[INFO] fetching crate doo 0.1.5...
[INFO] checking doo-0.1.5 against master#e1613686e0efc80a1a18b1263625450a8de3fb04 for pr-154492
[INFO] extracting crate doo 0.1.5 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate doo 0.1.5
[INFO] finished tweaking crates.io crate doo 0.1.5
[INFO] tweaked toml for crates.io crate doo 0.1.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate doo 0.1.5 on toolchain e1613686e0efc80a1a18b1263625450a8de3fb04
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate doo 0.1.5 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" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1440f3693ae4cbea89d639f4b39699e72a61813316dec0ac5745926b6bd7bd8f
[INFO] running `Command { std: "docker" "start" "-a" "1440f3693ae4cbea89d639f4b39699e72a61813316dec0ac5745926b6bd7bd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1440f3693ae4cbea89d639f4b39699e72a61813316dec0ac5745926b6bd7bd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1440f3693ae4cbea89d639f4b39699e72a61813316dec0ac5745926b6bd7bd8f", kill_on_drop: false }`
[INFO] [stdout] 1440f3693ae4cbea89d639f4b39699e72a61813316dec0ac5745926b6bd7bd8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+e1613686e0efc80a1a18b1263625450a8de3fb04" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56ae9df3c9f3ee770c6afbb5e21acf3fe85d8eebd517bf45dc047e5a4a48a77b
[INFO] running `Command { std: "docker" "start" "-a" "56ae9df3c9f3ee770c6afbb5e21acf3fe85d8eebd517bf45dc047e5a4a48a77b", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `cc`
[INFO] [stdout]    --> src/main.rs:100:16
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn new(cc: &eframe::CreationContext<'_>, rx: Receiver<()>) -> Self {
[INFO] [stdout]     |                ^^ help: if this is intentional, prefix it with an underscore: `_cc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:148:41
[INFO] [stdout]     |
[INFO] [stdout] 148 | ...                   let mut rt = RichText::new("Do awesome things with this app")
[INFO] [stdout]     |                           ----^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:125:25
[INFO] [stdout]     |
[INFO] [stdout] 125 |                     let mut f = Frame::default()
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/main.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 | ...                   let res = ui.vertical(|ui| {
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:125:25
[INFO] [stdout]     |
[INFO] [stdout] 125 |                     let mut f = Frame::default()
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cc`
[INFO] [stdout]    --> src/main.rs:100:16
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn new(cc: &eframe::CreationContext<'_>, rx: Receiver<()>) -> Self {
[INFO] [stdout]     |                ^^ help: if this is intentional, prefix it with an underscore: `_cc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:305:33
[INFO] [stdout]     |
[INFO] [stdout] 305 | ...                   _ => {}
[INFO] [stdout]     |                       ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:305:33
[INFO] [stdout]     |
[INFO] [stdout] 251 | ...                   BarMode::Normal => {
[INFO] [stdout]     |                       --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 258 | ...                   BarMode::Calculator => {
[INFO] [stdout]     |                       ------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 288 | ...                   BarMode::WebSearch => {
[INFO] [stdout]     |                       ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 305 | ...                   _ => {}
[INFO] [stdout]     |                       ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:148:41
[INFO] [stdout]     |
[INFO] [stdout] 148 | ...                   let mut rt = RichText::new("Do awesome things with this app")
[INFO] [stdout]     |                           ----^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:125:25
[INFO] [stdout]     |
[INFO] [stdout] 125 |                     let mut f = Frame::default()
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:259:41
[INFO] [stdout]     |
[INFO] [stdout] 259 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:289:41
[INFO] [stdout]     |
[INFO] [stdout] 289 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:342:38
[INFO] [stdout]     |
[INFO] [stdout] 342 | ...                   |e, u| {},
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/main.rs:342:41
[INFO] [stdout]     |
[INFO] [stdout] 342 | ...                   |e, u| {},
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/main.rs:315:27
[INFO] [stdout]     |
[INFO] [stdout] 315 |                 if let Ok(msg) = self.rx.try_recv() {
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:259:41
[INFO] [stdout]     |
[INFO] [stdout] 259 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:289:41
[INFO] [stdout]     |
[INFO] [stdout] 289 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loading` is never read
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Doo {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 88 |     pub loading: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `COOL_GRAY` is never used
[INFO] [stdout]  --> src/utils.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const COOL_GRAY: &str = "#8895B3";
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::small_button` that must be used
[INFO] [stdout]    --> src/main.rs:144:41
[INFO] [stdout]     |
[INFO] [stdout] 144 | ...                   ui.small_button("c");
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: You should check if the user clicked this with `if ui.small_button(…).clicked() { … } 
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |                                         let _ = ui.small_button("c");
[INFO] [stdout]     |                                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::small_button` that must be used
[INFO] [stdout]    --> src/main.rs:145:41
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   ui.small_button("shift");
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: You should check if the user clicked this with `if ui.small_button(…).clicked() { … } 
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 145 |                                         let _ = ui.small_button("shift");
[INFO] [stdout]     |                                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::small_button` that must be used
[INFO] [stdout]    --> src/main.rs:146:41
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   ui.small_button("x");
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: You should check if the user clicked this with `if ui.small_button(…).clicked() { … } 
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 146 |                                         let _ = ui.small_button("x");
[INFO] [stdout]     |                                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]    --> src/main.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 | ...                   let res = ui.vertical(|ui| {
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:125:25
[INFO] [stdout]     |
[INFO] [stdout] 125 |                     let mut f = Frame::default()
[INFO] [stdout]     |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:305:33
[INFO] [stdout]     |
[INFO] [stdout] 305 | ...                   _ => {}
[INFO] [stdout]     |                       ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:305:33
[INFO] [stdout]     |
[INFO] [stdout] 251 | ...                   BarMode::Normal => {
[INFO] [stdout]     |                       --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 258 | ...                   BarMode::Calculator => {
[INFO] [stdout]     |                       ------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 288 | ...                   BarMode::WebSearch => {
[INFO] [stdout]     |                       ------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 305 | ...                   _ => {}
[INFO] [stdout]     |                       ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:259:41
[INFO] [stdout]     |
[INFO] [stdout] 259 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:289:41
[INFO] [stdout]     |
[INFO] [stdout] 289 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ----^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:342:38
[INFO] [stdout]     |
[INFO] [stdout] 342 | ...                   |e, u| {},
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/main.rs:342:41
[INFO] [stdout]     |
[INFO] [stdout] 342 | ...                   |e, u| {},
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/main.rs:315:27
[INFO] [stdout]     |
[INFO] [stdout] 315 |                 if let Ok(msg) = self.rx.try_recv() {
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:259:41
[INFO] [stdout]     |
[INFO] [stdout] 259 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/main.rs:289:41
[INFO] [stdout]     |
[INFO] [stdout] 289 | ...                   let mut f = Frame::default().show(ui, |ui| {
[INFO] [stdout]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `loading` is never read
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Doo {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 88 |     pub loading: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `COOL_GRAY` is never used
[INFO] [stdout]  --> src/utils.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const COOL_GRAY: &str = "#8895B3";
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::small_button` that must be used
[INFO] [stdout]    --> src/main.rs:144:41
[INFO] [stdout]     |
[INFO] [stdout] 144 | ...                   ui.small_button("c");
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: You should check if the user clicked this with `if ui.small_button(…).clicked() { … } 
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 144 |                                         let _ = ui.small_button("c");
[INFO] [stdout]     |                                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::small_button` that must be used
[INFO] [stdout]    --> src/main.rs:145:41
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   ui.small_button("shift");
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: You should check if the user clicked this with `if ui.small_button(…).clicked() { … } 
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 145 |                                         let _ = ui.small_button("shift");
[INFO] [stdout]     |                                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Ui::small_button` that must be used
[INFO] [stdout]    --> src/main.rs:146:41
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   ui.small_button("x");
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: You should check if the user clicked this with `if ui.small_button(…).clicked() { … } 
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 146 |                                         let _ = ui.small_button("x");
[INFO] [stdout]     |                                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: document-features v0.2.8
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "56ae9df3c9f3ee770c6afbb5e21acf3fe85d8eebd517bf45dc047e5a4a48a77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ae9df3c9f3ee770c6afbb5e21acf3fe85d8eebd517bf45dc047e5a4a48a77b", kill_on_drop: false }`
[INFO] [stdout] 56ae9df3c9f3ee770c6afbb5e21acf3fe85d8eebd517bf45dc047e5a4a48a77b
