[INFO] cloning repository https://github.com/MasaNiTake/rimze
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MasaNiTake/rimze" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasaNiTake%2Frimze", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasaNiTake%2Frimze'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 262a55b7d73c52ddc33845307d506ee6619a6103
[INFO] checking MasaNiTake/rimze against master#b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd for pr-155499
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMasaNiTake%2Frimze" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MasaNiTake/rimze
[INFO] finished tweaking git repo https://github.com/MasaNiTake/rimze
[INFO] tweaked toml for git repo https://github.com/MasaNiTake/rimze written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MasaNiTake/rimze on toolchain b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MasaNiTake/rimze 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" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rfd v0.15.4
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33486af6cb459d67e3069492f757bed61942e35166819c6de5af5702a18042ff
[INFO] running `Command { std: "docker" "start" "-a" "33486af6cb459d67e3069492f757bed61942e35166819c6de5af5702a18042ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33486af6cb459d67e3069492f757bed61942e35166819c6de5af5702a18042ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33486af6cb459d67e3069492f757bed61942e35166819c6de5af5702a18042ff", kill_on_drop: false }`
[INFO] [stdout] 33486af6cb459d67e3069492f757bed61942e35166819c6de5af5702a18042ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b2f1ccf524a3a4cf9c34545167cc23b659cf1cbd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40abdf230c888d45390ce52997b9864c128a900e08b2da76746d0e39de3d2c6d
[INFO] running `Command { std: "docker" "start" "-a" "40abdf230c888d45390ce52997b9864c128a900e08b2da76746d0e39de3d2c6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
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[INFO] [stdout] warning: unused imports: `Receiver` and `Sender`
[INFO] [stdout]  --> src/main.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stdout]   |                       ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/content.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, VecDeque, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context` and `self`
[INFO] [stdout]  --> src/content.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use eframe::egui::{self, ColorImage, Context};
[INFO] [stdout]   |                    ^^^^              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/settings.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Directory`, `SortOrder`, and `SortType`
[INFO] [stdout]   --> src/main.rs:12:46
[INFO] [stdout]    |
[INFO] [stdout] 12 | use content::{CacheKey, ComicFile, FileType, SortType, SortOrder, Directory, ImageExtension, FileExtension};
[INFO] [stdout]    |                                              ^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `eframe::egui::menu::bar`: Use `egui::MenuBar::new().ui(` instead
[INFO] [stdout]   --> src/view.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |             egui::menu::bar(ui, |ui| {
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Ui::close_menu`: Use `ui.close()` or `ui.close_kind(UiKind::Menu)` instead
[INFO] [stdout]   --> src/view.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |                         ui.close_menu();
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Ui::close_menu`: Use `ui.close()` or `ui.close_kind(UiKind::Menu)` instead
[INFO] [stdout]   --> src/view.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |                         ui.close_menu();
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Context::screen_rect`: screen_rect has been split into viewport_rect() and content_rect(). You likely should use content_rect()
[INFO] [stdout]    --> src/view.rs:134:32
[INFO] [stdout]     |
[INFO] [stdout] 134 |         let screen_width = ctx.screen_rect().width();
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver` and `Sender`
[INFO] [stdout]  --> src/main.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stdout]   |                       ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/content.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{HashMap, VecDeque, HashSet};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context` and `self`
[INFO] [stdout]  --> src/content.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use eframe::egui::{self, ColorImage, Context};
[INFO] [stdout]   |                    ^^^^              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/settings.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Directory`, `SortOrder`, and `SortType`
[INFO] [stdout]   --> src/main.rs:12:46
[INFO] [stdout]    |
[INFO] [stdout] 12 | use content::{CacheKey, ComicFile, FileType, SortType, SortOrder, Directory, ImageExtension, FileExtension};
[INFO] [stdout]    |                                              ^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::style::WidgetVisuals::rounding`: Renamed to corner_radius
[INFO] [stdout]    --> src/view.rs:192:72
[INFO] [stdout]     |
[INFO] [stdout] 192 | ...                   ui.painter().rect_filled(rect, visuals.rounding(), visuals.bg_fill);
[INFO] [stdout]     |                                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `eframe::egui::menu::bar`: Use `egui::MenuBar::new().ui(` instead
[INFO] [stdout]   --> src/view.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |             egui::menu::bar(ui, |ui| {
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Context::screen_rect`: screen_rect has been split into viewport_rect() and content_rect(). You likely should use content_rect()
[INFO] [stdout]    --> src/main.rs:346:35
[INFO] [stdout]     |
[INFO] [stdout] 346 |             let screen_rect = ctx.screen_rect();
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Ui::close_menu`: Use `ui.close()` or `ui.close_kind(UiKind::Menu)` instead
[INFO] [stdout]   --> src/view.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |                         ui.close_menu();
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Ui::close_menu`: Use `ui.close()` or `ui.close_kind(UiKind::Menu)` instead
[INFO] [stdout]   --> src/view.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |                         ui.close_menu();
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Context::screen_rect`: screen_rect has been split into viewport_rect() and content_rect(). You likely should use content_rect()
[INFO] [stdout]    --> src/view.rs:134:32
[INFO] [stdout]     |
[INFO] [stdout] 134 |         let screen_width = ctx.screen_rect().width();
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::style::WidgetVisuals::rounding`: Renamed to corner_radius
[INFO] [stdout]    --> src/view.rs:192:72
[INFO] [stdout]     |
[INFO] [stdout] 192 | ...                   ui.painter().rect_filled(rect, visuals.rounding(), visuals.bg_fill);
[INFO] [stdout]     |                                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `eframe::egui::Context::screen_rect`: screen_rect has been split into viewport_rect() and content_rect(). You likely should use content_rect()
[INFO] [stdout]    --> src/main.rs:346:35
[INFO] [stdout]     |
[INFO] [stdout] 346 |             let screen_rect = ctx.screen_rect();
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `focus_idx` is never read
[INFO] [stdout]   --> src/thumbnail.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |             let mut focus_idx: usize = 0;
[INFO] [stdout]    |                                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 36 |                                 focus_idx = 0;
[INFO] [stdout]    |                                 ------------- `focus_idx` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/main.rs:689:44
[INFO] [stdout]     |
[INFO] [stdout] 689 |                         CacheKey::ZipEntry(path, index) => {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/main.rs:689:50
[INFO] [stdout]     |
[INFO] [stdout] 689 |                         CacheKey::ZipEntry(path, index) => {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comic_loader`
[INFO] [stdout]    --> src/main.rs:684:21
[INFO] [stdout]     |
[INFO] [stdout] 684 |                 let comic_loader = self.comic_loader.clone();
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comic_loader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `as_slice` and `as_str` are never used
[INFO] [stdout]   --> src/content.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl ImageExtension {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 24 |     /// 画像ファイル拡張子のスライスを返します。
[INFO] [stdout] 25 |     pub fn as_slice() -> &'static [ImageExtension] {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn as_str(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `runtime` and `image_cache` are never read
[INFO] [stdout]    --> src/content.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 247 | pub struct ComicLoader {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] 248 |     /// 非同期タスクを実行するためのTokioランタイム。
[INFO] [stdout] 249 |     runtime: Arc<Runtime>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 250 |     /// 画像データをキャッシュするためのミューテックス保護されたキャッシュ。
[INFO] [stdout] 251 |     image_cache: Arc<Mutex<ImageCache>>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Stop` is never constructed
[INFO] [stdout]   --> src/thumbnail.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum ThumbnailRequest {
[INFO] [stdout]    |          ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     Stop,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `stop` is never used
[INFO] [stdout]   --> src/thumbnail.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl ThumbnailWorker {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn stop(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `focus_idx` is never read
[INFO] [stdout]   --> src/thumbnail.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 26 |             let mut focus_idx: usize = 0;
[INFO] [stdout]    |                                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 36 |                                 focus_idx = 0;
[INFO] [stdout]    |                                 ------------- `focus_idx` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/main.rs:689:44
[INFO] [stdout]     |
[INFO] [stdout] 689 |                         CacheKey::ZipEntry(path, index) => {
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]    --> src/main.rs:689:50
[INFO] [stdout]     |
[INFO] [stdout] 689 |                         CacheKey::ZipEntry(path, index) => {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `comic_loader`
[INFO] [stdout]    --> src/main.rs:684:21
[INFO] [stdout]     |
[INFO] [stdout] 684 |                 let comic_loader = self.comic_loader.clone();
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_comic_loader`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `as_slice` and `as_str` are never used
[INFO] [stdout]   --> src/content.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl ImageExtension {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 24 |     /// 画像ファイル拡張子のスライスを返します。
[INFO] [stdout] 25 |     pub fn as_slice() -> &'static [ImageExtension] {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn as_str(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `runtime` and `image_cache` are never read
[INFO] [stdout]    --> src/content.rs:249:5
[INFO] [stdout]     |
[INFO] [stdout] 247 | pub struct ComicLoader {
[INFO] [stdout]     |            ----------- fields in this struct
[INFO] [stdout] 248 |     /// 非同期タスクを実行するためのTokioランタイム。
[INFO] [stdout] 249 |     runtime: Arc<Runtime>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 250 |     /// 画像データをキャッシュするためのミューテックス保護されたキャッシュ。
[INFO] [stdout] 251 |     image_cache: Arc<Mutex<ImageCache>>,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Stop` is never constructed
[INFO] [stdout]   --> src/thumbnail.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum ThumbnailRequest {
[INFO] [stdout]    |          ---------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     Stop,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `stop` is never used
[INFO] [stdout]   --> src/thumbnail.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl ThumbnailWorker {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn stop(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 01s
[INFO] running `Command { std: "docker" "inspect" "40abdf230c888d45390ce52997b9864c128a900e08b2da76746d0e39de3d2c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40abdf230c888d45390ce52997b9864c128a900e08b2da76746d0e39de3d2c6d", kill_on_drop: false }`
[INFO] [stdout] 40abdf230c888d45390ce52997b9864c128a900e08b2da76746d0e39de3d2c6d
