[INFO] fetching crate prey 0.1.2...
[INFO] testing prey-0.1.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate prey 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate prey 0.1.2
[INFO] finished tweaking crates.io crate prey 0.1.2
[INFO] tweaked toml for crates.io crate prey 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prey 0.1.2 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 prey 0.1.2 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-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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e5609f8fd7d0993e3c9d0d9613ad26b10ca2f77edc2dfdc6d0ca183b90bc5581
[INFO] running `Command { std: "docker" "start" "-a" "e5609f8fd7d0993e3c9d0d9613ad26b10ca2f77edc2dfdc6d0ca183b90bc5581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5609f8fd7d0993e3c9d0d9613ad26b10ca2f77edc2dfdc6d0ca183b90bc5581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5609f8fd7d0993e3c9d0d9613ad26b10ca2f77edc2dfdc6d0ca183b90bc5581", kill_on_drop: false }`
[INFO] [stdout] e5609f8fd7d0993e3c9d0d9613ad26b10ca2f77edc2dfdc6d0ca183b90bc5581
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 70d29d6ea5f83d1b750a8c67e21aea51da65fd462c872cdf7fd8c18cf77b13c8
[INFO] running `Command { std: "docker" "start" "-a" "70d29d6ea5f83d1b750a8c67e21aea51da65fd462c872cdf7fd8c18cf77b13c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling prey v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `capacity`, `head`, and `size` are never read
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Buffer {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 41 |     ptr: *mut u8,
[INFO] [stdout] 42 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 43 |     head: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 44 |     size: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `storage` and `capacity` are never read
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct BufferPool {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 65 |     storage: *mut u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 66 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "70d29d6ea5f83d1b750a8c67e21aea51da65fd462c872cdf7fd8c18cf77b13c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d29d6ea5f83d1b750a8c67e21aea51da65fd462c872cdf7fd8c18cf77b13c8", kill_on_drop: false }`
[INFO] [stdout] 70d29d6ea5f83d1b750a8c67e21aea51da65fd462c872cdf7fd8c18cf77b13c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6e818417105c2bb30f6b97cd977afd71eac26d615e4e95b6122739dd8428dcf
[INFO] running `Command { std: "docker" "start" "-a" "b6e818417105c2bb30f6b97cd977afd71eac26d615e4e95b6122739dd8428dcf", kill_on_drop: false }`
[INFO] [stdout] warning: fields `capacity`, `head`, and `size` are never read
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Buffer {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 41 |     ptr: *mut u8,
[INFO] [stdout] 42 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 43 |     head: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 44 |     size: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling prey v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `storage` and `capacity` are never read
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct BufferPool {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 65 |     storage: *mut u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 66 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `capacity`, `head`, and `size` are never read
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Buffer {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 41 |     ptr: *mut u8,
[INFO] [stdout] 42 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 43 |     head: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 44 |     size: usize,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `storage` and `capacity` are never read
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub struct BufferPool {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 65 |     storage: *mut u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 66 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "b6e818417105c2bb30f6b97cd977afd71eac26d615e4e95b6122739dd8428dcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6e818417105c2bb30f6b97cd977afd71eac26d615e4e95b6122739dd8428dcf", kill_on_drop: false }`
[INFO] [stdout] b6e818417105c2bb30f6b97cd977afd71eac26d615e4e95b6122739dd8428dcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ee2d808f6a0aec98178e13c6a197df52563d1c73e7bbfe725e48742a0ba4fe9b
[INFO] running `Command { std: "docker" "start" "-a" "ee2d808f6a0aec98178e13c6a197df52563d1c73e7bbfe725e48742a0ba4fe9b", kill_on_drop: false }`
[INFO] [stderr] warning: fields `capacity`, `head`, and `size` are never read
[INFO] [stderr]   --> src/lib.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct Buffer {
[INFO] [stderr]    |            ------ fields in this struct
[INFO] [stderr] 41 |     ptr: *mut u8,
[INFO] [stderr] 42 |     capacity: usize,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 43 |     head: usize,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 44 |     size: usize,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `storage` and `capacity` are never read
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 64 | pub struct BufferPool {
[INFO] [stderr]    |            ---------- fields in this struct
[INFO] [stderr] 65 |     storage: *mut u8,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 66 |     capacity: usize,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `prey` (lib) generated 2 warnings
[INFO] [stderr] warning: `prey` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/prey-71675125ee09eb5a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prey
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ee2d808f6a0aec98178e13c6a197df52563d1c73e7bbfe725e48742a0ba4fe9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2d808f6a0aec98178e13c6a197df52563d1c73e7bbfe725e48742a0ba4fe9b", kill_on_drop: false }`
[INFO] [stdout] ee2d808f6a0aec98178e13c6a197df52563d1c73e7bbfe725e48742a0ba4fe9b
