[INFO] fetching crate egui-fltk-frontend 0.22.1...
[INFO] testing egui-fltk-frontend-0.22.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate egui-fltk-frontend 0.22.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate egui-fltk-frontend 0.22.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate egui-fltk-frontend 0.22.1
[INFO] tweaked toml for crates.io crate egui-fltk-frontend 0.22.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate egui-fltk-frontend 0.22.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate egui-fltk-frontend 0.22.1 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a77952681350f29d6f40c49f70e3eaf37b42e85732bb076a41f0a60a1542ac1
[INFO] running `Command { std: "docker" "start" "-a" "4a77952681350f29d6f40c49f70e3eaf37b42e85732bb076a41f0a60a1542ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a77952681350f29d6f40c49f70e3eaf37b42e85732bb076a41f0a60a1542ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a77952681350f29d6f40c49f70e3eaf37b42e85732bb076a41f0a60a1542ac1", kill_on_drop: false }`
[INFO] [stdout] 4a77952681350f29d6f40c49f70e3eaf37b42e85732bb076a41f0a60a1542ac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b21124e3027093abe69c640b1b17f0fab9462c3445eef18fca119104e2fd8aae
[INFO] running `Command { std: "docker" "start" "-a" "b21124e3027093abe69c640b1b17f0fab9462c3445eef18fca119104e2fd8aae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling once_cell v1.14.0
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling ash v0.37.0+1.3.209
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling ttf-parser v0.15.2
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling ahash v0.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling wgpu-types v0.13.2
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.6
[INFO] [stderr]    Compiling glow v0.11.2
[INFO] [stderr]    Compiling inplace_it v0.3.5
[INFO] [stderr]    Compiling wgpu-core v0.13.2
[INFO] [stderr]    Compiling profiling v1.0.6
[INFO] [stderr]    Compiling copyless v0.1.5
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling type-map v0.5.0
[INFO] [stderr]    Compiling pollster v0.2.5
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]    Compiling nix v0.22.3
[INFO] [stderr]    Compiling gethostname v0.2.3
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling fltk-sys v1.3.14
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling spirv v0.2.0+1.5.4
[INFO] [stderr]    Compiling owned_ttf_parser v0.15.2
[INFO] [stderr]    Compiling gpu-descriptor v0.2.3
[INFO] [stderr]    Compiling ab_glyph v0.2.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.34
[INFO] [stderr]    Compiling bytemuck_derive v1.2.1
[INFO] [stderr]    Compiling bytemuck v1.12.1
[INFO] [stderr]    Compiling emath v0.19.0
[INFO] [stderr]    Compiling epaint v0.19.0
[INFO] [stderr]    Compiling thiserror v1.0.34
[INFO] [stderr]    Compiling naga v0.9.0
[INFO] [stderr]    Compiling x11rb v0.9.0
[INFO] [stderr]    Compiling egui v0.19.0
[INFO] [stderr]    Compiling arboard v2.1.1
[INFO] [stderr]    Compiling wgpu-hal v0.13.2
[INFO] [stderr]    Compiling wgpu v0.13.1
[INFO] [stderr]    Compiling fltk v1.3.15
[INFO] [stderr]    Compiling egui-fltk-frontend v0.22.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/backend.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | struct UniformBuffer {
[INFO] [stdout]     |        ^^^^^^^^^^^^^ field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]    --> src/backend.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | /// Uniform buffer used when rendering.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 20s
[INFO] running `Command { std: "docker" "inspect" "b21124e3027093abe69c640b1b17f0fab9462c3445eef18fca119104e2fd8aae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b21124e3027093abe69c640b1b17f0fab9462c3445eef18fca119104e2fd8aae", kill_on_drop: false }`
[INFO] [stdout] b21124e3027093abe69c640b1b17f0fab9462c3445eef18fca119104e2fd8aae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43f2088fb8e4a5eee8dd552bb26dac918da477be6975c8bf8d66cd3a00809153
[INFO] running `Command { std: "docker" "start" "-a" "43f2088fb8e4a5eee8dd552bb26dac918da477be6975c8bf8d66cd3a00809153", kill_on_drop: false }`
[INFO] [stderr]    Compiling pp-rs v0.2.1
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling enum-map-derive v0.10.0
[INFO] [stderr]    Compiling tracing-core v0.1.29
[INFO] [stderr]    Compiling unicode_names2 v0.5.1
[INFO] [stderr]    Compiling egui_extras v0.19.0
[INFO] [stderr]    Compiling naga v0.9.0
[INFO] [stderr]    Compiling tracing v0.1.36
[INFO] [stderr]    Compiling enum-map v2.4.1
[INFO] [stderr]    Compiling egui_demo_lib v0.19.0
[INFO] [stderr]    Compiling wgpu-hal v0.13.2
[INFO] [stderr]    Compiling wgpu-core v0.13.2
[INFO] [stderr]    Compiling wgpu v0.13.1
[INFO] [stderr]    Compiling smaa v0.7.0
[INFO] [stderr]    Compiling egui-fltk-frontend v0.22.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/backend.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | struct UniformBuffer {
[INFO] [stdout]     |        ^^^^^^^^^^^^^ field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]    --> src/backend.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | /// Uniform buffer used when rendering.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/backend.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | struct UniformBuffer {
[INFO] [stdout]     |        ^^^^^^^^^^^^^ field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check` is never used
[INFO] [stdout]    --> src/backend.rs:193:1
[INFO] [stdout]     |
[INFO] [stdout] 193 | /// Uniform buffer used when rendering.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 36.63s
[INFO] running `Command { std: "docker" "inspect" "43f2088fb8e4a5eee8dd552bb26dac918da477be6975c8bf8d66cd3a00809153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43f2088fb8e4a5eee8dd552bb26dac918da477be6975c8bf8d66cd3a00809153", kill_on_drop: false }`
[INFO] [stdout] 43f2088fb8e4a5eee8dd552bb26dac918da477be6975c8bf8d66cd3a00809153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ad22bf094b3e24c9ff2b279e3c844dcf293d72eea5b7139ddbb5069d60b18727
[INFO] running `Command { std: "docker" "start" "-a" "ad22bf094b3e24c9ff2b279e3c844dcf293d72eea5b7139ddbb5069d60b18727", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/backend.rs:196:8
[INFO] [stderr]     |
[INFO] [stderr] 196 | struct UniformBuffer {
[INFO] [stderr]     |        ^^^^^^^^^^^^^ field in this struct
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing this field
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `check` is never used
[INFO] [stderr]    --> src/backend.rs:193:1
[INFO] [stderr]     |
[INFO] [stderr] 193 | /// Uniform buffer used when rendering.
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `egui-fltk-frontend` (lib) generated 2 warnings
[INFO] [stderr] warning: `egui-fltk-frontend` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/egui_fltk_frontend-d55e62ed4b7c581d)
[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] [stderr]    Doc-tests egui_fltk_frontend
[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" "ad22bf094b3e24c9ff2b279e3c844dcf293d72eea5b7139ddbb5069d60b18727", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad22bf094b3e24c9ff2b279e3c844dcf293d72eea5b7139ddbb5069d60b18727", kill_on_drop: false }`
[INFO] [stdout] ad22bf094b3e24c9ff2b279e3c844dcf293d72eea5b7139ddbb5069d60b18727
