[INFO] cloning repository https://github.com/lyuha/viewing_system.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lyuha/viewing_system.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyuha%2Fviewing_system.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyuha%2Fviewing_system.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32d3a798e45753f2134cd8dd927c93499f5c171f
[INFO] testing lyuha/viewing_system.rs against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flyuha%2Fviewing_system.rs" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lyuha/viewing_system.rs on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lyuha/viewing_system.rs
[INFO] finished tweaking git repo https://github.com/lyuha/viewing_system.rs
[INFO] tweaked toml for git repo https://github.com/lyuha/viewing_system.rs written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lyuha/viewing_system.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c38b25da92565be8c40728e44c856f7ef6b5ffa9c4a9e6363ef0b87ad82220da
[INFO] running `Command { std: "docker" "start" "-a" "c38b25da92565be8c40728e44c856f7ef6b5ffa9c4a9e6363ef0b87ad82220da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c38b25da92565be8c40728e44c856f7ef6b5ffa9c4a9e6363ef0b87ad82220da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c38b25da92565be8c40728e44c856f7ef6b5ffa9c4a9e6363ef0b87ad82220da", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 855567ea2f335ba27774d08a3f5b77a8692a15cc41025efe7593b2363c95eb31
[INFO] running `Command { std: "docker" "start" "-a" "855567ea2f335ba27774d08a3f5b77a8692a15cc41025efe7593b2363c95eb31", kill_on_drop: false }`
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[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling unreachable v0.1.1
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[INFO] [stderr]    Compiling deflate v0.7.18
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[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling wayland-kbd v0.13.1
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[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
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[INFO] [stderr]    Compiling winit v0.12.0
[INFO] [stderr]    Compiling pistoncore-input v0.21.0
[INFO] [stderr]    Compiling conrod v0.60.0
[INFO] [stderr]    Compiling viewing_system v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `widget` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:29
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                        ------ the item `widget` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Positionable` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:59
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                                          ------------ the item `Positionable` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sizeable` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:73
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                                -------- the item `Sizeable` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Widget` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:83
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                                                        ------ the item `Widget` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                                                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:57:93
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let screen = image_to_texture2d(image::RgbaImage::from_fn(SCREEN_WIDTH, HEIGHT, |x, y| {
[INFO] [stdout]    |                                                                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `view_mode` is never read
[INFO] [stdout]    --> src/main.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             view_mode = if is_perspective {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MARGIN` is never used
[INFO] [stdout]    --> src/main.rs:179:15
[INFO] [stdout]     |
[INFO] [stdout] 179 |         const MARGIN: conrod::Scalar = 30.0;
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:196:44
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 .unwrap_or_else(|e| panic!(e));
[INFO] [stdout]     |                                            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 .unwrap_or_else(|e| panic!("{}", e));
[INFO] [stdout]     |                                            +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 .unwrap_or_else(|e| std::panic::panic_any(e));
[INFO] [stdout]     |                                     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.00s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nfd v0.0.4, rustc-serialize v0.3.24, syn v0.13.11, syn v0.14.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "855567ea2f335ba27774d08a3f5b77a8692a15cc41025efe7593b2363c95eb31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855567ea2f335ba27774d08a3f5b77a8692a15cc41025efe7593b2363c95eb31", kill_on_drop: false }`
[INFO] [stdout] 855567ea2f335ba27774d08a3f5b77a8692a15cc41025efe7593b2363c95eb31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e34963ff2851f2f15f9c096181b2b6595058a3177f9208b051145fee97dbb5b5
[INFO] running `Command { std: "docker" "start" "-a" "e34963ff2851f2f15f9c096181b2b6595058a3177f9208b051145fee97dbb5b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling viewing_system v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `widget` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:29
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                        ------ the item `widget` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Positionable` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:59
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                                          ------------ the item `Positionable` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sizeable` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:73
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                                -------- the item `Sizeable` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                                                                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Widget` is imported redundantly
[INFO] [stdout]    --> src/main.rs:140:83
[INFO] [stdout]     |
[INFO] [stdout] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stdout]     |                                                        ------ the item `Widget` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stdout]     |                                                                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:57:93
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let screen = image_to_texture2d(image::RgbaImage::from_fn(SCREEN_WIDTH, HEIGHT, |x, y| {
[INFO] [stdout]    |                                                                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `view_mode` is never read
[INFO] [stdout]    --> src/main.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             view_mode = if is_perspective {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MARGIN` is never used
[INFO] [stdout]    --> src/main.rs:179:15
[INFO] [stdout]     |
[INFO] [stdout] 179 |         const MARGIN: conrod::Scalar = 30.0;
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:196:44
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 .unwrap_or_else(|e| panic!(e));
[INFO] [stdout]     |                                            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 .unwrap_or_else(|e| panic!("{}", e));
[INFO] [stdout]     |                                            +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 .unwrap_or_else(|e| std::panic::panic_any(e));
[INFO] [stdout]     |                                     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nfd v0.0.4, rustc-serialize v0.3.24, syn v0.13.11, syn v0.14.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "e34963ff2851f2f15f9c096181b2b6595058a3177f9208b051145fee97dbb5b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e34963ff2851f2f15f9c096181b2b6595058a3177f9208b051145fee97dbb5b5", kill_on_drop: false }`
[INFO] [stdout] e34963ff2851f2f15f9c096181b2b6595058a3177f9208b051145fee97dbb5b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 07434deedcdc89362ef12290ec58e7b0da082a0989efa5b78c0da42f91148426
[INFO] running `Command { std: "docker" "start" "-a" "07434deedcdc89362ef12290ec58e7b0da082a0989efa5b78c0da42f91148426", kill_on_drop: false }`
[INFO] [stderr] warning: the item `widget` is imported redundantly
[INFO] [stderr]    --> src/main.rs:140:29
[INFO] [stderr]     |
[INFO] [stderr] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stderr]     |                        ------ the item `widget` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stderr]     |                             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Positionable` is imported redundantly
[INFO] [stderr]    --> src/main.rs:140:59
[INFO] [stderr]     |
[INFO] [stderr] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stderr]     |                                          ------------ the item `Positionable` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Sizeable` is imported redundantly
[INFO] [stderr]    --> src/main.rs:140:73
[INFO] [stderr]     |
[INFO] [stderr] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stderr]     |                                -------- the item `Sizeable` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stderr]     |                                                                         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Widget` is imported redundantly
[INFO] [stderr]    --> src/main.rs:140:83
[INFO] [stderr]     |
[INFO] [stderr] 15  |     use conrod::{self, widget, Sizeable, Positionable, Widget};
[INFO] [stderr]     |                                                        ------ the item `Widget` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 140 |         use conrod::{color, widget, Colorable, Labelable, Positionable, Sizeable, Widget};
[INFO] [stderr]     |                                                                                   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> src/main.rs:57:93
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let screen = image_to_texture2d(image::RgbaImage::from_fn(SCREEN_WIDTH, HEIGHT, |x, y| {
[INFO] [stderr]    |                                                                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `view_mode` is never read
[INFO] [stderr]    --> src/main.rs:231:13
[INFO] [stderr]     |
[INFO] [stderr] 231 |             view_mode = if is_perspective {
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `MARGIN` is never used
[INFO] [stderr]    --> src/main.rs:179:15
[INFO] [stderr]     |
[INFO] [stderr] 179 |         const MARGIN: conrod::Scalar = 30.0;
[INFO] [stderr]     |               ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/main.rs:196:44
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 .unwrap_or_else(|e| panic!(e));
[INFO] [stderr]     |                                            ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 .unwrap_or_else(|e| panic!("{}", e));
[INFO] [stderr]     |                                            +++++
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]     |
[INFO] [stderr] 196 |                 .unwrap_or_else(|e| std::panic::panic_any(e));
[INFO] [stderr]     |                                     ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] warning: `viewing_system` (bin "viewing_system" test) generated 8 warnings (run `cargo fix --bin "viewing_system" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nfd v0.0.4, rustc-serialize v0.3.24, syn v0.13.11, syn v0.14.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/viewing_system-fcd3868df519e2ec)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "07434deedcdc89362ef12290ec58e7b0da082a0989efa5b78c0da42f91148426", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07434deedcdc89362ef12290ec58e7b0da082a0989efa5b78c0da42f91148426", kill_on_drop: false }`
[INFO] [stdout] 07434deedcdc89362ef12290ec58e7b0da082a0989efa5b78c0da42f91148426
