[INFO] fetching crate villa01-data-structures 0.2.0...
[INFO] testing villa01-data-structures-0.2.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate villa01-data-structures 0.2.0 into /workspace/builds/worker-4-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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate villa01-data-structures 0.2.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0dd32a43537bbd0e01ad67f3682402feda5ebe05355c76ef59f73efc68a446a5
[INFO] running `Command { std: "docker" "start" "-a" "0dd32a43537bbd0e01ad67f3682402feda5ebe05355c76ef59f73efc68a446a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0dd32a43537bbd0e01ad67f3682402feda5ebe05355c76ef59f73efc68a446a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dd32a43537bbd0e01ad67f3682402feda5ebe05355c76ef59f73efc68a446a5", kill_on_drop: false }`
[INFO] [stdout] 0dd32a43537bbd0e01ad67f3682402feda5ebe05355c76ef59f73efc68a446a5
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca6aa0ddc3d62a0cf2c7dcef8a3aa392481b1bf88a3cad2a9fcbf342628be3d6
[INFO] running `Command { std: "docker" "start" "-a" "ca6aa0ddc3d62a0cf2c7dcef8a3aa392481b1bf88a3cad2a9fcbf342628be3d6", 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 0.24s
[INFO] running `Command { std: "docker" "inspect" "ca6aa0ddc3d62a0cf2c7dcef8a3aa392481b1bf88a3cad2a9fcbf342628be3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca6aa0ddc3d62a0cf2c7dcef8a3aa392481b1bf88a3cad2a9fcbf342628be3d6", kill_on_drop: false }`
[INFO] [stdout] ca6aa0ddc3d62a0cf2c7dcef8a3aa392481b1bf88a3cad2a9fcbf342628be3d6
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d3ab1e412d9178e9de8ed2caab89808921a199582b48bd727ca10cbdca7c37f
[INFO] running `Command { std: "docker" "start" "-a" "3d3ab1e412d9178e9de8ed2caab89808921a199582b48bd727ca10cbdca7c37f", 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 0.76s
[INFO] running `Command { std: "docker" "inspect" "3d3ab1e412d9178e9de8ed2caab89808921a199582b48bd727ca10cbdca7c37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d3ab1e412d9178e9de8ed2caab89808921a199582b48bd727ca10cbdca7c37f", kill_on_drop: false }`
[INFO] [stdout] 3d3ab1e412d9178e9de8ed2caab89808921a199582b48bd727ca10cbdca7c37f
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3ea00cd34000614fab7edeb265496321954e13aa61ecd419b76f6127080a080e
[INFO] running `Command { std: "docker" "start" "-a" "3ea00cd34000614fab7edeb265496321954e13aa61ecd419b76f6127080a080e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/villa01_data_structures-829e5123bf84aa1a)
[INFO] [stdout] 
[INFO] [stdout] running 70 tests
[INFO] [stdout] test doubly_linked_list::delete::test::delete_first_element ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::delete_one_middle_element ... ok
[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_first::test::test_delete_first_empty_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_last::test::test_delete_first_multi_item_list ... ok
[INFO] [stdout] test doubly_linked_list::delete_first::test::test_delete_until_empty ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::length_should_decrease ... 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_until_empty ... ok
[INFO] [stdout] test doubly_linked_list::display::test::test_displaying_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_delete_first_multi_item_list ... ok
[INFO] [stdout] test doubly_linked_list::get::test::test_at_zero ... ok
[INFO] [stdout] test doubly_linked_list::get::test::test_at_len ... ok
[INFO] [stdout] test doubly_linked_list::delete::test::in_of_bounds ... ok
[INFO] [stdout] test doubly_linked_list::delete_last::test::test_list_integrity_after_delete_last ... ok
[INFO] [stdout] test doubly_linked_list::get::test::test_with_several_nodes_from_end ... ok
[INFO] [stdout] test doubly_linked_list::get::test::test_with_several_nodes_from_start ... ok
[INFO] [stdout] test doubly_linked_list::get_first::test::test_get_first_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::get_first::test::test_get_first_verify_inmutable ... ok
[INFO] [stdout] test doubly_linked_list::get_first::test::test_get_first ... ok
[INFO] [stdout] test doubly_linked_list::delete_last::test::test_delete_last_one_item_list ... ok
[INFO] [stdout] test doubly_linked_list::get_last::test::test_get_last_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::get_last_mut::test::test_get_last ... ok
[INFO] [stdout] test doubly_linked_list::get_last_mut::test::test_get_last_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::get_last::test::test_get_last ... ok
[INFO] [stdout] test doubly_linked_list::get_first_mut::test::test_get_first_empty_list ... ok
[INFO] [stdout] test doubly_linked_list::get_mut::test::test_at_len ... 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-829e5123bf84aa1a` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "3ea00cd34000614fab7edeb265496321954e13aa61ecd419b76f6127080a080e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ea00cd34000614fab7edeb265496321954e13aa61ecd419b76f6127080a080e", kill_on_drop: false }`
[INFO] [stdout] 3ea00cd34000614fab7edeb265496321954e13aa61ecd419b76f6127080a080e