking array-init v0.0.2
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking rayon-core v1.3.0
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]    Compiling derivative v1.0.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking piston2d-graphics v0.23.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.17.0
[INFO] [stderr]     Checking gfx_core v0.7.2
[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]     Checking serde_json v1.0.5
[INFO] [stderr]     Checking pistoncore-window v0.30.0
[INFO] [stderr]     Checking piston-ai_behavior v0.22.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.35.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.42.0
[INFO] [stderr]     Checking piston v0.35.0
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[INFO] [stderr]     Checking gfx v0.16.1
[INFO] [stderr]     Checking gfx_device_gl v0.14.4
[INFO] [stderr]     Checking piston-gfx_texture v0.29.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.46.0
[INFO] [stderr]     Checking piston_window v0.73.0
[INFO] [stderr]     Checking testing_ground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/world/zones.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::{HashMap};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::location::LocationPrimitive`
[INFO] [stderr]   --> src/world/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use self::location::LocationPrimitive;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/world/mod.rs:232:60
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 (height - self.calc_height_at(CPoint2::new((pt.x+AZIMUTH_SHIFT % 1.0), pt.y))) * 0.5,
[INFO] [stderr]     |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Div`, `Mul`
[INFO] [stderr]  --> src/points.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use ::std::ops::{Add,Sub,Mul,Div};
[INFO] [stderr]   |                          ^^^ ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashMap`
[INFO] [stderr]  --> src/world/zones.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::{HashMap};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::location::LocationPrimitive`
[INFO] [stderr]   --> src/world/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use self::location::LocationPrimitive;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/world/mod.rs:232:60
[INFO] [stderr]     |
[INFO] [stderr] 232 |                 (height - self.calc_height_at(CPoint2::new((pt.x+AZIMUTH_SHIFT % 1.0), pt.y))) * 0.5,
[INFO] [stderr]     |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Div`, `Mul`
[INFO] [stderr]  --> src/points.rs:3:26
[INFO] [stderr]   |
[INFO] [stderr] 3 | use ::std::ops::{Add,Sub,Mul,Div};
[INFO] [stderr]   |                          ^^^ ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pt`
[INFO] [stderr]    --> src/world/mod.rs:198:27
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn material_at(&self, pt: CPoint2, point_data: &PointSampleData) -> Material {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_pt`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time_0`
[INFO] [stderr]    --> src/world/mod.rs:294:13
[INFO] [stderr]     |
[INFO] [stderr] 294 |         let time_0 = ::std::time::Instant::now();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_time_0`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time_1`
[INFO] [stderr]    --> src/world/mod.rs:305:13
[INFO] [stderr]     |
[INFO] [stderr] 305 |         let time_1 = ::std::time::Instant::now();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_time_1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time_2`
[INFO] [stderr]    --> src/world/mod.rs:307:13
[INFO] [stderr]     |
[INFO] [stderr] 307 |         let time_2 = ::std::time::Instant::now();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_time_2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `coord`
[INFO] [stderr]    --> src/world/zones.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                 let coord = DPoint2::new(x as i32,y as i32);
[INFO] [stderr]     |                     ^^^^^ help: consider prefixing with an underscore: `_coord`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]   --> src/world/zones.rs:54:14
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for (k, v) in (self.samples).into_iter() {
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/world/location.rs:32:30
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut which_mat = |x, y| {
[INFO] [stderr]    |                              ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/world/location.rs:32:33
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut which_mat = |x, y| {
[INFO] [stderr]    |                                 ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pt`
[INFO] [stderr]    --> src/world/mod.rs:198:27
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn material_at(&self, pt: CPoint2, point_data: &PointSampleData) -> Material {
[INFO] [stderr]     |                           ^^ help: consider prefixing with an underscore: `_pt`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time_0`
[INFO] [stderr]    --> src/world/mod.rs:294:13
[INFO] [stderr]     |
[INFO] [stderr] 294 |         let time_0 = ::std::time::Instant::now();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_time_0`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time_1`
[INFO] [stderr]    --> src/world/mod.rs:305:13
[INFO] [stderr]     |
[INFO] [stderr] 305 |         let time_1 = ::std::time::Instant::now();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_time_1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time_2`
[INFO] [stderr]    --> src/world/mod.rs:307:13
[INFO] [stderr]     |
[INFO] [stderr] 307 |         let time_2 = ::std::time::Instant::now();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_time_2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `coord`
[INFO] [stderr]    --> src/world/zones.rs:210:21
[INFO] [stderr]     |
[INFO] [stderr] 210 |                 let coord = DPoint2::new(x as i32,y as i32);
[INFO] [stderr]     |                     ^^^^^ help: consider prefixing with an underscore: `_coord`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]   --> src/world/zones.rs:54:14
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for (k, v) in (self.samples).into_iter() {
[INFO] [stderr]    |              ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/world/location.rs:32:30
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut which_mat = |x, y| {
[INFO] [stderr]    |                              ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/world/location.rs:32:33
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut which_mat = |x, y| {
[INFO] [stderr]    |                                 ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `replace`
[INFO] [stderr]    --> src/world/grid.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn replace(&mut self, element: T) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `METERS_PER_ZONE_SAMPLE`
[INFO] [stderr]  --> src/world/location.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const METERS_PER_ZONE_SAMPLE : i32 = 50;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LocationPrimitive`
[INFO] [stderr]  --> src/world/location.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct LocationPrimitive {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/world/location.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(seed: u64, zone_in_world: Zone) -> LocationPrimitive {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Location`
[INFO] [stderr]   --> src/world/location.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct Location {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `generate`
[INFO] [stderr]   --> src/world/location.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn generate(loc_prim: LocationPrimitive) -> Location {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sand`
[INFO] [stderr]   --> src/world/mod.rs:33:53
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Rock, Trees, Grass, Water, Ice, Snow, DarkRock, Sand,
[INFO] [stderr]    |                                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Equal`
[INFO] [stderr]    --> src/world/mod.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     Equal, Higher(f32), Lower(f32),
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Higher`
[INFO] [stderr]    --> src/world/mod.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 101 |     Equal, Higher(f32), Lower(f32),
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dist_to`
[INFO] [stderr]   --> src/points.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn dist_to(self, o: Self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scale`
[INFO] [stderr]    --> src/points.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn scale(mut self, scale: f32) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     w.to_png(Path::new("./map.png"), 400).is_ok();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] warning: method is never used: `replace`
[INFO] [stderr]    --> src/world/grid.rs:120:5
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn replace(&mut self, element: T) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `METERS_PER_ZONE_SAMPLE`
[INFO] [stderr]  --> src/world/location.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const METERS_PER_ZONE_SAMPLE : i32 = 50;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LocationPrimitive`
[INFO] [stderr]  --> src/world/location.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct LocationPrimitive {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/world/location.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(seed: u64, zone_in_world: Zone) -> LocationPrimitive {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Location`
[INFO] [stderr]   --> src/world/location.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct Location {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `generate`
[INFO] [stderr]   --> src/world/location.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn generate(loc_prim: LocationPrimitive) -> Location {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sand`
[INFO] [stderr]   --> src/world/mod.rs:33:53
[INFO] [stderr]    |
[INFO] [stderr] 33 |     Rock, Trees, Grass, Water, Ice, Snow, DarkRock, Sand,
[INFO] [stderr]    |                                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Equal`
[INFO] [stderr]    --> src/world/mod.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     Equal, Higher(f32), Lower(f32),
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Higher`
[INFO] [stderr]    --> src/world/mod.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 101 |     Equal, Higher(f32), Lower(f32),
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dist_to`
[INFO] [stderr]   --> src/points.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn dist_to(self, o: Self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scale`
[INFO] [stderr]    --> src/points.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn scale(mut self, scale: f32) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     w.to_png(Path::new("./map.png"), 400).is_ok();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `"docker" "inspect" "4eb9380ed2eabdafdf0ca6305e4e958645bba12648a797453e28c06d9faa7800"`
[INFO] running `"docker" "rm" "-f" "4eb9380ed2eabdafdf0ca6305e4e958645bba12648a797453e28c06d9faa7800"`
[INFO] [stdout] 4eb9380ed2eabdafdf0ca6305e4e958645bba12648a797453e28c06d9faa7800