[INFO] fetching crate search_trees 0.0.3...
[INFO] testing search_trees-0.0.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate search_trees 0.0.3 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate search_trees 0.0.3
[INFO] finished tweaking crates.io crate search_trees 0.0.3
[INFO] tweaked toml for crates.io crate search_trees 0.0.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate search_trees 0.0.3 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] crate crates.io crate search_trees 0.0.3 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 04b22bc9f44c03f3393de514e9c3d2e8b41728256f996c24e85a995c7211d25d
[INFO] running `Command { std: "docker" "start" "-a" "04b22bc9f44c03f3393de514e9c3d2e8b41728256f996c24e85a995c7211d25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04b22bc9f44c03f3393de514e9c3d2e8b41728256f996c24e85a995c7211d25d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04b22bc9f44c03f3393de514e9c3d2e8b41728256f996c24e85a995c7211d25d", kill_on_drop: false }`
[INFO] [stdout] 04b22bc9f44c03f3393de514e9c3d2e8b41728256f996c24e85a995c7211d25d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 46a3926555b1126dbdbab76569654ff49696f0cc0093a2b09d7cc9e0160d60af
[INFO] running `Command { std: "docker" "start" "-a" "46a3926555b1126dbdbab76569654ff49696f0cc0093a2b09d7cc9e0160d60af", kill_on_drop: false }`
[INFO] [stderr]    Compiling search_trees v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `!` or `::`, found keyword `use`
[INFO] [stdout]   --> src/avltree.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | ppppp
[INFO] [stdout]    |      - expected one of `!` or `::`
[INFO] [stdout] 11 | use std::cell::RefCell;
[INFO] [stdout]    | ^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `search_trees` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "46a3926555b1126dbdbab76569654ff49696f0cc0093a2b09d7cc9e0160d60af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46a3926555b1126dbdbab76569654ff49696f0cc0093a2b09d7cc9e0160d60af", kill_on_drop: false }`
[INFO] [stdout] 46a3926555b1126dbdbab76569654ff49696f0cc0093a2b09d7cc9e0160d60af
