[INFO] cloning repository https://github.com/voith/rusty-structures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/voith/rusty-structures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoith%2Frusty-structures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoith%2Frusty-structures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c01247201e2db221a38cb52895368032d3398948
[INFO] testing voith/rusty-structures/c01247201e2db221a38cb52895368032d3398948 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_getrandom_patch_2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvoith%2Frusty-structures" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/voith/rusty-structures
[INFO] finished tweaking git repo https://github.com/voith/rusty-structures
[INFO] tweaked toml for git repo https://github.com/voith/rusty-structures written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/voith/rusty-structures on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/voith/rusty-structures 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b08bb7514834c5470edd34c8946fde8bd45da93ab7674071d584be94d03feb55
[INFO] running `Command { std: "docker" "start" "-a" "b08bb7514834c5470edd34c8946fde8bd45da93ab7674071d584be94d03feb55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b08bb7514834c5470edd34c8946fde8bd45da93ab7674071d584be94d03feb55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08bb7514834c5470edd34c8946fde8bd45da93ab7674071d584be94d03feb55", kill_on_drop: false }`
[INFO] [stdout] b08bb7514834c5470edd34c8946fde8bd45da93ab7674071d584be94d03feb55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d87ff2746f8d7bf0a88f4254ecd44fe6686afd368c2716c644e6aa9a17a1845d
[INFO] running `Command { std: "docker" "start" "-a" "d87ff2746f8d7bf0a88f4254ecd44fe6686afd368c2716c644e6aa9a17a1845d", kill_on_drop: false }`
[INFO] [stderr]    Compiling data_structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/dancing_links.rs:224:28
[INFO] [stdout]     |
[INFO] [stdout] 224 |             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stdout]     |                            ^^                                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 224 -             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stdout] 224 +             current_node = current_node.borrow().up.clone().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/dancing_links.rs:263:21
[INFO] [stdout]     |
[INFO] [stdout] 263 |                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stdout]     |                     ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 263 -                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stdout] 263 +                 c = c.borrow().right.clone().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "d87ff2746f8d7bf0a88f4254ecd44fe6686afd368c2716c644e6aa9a17a1845d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d87ff2746f8d7bf0a88f4254ecd44fe6686afd368c2716c644e6aa9a17a1845d", kill_on_drop: false }`
[INFO] [stdout] d87ff2746f8d7bf0a88f4254ecd44fe6686afd368c2716c644e6aa9a17a1845d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 3285a7a234d38ce24adf3f6933c8af5dcbeb145e8105a259f04563af155a62af
[INFO] running `Command { std: "docker" "start" "-a" "3285a7a234d38ce24adf3f6933c8af5dcbeb145e8105a259f04563af155a62af", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/dancing_links.rs:224:28
[INFO] [stdout]     |
[INFO] [stdout] 224 |             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stdout]     |                            ^^                                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 224 -             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stdout] 224 +             current_node = current_node.borrow().up.clone().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/dancing_links.rs:263:21
[INFO] [stdout]     |
[INFO] [stdout] 263 |                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stdout]     |                     ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 263 -                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stdout] 263 +                 c = c.borrow().right.clone().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling data_structures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/dancing_links.rs:224:28
[INFO] [stdout]     |
[INFO] [stdout] 224 |             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stdout]     |                            ^^                                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 224 -             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stdout] 224 +             current_node = current_node.borrow().up.clone().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/dancing_links.rs:263:21
[INFO] [stdout]     |
[INFO] [stdout] 263 |                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stdout]     |                     ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 263 -                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stdout] 263 +                 c = c.borrow().right.clone().unwrap();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "3285a7a234d38ce24adf3f6933c8af5dcbeb145e8105a259f04563af155a62af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3285a7a234d38ce24adf3f6933c8af5dcbeb145e8105a259f04563af155a62af", kill_on_drop: false }`
[INFO] [stdout] 3285a7a234d38ce24adf3f6933c8af5dcbeb145e8105a259f04563af155a62af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 5f42f308e265f50d5b72e185fa49d470ac3219322e7d0eef97791cac218e6158
[INFO] running `Command { std: "docker" "start" "-a" "5f42f308e265f50d5b72e185fa49d470ac3219322e7d0eef97791cac218e6158", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/dancing_links.rs:224:28
[INFO] [stderr]     |
[INFO] [stderr] 224 |             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stderr]     |                            ^^                                         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 224 -             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stderr] 224 +             current_node = current_node.borrow().up.clone().unwrap();
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/dancing_links.rs:263:21
[INFO] [stderr]     |
[INFO] [stderr] 263 |                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stderr]     |                     ^^                                 ^^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 263 -                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stderr] 263 +                 c = c.borrow().right.clone().unwrap();
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `data_structures` (lib) generated 2 warnings (run `cargo fix --lib -p data_structures` to apply 2 suggestions)
[INFO] [stderr] warning: `data_structures` (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/x86_64-unknown-linux-musl/debug/deps/data_structures-d7d95a4140315c32)
[INFO] [stdout] 
[INFO] [stdout] running 33 tests
[INFO] [stdout] test dancing_links::test::test_cover_columns ... ok
[INFO] [stdout] test dancing_links::test::test_from_matrix ... ok
[INFO] [stdout] test dancing_links::test::test_matrix_6x7_solution_135 ... ok
[INFO] [stdout] test dancing_links::test::test_search_finds_r1_r2 ... ok
[INFO] [stdout] test dancing_links::test::test_new_node ... ok
[INFO] [stdout] test dancing_links::test::test_new_col_node ... ok
[INFO] [stdout] test doubly_linked_list::test::test_add_remove_add ... ok
[INFO] [stdout] test dancing_links::test::test_uncover_columns ... ok
[INFO] [stdout] test doubly_linked_list::test::test_add_elements ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_elements ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_non_existent ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_non_existent_from_empty ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_root ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_root_with_one_element ... ok
[INFO] [stdout] test efficient_dancing_links::test::test_from_matrix_small_diagonal ... ok
[INFO] [stdout] test efficient_dancing_links::test::test_new_node ... ok
[INFO] [stdout] test efficient_dancing_links::test::test_search_exact_cover ... ok
[INFO] [stdout] test linked_list::test::test_add ... ok
[INFO] [stdout] test linked_list::test::test_empty_list ... ok
[INFO] [stdout] test linked_list::test::test_print ... ok
[INFO] [stdout] test linked_list::test::test_remove ... ok
[INFO] [stdout] test linked_list::test::test_remove_all_elements ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_same_element ... ok
[INFO] [stdout] test linked_list::test::test_remove_last_node ... ok
[INFO] [stdout] test linked_list::test::test_remove_from_empty_list ... ok
[INFO] [stdout] test linked_list::test::test_remove_root ... ok
[INFO] [stdout] test efficient_dancing_links::test::test_cover_uncover_column0_on_3x3 ... ok
[INFO] [stdout] test efficient_dancing_links::test::test_from_matrix_3x3_diagonal ... ok
[INFO] [stdout] test linked_list::test::test_remove_non_existent ... ok
[INFO] [stdout] test dancing_links::test::test_cover0_cover1_uncover1 ... ok
[INFO] [stdout] test dancing_links::test::test_sudo_solver ... ok
[INFO] [stdout] test dancing_links::test::test_sudo_solver_for_extreme_difficulty ... ok
[INFO] [stdout] test doubly_linked_list::test::test_remove_last_element ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 33 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests data_structures
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/dancing_links.rs:224:28
[INFO] [stderr]     |
[INFO] [stderr] 224 |             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stderr]     |                            ^^                                         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 224 -             current_node = { current_node.borrow().up.clone().unwrap() };
[INFO] [stderr] 224 +             current_node = current_node.borrow().up.clone().unwrap();
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/dancing_links.rs:263:21
[INFO] [stderr]     |
[INFO] [stderr] 263 |                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stderr]     |                     ^^                                 ^^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 263 -                 c = { c.borrow().right.clone().unwrap() };
[INFO] [stderr] 263 +                 c = c.borrow().right.clone().unwrap();
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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" "5f42f308e265f50d5b72e185fa49d470ac3219322e7d0eef97791cac218e6158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f42f308e265f50d5b72e185fa49d470ac3219322e7d0eef97791cac218e6158", kill_on_drop: false }`
[INFO] [stdout] 5f42f308e265f50d5b72e185fa49d470ac3219322e7d0eef97791cac218e6158