[INFO] fetching crate lovm2_std 0.4.8...
[INFO] testing lovm2_std-0.4.8 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate lovm2_std 0.4.8 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate lovm2_std 0.4.8
[INFO] finished tweaking crates.io crate lovm2_std 0.4.8
[INFO] tweaked toml for crates.io crate lovm2_std 0.4.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lovm2_std 0.4.8 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 179 packages to latest compatible versions
[INFO] [stderr]       Adding httptest v0.14.0 (available: v0.16.3)
[INFO] [stderr]       Adding tiny_http v0.7.0 (available: v0.12.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8457d87c7e4d6fe91c7daa0cb5c7dcb269ceda4440ce6e8a8c310d9c445c36f
[INFO] running `Command { std: "docker" "start" "-a" "a8457d87c7e4d6fe91c7daa0cb5c7dcb269ceda4440ce6e8a8c310d9c445c36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8457d87c7e4d6fe91c7daa0cb5c7dcb269ceda4440ce6e8a8c310d9c445c36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8457d87c7e4d6fe91c7daa0cb5c7dcb269ceda4440ce6e8a8c310d9c445c36f", kill_on_drop: false }`
[INFO] [stdout] a8457d87c7e4d6fe91c7daa0cb5c7dcb269ceda4440ce6e8a8c310d9c445c36f
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60938feab0540d85c86e23c9dacbf48a6af6bb009175e84ac5ef04641fc94e26
[INFO] running `Command { std: "docker" "start" "-a" "60938feab0540d85c86e23c9dacbf48a6af6bb009175e84ac5ef04641fc94e26", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling icu_normalizer v2.0.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling curl v0.4.49
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling lovm2_module v0.1.0
[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/lovm2_module-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lovm2_module` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "60938feab0540d85c86e23c9dacbf48a6af6bb009175e84ac5ef04641fc94e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60938feab0540d85c86e23c9dacbf48a6af6bb009175e84ac5ef04641fc94e26", kill_on_drop: false }`
[INFO] [stdout] 60938feab0540d85c86e23c9dacbf48a6af6bb009175e84ac5ef04641fc94e26