[INFO] cloning repository https://github.com/kankaanpaaverneri/X11Ui
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kankaanpaaverneri/X11Ui" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkankaanpaaverneri%2FX11Ui", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkankaanpaaverneri%2FX11Ui'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c947d94977a1e36b873dbab927e08846826b5b73
[INFO] testing kankaanpaaverneri/X11Ui against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkankaanpaaverneri%2FX11Ui" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kankaanpaaverneri/X11Ui
[INFO] finished tweaking git repo https://github.com/kankaanpaaverneri/X11Ui
[INFO] tweaked toml for git repo https://github.com/kankaanpaaverneri/X11Ui written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kankaanpaaverneri/X11Ui on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kankaanpaaverneri/X11Ui 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" "+1.99.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166
[INFO] running `Command { std: "docker" "start" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling x11rb-protocol v0.13.2
[INFO] [stderr]    Compiling gethostname v1.1.0
[INFO] [stderr]    Compiling x11rb v0.13.2
[INFO] [stderr]    Compiling x11ui v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/lib.rs:724:5
[INFO] [stdout]     |
[INFO] [stdout] 659 | /     loop {
[INFO] [stdout] 660 | |         let event = window.connection.wait_for_event()?;
[INFO] [stdout] 661 | |         let mut redraw = false;
[INFO] [stdout] 662 | |         let mut update = false;
[INFO] [stdout] ...   |
[INFO] [stdout] 723 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 724 |       window.connection.close_font(window.font_id)?;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut new_container = WidgetContainer::new(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `background_gc`
[INFO] [stdout]    --> src/lib.rs:457:17
[INFO] [stdout]     |
[INFO] [stdout] 457 |             let background_gc = self.gc_ids[1][1];
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_gc`
[INFO] [stdout]    --> src/lib.rs:458:17
[INFO] [stdout]     |
[INFO] [stdout] 458 |             let foreground_gc = self.gc_ids[1][0];
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_color`
[INFO] [stdout]    --> src/lib.rs:463:21
[INFO] [stdout]     |
[INFO] [stdout] 463 |                 let foreground_color = Color::get(fg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `background_gc`
[INFO] [stdout]    --> src/lib.rs:465:25
[INFO] [stdout]     |
[INFO] [stdout] 465 |                     let background_gc = self.gc_ids[fg][fg];
[INFO] [stdout]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_gc`
[INFO] [stdout]    --> src/lib.rs:466:25
[INFO] [stdout]     |
[INFO] [stdout] 466 |                     let foreground_gc = self.gc_ids[fg][0];
[INFO] [stdout]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_color`
[INFO] [stdout]    --> src/lib.rs:484:21
[INFO] [stdout]     |
[INFO] [stdout] 484 |                 let foreground_color = Color::get(fg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fg`
[INFO] [stdout]    --> src/lib.rs:503:17
[INFO] [stdout]     |
[INFO] [stdout] 503 |             for fg in 0..COLORS {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]    --> src/lib.rs:573:38
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stdout]     |                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `screen_number`
[INFO] [stdout]    --> src/lib.rs:573:54
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_screen_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]    --> src/lib.rs:667:29
[INFO] [stdout]     |
[INFO] [stdout] 667 |             Event::KeyPress(event) => {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `update` is never read
[INFO] [stdout]    --> src/lib.rs:717:13
[INFO] [stdout]     |
[INFO] [stdout] 717 |             update = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fg`
[INFO] [stdout]    --> src/lib.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         for fg in 0..COLORS {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bg`
[INFO] [stdout]    --> src/lib.rs:810:9
[INFO] [stdout]     |
[INFO] [stdout] 810 |     for bg in 0..COLORS {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_bg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_foreground_gc`
[INFO] [stdout]    --> src/lib.rs:834:33
[INFO] [stdout]     |
[INFO] [stdout] 834 |     let (default_background_gc, default_foreground_gc) = default_gc_values.get_default_button_contexts(window);
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `screen_number` and `foreground_color` are never read
[INFO] [stdout]   --> src/lib.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct XWindow<C: Connection> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  8 |     connection: C,
[INFO] [stdout]  9 |     screen_number: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     foreground_color: Color 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `text_color` is never read
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub struct Label {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     text_color: u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `widget_count` is never read
[INFO] [stdout]    --> src/lib.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct WidgetContainer<Message> {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 185 |     id: u128,
[INFO] [stdout] 186 |     widget_count: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_only_button_background_contexts` is never used
[INFO] [stdout]    --> src/lib.rs:455:8
[INFO] [stdout]     |
[INFO] [stdout] 439 | impl GraphicalContextMatrix {
[INFO] [stdout]     | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 455 |     fn get_only_button_background_contexts<C: Connection>(&self, window: &XWindow<C>) -> (Gcontext, Gcontext) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:590:5
[INFO] [stdout]     |
[INFO] [stdout] 590 |     generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 590 |     let _ = generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:714:13
[INFO] [stdout]     |
[INFO] [stdout] 714 |             generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 714 |             let _ = generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child0`
[INFO] [stdout]    --> src/main.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let child0 = root_container.create_container(2, 20, ContainerType::Vertical);
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child0`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ChangeLayout`, `ChangeText`, and `AddK` are never constructed
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | enum UserMessage {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 28 |     ChangeLayout,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 29 |     ChangeText(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     AddK,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Application {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 34 |     data: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example1` is never used
[INFO] [stdout]   --> src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn example1() -> WidgetContainer<UserMessage> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example2` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn example2() -> WidgetContainer<UserMessage> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example3` is never used
[INFO] [stdout]    --> src/main.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn example3() -> WidgetContainer<UserMessage> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example4` is never used
[INFO] [stdout]    --> src/main.rs:170:4
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn example4(app: &Application) -> WidgetContainer<UserMessage> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 14.46s
[INFO] running `Command { std: "docker" "inspect" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/lib.rs:724:5
[INFO] [stdout]     |
[INFO] [stdout] 659 | /     loop {
[INFO] [stdout] 660 | |         let event = window.connection.wait_for_event()?;
[INFO] [stdout] 661 | |         let mut redraw = false;
[INFO] [stdout] 662 | |         let mut update = false;
[INFO] [stdout] ...   |
[INFO] [stdout] 723 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 724 |       window.connection.close_font(window.font_id)?;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut new_container = WidgetContainer::new(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `background_gc`
[INFO] [stdout]    --> src/lib.rs:457:17
[INFO] [stdout]     |
[INFO] [stdout] 457 |             let background_gc = self.gc_ids[1][1];
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_gc`
[INFO] [stdout]    --> src/lib.rs:458:17
[INFO] [stdout]     |
[INFO] [stdout] 458 |             let foreground_gc = self.gc_ids[1][0];
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_color`
[INFO] [stdout]    --> src/lib.rs:463:21
[INFO] [stdout]     |
[INFO] [stdout] 463 |                 let foreground_color = Color::get(fg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling x11ui v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `background_gc`
[INFO] [stdout]    --> src/lib.rs:465:25
[INFO] [stdout]     |
[INFO] [stdout] 465 |                     let background_gc = self.gc_ids[fg][fg];
[INFO] [stdout]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_gc`
[INFO] [stdout]    --> src/lib.rs:466:25
[INFO] [stdout]     |
[INFO] [stdout] 466 |                     let foreground_gc = self.gc_ids[fg][0];
[INFO] [stdout]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_color`
[INFO] [stdout]    --> src/lib.rs:484:21
[INFO] [stdout]     |
[INFO] [stdout] 484 |                 let foreground_color = Color::get(fg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fg`
[INFO] [stdout]    --> src/lib.rs:503:17
[INFO] [stdout]     |
[INFO] [stdout] 503 |             for fg in 0..COLORS {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]    --> src/lib.rs:573:38
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stdout]     |                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `screen_number`
[INFO] [stdout]    --> src/lib.rs:573:54
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_screen_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]    --> src/lib.rs:667:29
[INFO] [stdout]     |
[INFO] [stdout] 667 |             Event::KeyPress(event) => {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `update` is never read
[INFO] [stdout]    --> src/lib.rs:717:13
[INFO] [stdout]     |
[INFO] [stdout] 717 |             update = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fg`
[INFO] [stdout]    --> src/lib.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         for fg in 0..COLORS {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bg`
[INFO] [stdout]    --> src/lib.rs:810:9
[INFO] [stdout]     |
[INFO] [stdout] 810 |     for bg in 0..COLORS {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_bg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_foreground_gc`
[INFO] [stdout]    --> src/lib.rs:834:33
[INFO] [stdout]     |
[INFO] [stdout] 834 |     let (default_background_gc, default_foreground_gc) = default_gc_values.get_default_button_contexts(window);
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `screen_number` and `foreground_color` are never read
[INFO] [stdout]   --> src/lib.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct XWindow<C: Connection> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  8 |     connection: C,
[INFO] [stdout]  9 |     screen_number: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     foreground_color: Color 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `text_color` is never read
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub struct Label {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     text_color: u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `widget_count` is never read
[INFO] [stdout]    --> src/lib.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct WidgetContainer<Message> {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 185 |     id: u128,
[INFO] [stdout] 186 |     widget_count: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_only_button_background_contexts` is never used
[INFO] [stdout]    --> src/lib.rs:455:8
[INFO] [stdout]     |
[INFO] [stdout] 439 | impl GraphicalContextMatrix {
[INFO] [stdout]     | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 455 |     fn get_only_button_background_contexts<C: Connection>(&self, window: &XWindow<C>) -> (Gcontext, Gcontext) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:590:5
[INFO] [stdout]     |
[INFO] [stdout] 590 |     generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 590 |     let _ = generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:714:13
[INFO] [stdout]     |
[INFO] [stdout] 714 |             generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 714 |             let _ = generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child0`
[INFO] [stdout]    --> src/main.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let child0 = root_container.create_container(2, 20, ContainerType::Vertical);
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child0`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ChangeLayout`, `ChangeText`, and `AddK` are never constructed
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | enum UserMessage {
[INFO] [stdout]    |      ----------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 28 |     ChangeLayout,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 29 |     ChangeText(String),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     AddK,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Application {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 34 |     data: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example1` is never used
[INFO] [stdout]   --> src/main.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn example1() -> WidgetContainer<UserMessage> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example2` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn example2() -> WidgetContainer<UserMessage> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example3` is never used
[INFO] [stdout]    --> src/main.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn example3() -> WidgetContainer<UserMessage> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `example4` is never used
[INFO] [stdout]    --> src/main.rs:170:4
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn example4(app: &Application) -> WidgetContainer<UserMessage> {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/lib.rs:724:5
[INFO] [stdout]     |
[INFO] [stdout] 659 | /     loop {
[INFO] [stdout] 660 | |         let event = window.connection.wait_for_event()?;
[INFO] [stdout] 661 | |         let mut redraw = false;
[INFO] [stdout] 662 | |         let mut update = false;
[INFO] [stdout] ...   |
[INFO] [stdout] 723 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 724 |       window.connection.close_font(window.font_id)?;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:239:13
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let mut new_container = WidgetContainer::new(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `background_gc`
[INFO] [stdout]    --> src/lib.rs:457:17
[INFO] [stdout]     |
[INFO] [stdout] 457 |             let background_gc = self.gc_ids[1][1];
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_gc`
[INFO] [stdout]    --> src/lib.rs:458:17
[INFO] [stdout]     |
[INFO] [stdout] 458 |             let foreground_gc = self.gc_ids[1][0];
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_color`
[INFO] [stdout]    --> src/lib.rs:463:21
[INFO] [stdout]     |
[INFO] [stdout] 463 |                 let foreground_color = Color::get(fg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `background_gc`
[INFO] [stdout]    --> src/lib.rs:465:25
[INFO] [stdout]     |
[INFO] [stdout] 465 |                     let background_gc = self.gc_ids[fg][fg];
[INFO] [stdout]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_gc`
[INFO] [stdout]    --> src/lib.rs:466:25
[INFO] [stdout]     |
[INFO] [stdout] 466 |                     let foreground_gc = self.gc_ids[fg][0];
[INFO] [stdout]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foreground_color`
[INFO] [stdout]    --> src/lib.rs:484:21
[INFO] [stdout]     |
[INFO] [stdout] 484 |                 let foreground_color = Color::get(fg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fg`
[INFO] [stdout]    --> src/lib.rs:503:17
[INFO] [stdout]     |
[INFO] [stdout] 503 |             for fg in 0..COLORS {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `connection`
[INFO] [stdout]    --> src/lib.rs:573:38
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stdout]     |                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `screen_number`
[INFO] [stdout]    --> src/lib.rs:573:54
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_screen_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]    --> src/lib.rs:667:29
[INFO] [stdout]     |
[INFO] [stdout] 667 |             Event::KeyPress(event) => {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `update` is never read
[INFO] [stdout]    --> src/lib.rs:717:13
[INFO] [stdout]     |
[INFO] [stdout] 717 |             update = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fg`
[INFO] [stdout]    --> src/lib.rs:788:13
[INFO] [stdout]     |
[INFO] [stdout] 788 |         for fg in 0..COLORS {
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bg`
[INFO] [stdout]    --> src/lib.rs:810:9
[INFO] [stdout]     |
[INFO] [stdout] 810 |     for bg in 0..COLORS {
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_bg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_foreground_gc`
[INFO] [stdout]    --> src/lib.rs:834:33
[INFO] [stdout]     |
[INFO] [stdout] 834 |     let (default_background_gc, default_foreground_gc) = default_gc_values.get_default_button_contexts(window);
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_foreground_gc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `screen_number` and `foreground_color` are never read
[INFO] [stdout]   --> src/lib.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct XWindow<C: Connection> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout]  8 |     connection: C,
[INFO] [stdout]  9 |     screen_number: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     foreground_color: Color 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `text_color` is never read
[INFO] [stdout]    --> src/lib.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub struct Label {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 164 |     text_color: u32,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `widget_count` is never read
[INFO] [stdout]    --> src/lib.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct WidgetContainer<Message> {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 185 |     id: u128,
[INFO] [stdout] 186 |     widget_count: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_only_button_background_contexts` is never used
[INFO] [stdout]    --> src/lib.rs:455:8
[INFO] [stdout]     |
[INFO] [stdout] 439 | impl GraphicalContextMatrix {
[INFO] [stdout]     | --------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 455 |     fn get_only_button_background_contexts<C: Connection>(&self, window: &XWindow<C>) -> (Gcontext, Gcontext) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:590:5
[INFO] [stdout]     |
[INFO] [stdout] 590 |     generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 590 |     let _ = generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:714:13
[INFO] [stdout]     |
[INFO] [stdout] 714 |             generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 714 |             let _ = generate_ids_for_widgets(&mut container);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/lib.rs:724:5
[INFO] [stderr]     |
[INFO] [stderr] 659 | /     loop {
[INFO] [stderr] 660 | |         let event = window.connection.wait_for_event()?;
[INFO] [stderr] 661 | |         let mut redraw = false;
[INFO] [stderr] 662 | |         let mut update = false;
[INFO] [stderr] ...   |
[INFO] [stderr] 723 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 724 |       window.connection.close_font(window.font_id)?;
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:239:13
[INFO] [stderr]     |
[INFO] [stderr] 239 |         let mut new_container = WidgetContainer::new(
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `background_gc`
[INFO] [stderr]    --> src/lib.rs:457:17
[INFO] [stderr]     |
[INFO] [stderr] 457 |             let background_gc = self.gc_ids[1][1];
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foreground_gc`
[INFO] [stderr]    --> src/lib.rs:458:17
[INFO] [stderr]     |
[INFO] [stderr] 458 |             let foreground_gc = self.gc_ids[1][0];
[INFO] [stderr]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foreground_color`
[INFO] [stderr]    --> src/lib.rs:463:21
[INFO] [stderr]     |
[INFO] [stderr] 463 |                 let foreground_color = Color::get(fg);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `background_gc`
[INFO] [stderr]    --> src/lib.rs:465:25
[INFO] [stderr]     |
[INFO] [stderr] 465 |                     let background_gc = self.gc_ids[fg][fg];
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_gc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foreground_gc`
[INFO] [stderr]    --> src/lib.rs:466:25
[INFO] [stderr]     |
[INFO] [stderr] 466 |                     let foreground_gc = self.gc_ids[fg][0];
[INFO] [stderr]     |                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_gc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `foreground_color`
[INFO] [stderr]    --> src/lib.rs:484:21
[INFO] [stderr]     |
[INFO] [stderr] 484 |                 let foreground_color = Color::get(fg);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_foreground_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fg`
[INFO] [stderr]    --> src/lib.rs:503:17
[INFO] [stderr]     |
[INFO] [stderr] 503 |             for fg in 0..COLORS {
[INFO] [stderr]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `connection`
[INFO] [stderr]    --> src/lib.rs:573:38
[INFO] [stderr]     |
[INFO] [stderr] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_connection`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `screen_number`
[INFO] [stderr]    --> src/lib.rs:573:54
[INFO] [stderr]     |
[INFO] [stderr] 573 | fn init_window_colors<C: Connection>(connection: &C, screen_number: usize, background_color: Color) -> (Color, Color) {
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_screen_number`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `event`
[INFO] [stderr]    --> src/lib.rs:667:29
[INFO] [stderr]     |
[INFO] [stderr] 667 |             Event::KeyPress(event) => {
[INFO] [stderr]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `update` is never read
[INFO] [stderr]    --> src/lib.rs:717:13
[INFO] [stderr]     |
[INFO] [stderr] 717 |             update = false;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fg`
[INFO] [stderr]    --> src/lib.rs:788:13
[INFO] [stderr]     |
[INFO] [stderr] 788 |         for fg in 0..COLORS {
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_fg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bg`
[INFO] [stderr]    --> src/lib.rs:810:9
[INFO] [stderr]     |
[INFO] [stderr] 810 |     for bg in 0..COLORS {
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_bg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `default_foreground_gc`
[INFO] [stderr]    --> src/lib.rs:834:33
[INFO] [stderr]     |
[INFO] [stderr] 834 |     let (default_background_gc, default_foreground_gc) = default_gc_values.get_default_button_contexts(window);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_foreground_gc`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `screen_number` and `foreground_color` are never read
[INFO] [stderr]   --> src/lib.rs:9:5
[INFO] [stderr]    |
[INFO] [stderr]  7 | pub struct XWindow<C: Connection> {
[INFO] [stderr]    |            ------- fields in this struct
[INFO] [stderr]  8 |     connection: C,
[INFO] [stderr]  9 |     screen_number: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 13 |     foreground_color: Color 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `text_color` is never read
[INFO] [stderr]    --> src/lib.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 157 | pub struct Label {
[INFO] [stderr]     |            ----- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 164 |     text_color: u32,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `widget_count` is never read
[INFO] [stderr]    --> src/lib.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub struct WidgetContainer<Message> {
[INFO] [stderr]     |            --------------- field in this struct
[INFO] [stderr] 185 |     id: u128,
[INFO] [stderr] 186 |     widget_count: usize,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_only_button_background_contexts` is never used
[INFO] [stderr]    --> src/lib.rs:455:8
[INFO] [stderr]     |
[INFO] [stderr] 439 | impl GraphicalContextMatrix {
[INFO] [stderr]     | --------------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 455 |     fn get_only_button_background_contexts<C: Connection>(&self, window: &XWindow<C>) -> (Gcontext, Gcontext) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:590:5
[INFO] [stderr]     |
[INFO] [stderr] 590 |     generate_ids_for_widgets(&mut container);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 590 |     let _ = generate_ids_for_widgets(&mut container);
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:714:13
[INFO] [stderr]     |
[INFO] [stderr] 714 |             generate_ids_for_widgets(&mut container);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 714 |             let _ = generate_ids_for_widgets(&mut container);
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `x11ui` (lib) generated 22 warnings (run `cargo fix --lib -p x11ui` to apply 14 suggestions)
[INFO] [stderr] warning: `x11ui` (lib test) generated 22 warnings (22 duplicates)
[INFO] [stderr] warning: unused variable: `child0`
[INFO] [stderr]    --> src/main.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     let child0 = root_container.create_container(2, 20, ContainerType::Vertical);
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_child0`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `ChangeLayout`, `ChangeText`, and `AddK` are never constructed
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr]  9 | enum UserMessage {
[INFO] [stderr]    |      ----------- variants in this enum
[INFO] [stderr] ...
[INFO] [stderr] 28 |     ChangeLayout,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 29 |     ChangeText(String),
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 30 |     AddK,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `data` is never read
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | struct Application {
[INFO] [stderr]    |        ----------- field in this struct
[INFO] [stderr] 34 |     data: i32,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `example1` is never used
[INFO] [stderr]   --> src/main.rs:52:4
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn example1() -> WidgetContainer<UserMessage> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `example2` is never used
[INFO] [stderr]   --> src/main.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn example2() -> WidgetContainer<UserMessage> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `example3` is never used
[INFO] [stderr]    --> src/main.rs:130:4
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn example3() -> WidgetContainer<UserMessage> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `example4` is never used
[INFO] [stderr]    --> src/main.rs:170:4
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn example4(app: &Application) -> WidgetContainer<UserMessage> {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `x11ui` (bin "x11ui" test) generated 7 warnings (run `cargo fix --bin "x11ui" -p x11ui --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/deps/x11ui-f224100d01c8e3b6)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/x11ui-b98a7be94d5e9df0)
[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] [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] [stderr]    Doc-tests x11ui
[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" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166", kill_on_drop: false }`
[INFO] [stdout] 6b6a4d2a7db2cb379253bea666b5a0c9fe73d89c995c1870180e31690d3dc166
