[INFO] cloning repository https://github.com/tesfabpel/rust-gui-toolkit-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tesfabpel/rust-gui-toolkit-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftesfabpel%2Frust-gui-toolkit-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftesfabpel%2Frust-gui-toolkit-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdf44873c7d2d7996e21df8c157499ed56aa7ef6
[INFO] testing tesfabpel/rust-gui-toolkit-study against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftesfabpel%2Frust-gui-toolkit-study" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tesfabpel/rust-gui-toolkit-study
[INFO] finished tweaking git repo https://github.com/tesfabpel/rust-gui-toolkit-study
[INFO] tweaked toml for git repo https://github.com/tesfabpel/rust-gui-toolkit-study written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tesfabpel/rust-gui-toolkit-study on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tesfabpel/rust-gui-toolkit-study 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ambassador v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d0b889b60a9cfc1331fc237af96082169d1963fbc8582adf7ff23009dac6023
[INFO] running `Command { std: "docker" "start" "-a" "4d0b889b60a9cfc1331fc237af96082169d1963fbc8582adf7ff23009dac6023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d0b889b60a9cfc1331fc237af96082169d1963fbc8582adf7ff23009dac6023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0b889b60a9cfc1331fc237af96082169d1963fbc8582adf7ff23009dac6023", kill_on_drop: false }`
[INFO] [stdout] 4d0b889b60a9cfc1331fc237af96082169d1963fbc8582adf7ff23009dac6023
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 289aeaae2b397a44425557e4a2347e0d80190df3ac679f5cd6dac219e3857bd6
[INFO] running `Command { std: "docker" "start" "-a" "289aeaae2b397a44425557e4a2347e0d80190df3ac679f5cd6dac219e3857bd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling ambassador v0.2.1
[INFO] [stderr]    Compiling rust-gui-toolkit-study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `id`, `set_id`, `parent`, `set_parent`, `children`, and `children_mut` are never used
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | trait Control {
[INFO] [stdout]    |       ------- methods in this trait
[INFO] [stdout] 17 |     fn id(&self) -> &Option<String>;
[INFO] [stdout]    |        ^^
[INFO] [stdout] 18 |     fn set_id(&mut self, id: Option<String>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |     fn parent(&self) -> &Option<Weak<RefBox<dyn Control>>>;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 21 |     fn set_parent(&mut self, parent: Option<Weak<RefBox<dyn Control>>>);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 22 |
[INFO] [stdout] 23 |     fn children(&self) -> &Vec<Rc<RefBox<dyn Control>>>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 24 |     fn children_mut(&mut self) -> &mut Vec<Rc<RefBox<dyn Control>>>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id_`, `parent_`, and `children_` are never read
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct ControlData {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 28 |     id_: Option<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     parent_: Option<Weak<RefBox<dyn Control>>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 30 |     children_: Vec<Rc<RefBox<dyn Control>>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `position`, `size`, `border`, `margin`, `set_margin`, and `padding` are never used
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | trait HasLayout {
[INFO] [stdout]    |       --------- methods in this trait
[INFO] [stdout] 71 |     fn position(&self) -> &Point2D;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn size(&self) -> &Size2D;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn border(&self) -> f64;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn margin(&self) -> f64;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 81 |     fn set_margin(&mut self, width: f64);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 82 |
[INFO] [stdout] 83 |     fn padding(&self) -> f64;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Button` is never used
[INFO] [stdout]    --> src/main.rs:204:7
[INFO] [stdout]     |
[INFO] [stdout] 204 | trait Button: Control + HasText + Renderable {}
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ctrl` is never read
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 210 | struct FtkButton {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 211 |     ctrl: ControlData,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.51s
[INFO] running `Command { std: "docker" "inspect" "289aeaae2b397a44425557e4a2347e0d80190df3ac679f5cd6dac219e3857bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "289aeaae2b397a44425557e4a2347e0d80190df3ac679f5cd6dac219e3857bd6", kill_on_drop: false }`
[INFO] [stdout] 289aeaae2b397a44425557e4a2347e0d80190df3ac679f5cd6dac219e3857bd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34171966f0e49371b49c212617ff2adfdfe811edbadc496fbeddd9a9fb126c67
[INFO] running `Command { std: "docker" "start" "-a" "34171966f0e49371b49c212617ff2adfdfe811edbadc496fbeddd9a9fb126c67", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-gui-toolkit-study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `id`, `set_id`, `parent`, `set_parent`, `children`, and `children_mut` are never used
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | trait Control {
[INFO] [stdout]    |       ------- methods in this trait
[INFO] [stdout] 17 |     fn id(&self) -> &Option<String>;
[INFO] [stdout]    |        ^^
[INFO] [stdout] 18 |     fn set_id(&mut self, id: Option<String>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |     fn parent(&self) -> &Option<Weak<RefBox<dyn Control>>>;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 21 |     fn set_parent(&mut self, parent: Option<Weak<RefBox<dyn Control>>>);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 22 |
[INFO] [stdout] 23 |     fn children(&self) -> &Vec<Rc<RefBox<dyn Control>>>;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 24 |     fn children_mut(&mut self) -> &mut Vec<Rc<RefBox<dyn Control>>>;
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id_`, `parent_`, and `children_` are never read
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct ControlData {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 28 |     id_: Option<String>,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 29 |     parent_: Option<Weak<RefBox<dyn Control>>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 30 |     children_: Vec<Rc<RefBox<dyn Control>>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `position`, `size`, `border`, `margin`, `set_margin`, and `padding` are never used
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | trait HasLayout {
[INFO] [stdout]    |       --------- methods in this trait
[INFO] [stdout] 71 |     fn position(&self) -> &Point2D;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn size(&self) -> &Size2D;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn border(&self) -> f64;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn margin(&self) -> f64;
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 81 |     fn set_margin(&mut self, width: f64);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 82 |
[INFO] [stdout] 83 |     fn padding(&self) -> f64;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Button` is never used
[INFO] [stdout]    --> src/main.rs:204:7
[INFO] [stdout]     |
[INFO] [stdout] 204 | trait Button: Control + HasText + Renderable {}
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `ctrl` is never read
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 210 | struct FtkButton {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 211 |     ctrl: ControlData,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "34171966f0e49371b49c212617ff2adfdfe811edbadc496fbeddd9a9fb126c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34171966f0e49371b49c212617ff2adfdfe811edbadc496fbeddd9a9fb126c67", kill_on_drop: false }`
[INFO] [stdout] 34171966f0e49371b49c212617ff2adfdfe811edbadc496fbeddd9a9fb126c67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ac9ae586d8eeacd00f1b49ec3d032af3723fce617f7ec394f43f134253afa32f
[INFO] running `Command { std: "docker" "start" "-a" "ac9ae586d8eeacd00f1b49ec3d032af3723fce617f7ec394f43f134253afa32f", kill_on_drop: false }`
[INFO] [stderr] warning: methods `id`, `set_id`, `parent`, `set_parent`, `children`, and `children_mut` are never used
[INFO] [stderr]   --> src/main.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | trait Control {
[INFO] [stderr]    |       ------- methods in this trait
[INFO] [stderr] 17 |     fn id(&self) -> &Option<String>;
[INFO] [stderr]    |        ^^
[INFO] [stderr] 18 |     fn set_id(&mut self, id: Option<String>);
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 19 |
[INFO] [stderr] 20 |     fn parent(&self) -> &Option<Weak<RefBox<dyn Control>>>;
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 21 |     fn set_parent(&mut self, parent: Option<Weak<RefBox<dyn Control>>>);
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 22 |
[INFO] [stderr] 23 |     fn children(&self) -> &Vec<Rc<RefBox<dyn Control>>>;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 24 |     fn children_mut(&mut self) -> &mut Vec<Rc<RefBox<dyn Control>>>;
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id_`, `parent_`, and `children_` are never read
[INFO] [stderr]   --> src/main.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | struct ControlData {
[INFO] [stderr]    |        ----------- fields in this struct
[INFO] [stderr] 28 |     id_: Option<String>,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 29 |     parent_: Option<Weak<RefBox<dyn Control>>>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 30 |     children_: Vec<Rc<RefBox<dyn Control>>>,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `position`, `size`, `border`, `margin`, `set_margin`, and `padding` are never used
[INFO] [stderr]   --> src/main.rs:71:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | trait HasLayout {
[INFO] [stderr]    |       --------- methods in this trait
[INFO] [stderr] 71 |     fn position(&self) -> &Point2D;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |     fn size(&self) -> &Size2D;
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |     fn border(&self) -> f64;
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 80 |     fn margin(&self) -> f64;
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 81 |     fn set_margin(&mut self, width: f64);
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 82 |
[INFO] [stderr] 83 |     fn padding(&self) -> f64;
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Button` is never used
[INFO] [stderr]    --> src/main.rs:204:7
[INFO] [stderr]     |
[INFO] [stderr] 204 | trait Button: Control + HasText + Renderable {}
[INFO] [stderr]     |       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `ctrl` is never read
[INFO] [stderr]    --> src/main.rs:211:5
[INFO] [stderr]     |
[INFO] [stderr] 210 | struct FtkButton {
[INFO] [stderr]     |        --------- field in this struct
[INFO] [stderr] 211 |     ctrl: ControlData,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-gui-toolkit-study` (bin "rust-gui-toolkit-study" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_gui_toolkit_study-95d3fff83bd34e6d)
[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" "ac9ae586d8eeacd00f1b49ec3d032af3723fce617f7ec394f43f134253afa32f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac9ae586d8eeacd00f1b49ec3d032af3723fce617f7ec394f43f134253afa32f", kill_on_drop: false }`
[INFO] [stdout] ac9ae586d8eeacd00f1b49ec3d032af3723fce617f7ec394f43f134253afa32f