[INFO] cloning repository https://github.com/mine2424/flutter_issue_app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mine2424/flutter_issue_app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmine2424%2Fflutter_issue_app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmine2424%2Fflutter_issue_app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65221961b0cec2ebb0b630491a0420e43d684ac2
[INFO] checking mine2424/flutter_issue_app against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmine2424%2Fflutter_issue_app" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mine2424/flutter_issue_app on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mine2424/flutter_issue_app
[INFO] finished tweaking git repo https://github.com/mine2424/flutter_issue_app
[INFO] tweaked toml for git repo https://github.com/mine2424/flutter_issue_app written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mine2424/flutter_issue_app 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gloo-render v0.1.0
[INFO] [stderr]   Downloaded gloo-storage v0.2.0
[INFO] [stderr]   Downloaded gloo-console v0.2.1
[INFO] [stderr]   Downloaded gloo-dialogs v0.1.0
[INFO] [stderr]   Downloaded gloo-file v0.2.1
[INFO] [stderr]   Downloaded gloo-utils v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4f606939a355eddb8cce5750bf9303d8263f6d52455b5a45fda337476ba7905
[INFO] running `Command { std: "docker" "start" "-a" "e4f606939a355eddb8cce5750bf9303d8263f6d52455b5a45fda337476ba7905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4f606939a355eddb8cce5750bf9303d8263f6d52455b5a45fda337476ba7905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4f606939a355eddb8cce5750bf9303d8263f6d52455b5a45fda337476ba7905", kill_on_drop: false }`
[INFO] [stdout] e4f606939a355eddb8cce5750bf9303d8263f6d52455b5a45fda337476ba7905
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ada4e95544dcf5c03c1fe62259bc925593b0fa5bfda8a8a1b808dcfb0e7c69ec
[INFO] running `Command { std: "docker" "start" "-a" "ada4e95544dcf5c03c1fe62259bc925593b0fa5bfda8a8a1b808dcfb0e7c69ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.80
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling wasm-bindgen v0.2.80
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling yew-macro v0.19.3
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.80
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking js-sys v0.3.57
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking web-sys v0.3.57
[INFO] [stderr]     Checking gloo-timers v0.2.3
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.30
[INFO] [stderr]     Checking gloo-utils v0.1.2
[INFO] [stderr]     Checking gloo-events v0.1.1
[INFO] [stderr]     Checking gloo-render v0.1.0
[INFO] [stderr]     Checking gloo-dialogs v0.1.0
[INFO] [stderr]     Checking gloo-console v0.2.1
[INFO] [stderr]     Checking wasm-logger v0.2.0
[INFO] [stderr]     Checking gloo-storage v0.2.0
[INFO] [stderr]     Checking gloo-file v0.2.1
[INFO] [stderr]     Checking gloo v0.4.2
[INFO] [stderr]     Checking yew v0.19.3
[INFO] [stderr]     Checking flutter-issue-app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:42:37
[INFO] [stdout]    |
[INFO] [stdout] 42 | ...                   <a href="#">
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: All `<img>` tags should have an `alt` attribute which provides a human-readable description 
[INFO] [stdout]   --> src/app.rs:44:32
[INFO] [stdout]    |
[INFO] [stdout] 44 | ...                   <img class="h-8 w-auto sm:h-10" src="https://tailwindui.com/img/logos/workflow-mark-indigo-600.svg" />
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:42:37
[INFO] [stdout]    |
[INFO] [stdout] 42 | ...                   <a href="#">
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: All `<img>` tags should have an `alt` attribute which provides a human-readable description 
[INFO] [stdout]   --> src/app.rs:44:32
[INFO] [stdout]    |
[INFO] [stdout] 44 | ...                   <img class="h-8 w-auto sm:h-10" src="https://tailwindui.com/img/logos/workflow-mark-indigo-600.svg" />
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:57:35
[INFO] [stdout]    |
[INFO] [stdout] 57 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Product"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:59:35
[INFO] [stdout]    |
[INFO] [stdout] 59 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Features"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:61:35
[INFO] [stdout]    |
[INFO] [stdout] 61 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Marketplace"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:63:35
[INFO] [stdout]    |
[INFO] [stdout] 63 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Company"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 |                           <a href="#" class="font-medium text-indigo-600 hover:text-indigo-500">{"Log in"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:57:35
[INFO] [stdout]    |
[INFO] [stdout] 57 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Product"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:59:35
[INFO] [stdout]    |
[INFO] [stdout] 59 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Features"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:61:35
[INFO] [stdout]    |
[INFO] [stdout] 61 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Marketplace"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:63:35
[INFO] [stdout]    |
[INFO] [stdout] 63 |                           <a href="#" class="font-medium text-gray-500 hover:text-gray-900">{"Company"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 |                           <a href="#" class="font-medium text-indigo-600 hover:text-indigo-500">{"Log in"}</a>
[INFO] [stdout]    |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:86:35
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Product"}...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:88:35
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Features"...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:90:35
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Marketpla...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:92:35
[INFO] [stdout]    |
[INFO] [stdout] 92 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Company"}...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:86:35
[INFO] [stdout]    |
[INFO] [stdout] 86 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Product"}...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:88:35
[INFO] [stdout]    |
[INFO] [stdout] 88 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Features"...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:90:35
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Marketpla...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:92:35
[INFO] [stdout]    |
[INFO] [stdout] 92 | ...   <a href="#" class="block px-3 py-2 rounded-md text-base font-medium text-gray-700 hover:text-gray-900 hover:bg-gray-50">{"Company"}...
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:94:33
[INFO] [stdout]    |
[INFO] [stdout] 94 | ...   <a href="#" class="block w-full px-5 py-3 text-center font-medium text-indigo-600 bg-gray-50 hover:bg-gray-100">{" Log in "}</a>
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]   --> src/app.rs:94:33
[INFO] [stdout]    |
[INFO] [stdout] 94 | ...   <a href="#" class="block w-full px-5 py-3 text-center font-medium text-indigo-600 bg-gray-50 hover:bg-gray-100">{" Log in "}</a>
[INFO] [stdout]    |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]    --> src/app.rs:108:35
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...   <a href="#" class="w-full flex items-center justify-center px-8 py-3 border border-transparent text-base font-medium rounded-md tex...
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]    --> src/app.rs:111:35
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...   <a href="#" class="w-full flex items-center justify-center px-8 py-3 border border-transparent text-base font-medium rounded-md tex...
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]    --> src/app.rs:108:35
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...   <a href="#" class="w-full flex items-center justify-center px-8 py-3 border border-transparent text-base font-medium rounded-md tex...
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: '#' is not a suitable value for the `href` attribute. Without a meaningful attribute assistive technologies will struggle to understand your webpage. https://developer.mozilla.org/en-US/docs/Learn/Accessibility/HTML#onclick_events
[INFO] [stdout]    --> src/app.rs:111:35
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...   <a href="#" class="w-full flex items-center justify-center px-8 py-3 border border-transparent text-base font-medium rounded-md tex...
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/app.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct App {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 4 |     value: char,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/app.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct App {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 4 |     value: char,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.09s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.80
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "ada4e95544dcf5c03c1fe62259bc925593b0fa5bfda8a8a1b808dcfb0e7c69ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada4e95544dcf5c03c1fe62259bc925593b0fa5bfda8a8a1b808dcfb0e7c69ec", kill_on_drop: false }`
[INFO] [stdout] ada4e95544dcf5c03c1fe62259bc925593b0fa5bfda8a8a1b808dcfb0e7c69ec
[INFO] checking mine2424/flutter_issue_app against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmine2424%2Fflutter_issue_app" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mine2424/flutter_issue_app on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mine2424/flutter_issue_app
[INFO] finished tweaking git repo https://github.com/mine2424/flutter_issue_app
[INFO] tweaked toml for git repo https://github.com/mine2424/flutter_issue_app written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mine2424/flutter_issue_app 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3253ccccad8ba532562ac958772a46b50381db08a3d99f54ef56f0cca028add5
[INFO] running `Command { std: "docker" "start" "-a" "3253ccccad8ba532562ac958772a46b50381db08a3d99f54ef56f0cca028add5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3253ccccad8ba532562ac958772a46b50381db08a3d99f54ef56f0cca028add5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3253ccccad8ba532562ac958772a46b50381db08a3d99f54ef56f0cca028add5", kill_on_drop: false }`
[INFO] [stdout] 3253ccccad8ba532562ac958772a46b50381db08a3d99f54ef56f0cca028add5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db34e9742f8c0c3fcf498541f7204e7107b6d6aada75d8fe4915770da58c0906
[INFO] running `Command { std: "docker" "start" "-a" "db34e9742f8c0c3fcf498541f7204e7107b6d6aada75d8fe4915770da58c0906", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.80
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling wasm-bindgen v0.2.80
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling boolinator v2.4.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling yew-macro v0.19.3
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/wasm-bindgen-macro-support-0.2.80/src/parser.rs:272:17
[INFO] [stdout]     |
[INFO] [stdout] 272 | /                 if input.parse::<Token![=]>().is_ok() {
[INFO] [stdout] 273 | |                     let ident = input.parse::<AnyIdent>()?.0;
[INFO] [stdout] 274 | |                     return Ok(BindgenAttr::$variant(attr_span, Some(ident)))
[INFO] [stdout] 275 | |                 } else {
[INFO] [stdout] 276 | |                     return Ok(BindgenAttr::$variant(attr_span, None));
[INFO] [stdout] 277 | |                 }
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 332 |           attrgen!(parsers);
[INFO] [stdout]     |           ----------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `parsers` which comes from the expansion of the macro `attrgen` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-bindgen-macro-support` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "db34e9742f8c0c3fcf498541f7204e7107b6d6aada75d8fe4915770da58c0906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db34e9742f8c0c3fcf498541f7204e7107b6d6aada75d8fe4915770da58c0906", kill_on_drop: false }`
[INFO] [stdout] db34e9742f8c0c3fcf498541f7204e7107b6d6aada75d8fe4915770da58c0906