[INFO] fetching crate conrod_example_shared 0.76.1...
[INFO] checking conrod_example_shared-0.76.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate conrod_example_shared 0.76.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate conrod_example_shared 0.76.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe319473c2bdc91cc8a459f700988c94b4a6182b77c93ec6b54abea3b3f36cdd
[INFO] running `Command { std: "docker" "start" "-a" "fe319473c2bdc91cc8a459f700988c94b4a6182b77c93ec6b54abea3b3f36cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe319473c2bdc91cc8a459f700988c94b4a6182b77c93ec6b54abea3b3f36cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe319473c2bdc91cc8a459f700988c94b4a6182b77c93ec6b54abea3b3f36cdd", kill_on_drop: false }`
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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_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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caed5b158dc6fcac2522d7c436361643200273bfc3b1ef3a9c4b1e7c9ff042c1
[INFO] running `Command { std: "docker" "start" "-a" "caed5b158dc6fcac2522d7c436361643200273bfc3b1ef3a9c4b1e7c9ff042c1", kill_on_drop: false }`
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[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling xml-rs v0.8.20
[INFO] [stderr]    Compiling nix v0.14.1
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[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking byteorder v1.5.0
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[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking xdg v2.5.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling num-rational v0.3.2
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[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking piston-float v1.0.1
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[INFO] [stderr]    Compiling quick-xml v0.22.0
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[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking line_drawing v0.7.0
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[INFO] [stderr]    Compiling serde_derive v1.0.197
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[INFO] [stderr]     Checking rusttype v0.7.9
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[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking num v0.3.1
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[INFO] [stderr]    Compiling conrod_derive v0.76.1
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[INFO] [stderr]     Checking conrod_core v0.76.1
[INFO] [stderr]     Checking 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 |     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 |     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 |     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 |     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[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: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 |     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 |     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 |     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 |     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |     ~~~~~~~~~~~~        ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.20s
[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" "caed5b158dc6fcac2522d7c436361643200273bfc3b1ef3a9c4b1e7c9ff042c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caed5b158dc6fcac2522d7c436361643200273bfc3b1ef3a9c4b1e7c9ff042c1", kill_on_drop: false }`
[INFO] [stdout] caed5b158dc6fcac2522d7c436361643200273bfc3b1ef3a9c4b1e7c9ff042c1
[INFO] checking conrod_example_shared-0.76.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate conrod_example_shared 0.76.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate conrod_example_shared 0.76.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a9e67756bcaa60bcf76f84f83673f938be3c8dd3100f9fe92cfa7211cf0408c
[INFO] running `Command { std: "docker" "start" "-a" "1a9e67756bcaa60bcf76f84f83673f938be3c8dd3100f9fe92cfa7211cf0408c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a9e67756bcaa60bcf76f84f83673f938be3c8dd3100f9fe92cfa7211cf0408c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a9e67756bcaa60bcf76f84f83673f938be3c8dd3100f9fe92cfa7211cf0408c", kill_on_drop: false }`
[INFO] [stdout] 1a9e67756bcaa60bcf76f84f83673f938be3c8dd3100f9fe92cfa7211cf0408c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fe4b0fa5ed02816879f605b5495568b18cf93590a39cb81d6cf211d2eae0c20
[INFO] running `Command { std: "docker" "start" "-a" "0fe4b0fa5ed02816879f605b5495568b18cf93590a39cb81d6cf211d2eae0c20", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling xml-rs v0.8.20
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]     Checking xdg v2.5.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking piston-float v1.0.1
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking piston-viewport v1.0.2
[INFO] [stderr]    Compiling quick-xml v0.22.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking daggy v0.5.0
[INFO] [stderr]    Compiling xcb v0.10.1
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking x11-clipboard v0.5.3
[INFO] [stderr]    Compiling conrod_derive v0.76.1
[INFO] [stderr]     Checking pistoncore-input v1.0.1
[INFO] [stderr]     Checking smithay-client-toolkit v0.6.6
[INFO] [stderr]     Checking smithay-clipboard v0.4.0
[INFO] [stderr]     Checking copypasta v0.6.3
[INFO] [stderr]     Checking conrod_core v0.76.1
[INFO] [stderr]     Checking 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 |     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 |     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 |     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 |     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[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: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 |     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 |     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 |     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 |     if let Some(new_freq) = widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |     ~~~~~~~~~~~~        ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.97s
[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" "0fe4b0fa5ed02816879f605b5495568b18cf93590a39cb81d6cf211d2eae0c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fe4b0fa5ed02816879f605b5495568b18cf93590a39cb81d6cf211d2eae0c20", kill_on_drop: false }`
[INFO] [stdout] 0fe4b0fa5ed02816879f605b5495568b18cf93590a39cb81d6cf211d2eae0c20