[INFO] fetching crate mergui 0.1.0-alpha0.8...
[INFO] checking mergui-0.1.0-alpha0.8 against master#2e6fc425411280c658d852813de01c5157255088 for pr-128013
[INFO] extracting crate mergui 0.1.0-alpha0.8 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mergui 0.1.0-alpha0.8 on toolchain 2e6fc425411280c658d852813de01c5157255088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mergui 0.1.0-alpha0.8
[INFO] finished tweaking crates.io crate mergui 0.1.0-alpha0.8
[INFO] tweaked toml for crates.io crate mergui 0.1.0-alpha0.8 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate mergui 0.1.0-alpha0.8 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" "+2e6fc425411280c658d852813de01c5157255088" "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-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8df7acfcfcf6d6e369065a84c798e82ea8b10b0f5c1aeabcf4053f1047849c2f
[INFO] running `Command { std: "docker" "start" "-a" "8df7acfcfcf6d6e369065a84c798e82ea8b10b0f5c1aeabcf4053f1047849c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8df7acfcfcf6d6e369065a84c798e82ea8b10b0f5c1aeabcf4053f1047849c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8df7acfcfcf6d6e369065a84c798e82ea8b10b0f5c1aeabcf4053f1047849c2f", kill_on_drop: false }`
[INFO] [stdout] 8df7acfcfcf6d6e369065a84c798e82ea8b10b0f5c1aeabcf4053f1047849c2f
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+2e6fc425411280c658d852813de01c5157255088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c93369bdbc9353e639c14fcdeb6dcb279cc81a33c89f6624f6b05d06ce54d48b
[INFO] running `Command { std: "docker" "start" "-a" "c93369bdbc9353e639c14fcdeb6dcb279cc81a33c89f6624f6b05d06ce54d48b", kill_on_drop: false }`
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[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> src/widgets/dropdown.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn render(&mut self, gfx: &mut Graphics, _: &Window) -> Result<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromIterator<()>` will fail
[INFO] [stdout]    --> src/widgets/dropdown.rs:207:28
[INFO] [stdout]     |
[INFO] [stdout] 207 |                 .collect::<Result<_>>()?;
[INFO] [stdout]     |                            ^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this function depends on never type fallback being `()`
[INFO] [stdout]    --> src/widgets/dropdown.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn render(&mut self, gfx: &mut Graphics, _: &Window) -> Result<()> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
[INFO] [stdout]     = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: FromIterator<()>` will fail
[INFO] [stdout]    --> src/widgets/dropdown.rs:207:28
[INFO] [stdout]     |
[INFO] [stdout] 207 |                 .collect::<Result<_>>()?;
[INFO] [stdout]     |                            ^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.16s
[INFO] running `Command { std: "docker" "inspect" "c93369bdbc9353e639c14fcdeb6dcb279cc81a33c89f6624f6b05d06ce54d48b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c93369bdbc9353e639c14fcdeb6dcb279cc81a33c89f6624f6b05d06ce54d48b", kill_on_drop: false }`
[INFO] [stdout] c93369bdbc9353e639c14fcdeb6dcb279cc81a33c89f6624f6b05d06ce54d48b