[INFO] cloning repository https://github.com/SirWalross/kinematicsolver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SirWalross/kinematicsolver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirWalross%2Fkinematicsolver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirWalross%2Fkinematicsolver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de595e1a7c8093c59802ba8610ced0b10d724490
[INFO] building SirWalross/kinematicsolver against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirWalross%2Fkinematicsolver" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/SirWalross/kinematicsolver
[INFO] finished tweaking git repo https://github.com/SirWalross/kinematicsolver
[INFO] tweaked toml for git repo https://github.com/SirWalross/kinematicsolver written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SirWalross/kinematicsolver on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SirWalross/kinematicsolver 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_spanned v0.6.4
[INFO] [stderr]   Downloaded smallvec v1.11.2
[INFO] [stderr]   Downloaded glib-macros v0.18.3
[INFO] [stderr]   Downloaded proc-macro-crate v2.0.1
[INFO] [stderr]   Downloaded gdk-pixbuf v0.18.3
[INFO] [stderr]   Downloaded futures-channel v0.3.29
[INFO] [stderr]   Downloaded cairo-rs v0.18.3
[INFO] [stderr]   Downloaded futures-executor v0.3.29
[INFO] [stderr]   Downloaded proc-macro2 v1.0.70
[INFO] [stderr]   Downloaded winnow v0.5.28
[INFO] [stderr]   Downloaded target-lexicon v0.12.12
[INFO] [stderr]   Downloaded futures-io v0.3.29
[INFO] [stderr]   Downloaded futures-util v0.3.29
[INFO] [stderr]   Downloaded futures-core v0.3.29
[INFO] [stderr]   Downloaded futures-macro v0.3.29
[INFO] [stderr]   Downloaded futures-task v0.3.29
[INFO] [stderr]   Downloaded glib v0.18.4
[INFO] [stderr]   Downloaded syn v2.0.41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f906f858be0b6c028ff6c256d8e4a3694acc50053e32294637c97b8978b5b35
[INFO] running `Command { std: "docker" "start" "-a" "8f906f858be0b6c028ff6c256d8e4a3694acc50053e32294637c97b8978b5b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f906f858be0b6c028ff6c256d8e4a3694acc50053e32294637c97b8978b5b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f906f858be0b6c028ff6c256d8e4a3694acc50053e32294637c97b8978b5b35", kill_on_drop: false }`
[INFO] [stdout] 8f906f858be0b6c028ff6c256d8e4a3694acc50053e32294637c97b8978b5b35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 191e2bea7255738fbe88cfbccee3f50a439c25214f9e1e7312e99f86d78c9b9d
[INFO] running `Command { std: "docker" "start" "-a" "191e2bea7255738fbe88cfbccee3f50a439c25214f9e1e7312e99f86d78c9b9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling winnow v0.5.28
[INFO] [stderr]    Compiling target-lexicon v0.12.12
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling thiserror v1.0.51
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling gio v0.18.4
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling futures-io v0.3.29
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling cfg-expr v0.15.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling field-offset v0.3.6
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.41
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling serde_spanned v0.6.4
[INFO] [stderr]    Compiling toml_edit v0.20.2
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.29
[INFO] [stderr]    Compiling thiserror-impl v1.0.51
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling gtk4-macros v0.7.2
[INFO] [stderr]    Compiling toml v0.8.2
[INFO] [stderr]    Compiling proc-macro-crate v2.0.1
[INFO] [stderr]    Compiling system-deps v6.2.0
[INFO] [stderr]    Compiling glib-macros v0.18.3
[INFO] [stderr]    Compiling glib-sys v0.18.1
[INFO] [stderr]    Compiling gobject-sys v0.18.0
[INFO] [stderr]    Compiling gio-sys v0.18.1
[INFO] [stderr]    Compiling pango-sys v0.18.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.18.2
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.18.0
[INFO] [stderr]    Compiling graphene-sys v0.18.1
[INFO] [stderr]    Compiling gdk4-sys v0.7.2
[INFO] [stderr]    Compiling gsk4-sys v0.7.3
[INFO] [stderr]    Compiling gtk4-sys v0.7.3
[INFO] [stderr]    Compiling futures-executor v0.3.29
[INFO] [stderr]    Compiling glib v0.18.4
[INFO] [stderr]    Compiling cairo-rs v0.18.3
[INFO] [stderr]    Compiling graphene-rs v0.18.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.18.3
[INFO] [stderr]    Compiling pango v0.18.3
[INFO] [stderr]    Compiling gdk4 v0.7.3
[INFO] [stderr]    Compiling gsk4 v0.7.3
[INFO] [stderr]    Compiling gtk4 v0.7.3
[INFO] [stderr]    Compiling kinematicsolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Button`
[INFO] [stdout]  --> src/main.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gtk::{prelude::*, Button, Grid, ToggleButton};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crank_length`
[INFO] [stdout]    --> src/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let crank_length = length(joints[1], joints[2]);
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let _crank_length = length(joints[1], joints[2]);
[INFO] [stdout]     |         +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `SUPPORT_LINE_MARGIN`
[INFO] [stdout]     |
[INFO] [stdout] 143 -     let crank_length = length(joints[1], joints[2]);
[INFO] [stdout] 143 +     let SUPPORT_LINE_MARGIN = length(joints[1], joints[2]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]    --> src/main.rs:239:33
[INFO] [stdout]     |
[INFO] [stdout] 239 |     drawing_area.set_draw_func(|area, context, width, height| {
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]    --> src/main.rs:239:48
[INFO] [stdout]     |
[INFO] [stdout] 239 |     drawing_area.set_draw_func(|area, context, width, height| {
[INFO] [stdout]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/main.rs:239:55
[INFO] [stdout]     |
[INFO] [stdout] 239 |     drawing_area.set_draw_func(|area, context, width, height| {
[INFO] [stdout]     |                                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     context.save();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 45 |     let _ = context.save();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     context.fill_preserve();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let _ = context.fill_preserve();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     context.stroke();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let _ = context.stroke();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     context.stroke();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let _ = context.stroke();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     context.restore();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let _ = context.restore();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     context.save();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = context.save();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     context.fill_preserve();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let _ = context.fill_preserve();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     context.restore();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let _ = context.restore();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     context.save();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let _ = context.save();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     context.restore();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let _ = context.restore();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 172 |     context.save();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let _ = context.save();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         context.stroke();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let _ = context.stroke();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 203 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 203 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:221:5
[INFO] [stdout]     |
[INFO] [stdout] 221 |     context.fill_preserve();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let _ = context.fill_preserve();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:225:5
[INFO] [stdout]     |
[INFO] [stdout] 225 |     context.restore();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let _ = context.restore();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 39s
[INFO] running `Command { std: "docker" "inspect" "191e2bea7255738fbe88cfbccee3f50a439c25214f9e1e7312e99f86d78c9b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "191e2bea7255738fbe88cfbccee3f50a439c25214f9e1e7312e99f86d78c9b9d", kill_on_drop: false }`
[INFO] [stdout] 191e2bea7255738fbe88cfbccee3f50a439c25214f9e1e7312e99f86d78c9b9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da1bc81c05a1ea3172d851839ca8d66f4bfa1bdbe79800c84704c67f8c25fbe2
[INFO] running `Command { std: "docker" "start" "-a" "da1bc81c05a1ea3172d851839ca8d66f4bfa1bdbe79800c84704c67f8c25fbe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling kinematicsolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Button`
[INFO] [stdout]  --> src/main.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use gtk::{prelude::*, Button, Grid, ToggleButton};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crank_length`
[INFO] [stdout]    --> src/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let crank_length = length(joints[1], joints[2]);
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let _crank_length = length(joints[1], joints[2]);
[INFO] [stdout]     |         +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `SUPPORT_LINE_MARGIN`
[INFO] [stdout]     |
[INFO] [stdout] 143 -     let crank_length = length(joints[1], joints[2]);
[INFO] [stdout] 143 +     let SUPPORT_LINE_MARGIN = length(joints[1], joints[2]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `area`
[INFO] [stdout]    --> src/main.rs:239:33
[INFO] [stdout]     |
[INFO] [stdout] 239 |     drawing_area.set_draw_func(|area, context, width, height| {
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_area`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]    --> src/main.rs:239:48
[INFO] [stdout]     |
[INFO] [stdout] 239 |     drawing_area.set_draw_func(|area, context, width, height| {
[INFO] [stdout]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/main.rs:239:55
[INFO] [stdout]     |
[INFO] [stdout] 239 |     drawing_area.set_draw_func(|area, context, width, height| {
[INFO] [stdout]     |                                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     context.save();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 45 |     let _ = context.save();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     context.fill_preserve();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let _ = context.fill_preserve();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     context.stroke();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let _ = context.stroke();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     context.stroke();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let _ = context.stroke();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 93 |     context.restore();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let _ = context.restore();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     context.save();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 97 |     let _ = context.save();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 102 |     context.fill_preserve();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let _ = context.fill_preserve();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     context.restore();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let _ = context.restore();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 |     context.save();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 110 |     let _ = context.save();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     context.restore();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let _ = context.restore();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 172 |     context.save();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let _ = context.save();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:198:9
[INFO] [stdout]     |
[INFO] [stdout] 198 |         context.stroke();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let _ = context.stroke();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 203 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 203 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:221:5
[INFO] [stdout]     |
[INFO] [stdout] 221 |     context.fill_preserve();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let _ = context.fill_preserve();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:223:5
[INFO] [stdout]     |
[INFO] [stdout] 223 |     context.stroke();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let _ = context.stroke();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:225:5
[INFO] [stdout]     |
[INFO] [stdout] 225 |     context.restore();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let _ = context.restore();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "da1bc81c05a1ea3172d851839ca8d66f4bfa1bdbe79800c84704c67f8c25fbe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1bc81c05a1ea3172d851839ca8d66f4bfa1bdbe79800c84704c67f8c25fbe2", kill_on_drop: false }`
[INFO] [stdout] da1bc81c05a1ea3172d851839ca8d66f4bfa1bdbe79800c84704c67f8c25fbe2
