[INFO] fetching crate stable-block-arena 0.1.0...
[INFO] testing stable-block-arena-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate stable-block-arena 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate stable-block-arena 0.1.0
[INFO] finished tweaking crates.io crate stable-block-arena 0.1.0
[INFO] tweaked toml for crates.io crate stable-block-arena 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stable-block-arena 0.1.0 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 stable-block-arena 0.1.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 18e3d23a0557ad222764dbc25e95119161f5022a9595284f259ebe5501e09079
[INFO] running `Command { std: "docker" "start" "-a" "18e3d23a0557ad222764dbc25e95119161f5022a9595284f259ebe5501e09079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18e3d23a0557ad222764dbc25e95119161f5022a9595284f259ebe5501e09079", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e3d23a0557ad222764dbc25e95119161f5022a9595284f259ebe5501e09079", kill_on_drop: false }`
[INFO] [stdout] 18e3d23a0557ad222764dbc25e95119161f5022a9595284f259ebe5501e09079
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fbe5119f919961fddaa6341d952d4b302955d7392254c5b7e99ceb659f600aa0
[INFO] running `Command { std: "docker" "start" "-a" "fbe5119f919961fddaa6341d952d4b302955d7392254c5b7e99ceb659f600aa0", kill_on_drop: false }`
[INFO] [stderr]    Compiling stable-block-arena v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `block_size` is never read
[INFO] [stdout]   --> src/arena.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Arena<T> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     block_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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "fbe5119f919961fddaa6341d952d4b302955d7392254c5b7e99ceb659f600aa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbe5119f919961fddaa6341d952d4b302955d7392254c5b7e99ceb659f600aa0", kill_on_drop: false }`
[INFO] [stdout] fbe5119f919961fddaa6341d952d4b302955d7392254c5b7e99ceb659f600aa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8f67b12eaecac75a0a819fc146e58774899557c436695c263a01cc52f292acc8
[INFO] running `Command { std: "docker" "start" "-a" "8f67b12eaecac75a0a819fc146e58774899557c436695c263a01cc52f292acc8", kill_on_drop: false }`
[INFO] [stdout] warning: field `block_size` is never read
[INFO] [stdout]   --> src/arena.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Arena<T> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     block_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 stable-block-arena v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `block_size` is never read
[INFO] [stdout]   --> src/arena.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Arena<T> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     block_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]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "8f67b12eaecac75a0a819fc146e58774899557c436695c263a01cc52f292acc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f67b12eaecac75a0a819fc146e58774899557c436695c263a01cc52f292acc8", kill_on_drop: false }`
[INFO] [stdout] 8f67b12eaecac75a0a819fc146e58774899557c436695c263a01cc52f292acc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9bdd275b107866d6657c11f86e1c6488710f9bd9c464dee1d891f997fad5746a
[INFO] running `Command { std: "docker" "start" "-a" "9bdd275b107866d6657c11f86e1c6488710f9bd9c464dee1d891f997fad5746a", kill_on_drop: false }`
[INFO] [stderr] warning: field `block_size` is never read
[INFO] [stdout] 
[INFO] [stderr]   --> src/arena.rs:15:5
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]  9 | pub struct Arena<T> {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stdout] 
[INFO] [stderr] ...
[INFO] [stderr] 15 |     block_size: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stable-block-arena` (lib) generated 1 warning
[INFO] [stderr] warning: `stable-block-arena` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stable_block_arena-9580fd016d5ebb7a)
[INFO] [stderr]    Doc-tests stable_block_arena
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::compact (line 111) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/arena.rs - arena::Arena<T>::compact (line 111) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `stable_vec`
[INFO] [stdout]    --> src/arena.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 | use stable_vec:: StableVec;
[INFO] [stdout]     |     ^^^^^^^^^^ use of unresolved module or unlinked crate `stable_vec`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `stable_vec`, use `cargo add stable_vec` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/arena.rs - arena::Arena<T>::compact (line 111)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.24s; merged doctests compilation took 0.15s
[INFO] running `Command { std: "docker" "inspect" "9bdd275b107866d6657c11f86e1c6488710f9bd9c464dee1d891f997fad5746a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bdd275b107866d6657c11f86e1c6488710f9bd9c464dee1d891f997fad5746a", kill_on_drop: false }`
[INFO] [stdout] 9bdd275b107866d6657c11f86e1c6488710f9bd9c464dee1d891f997fad5746a
