[INFO] fetching crate umm-malloc 0.3.2...
[INFO] testing umm-malloc-0.3.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate umm-malloc 0.3.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate umm-malloc 0.3.2
[INFO] finished tweaking crates.io crate umm-malloc 0.3.2
[INFO] tweaked toml for crates.io crate umm-malloc 0.3.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate umm-malloc 0.3.2 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 umm-malloc 0.3.2 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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1370fa615204dde119e4f415d49d565f4a095924188ae7cd7ce71cf3b0788f9
[INFO] running `Command { std: "docker" "start" "-a" "a1370fa615204dde119e4f415d49d565f4a095924188ae7cd7ce71cf3b0788f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1370fa615204dde119e4f415d49d565f4a095924188ae7cd7ce71cf3b0788f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1370fa615204dde119e4f415d49d565f4a095924188ae7cd7ce71cf3b0788f9", kill_on_drop: false }`
[INFO] [stdout] a1370fa615204dde119e4f415d49d565f4a095924188ae7cd7ce71cf3b0788f9
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bf685edc60e9c566252958221745d3a070518c5fb8d9657fb8ffda11c36e84d
[INFO] running `Command { std: "docker" "start" "-a" "2bf685edc60e9c566252958221745d3a070518c5fb8d9657fb8ffda11c36e84d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling umm-malloc-sys v0.3.2
[INFO] [stderr]    Compiling umm-malloc v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: A critical section cargo feature must be enabled
[INFO] [stdout]    --> src/lib.rs:156:1
[INFO] [stdout]     |
[INFO] [stdout] 156 | compile_error!("A critical section cargo feature must be enabled");
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `umm-malloc` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2bf685edc60e9c566252958221745d3a070518c5fb8d9657fb8ffda11c36e84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bf685edc60e9c566252958221745d3a070518c5fb8d9657fb8ffda11c36e84d", kill_on_drop: false }`
[INFO] [stdout] 2bf685edc60e9c566252958221745d3a070518c5fb8d9657fb8ffda11c36e84d