[INFO] fetching crate algorithms_fourth 0.1.10...
[INFO] testing algorithms_fourth-0.1.10 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate algorithms_fourth 0.1.10 into /workspace/builds/worker-7-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-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate algorithms_fourth 0.1.10 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "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-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3aa756c7da6c872306af4df77616a36c34efe2a9f336406116271e7816b3956
[INFO] running `Command { std: "docker" "start" "-a" "f3aa756c7da6c872306af4df77616a36c34efe2a9f336406116271e7816b3956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3aa756c7da6c872306af4df77616a36c34efe2a9f336406116271e7816b3956", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3aa756c7da6c872306af4df77616a36c34efe2a9f336406116271e7816b3956", kill_on_drop: false }`
[INFO] [stdout] f3aa756c7da6c872306af4df77616a36c34efe2a9f336406116271e7816b3956
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1c9af69640f28e9f7e95d6a3d8729a584262e2a81a4205defb6b666c8be16b4
[INFO] running `Command { std: "docker" "start" "-a" "a1c9af69640f28e9f7e95d6a3d8729a584262e2a81a4205defb6b666c8be16b4", 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 5.94s
[INFO] running `Command { std: "docker" "inspect" "a1c9af69640f28e9f7e95d6a3d8729a584262e2a81a4205defb6b666c8be16b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1c9af69640f28e9f7e95d6a3d8729a584262e2a81a4205defb6b666c8be16b4", kill_on_drop: false }`
[INFO] [stdout] a1c9af69640f28e9f7e95d6a3d8729a584262e2a81a4205defb6b666c8be16b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cc4984a1b9c1d3204d0f10bbe41210f537cded96138ab622f40bdabe011c89c
[INFO] running `Command { std: "docker" "start" "-a" "8cc4984a1b9c1d3204d0f10bbe41210f537cded96138ab622f40bdabe011c89c", kill_on_drop: false }`
[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] [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 2.82s
[INFO] running `Command { std: "docker" "inspect" "8cc4984a1b9c1d3204d0f10bbe41210f537cded96138ab622f40bdabe011c89c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cc4984a1b9c1d3204d0f10bbe41210f537cded96138ab622f40bdabe011c89c", kill_on_drop: false }`
[INFO] [stdout] 8cc4984a1b9c1d3204d0f10bbe41210f537cded96138ab622f40bdabe011c89c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cefa7cbe859203829e3701a7bbf073ae1c9649d516ace99c9d0673148d2c40de
[INFO] running `Command { std: "docker" "start" "-a" "cefa7cbe859203829e3701a7bbf073ae1c9649d516ace99c9d0673148d2c40de", 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] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] running 54 tests
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/algorithms_fourth-7b97cdb5bec9427d)
[INFO] [stdout] test digraph::cycle::test::test ... ok
[INFO] [stdout] test digraph::acyclic_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::bellman_for_sp::test::test ... ok
[INFO] [stdout] test digraph::connect::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::topological::test::test ... ok
[INFO] [stdout] test graph::breadth_first_search::test::test ... ok
[INFO] [stdout] test graph::edge_weighted::mst::prim::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 search::binary_search::test::test_binary_search ... ok
[INFO] [stdout] test io::reader::test::test ... ok
[INFO] [stdout] test io::writer::test::test ... ok
[INFO] [stdout] test search::boyer_moore::test::test ... ok
[INFO] [stdout] test search::kmp::test::test ... ok
[INFO] [stdout] test graph::connect::test::test ... ok
[INFO] [stdout] test graph::edge_weighted::test::test ... ok
[INFO] [stdout] test graph::symbol_graph::test::test ... ok
[INFO] [stdout] test search::test::test_binary_tree_search ... ok
[INFO] [stdout] test search::test::test_linear_probing_hash_search_st ... ok
[INFO] [stdout] test search::rabin_karp::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::linear_probing_hash::test::test ... ok
[INFO] [stdout] test graph::connect::test::test_union_find ... ok
[INFO] [stdout] test graph::cycle::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_separate_chaining_hash_search_st ... ok
[INFO] [stdout] test search::separate_chaining_hash::test::test ... ok
[INFO] [stdout] test search::test::test_sequential_search_st ... ok
[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::tst::test::test ... ok
[INFO] [stdout] test sort::priority_queue::test::test_max_index_pq ... ok
[INFO] [stdout] test sort::priority_queue::test::test_max_pq ... ok
[INFO] [stdout] test string::lsd::test::test ... ok
[INFO] [stdout] test string::nfa::test::test ... ok
[INFO] [stdout] test string::quick3_string::test::test ... ok
[INFO] [stdout] test string::msd::test::test ... ok
[INFO] [stdout] test string::huff_man::test::test ... ok
[INFO] [stdout] test sort::priority_queue::test::test_min_pq ... ok
[INFO] [stdout] test string::lzw::test::test ... ok
[INFO] [stdout] test sort::priority_queue::test::test_min_index_pq ... ok
[INFO] [stdout] test search::trie::test::test ... ok
[INFO] [stdout] test tests::merge_sort ... ok
[INFO] [stdout] test tests::quick_sort ... ok
[INFO] [stdout] test tests::heap_sort ... ok
[INFO] [stdout] test search::test::test_red_black_search ... FAILED
[INFO] [stdout] test tests::quick_sort_for_three_direction ... 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' (47) 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:     0x62fe785eb962 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x62fe785eb962 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x62fe785eb962 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x62fe785eb962 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x62fe785fd2aa - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x62fe785fd2aa - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x62fe785ba8e6 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x62fe785ba8e6 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x62fe785cae49 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x62fe785cae49 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x62fe785cace1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x62fe7855751e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x62fe7855751e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x62fe785cb0c2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x62fe785cb0c2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x62fe785caf08 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x62fe785c6499 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x62fe785af33d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x62fe7860483c - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x62fe78603fe4 - core::panicking::panic_display::hbebf6cc789812465
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x62fe78603fe4 - core::option::expect_failed::hbc49c7a48e42a29b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/option.rs:2208:5
[INFO] [stdout]   21:     0x62fe78530e40 - core::option::Option<T>::expect::he9d8965b478a1e16
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/option.rs:971:21
[INFO] [stdout]   22:     0x62fe784cdd25 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::h177e519c17eb0718
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:376:22
[INFO] [stdout]   23:     0x62fe784ce050 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::h177e519c17eb0718
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:391:31
[INFO] [stdout]   24:     0x62fe784ce050 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::h177e519c17eb0718
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:391:31
[INFO] [stdout]   25:     0x62fe784ce050 - algorithms_fourth::search::red_black_search::RedBlackBST<K,V>::delete_for::h177e519c17eb0718
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:391:31
[INFO] [stdout]   26:     0x62fe784cb3a2 - <algorithms_fourth::search::red_black_search::RedBlackBST<K,V> as algorithms_fourth::search::ST<K,V>>::delete::h62099ad1d8480967
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search/red_black_search.rs:493:21
[INFO] [stdout]   27:     0x62fe784d3058 - algorithms_fourth::search::ST::delete_max::h58b5b08069bd4a4e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:41:18
[INFO] [stdout]   28:     0x62fe78527eb7 - algorithms_fourth::search::test::test_st::h49cc9da040f25464
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:171:12
[INFO] [stdout]   29:     0x62fe78526a06 - algorithms_fourth::search::test::test_red_black_search::h72887719d5f651e4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:105:9
[INFO] [stdout]   30:     0x62fe78526a27 - algorithms_fourth::search::test::test_red_black_search::{{closure}}::hb24417fc75f3936d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/search.rs:103:31
[INFO] [stdout]   31:     0x62fe784f8ad6 - core::ops::function::FnOnce::call_once::h506f7b4c374b677a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x62fe7855731b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x62fe7855731b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   34:     0x62fe7856acea - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   35:     0x62fe7856acea - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x62fe7856acea - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   37:     0x62fe7856acea - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   38:     0x62fe7856acea - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x62fe7856acea - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   40:     0x62fe7856acea - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   41:     0x62fe78545144 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   42:     0x62fe78545144 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x62fe78548a02 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   44:     0x62fe78548a02 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   45:     0x62fe78548a02 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   46:     0x62fe78548a02 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   47:     0x62fe78548a02 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x62fe78548a02 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   49:     0x62fe78548a02 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x62fe785c172f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   51:     0x62fe785c172f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x708515ac4aa4 - <unknown>
[INFO] [stdout]   53:     0x708515b51a64 - 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 5.06s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "cefa7cbe859203829e3701a7bbf073ae1c9649d516ace99c9d0673148d2c40de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cefa7cbe859203829e3701a7bbf073ae1c9649d516ace99c9d0673148d2c40de", kill_on_drop: false }`
[INFO] [stdout] cefa7cbe859203829e3701a7bbf073ae1c9649d516ace99c9d0673148d2c40de
