[INFO] fetching crate malloc 0.0.4...
[INFO] testing malloc-0.0.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate malloc 0.0.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate malloc 0.0.4
[INFO] finished tweaking crates.io crate malloc 0.0.4
[INFO] tweaked toml for crates.io crate malloc 0.0.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate malloc 0.0.4 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] 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f6a651583388371732ebea6ed2732dd64062edaefd1b0ab9d437adf0e528b052
[INFO] running `Command { std: "docker" "start" "-a" "f6a651583388371732ebea6ed2732dd64062edaefd1b0ab9d437adf0e528b052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6a651583388371732ebea6ed2732dd64062edaefd1b0ab9d437adf0e528b052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a651583388371732ebea6ed2732dd64062edaefd1b0ab9d437adf0e528b052", kill_on_drop: false }`
[INFO] [stdout] f6a651583388371732ebea6ed2732dd64062edaefd1b0ab9d437adf0e528b052
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d09bafc1cd80b342b3f1aefe51c18eab4a9228e727ffca9c172bd10e5125f57a
[INFO] running `Command { std: "docker" "start" "-a" "d09bafc1cd80b342b3f1aefe51c18eab4a9228e727ffca9c172bd10e5125f57a", kill_on_drop: false }`
[INFO] [stderr]    Compiling malloc v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `core::arch::wasm32`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::arch::wasm32;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^ no `wasm32` in `arch`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |         let mut header = &mut *((location-HEADER_SIZE-padding) as *mut Header);
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `malloc` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d09bafc1cd80b342b3f1aefe51c18eab4a9228e727ffca9c172bd10e5125f57a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d09bafc1cd80b342b3f1aefe51c18eab4a9228e727ffca9c172bd10e5125f57a", kill_on_drop: false }`
[INFO] [stdout] d09bafc1cd80b342b3f1aefe51c18eab4a9228e727ffca9c172bd10e5125f57a