[INFO] cloning repository https://github.com/TianZonglin/Pointctl-web
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TianZonglin/Pointctl-web" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTianZonglin%2FPointctl-web", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTianZonglin%2FPointctl-web'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e70caa804e67f4f5a3fd0da4e49b9572035f7724
[INFO] checking TianZonglin/Pointctl-web against master#b389b0ab72cb0aa9acf4df0ae0c0e12090782da9 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTianZonglin%2FPointctl-web" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
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[INFO] validating manifest of git repo https://github.com/TianZonglin/Pointctl-web on toolchain b389b0ab72cb0aa9acf4df0ae0c0e12090782da9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/TianZonglin/Pointctl-web
[INFO] finished tweaking git repo https://github.com/TianZonglin/Pointctl-web
[INFO] tweaked toml for git repo https://github.com/TianZonglin/Pointctl-web written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TianZonglin/Pointctl-web 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" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/gijs-s/kiss3d`
[INFO] [stderr]     Updating git repository `https://github.com/gijs-s/vpsearch`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9664b4e6befa7b11f5f179aefa752c0ee6381c735739283aed730a70abaf51f
[INFO] running `Command { std: "docker" "start" "-a" "e9664b4e6befa7b11f5f179aefa752c0ee6381c735739283aed730a70abaf51f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9664b4e6befa7b11f5f179aefa752c0ee6381c735739283aed730a70abaf51f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9664b4e6befa7b11f5f179aefa752c0ee6381c735739283aed730a70abaf51f", kill_on_drop: false }`
[INFO] [stdout] e9664b4e6befa7b11f5f179aefa752c0ee6381c735739283aed730a70abaf51f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a37c7ff3dc7e9523ceab5d587828dcf978e9c6e421653f0f4237c9a51366915
[INFO] running `Command { std: "docker" "start" "-a" "9a37c7ff3dc7e9523ceab5d587828dcf978e9c6e421653f0f4237c9a51366915", kill_on_drop: false }`
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[INFO] [stderr]    Compiling libc v0.2.93
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[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]     Checking nalgebra v0.25.4
[INFO] [stderr]     Checking pistoncore-input v1.0.0
[INFO] [stderr]     Checking winit v0.24.0
[INFO] [stderr]     Checking conrod_core v0.71.0
[INFO] [stderr]     Checking glutin v0.26.0
[INFO] [stderr]     Checking ncollide3d v0.28.0
[INFO] [stderr]     Checking kiss3d v0.30.0 (https://github.com/gijs-s/kiss3d?branch=master#7d3d2e10)
[INFO] [stderr]     Checking pointctl v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `count::CountBasedNeighborhood` and `radius::RadiusBasedNeighborhood`
[INFO] [stdout]   --> src/search/definitions/vptree/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use self::{count::CountBasedNeighborhood, radius::RadiusBasedNeighborhood};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `count::CountBasedNeighborhood` and `radius::RadiusBasedNeighborhood`
[INFO] [stdout]   --> src/search/definitions/vptree/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use self::{count::CountBasedNeighborhood, radius::RadiusBasedNeighborhood};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_index` is never used
[INFO] [stdout]   --> src/search/definitions/data.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub trait Indexed {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 33 |     fn get_index(&self) -> u32;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_index` is never used
[INFO] [stdout]   --> src/search/definitions/data.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub trait Indexed {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 33 |     fn get_index(&self) -> u32;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings 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/conrod.rs:311:19
[INFO] [stdout]     |
[INFO] [stdout] 311 |       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] 312 | |         .label("BALL XY")
[INFO] [stdout] 313 | |         .wh_of(ids.button)
[INFO] [stdout] 314 | |         .align_middle_y_of(ids.button)
[INFO] [stdout] 315 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 316 | |         .parent(ids.canvas)
[INFO] [stdout] 317 | |         .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] 311 |     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] 311 |     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]    --> examples/conrod.rs:363:21
[INFO] [stdout]     |
[INFO] [stdout] 363 |       for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 364 | |         .down(60.0)
[INFO] [stdout] 365 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 366 | |         .w_h(160.0, 40.0)
[INFO] [stdout] 367 | |         .label("F R E Q")
[INFO] [stdout] 368 | |         .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] 363 |     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] 363 |     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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 09s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[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" "9a37c7ff3dc7e9523ceab5d587828dcf978e9c6e421653f0f4237c9a51366915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a37c7ff3dc7e9523ceab5d587828dcf978e9c6e421653f0f4237c9a51366915", kill_on_drop: false }`
[INFO] [stdout] 9a37c7ff3dc7e9523ceab5d587828dcf978e9c6e421653f0f4237c9a51366915
[INFO] checking TianZonglin/Pointctl-web against try#16d823b1c168ce52c66ccc00dfd686f775a45c65 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTianZonglin%2FPointctl-web" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
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[INFO] validating manifest of git repo https://github.com/TianZonglin/Pointctl-web on toolchain 16d823b1c168ce52c66ccc00dfd686f775a45c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/TianZonglin/Pointctl-web
[INFO] finished tweaking git repo https://github.com/TianZonglin/Pointctl-web
[INFO] tweaked toml for git repo https://github.com/TianZonglin/Pointctl-web written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TianZonglin/Pointctl-web 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" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c504e0289177ae416e754fc3e78501b3bef09095b409a61de84290f58cfe3a6d
[INFO] running `Command { std: "docker" "start" "-a" "c504e0289177ae416e754fc3e78501b3bef09095b409a61de84290f58cfe3a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c504e0289177ae416e754fc3e78501b3bef09095b409a61de84290f58cfe3a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c504e0289177ae416e754fc3e78501b3bef09095b409a61de84290f58cfe3a6d", kill_on_drop: false }`
[INFO] [stdout] c504e0289177ae416e754fc3e78501b3bef09095b409a61de84290f58cfe3a6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16d823b1c168ce52c66ccc00dfd686f775a45c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 289dcbd9555ad65b4a8cd5583808a57b22632b67e4075d0ea5dba5ed5487ea4d
[INFO] running `Command { std: "docker" "start" "-a" "289dcbd9555ad65b4a8cd5583808a57b22632b67e4075d0ea5dba5ed5487ea4d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling conrod_derive v0.71.0
[INFO] [stderr]     Checking wayland-egl v0.28.5
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[INFO] [stderr]     Checking vpsearch v2.0.1 (https://github.com/gijs-s/vpsearch?branch=rust#59d388ad)
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[INFO] [stdout] warning: unused imports: `count::CountBasedNeighborhood` and `radius::RadiusBasedNeighborhood`
[INFO] [stdout]   --> src/search/definitions/vptree/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use self::{count::CountBasedNeighborhood, radius::RadiusBasedNeighborhood};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `count::CountBasedNeighborhood` and `radius::RadiusBasedNeighborhood`
[INFO] [stdout]   --> src/search/definitions/vptree/mod.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use self::{count::CountBasedNeighborhood, radius::RadiusBasedNeighborhood};
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_index` is never used
[INFO] [stdout]   --> src/search/definitions/data.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub trait Indexed {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 33 |     fn get_index(&self) -> u32;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_index` is never used
[INFO] [stdout]   --> src/search/definitions/data.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub trait Indexed {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 33 |     fn get_index(&self) -> u32;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings 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/conrod.rs:311:19
[INFO] [stdout]     |
[INFO] [stdout] 311 |       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] 312 | |         .label("BALL XY")
[INFO] [stdout] 313 | |         .wh_of(ids.button)
[INFO] [stdout] 314 | |         .align_middle_y_of(ids.button)
[INFO] [stdout] 315 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 316 | |         .parent(ids.canvas)
[INFO] [stdout] 317 | |         .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] 311 |     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] 311 |     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]    --> examples/conrod.rs:363:21
[INFO] [stdout]     |
[INFO] [stdout] 363 |       for new_freq in widget::NumberDialer::new(app.sine_frequency, min, max, decimal_precision)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout] 364 | |         .down(60.0)
[INFO] [stdout] 365 | |         .align_middle_x_of(ids.canvas)
[INFO] [stdout] 366 | |         .w_h(160.0, 40.0)
[INFO] [stdout] 367 | |         .label("F R E Q")
[INFO] [stdout] 368 | |         .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] 363 |     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] 363 |     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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 46s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v6.1.2
[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" "289dcbd9555ad65b4a8cd5583808a57b22632b67e4075d0ea5dba5ed5487ea4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "289dcbd9555ad65b4a8cd5583808a57b22632b67e4075d0ea5dba5ed5487ea4d", kill_on_drop: false }`
[INFO] [stdout] 289dcbd9555ad65b4a8cd5583808a57b22632b67e4075d0ea5dba5ed5487ea4d
