[INFO] fetching crate conrod_glium 0.76.1...
[INFO] checking conrod_glium-0.76.1 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393-1
[INFO] extracting crate conrod_glium 0.76.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate conrod_glium 0.76.1 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate conrod_glium 0.76.1
[INFO] finished tweaking crates.io crate conrod_glium 0.76.1
[INFO] tweaked toml for crates.io crate conrod_glium 0.76.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate conrod_glium 0.76.1 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" "+5518eaa946291f00471af8b254b2a1715f234882" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 084f31e45e1a482377e6c4a745fd5fc5cd407187c9d99df5e9680a49b21851bf
[INFO] running `Command { std: "docker" "start" "-a" "084f31e45e1a482377e6c4a745fd5fc5cd407187c9d99df5e9680a49b21851bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "084f31e45e1a482377e6c4a745fd5fc5cd407187c9d99df5e9680a49b21851bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084f31e45e1a482377e6c4a745fd5fc5cd407187c9d99df5e9680a49b21851bf", kill_on_drop: false }`
[INFO] [stdout] 084f31e45e1a482377e6c4a745fd5fc5cd407187c9d99df5e9680a49b21851bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f958908acb83c52152442295834407097dbc5ddb8fc7884fbfc1059790813b81
[INFO] running `Command { std: "docker" "start" "-a" "f958908acb83c52152442295834407097dbc5ddb8fc7884fbfc1059790813b81", kill_on_drop: false }`
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[INFO] [stderr]     Checking copypasta v0.6.3
[INFO] [stderr]     Checking conrod_core v0.76.1
[INFO] [stderr]     Checking glutin v0.25.1
[INFO] [stderr]     Checking conrod_example_shared v0.76.1
[INFO] [stderr]     Checking conrod_glium v0.76.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> examples/image_button.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> examples/custom_widget.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/range_slider.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/all_winit_glium_threaded.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/counter.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/image.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> examples/old_demo.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/text_edit.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/primitives.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/plot_path.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/hello_world.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/list_select.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/text_edit.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |       for edit in widget::TextEdit::new(demo_text)
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 129 | |         .color(color::WHITE)
[INFO] [stdout] 130 | |         .padded_w_of(ids.canvas, 20.0)
[INFO] [stdout] 131 | |         .mid_top_of(ids.canvas)
[INFO] [stdout] ...   |
[INFO] [stdout] 134 | |         //.restrict_to_height(false) // Let the height grow infinitely and scroll.
[INFO] [stdout] 135 | |         .set(ids.text_edit, ui)
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 128 |     while let Some(edit) = widget::TextEdit::new(demo_text)
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~    ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 128 |     if let Some(edit) = widget::TextEdit::new(demo_text)
[INFO] [stdout]     |     ~~~~~~~~~~~~    ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/triangles.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/canvas.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:326:26
[INFO] [stdout]     |
[INFO] [stdout] 326 |               for color in widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 327 | |                 .$position(25.0)
[INFO] [stdout] 328 | |                 .w_h(40.0, app.v_slider_height)
[INFO] [stdout] 329 | |                 .color($color)
[INFO] [stdout] ...   |
[INFO] [stdout] 332 | |                 .label_color(color::WHITE)
[INFO] [stdout] 333 | |                 .set(ids.$slider_id, ui)
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 340 |       color_slider!(red_slider, red, color::rgb(0.75, 0.3, 0.3), set_red, down);
[INFO] [stdout]     |       ------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `color_slider` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 326 |             while let Some(color) = widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~     ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 326 |             if let Some(color) = widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |             ~~~~~~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:326:26
[INFO] [stdout]     |
[INFO] [stdout] 326 |               for color in widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 327 | |                 .$position(25.0)
[INFO] [stdout] 328 | |                 .w_h(40.0, app.v_slider_height)
[INFO] [stdout] 329 | |                 .color($color)
[INFO] [stdout] ...   |
[INFO] [stdout] 332 | |                 .label_color(color::WHITE)
[INFO] [stdout] 333 | |                 .set(ids.$slider_id, ui)
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 341 | /     color_slider!(
[INFO] [stdout] 342 | |         green_slider,
[INFO] [stdout] 343 | |         green,
[INFO] [stdout] 344 | |         color::rgb(0.3, 0.75, 0.3),
[INFO] [stdout] 345 | |         set_green,
[INFO] [stdout] 346 | |         right
[INFO] [stdout] 347 | |     );
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `color_slider` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 326 |             while let Some(color) = widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~     ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 326 |             if let Some(color) = widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |             ~~~~~~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:326:26
[INFO] [stdout]     |
[INFO] [stdout] 326 |               for color in widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |  __________________________^
[INFO] [stdout] 327 | |                 .$position(25.0)
[INFO] [stdout] 328 | |                 .w_h(40.0, app.v_slider_height)
[INFO] [stdout] 329 | |                 .color($color)
[INFO] [stdout] ...   |
[INFO] [stdout] 332 | |                 .label_color(color::WHITE)
[INFO] [stdout] 333 | |                 .set(ids.$slider_id, ui)
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout] ...
[INFO] [stdout] 348 | /     color_slider!(
[INFO] [stdout] 349 | |         blue_slider,
[INFO] [stdout] 350 | |         blue,
[INFO] [stdout] 351 | |         color::rgb(0.3, 0.3, 0.75),
[INFO] [stdout] 352 | |         set_blue,
[INFO] [stdout] 353 | |         right
[INFO] [stdout] 354 | |     );
[INFO] [stdout]     | |_____- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `color_slider` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 326 |             while let Some(color) = widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~     ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 326 |             if let Some(color) = widget::Slider::new(value, 0.0, 1.0)
[INFO] [stdout]     |             ~~~~~~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:357:23
[INFO] [stdout]     |
[INFO] [stdout] 357 |       for new_height in widget::NumberDialer::new(app.v_slider_height, 25.0, 250.0, 1)
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 358 | |         .w_h(260.0, 60.0)
[INFO] [stdout] 359 | |         .right_from(shown_widget, 30.0)
[INFO] [stdout] 360 | |         .color(app.bg_color.invert())
[INFO] [stdout] ...   |
[INFO] [stdout] 363 | |         .label_color(app.bg_color.invert().plain_contrast())
[INFO] [stdout] 364 | |         .set(ids.slider_height, ui)
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 357 |     while let Some(new_height) = widget::NumberDialer::new(app.v_slider_height, 25.0, 250.0, 1)
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~          ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 357 |     if let Some(new_height) = widget::NumberDialer::new(app.v_slider_height, 25.0, 250.0, 1)
[INFO] [stdout]     |     ~~~~~~~~~~~~          ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:370:22
[INFO] [stdout]     |
[INFO] [stdout] 370 |       for new_width in widget::NumberDialer::new(app.border_width, 0.0, 15.0, 2)
[INFO] [stdout]     |  ______________________^
[INFO] [stdout] 371 | |         .w_h(260.0, 60.0)
[INFO] [stdout] 372 | |         .down(20.0)
[INFO] [stdout] 373 | |         .color(app.bg_color.plain_contrast().invert())
[INFO] [stdout] ...   |
[INFO] [stdout] 377 | |         .label_color(app.bg_color.plain_contrast())
[INFO] [stdout] 378 | |         .set(ids.border_width, ui)
[INFO] [stdout]     | |__________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 370 |     while let Some(new_width) = widget::NumberDialer::new(app.border_width, 0.0, 15.0, 2)
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~         ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 370 |     if let Some(new_width) = widget::NumberDialer::new(app.border_width, 0.0, 15.0, 2)
[INFO] [stdout]     |     ~~~~~~~~~~~~         ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:414:25
[INFO] [stdout]     |
[INFO] [stdout] 414 |       for selected_idx in widget::DropDownList::new(&app.ddl_colors, app.selected_idx)
[INFO] [stdout]     |  _________________________^
[INFO] [stdout] 415 | |         .w_h(150.0, 40.0)
[INFO] [stdout] 416 | |         .right_from(ids.slider_height, 30.0) // Position right from widget 6 by 50 pixels.
[INFO] [stdout] 417 | |         .max_visible_items(3)
[INFO] [stdout] ...   |
[INFO] [stdout] 423 | |         .scrollbar_on_top()
[INFO] [stdout] 424 | |         .set(ids.color_select, ui)
[INFO] [stdout]     | |__________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 414 |     while let Some(selected_idx) = widget::DropDownList::new(&app.ddl_colors, app.selected_idx)
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~            ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 414 |     if let Some(selected_idx) = widget::DropDownList::new(&app.ddl_colors, app.selected_idx)
[INFO] [stdout]     |     ~~~~~~~~~~~~            ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/old_demo.rs:438:19
[INFO] [stdout]     |
[INFO] [stdout] 438 |       for (x, y) in widget::XYPad::new(
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 439 | |         app.circle_pos[0],
[INFO] [stdout] 440 | |         -75.0,
[INFO] [stdout] 441 | |         75.0, // x range.
[INFO] [stdout] ...   |
[INFO] [stdout] 454 | |     .line_thickness(2.0)
[INFO] [stdout] 455 | |     .set(ids.circle_position, ui)
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 438 |     while let Some((x, y)) = widget::XYPad::new(
[INFO] [stdout]     |     ~~~~~~~~~~~~~~~      ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 438 |     if let Some((x, y)) = widget::XYPad::new(
[INFO] [stdout]     |     ~~~~~~~~~~~~      ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> examples/custom_widget.rs:335:31
[INFO] [stdout]     |
[INFO] [stdout] 335 |                   for _click in CircularButton::new()
[INFO] [stdout]     |  _______________________________^
[INFO] [stdout] 336 | |                     .color(conrod_core::color::rgb(0.0, 0.3, 0.1))
[INFO] [stdout] 337 | |                     .middle_of(ids.background)
[INFO] [stdout] 338 | |                     .w_h(256.0, 256.0)
[INFO] [stdout] ...   |
[INFO] [stdout] 343 | |                     // drawn when we call Ui::draw.
[INFO] [stdout] 344 | |                     .set(ids.circle_button, ui)
[INFO] [stdout]     | |_______________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 while let Some(_click) = CircularButton::new()
[INFO] [stdout]     |                 ~~~~~~~~~~~~~~~      ~~~
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 335 |                 if let Some(_click) = CircularButton::new()
[INFO] [stdout]     |                 ~~~~~~~~~~~~      ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> examples/graph.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_id`
[INFO] [stdout]    --> examples/graph.rs:187:35
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 NodeEvent::Remove(node_id) => {}
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_socket`
[INFO] [stdout]    --> examples/graph.rs:193:37
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 EdgeEvent::AddStart(node_socket) => {}
[INFO] [stdout]     |                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_socket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> examples/graph.rs:194:34
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 EdgeEvent::Add { start, end } => {}
[INFO] [stdout]     |                                  ^^^^^ help: try ignoring the field: `start: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> examples/graph.rs:194:41
[INFO] [stdout]     |
[INFO] [stdout] 194 |                 EdgeEvent::Add { start, end } => {}
[INFO] [stdout]     |                                         ^^^ help: try ignoring the field: `end: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_socket`
[INFO] [stdout]    --> examples/graph.rs:195:38
[INFO] [stdout]     |
[INFO] [stdout] 195 |                 EdgeEvent::Cancelled(node_socket) => {}
[INFO] [stdout]     |                                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_socket`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> examples/graph.rs:196:37
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 EdgeEvent::Remove { start, end } => {}
[INFO] [stdout]     |                                     ^^^^^ help: try ignoring the field: `start: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> examples/graph.rs:196:44
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 EdgeEvent::Remove { start, end } => {}
[INFO] [stdout]     |                                            ^^^ help: try ignoring the field: `end: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f958908acb83c52152442295834407097dbc5ddb8fc7884fbfc1059790813b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f958908acb83c52152442295834407097dbc5ddb8fc7884fbfc1059790813b81", kill_on_drop: false }`
[INFO] [stdout] f958908acb83c52152442295834407097dbc5ddb8fc7884fbfc1059790813b81
