[INFO] fetching crate i-slint-backend-selector 1.12.1...
[INFO] checking i-slint-backend-selector-1.12.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate i-slint-backend-selector 1.12.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate i-slint-backend-selector 1.12.1
[INFO] finished tweaking crates.io crate i-slint-backend-selector 1.12.1
[INFO] tweaked toml for crates.io crate i-slint-backend-selector 1.12.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate i-slint-backend-selector 1.12.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate i-slint-backend-selector 1.12.1 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1d212a6f8ac56caefdb95b08aedbfa14618893de00c55c03eda21fb2dff687e
[INFO] running `Command { std: "docker" "start" "-a" "e1d212a6f8ac56caefdb95b08aedbfa14618893de00c55c03eda21fb2dff687e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1d212a6f8ac56caefdb95b08aedbfa14618893de00c55c03eda21fb2dff687e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d212a6f8ac56caefdb95b08aedbfa14618893de00c55c03eda21fb2dff687e", kill_on_drop: false }`
[INFO] [stdout] e1d212a6f8ac56caefdb95b08aedbfa14618893de00c55c03eda21fb2dff687e
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3044cfea80480606012f366405f1551a946185a137e9e2880a149d62f15af365
[INFO] running `Command { std: "docker" "start" "-a" "3044cfea80480606012f366405f1551a946185a137e9e2880a149d62f15af365", kill_on_drop: false }`
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[INFO] [stderr]    Compiling i-slint-backend-selector v1.12.1 (/opt/rustwide/workdir)
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[INFO] [stdout] error: Please select a feature to build with the winit backend: `renderer-femtovg`, `renderer-skia`, `renderer-skia-opengl`, `renderer-skia-vulkan` or `renderer-software`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/i-slint-backend-winit-1.12.1/lib.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 | ...   compile_error!("Please select a feature to build with the winit backend: `renderer-femtovg`, `renderer-skia`, `renderer-skia-opengl`, `renderer-skia-vulkan` or `renderer-software`");
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Please select a feature to build with the winit backend: `renderer-femtovg`, `renderer-skia`, `renderer-skia-opengl`, `renderer-skia-vulkan` or `renderer-software`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/i-slint-backend-winit-1.12.1/lib.rs:126:13
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...   compile_error!("Please select a feature to build with the winit backend: `renderer-femtovg`, `renderer-skia`, `renderer-skia-opengl`, `renderer-skia-vulkan` or `renderer-software`");
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `DEFAULT_RENDERER_NAME` in this scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/i-slint-backend-winit-1.12.1/lib.rs:420:95
[INFO] [stdout]     |
[INFO] [stdout] 420 |                         "slint winit: unrecognized renderer {renderer_name}, falling back to {DEFAULT_RENDERER_NAME}"
[INFO] [stdout]     |                                                                                               ^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/i-slint-backend-winit-1.12.1/lib.rs:115:6
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn default_renderer_factory(
[INFO] [stdout]     |    ------------------------ implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 114 |     shared_backend_data: &Rc<SharedBackendData>,
[INFO] [stdout] 115 | ) -> Box<dyn WinitCompatibleRenderer> {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Box<dyn WinitCompatibleRenderer>`, found `()`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Box<(dyn WinitCompatibleRenderer + 'static)>`
[INFO] [stdout]             found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/i-slint-backend-winit-1.12.1/lib.rs:150:16
[INFO] [stdout]     |
[INFO] [stdout] 150 |     .find_map(|renderer_factory| {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |             renderer_factory(&shared_backend_data),
[INFO] [stdout]     |             -------------------------------------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 150 |     .find_map(|renderer_factory: /* Type */| {
[INFO] [stdout]     |                                ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0308, E0425.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `i-slint-backend-winit` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "3044cfea80480606012f366405f1551a946185a137e9e2880a149d62f15af365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3044cfea80480606012f366405f1551a946185a137e9e2880a149d62f15af365", kill_on_drop: false }`
[INFO] [stdout] 3044cfea80480606012f366405f1551a946185a137e9e2880a149d62f15af365