[INFO] fetching crate algorithms_fourth 0.1.10...
[INFO] testing algorithms_fourth-0.1.10 against beta-2025-09-21 for beta-1.91-2
[INFO] extracting crate algorithms_fourth 0.1.10 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate algorithms_fourth 0.1.10
[INFO] finished tweaking crates.io crate algorithms_fourth 0.1.10
[INFO] tweaked toml for crates.io crate algorithms_fourth 0.1.10 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate algorithms_fourth 0.1.10 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] crate crates.io crate algorithms_fourth 0.1.10 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a4a3583fbbacd126329d1a7ac4bca55a564928155979e938433b16be614e6896
[INFO] running `Command { std: "docker" "start" "-a" "a4a3583fbbacd126329d1a7ac4bca55a564928155979e938433b16be614e6896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4a3583fbbacd126329d1a7ac4bca55a564928155979e938433b16be614e6896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a3583fbbacd126329d1a7ac4bca55a564928155979e938433b16be614e6896", kill_on_drop: false }`
[INFO] [stdout] a4a3583fbbacd126329d1a7ac4bca55a564928155979e938433b16be614e6896
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0fc8eb2b591ac775f91fa0b61e148b9b9de4a65715d6c4bbffcf8515df362370
[INFO] running `Command { std: "docker" "start" "-a" "0fc8eb2b591ac775f91fa0b61e148b9b9de4a65715d6c4bbffcf8515df362370", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling algorithms_fourth v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/search/sequential.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     let mut p = first;
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/search/red_black_search/trace.rs:40:11
[INFO] [stdout]    |
[INFO] [stdout] 40 |     node: &Node<K, V>,
[INFO] [stdout]    |           ^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 45 | ) -> Element<K, V> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 45 | ) -> Element<'_, K, V> {
[INFO] [stdout]    |              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/digraph/cycle.rs:75:18
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn cycle(&self) -> Iter<usize> {
[INFO] [stdout]    |                  ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn cycle(&self) -> Iter<'_, usize> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph/edge_weighted/mst/prim.rs:126:18
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn edges(&self) -> std::slice::Iter<&Edge> {
[INFO] [stdout]     |                  ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                  |         |                |
[INFO] [stdout]     |                  |         |                the same lifetime is elided here
[INFO] [stdout]     |                  |         the same lifetime is hidden here
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn edges(&self) -> std::slice::Iter<'_, &Edge> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.07s
[INFO] running `Command { std: "docker" "inspect" "0fc8eb2b591ac775f91fa0b61e148b9b9de4a65715d6c4bbffcf8515df362370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc8eb2b591ac775f91fa0b61e148b9b9de4a65715d6c4bbffcf8515df362370", kill_on_drop: false }`
[INFO] [stdout] 0fc8eb2b591ac775f91fa0b61e148b9b9de4a65715d6c4bbffcf8515df362370
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 617d2754afcd69570f47ee0325cc5cf670acaab97230d923247112a39caa6906
[INFO] running `Command { std: "docker" "start" "-a" "617d2754afcd69570f47ee0325cc5cf670acaab97230d923247112a39caa6906", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/search/sequential.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     let mut p = first;
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/search/red_black_search/trace.rs:40:11
[INFO] [stdout]    |
[INFO] [stdout] 40 |     node: &Node<K, V>,
[INFO] [stdout]    |           ^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 45 | ) -> Element<K, V> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 45 | ) -> Element<'_, K, V> {
[INFO] [stdout]    |              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/digraph/cycle.rs:75:18
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn cycle(&self) -> Iter<usize> {
[INFO] [stdout]    |                  ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn cycle(&self) -> Iter<'_, usize> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph/edge_weighted/mst/prim.rs:126:18
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn edges(&self) -> std::slice::Iter<&Edge> {
[INFO] [stdout]     |                  ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                  |         |                |
[INFO] [stdout]     |                  |         |                the same lifetime is elided here
[INFO] [stdout]     |                  |         the same lifetime is hidden here
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn edges(&self) -> std::slice::Iter<'_, &Edge> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling algorithms_fourth v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/search/sequential.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     let mut p = first;
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/search/red_black_search/trace.rs:40:11
[INFO] [stdout]    |
[INFO] [stdout] 40 |     node: &Node<K, V>,
[INFO] [stdout]    |           ^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 45 | ) -> Element<K, V> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 45 | ) -> Element<'_, K, V> {
[INFO] [stdout]    |              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/digraph/cycle.rs:75:18
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn cycle(&self) -> Iter<usize> {
[INFO] [stdout]    |                  ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn cycle(&self) -> Iter<'_, usize> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/graph/edge_weighted/mst/prim.rs:126:18
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn edges(&self) -> std::slice::Iter<&Edge> {
[INFO] [stdout]     |                  ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                  |         |                |
[INFO] [stdout]     |                  |         |                the same lifetime is elided here
[INFO] [stdout]     |                  |         the same lifetime is hidden here
[INFO] [stdout]     |                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn edges(&self) -> std::slice::Iter<'_, &Edge> {
[INFO] [stdout]     |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "617d2754afcd69570f47ee0325cc5cf670acaab97230d923247112a39caa6906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617d2754afcd69570f47ee0325cc5cf670acaab97230d923247112a39caa6906", kill_on_drop: false }`
[INFO] [stdout] 617d2754afcd69570f47ee0325cc5cf670acaab97230d923247112a39caa6906
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1aaa3d5e56a5abd33f3c894c5af546bcae54618c852a6c3d9e02ddd4625c82bc
[INFO] running `Command { std: "docker" "start" "-a" "1aaa3d5e56a5abd33f3c894c5af546bcae54618c852a6c3d9e02ddd4625c82bc", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/search/sequential.rs:58:25
[INFO] [stderr]    |
[INFO] [stderr] 58 |                     let mut p = first;
[INFO] [stderr]    |                         ----^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/search/red_black_search/trace.rs:40:11
[INFO] [stderr]    |
[INFO] [stderr] 40 |     node: &Node<K, V>,
[INFO] [stderr]    |           ^^^^^^^^^^^ the lifetime is elided here
[INFO] [stderr] ...
[INFO] [stderr] 45 | ) -> Element<K, V> {
[INFO] [stderr]    |      ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 45 | ) -> Element<'_, K, V> {
[INFO] [stderr]    |              +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/digraph/cycle.rs:75:18
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn cycle(&self) -> Iter<usize> {
[INFO] [stderr]    |                  ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn cycle(&self) -> Iter<'_, usize> {
[INFO] [stderr]    |                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/graph/edge_weighted/mst/prim.rs:126:18
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn edges(&self) -> std::slice::Iter<&Edge> {
[INFO] [stderr]     |                  ^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                  |         |                |
[INFO] [stderr]     |                  |         |                the same lifetime is elided here
[INFO] [stderr]     |                  |         the same lifetime is hidden here
[INFO] [stderr]     |                  the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn edges(&self) -> std::slice::Iter<'_, &Edge> {
[INFO] [stderr]     |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: `algorithms_fourth` (lib) generated 4 warnings (run `cargo fix --lib -p algorithms_fourth` to apply 4 suggestions)
[INFO] [stderr] warning: `algorithms_fourth` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/algorithms_fourth-349207a59bdc6b6b)
[INFO] [stdout] 
[INFO] [stdout] running 54 tests
[INFO] [stdout] test digraph::acyclic_sp::test::test ... ok
[INFO] [stdout] test digraph::connect::test::test ... ok
[INFO] [stdout] test digraph::bellman_for_sp::test::test ... ok
[INFO] [stdout] test digraph::cycle::test::test ... ok
[INFO] [stdout] test digraph::depth_first_order::test::test ... ok
[INFO] [stdout] test digraph::dijkstra_sp::test::test ... ok
[INFO] [stdout] test digraph::directed_dfs::test::test ... ok
[INFO] [stdout] test digraph::edge_weighted::test::test ... ok
[INFO] [stdout] test digraph::topological::test::test ... ok
[INFO] [stdout] test graph::breadth_first_search::test::test ... ok
[INFO] [stdout] test graph::connect::test::test_union_find ... ok
[INFO] [stdout] test graph::connect::test::test ... ok
[INFO] [stdout] test graph::cycle::test::test ... ok
[INFO] [stdout] test graph::depth_first_search::test::test ... ok
[INFO] [stdout] test graph::edge_weighted::mst::kruskal::test::test ... ok
[INFO] [stdout] test graph::edge_weighted::mst::prim::test::test ... ok
[INFO] [stdout] test graph::symbol_graph::test::test ... ok
[INFO] [stdout] test io::reader::test::test ... ok
[INFO] [stdout] test io::writer::test::test ... ok
[INFO] [stdout] test graph::edge_weighted::test::test ... ok
[INFO] [stdout] test search::binary_search::test::test_binary_search ... ok
[INFO] [stdout] test search::boyer_moore::test::test ... ok
[INFO] [stdout] test search::test::test_loop_trace_red_black_search ... ignored, 用于打印红黑树的变化流程，非功能性测试函数
[INFO] [stdout] test search::test::test_trace_red_black_search ... ignored, 用于打印红黑树的变化流程，非功能性测试函数
[INFO] [stdout] test search::rabin_karp::test::test ... ok
[INFO] [stdout] test sort::priority_queue::test::test_min_pq ... ok
[INFO] [stdout] test search::separate_chaining_hash::test::test ... ok
[INFO] [stdout] test search::sequential::test::test ... ok
[INFO] [stdout] test search::test::test_binary_search ... ok
[INFO] [stdout] test search::test::test_binary_tree_search ... ok
[INFO] [stdout] test search::kmp::test::test ... ok
[INFO] [stdout] test search::test::test_linear_probing_hash_search_st ... ok
[INFO] [stdout] test string::lsd::test::test ... ok
[INFO] [stdout] test string::huff_man::test::test ... ok
[INFO] [stdout] test string::quick3_string::test::test ... ok
[INFO] [stdout] test string::nfa::test::test ... ok
[INFO] [stdout] test string::msd::test::test ... ok
[INFO] [stdout] test string::lzw::test::test ... ok
[INFO] [stdout] test search::linear_probing_hash::test::test ... ok
[INFO] [stdout] test search::test::test_separate_chaining_hash_search_st ... ok
[INFO] [stdout] test search::test::test_sequential_search_st ... ok
[INFO] [stdout] test search::tst::test::test ... ok
[INFO] [stdout] test sort::priority_queue::test::test_max_pq ... ok
[INFO] [stdout] test sort::priority_queue::test::test_min_index_pq ... ok
[INFO] [stdout] test sort::priority_queue::test::test_max_index_pq ... ok
[INFO] [stdout] test search::trie::test::test ... ok
[INFO] [stdout] test tests::merge_sort ... ok
[INFO] [stdout] test search::test::test_red_black_search ... FAILED
[INFO] [stdout] test tests::quick_sort ... ok
[INFO] [stdout] test tests::quick_sort_for_three_direction ... ok
[INFO] [stdout] test tests::heap_sort ... ok
[INFO] [stdout] test tests::bubble_sort ... ok
[INFO] [stdout] test tests::shell_sort ... ok
[INFO] [stdout] test tests::insert_sort ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- search::test::test_red_black_search stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'search::test::test_red_black_search' (55) panicked at src/search/red_black_search.rs:376:22:
[INFO] [stdout] 此时目标节点一定在right子树中，所以right不为none
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x6106f18f83f2 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x6106f18f83f2 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x6106f18f83f2 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x6106f18f83f2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x6106f1909eaf - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x6106f1909eaf - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x6106f18c5961 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x6106f18c5961 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x6106f18d19c2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x6106f18d650f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x6106f18d63a1 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x6106f185e29e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x6106f185e29e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x6106f18d6bcf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x6106f18d6bcf - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x6106f18d6a2a - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x6106f18d1af9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x6106f18b9c8d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x6106f1911b00 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x6106f191108b - core::panicking::panic_display::hcfa7354086542024
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x6106f191108b - core::option::expect_failed::h31e37be81de5cd03
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/option.rs:2178:5
[INFO] [stdout]   21:     0x6106f17cf6a0 - core::option::Option<T>::expect::h6a64da1b14399091
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/option.rs:965:21
[INFO] [stdout]   22:     0x6106f17f3895 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::hda7b528a9b3cf071
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:376:22
[INFO] [stdout]   23:     0x6106f17f3bc0 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::hda7b528a9b3cf071
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:391:31
[INFO] [stdout]   24:     0x6106f17f3bc0 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::hda7b528a9b3cf071
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:391:31
[INFO] [stdout]   25:     0x6106f17f3bc0 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::hda7b528a9b3cf071
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:391:31
[INFO] [stdout]   26:     0x6106f17ef202 - <algorithms_fourth::search::red_black_search::RedBlackBST<K,V> as algorithms_fourth::search::ST<K,V>>::delete::h2ab79bfcb7e5f7cc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:493:21
[INFO] [stdout]   27:     0x6106f17f6ba8 - algorithms_fourth::search::ST::delete_max::h42423e4b8d59098e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:41:18
[INFO] [stdout]   28:     0x6106f17fbfc1 - algorithms_fourth::search::test::test_st::h8574ec73a35e8dda
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:171:12
[INFO] [stdout]   29:     0x6106f17faa96 - algorithms_fourth::search::test::test_red_black_search::h2b78f77a8426e9c9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:105:9
[INFO] [stdout]   30:     0x6106f17faab7 - algorithms_fourth::search::test::test_red_black_search::{{closure}}::h71be0299060bc13b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:103:31
[INFO] [stdout]   31:     0x6106f1826086 - core::ops::function::FnOnce::call_once::h3f3f16cdca528e30
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x6106f185e05b - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x6106f185e05b - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   34:     0x6106f1873cc5 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   35:     0x6106f1873cc5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x6106f1873cc5 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x6106f1873cc5 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x6106f1873cc5 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x6106f1873cc5 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   40:     0x6106f1873cc5 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   41:     0x6106f184a4b4 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   42:     0x6106f184a4b4 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   43:     0x6106f184dd7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   44:     0x6106f184dd7a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   45:     0x6106f184dd7a - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   46:     0x6106f184dd7a - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   47:     0x6106f184dd7a - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x6106f184dd7a - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   49:     0x6106f184dd7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x6106f18ccc5f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   51:     0x6106f18ccc5f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   52:     0x7dd8bccb0aa4 - <unknown>
[INFO] [stdout]   53:     0x7dd8bcd3da34 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     search::test::test_red_black_search
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 51 passed; 1 failed; 2 ignored; 0 measured; 0 filtered out; finished in 3.16s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "1aaa3d5e56a5abd33f3c894c5af546bcae54618c852a6c3d9e02ddd4625c82bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1aaa3d5e56a5abd33f3c894c5af546bcae54618c852a6c3d9e02ddd4625c82bc", kill_on_drop: false }`
[INFO] [stdout] 1aaa3d5e56a5abd33f3c894c5af546bcae54618c852a6c3d9e02ddd4625c82bc
