[INFO] fetching crate frui_widgets 0.0.1...
[INFO] testing frui_widgets-0.0.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate frui_widgets 0.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate frui_widgets 0.0.1
[INFO] finished tweaking crates.io crate frui_widgets 0.0.1
[INFO] tweaked toml for crates.io crate frui_widgets 0.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate frui_widgets 0.0.1 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 148 packages to latest compatible versions
[INFO] [stderr]       Adding druid-shell v0.7.0 (available: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 081950d03de3ba09c57829eaf981cb53aba359555f2f240f52a1e7adb460d410
[INFO] running `Command { std: "docker" "start" "-a" "081950d03de3ba09c57829eaf981cb53aba359555f2f240f52a1e7adb460d410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "081950d03de3ba09c57829eaf981cb53aba359555f2f240f52a1e7adb460d410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "081950d03de3ba09c57829eaf981cb53aba359555f2f240f52a1e7adb460d410", kill_on_drop: false }`
[INFO] [stdout] 081950d03de3ba09c57829eaf981cb53aba359555f2f240f52a1e7adb460d410
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2727dad3a85857bf039c186e6bcf67e9d718a9a60afc09810eba9b0be0308e60
[INFO] running `Command { std: "docker" "start" "-a" "2727dad3a85857bf039c186e6bcf67e9d718a9a60afc09810eba9b0be0308e60", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling strum v0.18.0
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling cairo-rs v0.9.1
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling gio v0.9.1
[INFO] [stderr]    Compiling pango v0.9.1
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling gdk-pixbuf v0.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling gdk v0.13.2
[INFO] [stderr]    Compiling atk v0.9.0
[INFO] [stderr]    Compiling const_fn v0.4.11
[INFO] [stderr]    Compiling gtk v0.9.2
[INFO] [stderr]    Compiling unic-ucd-bidi v0.9.0
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling xi-unicode v0.2.1
[INFO] [stderr]    Compiling deranged v0.5.4
[INFO] [stderr]    Compiling kurbo v0.7.1
[INFO] [stderr]    Compiling time-macros v0.2.24
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling keyboard-types v0.5.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling unic-bidi v0.9.0
[INFO] [stderr]    Compiling piet v0.3.1
[INFO] [stderr]    Compiling time v0.3.44
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling simplelog v0.12.2
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling frui_macros v0.0.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling glib-macros v0.10.1
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]    Compiling glib-sys v0.10.1
[INFO] [stderr]    Compiling gobject-sys v0.10.0
[INFO] [stderr]    Compiling gio-sys v0.10.1
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.10.0
[INFO] [stderr]    Compiling gdk-sys v0.10.0
[INFO] [stderr]    Compiling atk-sys v0.10.0
[INFO] [stderr]    Compiling gtk-sys v0.10.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling glib v0.10.3
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling piet-cairo v0.3.0
[INFO] [stderr]    Compiling piet-common v0.3.2
[INFO] [stderr]    Compiling druid-shell v0.7.0
[INFO] [stderr]    Compiling frui_core v0.0.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/frui_core-0.0.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(auto_traits)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/frui_core-0.0.1/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(negative_impls)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/frui_core-0.0.1/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/frui_core-0.0.1/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0367]: `!Immutable` impl requires `T: Sized` but the struct it is implemented for does not
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/frui_core-0.0.1/src/api/widget_eq/cheap_eq.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> !Immutable for UnsafeCell<T> {}
[INFO] [stdout]    |      ^
[INFO] [stdout]    |
[INFO] [stdout] note: the implementor must specify the same requirement
[INFO] [stdout]   --> /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/cell.rs:2188:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frui_core` (lib) due to 5 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0367, E0554.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0367`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gtk` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2025-09-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name gtk --edition=2015 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/gtk-0.9.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="v3_16"' --cfg 'feature="v3_18"' --cfg 'feature="v3_20"' --cfg 'feature="v3_22"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("dox", "embed-lgpl-docs", "gtk-rs-lgpl-docs", "purge-lgpl-docs", "v3_16", "v3_18", "v3_20", "v3_22", "v3_22_20", "v3_22_26", "v3_22_27", "v3_22_29", "v3_22_30", "v3_24", "v3_24_8", "v3_24_9"))' -C metadata=e0136ceaab346dcf -C extra-filename=-f1100309201a0892 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern atk=/opt/rustwide/target/debug/deps/libatk-550034d5dbff4555.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-dde12b0d7d495b50.rmeta --extern cairo=/opt/rustwide/target/debug/deps/libcairo-83144630041da885.rmeta --extern cairo_sys=/opt/rustwide/target/debug/deps/libcairo_sys-619af11ddb7f08df.rmeta --extern gdk=/opt/rustwide/target/debug/deps/libgdk-9d469fcd968d3d60.rmeta --extern gdk_pixbuf=/opt/rustwide/target/debug/deps/libgdk_pixbuf-859ecd25919164fa.rmeta --extern gdk_pixbuf_sys=/opt/rustwide/target/debug/deps/libgdk_pixbuf_sys-6708ff8d532e601a.rmeta --extern gdk_sys=/opt/rustwide/target/debug/deps/libgdk_sys-1bef66718ee48415.rmeta --extern gio=/opt/rustwide/target/debug/deps/libgio-44b4a2826e148ea2.rmeta --extern gio_sys=/opt/rustwide/target/debug/deps/libgio_sys-8d701c255c7502da.rmeta --extern glib=/opt/rustwide/target/debug/deps/libglib-45b5ca7272eb7d5a.rmeta --extern glib_sys=/opt/rustwide/target/debug/deps/libglib_sys-81fc8c6f92a42048.rmeta --extern gobject_sys=/opt/rustwide/target/debug/deps/libgobject_sys-efedda955e48ed30.rmeta --extern gtk_sys=/opt/rustwide/target/debug/deps/libgtk_sys-53c386a000fe9a46.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-7a54cdb917ea7291.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-e9252a7b5119f3eb.rmeta --extern pango=/opt/rustwide/target/debug/deps/libpango-00c9ed9fc799e4fa.rmeta --extern pango_sys=/opt/rustwide/target/debug/deps/libpango_sys-d415946b9222fb10.rmeta --cap-lints allow --cap-lints=warn --cfg 'gdk_backend="broadway"' --cfg 'gdk_backend="wayland"' --cfg 'gdk_backend="x11"'` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "2727dad3a85857bf039c186e6bcf67e9d718a9a60afc09810eba9b0be0308e60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2727dad3a85857bf039c186e6bcf67e9d718a9a60afc09810eba9b0be0308e60", kill_on_drop: false }`
[INFO] [stdout] 2727dad3a85857bf039c186e6bcf67e9d718a9a60afc09810eba9b0be0308e60