[INFO] fetching crate conrod_example_shared 0.76.1...
[INFO] testing conrod_example_shared-0.76.1 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate conrod_example_shared 0.76.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate conrod_example_shared 0.76.1
[INFO] finished tweaking crates.io crate conrod_example_shared 0.76.1
[INFO] tweaked toml for crates.io crate conrod_example_shared 0.76.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate conrod_example_shared 0.76.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 100 packages to highest compatible versions
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.10.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `conrod_example_shared` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b
[INFO] running `Command { std: "docker" "start" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", 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" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", 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" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `conrod_example_shared` (manifest) generated 1 warning
[INFO] [stderr]    Compiling libc v0.2.191
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cfg-if v1.0.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling lazy_static v1.5.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling xml-rs v0.8.29
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-ident v1.0.27
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling num-integer v0.1.47
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling quick-xml v0.22.0
[INFO] [stderr]    Compiling zerocopy v0.8.63
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling xdg v2.5.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling log v0.4.34
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]    Compiling xcb v0.10.1
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling wayland-commons v0.23.6
[INFO] [stderr]    Compiling syn v3.0.9
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling piston-float v1.0.1
[INFO] [stderr]    Compiling piston-viewport v1.0.2
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling x11-clipboard v0.5.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling num-iter v0.1.46
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling daggy v0.5.0
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling pistoncore-input v1.0.1
[INFO] [stderr]    Compiling conrod_derive v0.76.1
[INFO] [stderr]    Compiling smithay-client-toolkit v0.6.6
[INFO] [stderr]    Compiling smithay-clipboard v0.4.0
[INFO] [stderr]    Compiling copypasta v0.6.3
[INFO] [stderr]    Compiling conrod_core v0.76.1
[INFO] [stderr]    Compiling conrod_example_shared v0.76.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:277:19
[INFO] [stdout]     |
[INFO] [stdout] 277 |       for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 278 | |         .label("BALL XY")
[INFO] [stdout] 279 | |         .wh_of(ids.button)
[INFO] [stdout] 280 | |         .align_middle_y_of(ids.button)
[INFO] [stdout] 281 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 282 | |         .parent(ids.canvas)
[INFO] [stdout] 283 | |         .set(ids.xy_pad, 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] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout] 277 +     while let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout] 277 +     if let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[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]    --> src/lib.rs:329:21
[INFO] [stdout]     |
[INFO] [stdout] 329 |       for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 330 | |         .down(60.0)
[INFO] [stdout] 331 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 332 | |         .w_h(160.0, 40.0)
[INFO] [stdout] 333 | |         .label("F R E Q")
[INFO] [stdout] 334 | |         .set(ids.number_dialer, ui)
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout] 329 +     while let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout] 329 +     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 2m 07s
[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 6`
[INFO] running `Command { std: "docker" "inspect" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", 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" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `conrod_example_shared` (manifest) generated 1 warning
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:277:19
[INFO] [stdout]     |
[INFO] [stdout] 277 |       for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 278 | |         .label("BALL XY")
[INFO] [stdout] 279 | |         .wh_of(ids.button)
[INFO] [stdout] 280 | |         .align_middle_y_of(ids.button)
[INFO] [stdout] 281 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 282 | |         .parent(ids.canvas)
[INFO] [stdout] 283 | |         .set(ids.xy_pad, 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] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout] 277 +     while let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout] 277 +     if let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[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]    --> src/lib.rs:329:21
[INFO] [stdout]     |
[INFO] [stdout] 329 |       for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 330 | |         .down(60.0)
[INFO] [stdout] 331 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 332 | |         .w_h(160.0, 40.0)
[INFO] [stdout] 333 | |         .label("F R E Q")
[INFO] [stdout] 334 | |         .set(ids.number_dialer, ui)
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout] 329 +     while let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout] 329 +     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling conrod_example_shared v0.76.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]    --> src/lib.rs:277:19
[INFO] [stdout]     |
[INFO] [stdout] 277 |       for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 278 | |         .label("BALL XY")
[INFO] [stdout] 279 | |         .wh_of(ids.button)
[INFO] [stdout] 280 | |         .align_middle_y_of(ids.button)
[INFO] [stdout] 281 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 282 | |         .parent(ids.canvas)
[INFO] [stdout] 283 | |         .set(ids.xy_pad, 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] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout] 277 +     while let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stdout] 277 +     if let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[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]    --> src/lib.rs:329:21
[INFO] [stdout]     |
[INFO] [stdout] 329 |       for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 330 | |         .down(60.0)
[INFO] [stdout] 331 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 332 | |         .w_h(160.0, 40.0)
[INFO] [stdout] 333 | |         .label("F R E Q")
[INFO] [stdout] 334 | |         .set(ids.number_dialer, ui)
[INFO] [stdout]     | |___________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]     |
[INFO] [stdout] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout] 329 +     while let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]     |
[INFO] [stdout] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout] 329 +     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.44s
[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 6`
[INFO] running `Command { std: "docker" "inspect" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", 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" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `conrod_example_shared` (manifest) generated 1 warning
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:277:19
[INFO] [stderr]     |
[INFO] [stderr] 277 |       for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stderr]     |  ___________________^
[INFO] [stderr] 278 | |         .label("BALL XY")
[INFO] [stderr] 279 | |         .wh_of(ids.button)
[INFO] [stderr] 280 | |         .align_middle_y_of(ids.button)
[INFO] [stderr] 281 | |         .align_middle_x_of(ids.canvas)
[INFO] [stderr] 282 | |         .parent(ids.canvas)
[INFO] [stderr] 283 | |         .set(ids.xy_pad, ui)
[INFO] [stderr]     | |____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stderr] 277 +     while let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 277 -     for (x, y) in widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stderr] 277 +     if let Some((x, y)) = widget::XYPad::new(app.ball_xy[0], min_x, max_x, app.ball_xy[1], min_y, max_y)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stderr]    --> src/lib.rs:329:21
[INFO] [stderr]     |
[INFO] [stderr] 329 |       for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 330 | |         .down(60.0)
[INFO] [stderr] 331 | |         .align_middle_x_of(ids.canvas)
[INFO] [stderr] 332 | |         .w_h(160.0, 40.0)
[INFO] [stderr] 333 | |         .label("F R E Q")
[INFO] [stderr] 334 | |         .set(ids.number_dialer, ui)
[INFO] [stderr]     | |___________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: to check pattern in a loop use `while let`
[INFO] [stderr]     |
[INFO] [stderr] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stderr] 329 +     while let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stderr]     |
[INFO] [stderr] help: consider using `if let` to clear intent
[INFO] [stderr]     |
[INFO] [stderr] 329 -     for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stderr] 329 +     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `conrod_example_shared` (lib) generated 2 warnings
[INFO] [stderr] warning: `conrod_example_shared` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.11s
[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 6`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/build/conrod_example_shared/969868401492837f/out/conrod_example_shared-969868401492837f)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests conrod_example_shared
[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] running `Command { std: "docker" "inspect" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b", kill_on_drop: false }`
[INFO] [stdout] 4f9a819072d148e25519c93649b64a8daf05494ce06bdb84b4837e29acad359b
