[INFO] fetching crate rstl-stack 0.1.1...
[INFO] testing rstl-stack-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rstl-stack 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rstl-stack 0.1.1
[INFO] finished tweaking crates.io crate rstl-stack 0.1.1
[INFO] tweaked toml for crates.io crate rstl-stack 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rstl-stack 0.1.1 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 rstl-stack 0.1.1 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a48e311d8d629cc7f21aba4aefa77d14d702bec8fb7eb4ad2c91e5cbd7b8057c
[INFO] running `Command { std: "docker" "start" "-a" "a48e311d8d629cc7f21aba4aefa77d14d702bec8fb7eb4ad2c91e5cbd7b8057c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a48e311d8d629cc7f21aba4aefa77d14d702bec8fb7eb4ad2c91e5cbd7b8057c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a48e311d8d629cc7f21aba4aefa77d14d702bec8fb7eb4ad2c91e5cbd7b8057c", kill_on_drop: false }`
[INFO] [stdout] a48e311d8d629cc7f21aba4aefa77d14d702bec8fb7eb4ad2c91e5cbd7b8057c
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 109a02919682954df92d9ca0d6a3bdb20cfb5df76e36e533f6026bb312af1d02
[INFO] running `Command { std: "docker" "start" "-a" "109a02919682954df92d9ca0d6a3bdb20cfb5df76e36e533f6026bb312af1d02", kill_on_drop: false }`
[INFO] [stderr]    Compiling rstl-collection v0.1.1
[INFO] [stderr]    Compiling rstl-stack v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "109a02919682954df92d9ca0d6a3bdb20cfb5df76e36e533f6026bb312af1d02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109a02919682954df92d9ca0d6a3bdb20cfb5df76e36e533f6026bb312af1d02", kill_on_drop: false }`
[INFO] [stdout] 109a02919682954df92d9ca0d6a3bdb20cfb5df76e36e533f6026bb312af1d02
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1896f28bfd9f6fc5b088730bf229102b1f4107b6ec429c6405243f16936cadeb
[INFO] running `Command { std: "docker" "start" "-a" "1896f28bfd9f6fc5b088730bf229102b1f4107b6ec429c6405243f16936cadeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling zerocopy v0.8.47
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling anstyle v1.0.14
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling clap v4.6.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling zerocopy-derive v0.8.47
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling rstl-stack v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 33.56s
[INFO] running `Command { std: "docker" "inspect" "1896f28bfd9f6fc5b088730bf229102b1f4107b6ec429c6405243f16936cadeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1896f28bfd9f6fc5b088730bf229102b1f4107b6ec429c6405243f16936cadeb", kill_on_drop: false }`
[INFO] [stdout] 1896f28bfd9f6fc5b088730bf229102b1f4107b6ec429c6405243f16936cadeb
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ccd9a8bbd7918a46d5a5de7796f9f414ad8a179a95d0b2010a75eb6b51983fc2
[INFO] running `Command { std: "docker" "start" "-a" "ccd9a8bbd7918a46d5a5de7796f9f414ad8a179a95d0b2010a75eb6b51983fc2", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rstl_stack-0b145dee6319dcd6)
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test circular_stack::tests::circular_stack_like_ops_should_work ... ok
[INFO] [stdout] test circular_stack::tests::iter_and_into_iter_should_report_exact_size_hint ... ok
[INFO] [stdout] test circular_stack::tests::push_pop_and_replace_top_should_handle_single_and_empty_states ... ok
[INFO] [stdout] test circular_stack::tests::pushes_should_support_empty_input_without_side_effects ... ok
[INFO] [stdout] test circular_stack::tests::rearrange_should_preserve_order_for_sparse_wrapped_state ... ok
[INFO] [stdout] test circular_stack::tests::resize_grow_should_preserve_order_for_shifted_non_wrapped_state ... ok
[INFO] [stdout] test circular_stack::tests::fork_should_create_independent_snapshot ... ok
[INFO] [stdout] test circular_stack::tests::constructor_should_validate_capacity ... ok
[INFO] [stdout] test traits::tests::default_replace_top_should_work_for_empty_and_non_empty_stack ... ok
[INFO] [stdout] test circular_stack::tests::stack_like_ops_should_work ... ok
[INFO] [stdout] test circular_stack::tests::retain_should_filter_and_preserve_order ... ok
[INFO] [stdout] test error::tests::error_source_should_be_none ... ok
[INFO] [stdout] test traits::tests::default_pushes_should_push_elements_in_order ... ok
[INFO] [stdout] test circular_stack::tests::fork_should_preserve_wrapped_layout_observable_behavior ... ok
[INFO] [stdout] test circular_stack::tests::rearrange_should_handle_empty_and_sparse_shifted_non_wrapped_state ... ok
[INFO] [stdout] test circular_stack::tests::rearrange_should_preserve_order_for_dense_wrapped_state ... ok
[INFO] [stdout] test circular_stack::tests::resize_should_reject_zero_capacity ... ok
[INFO] [stdout] test circular_stack::tests::resize_should_keep_latest_on_shrink_and_support_growth ... ok
[INFO] [stdout] test circular_stack::tests::collection_and_dispose_contract_should_work ... ok
[INFO] [stdout] test traits::tests::default_fork_should_clone_stack_snapshot ... ok
[INFO] [stdout] test error::tests::display_should_format_invalid_capacity ... ok
[INFO] [stdout] test circular_stack::tests::retain_should_return_zero_on_empty_stack ... ok
[INFO] [stdout] test circular_stack::tests::at_and_update_should_work ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rstl_stack
[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" "ccd9a8bbd7918a46d5a5de7796f9f414ad8a179a95d0b2010a75eb6b51983fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccd9a8bbd7918a46d5a5de7796f9f414ad8a179a95d0b2010a75eb6b51983fc2", kill_on_drop: false }`
[INFO] [stdout] ccd9a8bbd7918a46d5a5de7796f9f414ad8a179a95d0b2010a75eb6b51983fc2
