[INFO] fetching crate villa01-data-structures 0.2.0...
[INFO] testing villa01-data-structures-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate villa01-data-structures 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate villa01-data-structures 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate villa01-data-structures 0.2.0
[INFO] tweaked toml for crates.io crate villa01-data-structures 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate villa01-data-structures 0.2.0 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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63f6c6922ee4fe48a5b839b3b41950f8b53b41253614d97249ef69d272a2f99f
[INFO] running `Command { std: "docker" "start" "-a" "63f6c6922ee4fe48a5b839b3b41950f8b53b41253614d97249ef69d272a2f99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63f6c6922ee4fe48a5b839b3b41950f8b53b41253614d97249ef69d272a2f99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f6c6922ee4fe48a5b839b3b41950f8b53b41253614d97249ef69d272a2f99f", kill_on_drop: false }`
[INFO] [stdout] 63f6c6922ee4fe48a5b839b3b41950f8b53b41253614d97249ef69d272a2f99f
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b8f10e15e72ed8134889c52adf88cfbbd72f0bc09e1cbeaa25ee75347e787dc
[INFO] running `Command { std: "docker" "start" "-a" "9b8f10e15e72ed8134889c52adf88cfbbd72f0bc09e1cbeaa25ee75347e787dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling villa01-data-structures v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "9b8f10e15e72ed8134889c52adf88cfbbd72f0bc09e1cbeaa25ee75347e787dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b8f10e15e72ed8134889c52adf88cfbbd72f0bc09e1cbeaa25ee75347e787dc", kill_on_drop: false }`
[INFO] [stdout] 9b8f10e15e72ed8134889c52adf88cfbbd72f0bc09e1cbeaa25ee75347e787dc
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b917ad7ce55282d4e07d573a7150ef422a27a0b8cd0d73e69024b5eb1d9bac6
[INFO] running `Command { std: "docker" "start" "-a" "4b917ad7ce55282d4e07d573a7150ef422a27a0b8cd0d73e69024b5eb1d9bac6", kill_on_drop: false }`
[INFO] [stderr]    Compiling villa01-data-structures v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "4b917ad7ce55282d4e07d573a7150ef422a27a0b8cd0d73e69024b5eb1d9bac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b917ad7ce55282d4e07d573a7150ef422a27a0b8cd0d73e69024b5eb1d9bac6", kill_on_drop: false }`
[INFO] [stdout] 4b917ad7ce55282d4e07d573a7150ef422a27a0b8cd0d73e69024b5eb1d9bac6
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 94dbd1ba4ff6769f7f381c2d2014b0867caaf0b225f12aee02b9464c0abeca8b
[INFO] running `Command { std: "docker" "start" "-a" "94dbd1ba4ff6769f7f381c2d2014b0867caaf0b225f12aee02b9464c0abeca8b", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/villa01_data_structures-cc063ff71a5d6666)
[INFO] [stdout] 
[INFO] [stdout] running 70 tests
[INFO] [stdout] test doubly_linked_list::delete::test::delete_last_element ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::delete_multiple_elements ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::length_should_decrease ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::delete_one_middle_element ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::in_of_bounds ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::delete_first_element ... ok
[INFO] [stdout] test doubly_linked_list::delete_first::test::test_delete_first_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::delete_first::test::test_delete_first_one_item_list ... ok
[INFO] [stdout] test doubly_linked_list::delete_first::test::test_list_integrity_after_delete_first ... ok
[INFO] [stdout] test doubly_linked_list::delete_first::test::test_delete_first_multi_item_list ... ok
[INFO] [stdout] test doubly_linked_list::delete_last::test::test_delete_last_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::delete_last::test::test_delete_first_multi_item_list ... ok
[INFO] [stdout] test doubly_linked_list::delete_last::test::test_list_integrity_after_delete_last ... ok
[INFO] [stdout] test doubly_linked_list::display::test::test_displaying_list ... ok
[INFO] [stdout] test doubly_linked_list::get::test::test_at_len ... ok
[INFO] [stdout] test doubly_linked_list::get::test::test_with_several_nodes_from_end ... ok
[INFO] [stdout] test doubly_linked_list::get_first::test::test_get_first_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::get_first_mut::test::test_get_first ... ok
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/villa01_data_structures-cc063ff71a5d6666` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "94dbd1ba4ff6769f7f381c2d2014b0867caaf0b225f12aee02b9464c0abeca8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94dbd1ba4ff6769f7f381c2d2014b0867caaf0b225f12aee02b9464c0abeca8b", kill_on_drop: false }`
[INFO] [stdout] 94dbd1ba4ff6769f7f381c2d2014b0867caaf0b225f12aee02b9464c0abeca8b