[INFO] cloning repository https://github.com/IshanKBG/crust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IshanKBG/crust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIshanKBG%2Fcrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIshanKBG%2Fcrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22db36d49a55be72a59aa7a1b3606a3ca029aabc
[INFO] testing IshanKBG/crust against beta-2026-04-21 for beta-1.96-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIshanKBG%2Fcrust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/IshanKBG/crust
[INFO] finished tweaking git repo https://github.com/IshanKBG/crust
[INFO] tweaked toml for git repo https://github.com/IshanKBG/crust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/IshanKBG/crust 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 git repo https://github.com/IshanKBG/crust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.97
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.97
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.42
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.42
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.97
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.97
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.97
[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] 9982e50123ca8ad94af60dfff124eb8360f93ed53b5194857b07324ed52829d4
[INFO] running `Command { std: "docker" "start" "-a" "9982e50123ca8ad94af60dfff124eb8360f93ed53b5194857b07324ed52829d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9982e50123ca8ad94af60dfff124eb8360f93ed53b5194857b07324ed52829d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9982e50123ca8ad94af60dfff124eb8360f93ed53b5194857b07324ed52829d4", kill_on_drop: false }`
[INFO] [stdout] 9982e50123ca8ad94af60dfff124eb8360f93ed53b5194857b07324ed52829d4
[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] f64ef95db05d57a96b3bae30a27abaab18d5fae2a43b7ccd38ae154d5cee7ef9
[INFO] running `Command { std: "docker" "start" "-a" "f64ef95db05d57a96b3bae30a27abaab18d5fae2a43b7ccd38ae154d5cee7ef9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.97
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling wasm-bindgen v0.2.97
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.97
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.97
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.97
[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/wasm-bindgen-macro-0.2.97/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     feature(allow_internal_unstable),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasm-bindgen-macro` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f64ef95db05d57a96b3bae30a27abaab18d5fae2a43b7ccd38ae154d5cee7ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f64ef95db05d57a96b3bae30a27abaab18d5fae2a43b7ccd38ae154d5cee7ef9", kill_on_drop: false }`
[INFO] [stdout] f64ef95db05d57a96b3bae30a27abaab18d5fae2a43b7ccd38ae154d5cee7ef9