[INFO] updating cached repository https://github.com/jarrett/cities
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b0d6e7cd4aecd87066c1dfaa5d5ad4df3f195be6
[INFO] testing jarrett/cities against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjarrett%2Fcities" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jarrett/cities on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jarrett/cities
[INFO] finished tweaking git repo https://github.com/jarrett/cities
[INFO] tweaked toml for git repo https://github.com/jarrett/cities written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jarrett/cities already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] c5ca1a36fd572028091acd81ac700aad8944662336879593b88028fa877fa2fe
[INFO] running `"docker" "start" "-a" "c5ca1a36fd572028091acd81ac700aad8944662336879593b88028fa877fa2fe"`
[INFO] [stderr]    Compiling cgmath v0.16.0 (https://github.com/brendanzab/cgmath.git#fec4e836)
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling freetype-sys v0.6.0
[INFO] [stderr]    Compiling deflate v0.7.17
[INFO] [stderr]    Compiling num-complex v0.1.41
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling num-bigint v0.1.41
[INFO] [stderr]    Compiling gl v0.7.0
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling freetype-rs v0.17.0
[INFO] [stderr]    Compiling num-rational v0.1.40
[INFO] [stderr]    Compiling num v0.1.41
[INFO] [stderr]    Compiling glfw v0.20.0 (https://github.com/bjz/glfw-rs.git#d295d5b7)
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling cities v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Matrix`
[INFO] [stderr]  --> src/camera.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 |   EuclideanSpace, Matrix, Matrix3, Matrix4, Ortho, Point2, Point3,
[INFO] [stderr]   |                   ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mode/menu.rs:24:38
[INFO] [stderr]    |
[INFO] [stderr] 24 |   fn transition(&self) -> Option<Box<Mode>> {
[INFO] [stderr]    |                                      ^^^^ help: use `dyn`: `dyn Mode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mode/mod.rs:14:38
[INFO] [stderr]    |
[INFO] [stderr] 14 |   fn transition(&self) -> Option<Box<Mode>>;
[INFO] [stderr]    |                                      ^^^^ help: use `dyn`: `dyn Mode`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr`
[INFO] [stderr]  --> src/opengl/vao.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ptr;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Indices`
[INFO] [stderr]  --> src/opengl/vao.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use super::{Vbo, Attributes, Indices};
[INFO] [stderr]   |                              ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Vbo`
[INFO] [stderr]  --> src/ui/element.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 | use opengl::{Vbo, Texture2d, TextureConfig};
[INFO] [stderr]   |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::program::Program`
[INFO] [stderr]  --> src/ui/element.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use super::program::Program;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::allocator::Allocator`
[INFO] [stderr]  --> src/ui/element.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use super::allocator::Allocator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ui/element.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     Box<Widget + 'static>,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Widget + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr`
[INFO] [stderr]  --> src/ui/mod.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::ptr;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:33:21
[INFO] [stderr]    |
[INFO] [stderr] 33 |   let mut mode: Box<mode::Mode> = Box::new(mode::Menu);
[INFO] [stderr]    |                     ^^^^^^^^^^ help: use `dyn`: `dyn mode::Mode`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `level`
[INFO] [stderr]   --> src/opengl/texture.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     level: GLint,
[INFO] [stderr]    |     ^^^^^ help: consider prefixing with an underscore: `_level`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/opengl/debugging/lines.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let mut vao = Vao::new();
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/opengl/debugging/lines.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut position_buffer: Vbo<Attributes> = Vbo::new();
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/opengl/debugging/lines.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let mut color_buffer: Vbo<Attributes> = Vbo::new();
[INFO] [stderr]    |         ----^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/opengl/debugging/lines.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let mut lines = DebugLines {
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ui/element.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut element = Element {
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/ui/element.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     unsafe {
[INFO] [stderr]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `CAMERA_TILT`
[INFO] [stderr]  --> src/camera.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | static CAMERA_TILT: Rad<f32> = Rad(3.97935069f32);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `CAMERA_ORBIT`
[INFO] [stderr]   --> src/camera.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | static CAMERA_ORBIT: Rad<f32> = Rad(0.488692191f32);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `q_down`
[INFO] [stderr]   --> src/camera.rs:23:3
[INFO] [stderr]    |
[INFO] [stderr] 23 |   q_down: bool,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `e_down`
[INFO] [stderr]   --> src/camera.rs:24:3
[INFO] [stderr]    |
[INFO] [stderr] 24 |   e_down: bool,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/camera.rs:28:3
[INFO] [stderr]    |
[INFO] [stderr] 28 |   pub fn new(width: u16, height: u16, zoom: f32) -> Camera {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decrement_orbit`
[INFO] [stderr]   --> src/camera.rs:39:3
[INFO] [stderr]    |
[INFO] [stderr] 39 |   pub fn decrement_orbit(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance_to`
[INFO] [stderr]   --> src/camera.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn distance_to(&self, point: &Point3<f32>) -> f32 {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `increment_orbit`
[INFO] [stderr]   --> src/camera.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn increment_orbit(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `orbit_to`
[INFO] [stderr]   --> src/camera.rs:61:3
[INFO] [stderr]    |
[INFO] [stderr] 61 |   pub fn orbit_to(&mut self, dir: u8) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pan`
[INFO] [stderr]   --> src/camera.rs:68:3
[INFO] [stderr]    |
[INFO] [stderr] 68 |   pub fn pan(&mut self, amount: &Vector2<f32>) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `receive_input`
[INFO] [stderr]   --> src/camera.rs:76:3
[INFO] [stderr]    |
[INFO] [stderr] 76 |   pub fn receive_input(&mut self, window: &Window) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unproject`
[INFO] [stderr]    --> src/camera.rs:124:3
[INFO] [stderr]     |
[INFO] [stderr] 124 |   pub fn unproject(&self, p: Point2<f32>) -> (Point3<f32>, Point3<f32>) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `zoom_by`
[INFO] [stderr]    --> src/camera.rs:141:3
[INFO] [stderr]     |
[INFO] [stderr] 141 |   pub fn zoom_by(&mut self, multiplier: f32) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resize`
[INFO] [stderr]    --> src/camera.rs:147:3
[INFO] [stderr]     |
[INFO] [stderr] 147 |   pub fn resize(&mut self, width: u16, height: u16) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rebuild_matrices`
[INFO] [stderr]    --> src/camera.rs:155:3
[INFO] [stderr]     |
[INFO] [stderr] 155 |   fn rebuild_matrices(&mut self) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `buffer_sub_data`
[INFO] [stderr]   --> src/opengl/vbo.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   pub fn buffer_sub_data<D>(&mut self, offset: usize, size: usize, data: &Vec<D>) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `width`
[INFO] [stderr]   --> src/opengl/texture.rs:10:3
[INFO] [stderr]    |
[INFO] [stderr] 10 |   width: usize,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `height`
[INFO] [stderr]   --> src/opengl/texture.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   height: usize
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/opengl/texture.rs:23:3
[INFO] [stderr]    |
[INFO] [stderr] 23 |   pub fn new(config: &Config, width: usize, height: usize) -> Texture2d {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_file`
[INFO] [stderr]   --> src/opengl/texture.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   pub fn from_file(path: &Path, config: &Config) -> Texture2d {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bind`
[INFO] [stderr]   --> src/opengl/texture.rs:78:3
[INFO] [stderr]    |
[INFO] [stderr] 78 |   pub fn bind(&self, uniform_idx: GLint, texture_slot: u8) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upload`
[INFO] [stderr]    --> src/opengl/texture.rs:86:3
[INFO] [stderr]     |
[INFO] [stderr] 86  | /   pub fn upload<T>(
[INFO] [stderr] 87  | |     &mut self,
[INFO] [stderr] 88  | |     level: GLint,
[INFO] [stderr] 89  | |     internal_format: GLenum,
[INFO] [stderr] ...   |
[INFO] [stderr] 114 | |     }
[INFO] [stderr] 115 | |   }
[INFO] [stderr]     | |___^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Program`
[INFO] [stderr]  --> src/ui/program.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Program {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/program.rs:21:3
[INFO] [stderr]    |
[INFO] [stderr] 21 |   pub fn new() -> Program {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bind_textures`
[INFO] [stderr]   --> src/ui/program.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn bind_textures(&self, texture_id: GLuint) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `configure_indices`
[INFO] [stderr]   --> src/ui/program.rs:41:3
[INFO] [stderr]    |
[INFO] [stderr] 41 |   fn configure_indices(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Allocator`
[INFO] [stderr]  --> src/ui/allocator.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Allocator {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/allocator.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   pub fn new(buffer_size: usize) -> Allocator {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `alloc_slot`
[INFO] [stderr]   --> src/ui/allocator.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |   pub fn alloc_slot(&mut self) -> usize {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `free_slot`
[INFO] [stderr]   --> src/ui/allocator.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 |   pub fn free_slot(&mut self, idx: usize) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Element`
[INFO] [stderr]   --> src/ui/element.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub struct Element {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_widget`
[INFO] [stderr]   --> src/ui/element.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 | /   pub fn from_widget<T: Widget + 'static>(
[INFO] [stderr] 39 | |     widget: T,
[INFO] [stderr] 40 | |     ui: &mut Ui,
[INFO] [stderr] 41 | |   ) -> Element {
[INFO] [stderr] ...  |
[INFO] [stderr] 70 | |     element
[INFO] [stderr] 71 | |   }
[INFO] [stderr]    | |___^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_widget`
[INFO] [stderr]   --> src/ui/element.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 73 |   pub fn add_widget<T: Widget + 'static>(&mut self, child: T, ui: &mut Ui) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `draw`
[INFO] [stderr]   --> src/ui/element.rs:80:3
[INFO] [stderr]    |
[INFO] [stderr] 80 |   pub unsafe fn draw(&self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `buffer`
[INFO] [stderr]   --> src/ui/element.rs:96:3
[INFO] [stderr]    |
[INFO] [stderr] 96 |   fn buffer(&self, ui: &mut Ui) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `text`
[INFO] [stderr]  --> src/ui/button.rs:8:3
[INFO] [stderr]   |
[INFO] [stderr] 8 |   text: Option<String>
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/button.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   pub fn new(x: i32, y: i32, w: i32, h: i32) -> Button {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `text`
[INFO] [stderr]   --> src/ui/button.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   pub fn text<T: ToString>(mut self, text: T) -> Button {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `BUFFER_SIZE`
[INFO] [stderr]   --> src/ui/mod.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | const BUFFER_SIZE: usize = 256;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Ui`
[INFO] [stderr]   --> src/ui/mod.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct Ui {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ui/mod.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn new() -> Ui {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_widget`
[INFO] [stderr]   --> src/ui/mod.rs:83:3
[INFO] [stderr]    |
[INFO] [stderr] 83 |   pub fn add_widget<T: Widget + 'static>(&mut self, widget: T) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `draw`
[INFO] [stderr]   --> src/ui/mod.rs:88:3
[INFO] [stderr]    |
[INFO] [stderr] 88 |   pub fn draw(&self, viewport_w: i32, viewport_h: i32) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `configure_vao`
[INFO] [stderr]    --> src/ui/mod.rs:103:3
[INFO] [stderr]     |
[INFO] [stderr] 103 |   fn configure_vao(&mut self) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.cities.btmzcmmx-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4" "/opt/rustwide/target/debug/deps/cities-50c9006e997af1b4.2ti7qk2gfr0hgx6y.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libimage-fe5cfa25ed5abcfc.rlib" "/opt/rustwide/target/debug/deps/libscoped_threadpool-ff1f0b10ba75963d.rlib" "/opt/rustwide/target/debug/deps/libgif-8f7cd9f4b2848817.rlib" "/opt/rustwide/target/debug/deps/libcolor_quant-38da04927ac5d530.rlib" "/opt/rustwide/target/debug/deps/liblzw-7031afe4e8382d45.rlib" "/opt/rustwide/target/debug/deps/libjpeg_decoder-268a70da7035b598.rlib" "/opt/rustwide/target/debug/deps/librayon-9a152cdf190d1fab.rlib" "/opt/rustwide/target/debug/deps/librayon_core-419b4659bfe854a7.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-b14a1d8aa4a4801d.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-47d24117de3918be.rlib" "/opt/rustwide/target/debug/deps/libcoco-c909cabfaba2d085.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-b55856d1221159b0.rlib" "/opt/rustwide/target/debug/deps/libeither-d1565b2d8692dc15.rlib" "/opt/rustwide/target/debug/deps/libpng-84f5a71526d4092a.rlib" "/opt/rustwide/target/debug/deps/libdeflate-b386b575c9b879a7.rlib" "/opt/rustwide/target/debug/deps/libinflate-cbff2bfa0697f812.rlib" "/opt/rustwide/target/debug/deps/libadler32-fc3168be86b8358e.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-ca9613401f5048f0.rlib" "/opt/rustwide/target/debug/deps/libglfw-dbaa82a21e66559d.rlib" "/opt/rustwide/target/debug/deps/libnum-4ff45bb63331e148.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-cce42e05b898190e.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-1a0a85813129293e.rlib" "/opt/rustwide/target/debug/deps/librand-c8013248b2384fbf.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-4e193d1e26c5832a.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-739c46110ebaee65.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-6cad9498194d5f82.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-fec81b6a5c39f14f.rlib" "/opt/rustwide/target/debug/deps/libenum_primitive-7cca15e915697ad2.rlib" "/opt/rustwide/target/debug/deps/liblog-481af2284b34a247.rlib" "/opt/rustwide/target/debug/deps/libsemver-97b42a5d35637b9b.rlib" "/opt/rustwide/target/debug/deps/libnom-e5685e95769c6a0a.rlib" "/opt/rustwide/target/debug/deps/libgl-8b784736d166fa12.rlib" "/opt/rustwide/target/debug/deps/libfreetype-28a54e70c9c37904.rlib" "/opt/rustwide/target/debug/deps/libfreetype_sys-349ad6d3a25a69a2.rlib" "/opt/rustwide/target/debug/deps/libbitflags-98815c68dfc743de.rlib" "/opt/rustwide/target/debug/deps/libcgmath-3a4b63c323612cbc.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-2209945471a6fb12.rlib" "/opt/rustwide/target/debug/deps/librand-d299c8383f47b85b.rlib" "/opt/rustwide/target/debug/deps/liblibc-c6f4b66dac74a57b.rlib" "/opt/rustwide/target/debug/deps/libapprox-18d240db38cea552.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-db812c66f862af4c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e7871a21575d5ff7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-2f2c581bc0d759e6.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-35731cabc05dc8a0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-36477394541292db.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-8b706b170c1272d8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-801dbb3043ccf581.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-a32aa66ce6f72b21.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d00ea3bfb2bb6c00.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d2c6ebe88c3e113c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-df74f62f6bb60621.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2170473575daeedb.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1a08089bbddc4f51.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f8f562e5472ad5c3.rlib" "-Wl,-Bdynamic" "-lglfw" "-lX11" "-lGL" "-lXxf86vm" "-lXrandr" "-lXi" "-lXcursor" "-lXinerama" "-lfreetype" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lglfw
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `cities`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c5ca1a36fd572028091acd81ac700aad8944662336879593b88028fa877fa2fe"`
[INFO] running `"docker" "rm" "-f" "c5ca1a36fd572028091acd81ac700aad8944662336879593b88028fa877fa2fe"`
[INFO] [stdout] c5ca1a36fd572028091acd81ac700aad8944662336879593b88028fa877fa2fe