[INFO] fetching crate ringboard-wayland 0.12.2...
[INFO] testing ringboard-wayland-0.12.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate ringboard-wayland 0.12.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate ringboard-wayland 0.12.2
[INFO] finished tweaking crates.io crate ringboard-wayland 0.12.2
[INFO] tweaked toml for crates.io crate ringboard-wayland 0.12.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ringboard-wayland 0.12.2 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ringboard-wayland 0.12.2 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8590bf8f22a0debe2e09325a367d1adf0468cc85a52bc804330954b1416fa3ca
[INFO] running `Command { std: "docker" "start" "-a" "8590bf8f22a0debe2e09325a367d1adf0468cc85a52bc804330954b1416fa3ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8590bf8f22a0debe2e09325a367d1adf0468cc85a52bc804330954b1416fa3ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8590bf8f22a0debe2e09325a367d1adf0468cc85a52bc804330954b1416fa3ca", kill_on_drop: false }`
[INFO] [stdout] 8590bf8f22a0debe2e09325a367d1adf0468cc85a52bc804330954b1416fa3ca
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f78fa93db7eb4941dd0e0fa5fb647f8393e81a79d26ee5ba3b6c8b46f763e669
[INFO] running `Command { std: "docker" "start" "-a" "f78fa93db7eb4941dd0e0fa5fb647f8393e81a79d26ee5ba3b6c8b46f763e669", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling bitflags v2.9.2
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling downcast-rs v1.2.1
[INFO] [stderr]    Compiling thiserror v2.0.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling wayland-sys v0.31.7
[INFO] [stderr]    Compiling cc v1.2.33
[INFO] [stderr]    Compiling wayland-client v0.31.11
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling error-stack v0.5.0
[INFO] [stderr]    Compiling winnow v0.7.12
[INFO] [stderr]    Compiling anstyle v1.0.11
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling quick-xml v0.37.5
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling wayland-backend v0.3.11
[INFO] [stderr]    Compiling wayland-scanner v0.31.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling toml_parser v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v2.0.15
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling env_filter v0.1.3
[INFO] [stderr]    Compiling env_logger v0.11.8
[INFO] [stderr]    Compiling clipboard-history-core v0.12.2
[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/clipboard-history-core-0.12.2/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_io_borrowed_buf)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `clipboard-history-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f78fa93db7eb4941dd0e0fa5fb647f8393e81a79d26ee5ba3b6c8b46f763e669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f78fa93db7eb4941dd0e0fa5fb647f8393e81a79d26ee5ba3b6c8b46f763e669", kill_on_drop: false }`
[INFO] [stdout] f78fa93db7eb4941dd0e0fa5fb647f8393e81a79d26ee5ba3b6c8b46f763e669