[INFO] fetching crate vertigo-browserdriver 0.1.0-beta.3...
[INFO] testing vertigo-browserdriver-0.1.0-beta.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate vertigo-browserdriver 0.1.0-beta.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate vertigo-browserdriver 0.1.0-beta.3
[INFO] finished tweaking crates.io crate vertigo-browserdriver 0.1.0-beta.3
[INFO] tweaked toml for crates.io crate vertigo-browserdriver 0.1.0-beta.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vertigo-browserdriver 0.1.0-beta.3 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding vertigo v0.1.1 (available: v0.11.4)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5af113bb24dee422bb84c4d73c7b9c52b6c3ace55ae664371864733354eb31dc
[INFO] running `Command { std: "docker" "start" "-a" "5af113bb24dee422bb84c4d73c7b9c52b6c3ace55ae664371864733354eb31dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5af113bb24dee422bb84c4d73c7b9c52b6c3ace55ae664371864733354eb31dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af113bb24dee422bb84c4d73c7b9c52b6c3ace55ae664371864733354eb31dc", kill_on_drop: false }`
[INFO] [stdout] 5af113bb24dee422bb84c4d73c7b9c52b6c3ace55ae664371864733354eb31dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b1816008bcbe7084e8056092869c862bdadd463153f1a39385d2b4c53e4929d8
[INFO] running `Command { std: "docker" "start" "-a" "b1816008bcbe7084e8056092869c862bdadd463153f1a39385d2b4c53e4929d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling vertigo v0.1.1
[INFO] [stderr]    Compiling vertigo-browserdriver v0.1.0-beta.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling pest v2.8.6
[INFO] [stderr]    Compiling pest_meta v2.8.6
[INFO] [stderr]    Compiling pest_generator v2.8.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling syn-rsx v0.8.1
[INFO] [stderr]    Compiling pest_derive v2.8.6
[INFO] [stderr]    Compiling vertigo-macro v0.1.1
[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/vertigo-0.1.1/src/lib.rs:85:1
[INFO] [stdout]    |
[INFO] [stdout] 85 | #![feature(try_trait_v2)] // https://github.com/rust-lang/rust/issues/84277
[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 `vertigo` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b1816008bcbe7084e8056092869c862bdadd463153f1a39385d2b4c53e4929d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1816008bcbe7084e8056092869c862bdadd463153f1a39385d2b4c53e4929d8", kill_on_drop: false }`
[INFO] [stdout] b1816008bcbe7084e8056092869c862bdadd463153f1a39385d2b4c53e4929d8
