[INFO] updating cached repository https://github.com/timgluz/teeline
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/timgluz/teeline
[INFO] [stderr]    2ba91ed..93c2a35  master     -> master
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93c2a35cc2c0f1e20d5b01d0d8be736cbc900e3f
[INFO] testing timgluz/teeline against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimgluz%2Fteeline" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/timgluz/teeline on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/timgluz/teeline
[INFO] finished tweaking git repo https://github.com/timgluz/teeline
[INFO] tweaked toml for git repo https://github.com/timgluz/teeline written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/timgluz/teeline already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c34f4bae9bd75866ce7493238d4ab46a1cb7310d1261467fe72d4c8162be62dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c34f4bae9bd75866ce7493238d4ab46a1cb7310d1261467fe72d4c8162be62dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c34f4bae9bd75866ce7493238d4ab46a1cb7310d1261467fe72d4c8162be62dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c34f4bae9bd75866ce7493238d4ab46a1cb7310d1261467fe72d4c8162be62dc", kill_on_drop: false }`
[INFO] [stdout] c34f4bae9bd75866ce7493238d4ab46a1cb7310d1261467fe72d4c8162be62dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a7b696e099bc7de50ad9fbb8624a3cb5d8c82fc8884076599b7c491286311910
[INFO] running `Command { std: "docker" "start" "-a" "a7b696e099bc7de50ad9fbb8624a3cb5d8c82fc8884076599b7c491286311910", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling teeline v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/tsp/genetic_algorithm.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     for i in 0..gene_len {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assert_approx`
[INFO] [stdout]  --> src/test/helpers.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn assert_approx(expected_val: f32, actual_val: f32) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]    --> src/tsp/kdtree.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn add(&mut self, new_point: KDPoint) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_rec`
[INFO] [stdout]    --> src/tsp/kdtree.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn add_rec(&mut self, parent: KDSubTree, new_point: KDPoint, depth: usize) -> KDSubTree {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `point`
[INFO] [stdout]    --> src/tsp/kdtree.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 |     fn point(&self) -> &KDPoint {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp`
[INFO] [stdout]    --> src/tsp/kdtree.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn cmp(&self, other: &KDNode) -> Option<Ordering> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.37s
[INFO] running `Command { std: "docker" "inspect" "a7b696e099bc7de50ad9fbb8624a3cb5d8c82fc8884076599b7c491286311910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b696e099bc7de50ad9fbb8624a3cb5d8c82fc8884076599b7c491286311910", kill_on_drop: false }`
[INFO] [stdout] a7b696e099bc7de50ad9fbb8624a3cb5d8c82fc8884076599b7c491286311910
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dacc08f11c12c3eb7378ba43c94d6834c6a6826cbdcbfcb51713af38f1884029
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dacc08f11c12c3eb7378ba43c94d6834c6a6826cbdcbfcb51713af38f1884029", kill_on_drop: false }`
[INFO] [stderr]    Compiling teeline v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/tsp/genetic_algorithm.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     for i in 0..gene_len {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `assert_approx`
[INFO] [stdout]  --> src/test/helpers.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn assert_approx(expected_val: f32, actual_val: f32) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]    --> src/tsp/kdtree.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn add(&mut self, new_point: KDPoint) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_rec`
[INFO] [stdout]    --> src/tsp/kdtree.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn add_rec(&mut self, parent: KDSubTree, new_point: KDPoint, depth: usize) -> KDSubTree {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `point`
[INFO] [stdout]    --> src/tsp/kdtree.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 |     fn point(&self) -> &KDPoint {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp`
[INFO] [stdout]    --> src/tsp/kdtree.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn cmp(&self, other: &KDNode) -> Option<Ordering> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Debug`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::Debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/tsp/genetic_algorithm.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     for i in 0..gene_len {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `point`
[INFO] [stdout]    --> src/tsp/kdtree.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 |     fn point(&self) -> &KDPoint {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cmp`
[INFO] [stdout]    --> src/tsp/kdtree.rs:278:8
[INFO] [stdout]     |
[INFO] [stdout] 278 |     fn cmp(&self, other: &KDNode) -> Option<Ordering> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.34s
[INFO] running `Command { std: "docker" "inspect" "dacc08f11c12c3eb7378ba43c94d6834c6a6826cbdcbfcb51713af38f1884029", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dacc08f11c12c3eb7378ba43c94d6834c6a6826cbdcbfcb51713af38f1884029", kill_on_drop: false }`
[INFO] [stdout] dacc08f11c12c3eb7378ba43c94d6834c6a6826cbdcbfcb51713af38f1884029
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f9984dff364de1c5ab6a85bd59528b7b130b9ac9afca65f657d794ca332c1cc3
[INFO] running `Command { std: "docker" "start" "-a" "f9984dff364de1c5ab6a85bd59528b7b130b9ac9afca65f657d794ca332c1cc3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/tsp/genetic_algorithm.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |     for i in 0..gene_len {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/tsp/genetic_algorithm.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |     for i in 0..gene_len {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `point`
[INFO] [stderr]    --> src/tsp/kdtree.rs:274:8
[INFO] [stderr]     |
[INFO] [stderr] 274 |     fn point(&self) -> &KDPoint {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_approx`
[INFO] [stderr]  --> src/test/helpers.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn assert_approx(expected_val: f32, actual_val: f32) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cmp`
[INFO] [stderr]    --> src/tsp/kdtree.rs:278:8
[INFO] [stderr]     |
[INFO] [stderr] 278 |     fn cmp(&self, other: &KDNode) -> Option<Ordering> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]    --> src/tsp/kdtree.rs:110:8
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn add(&mut self, new_point: KDPoint) {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_rec`
[INFO] [stderr]    --> src/tsp/kdtree.rs:120:8
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn add_rec(&mut self, parent: KDSubTree, new_point: KDPoint, depth: usize) -> KDSubTree {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `point`
[INFO] [stderr]    --> src/tsp/kdtree.rs:274:8
[INFO] [stderr]     |
[INFO] [stderr] 274 |     fn point(&self) -> &KDPoint {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `cmp`
[INFO] [stderr]    --> src/tsp/kdtree.rs:278:8
[INFO] [stderr]     |
[INFO] [stderr] 278 |     fn cmp(&self, other: &KDNode) -> Option<Ordering> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Debug`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::fmt::Debug;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/teeline-28ae089995e1e3bb
[INFO] [stdout] 
[INFO] [stdout] running 52 tests
[INFO] [stdout] test tsp::distance_matrix::tests::test_build_distance_matrix_from_empty_list ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_build_distance_matrix_from_singleton_list ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_distance_matrix_distances_from_city1 ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_distance_matrix_distance_between_with_3_cities_example ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_distance_matrix_distance_between_with_4_cities_example ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_distance_from_origin_to_origin ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_distance_from_origin_to_x_axis ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_distance_matrix_tour_length_with_tsp_5_1 ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_cmp_by_coord_with_pt_equal ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_cmp_by_coord_with_pt_greater_than ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_build_distance_matrix_from_2_item_list ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_build_distance_matrix_from_3_item_list ... ok
[INFO] [stdout] test tsp::kdtree::tests::from_cities_example ... ok
[INFO] [stdout] test tsp::distance_matrix::tests::test_nearest_for_tsp_5_1 ... ok
[INFO] [stdout] test tsp::genetic_algorithm::tests::test_ordered_crossover_genes_with_example_from_article ... ok
[INFO] [stdout] test tsp::genetic_algorithm::tests::test_ordered_crossover_genes_with_example_from_book ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_add_new_node_to_empty_tree ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_walk_balances_1level_tree ... ok
[INFO] [stdout] test tsp::kdtree::tests::partition_points_with_2points_with_left_subtree ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_add_new_node_to_tree_with_root ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_nearest_for_tsp_5_1 ... ok
[INFO] [stdout] test tsp::kdtree::tests::partition_points_single_elem ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_cmp_by_coord_when_other_node_has_different_dim ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_cmp_by_coord_with_empty_points ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_distance_from_origin_to_y_axis ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_eq_with_same_values ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_walk_with_empty_tree ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_distance_on_diagonal ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdpoint_cmp_by_coord_with_pt_less_than ... ok
[INFO] [stdout] test tsp::kdtree::tests::partition_points_with_2points_with_full_tree ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_nearest_with_points_around_node4 ... ok
[INFO] [stdout] test tsp::route::tests::test_route_from_cities_with_2_elem ... ok
[INFO] [stdout] test tsp::tests::test_total_distance_for_tsp_5_1 ... ok
[INFO] [stdout] test tsp::kdtree::tests::kdtree_walk_with_only_root_node ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_coords_from_text_3dim_coord ... ok
[INFO] [stdout] test tsp::kdtree::tests::partition_points_with_3points_by_second_dimension ... ok
[INFO] [stdout] test tsp::route::tests::test_route_from_cities_with_1_elem ... ok
[INFO] [stdout] test tsp::route::tests::test_route_random_successor_returns_new_route ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_coords_from_text_include_negative_coord ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_coords_from_text_only_ints ... ok
[INFO] [stdout] test tsp::kdtree::tests::partition_points_with_2points_with_right_subtree ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_process_lines_with_empty_string ... ok
[INFO] [stdout] test tsp::two_opt::tests::test_solve_with_tsp5_example ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_next_state_with_end_marker ... ok
[INFO] [stdout] test tsp::two_opt::tests::test_swap_2opt_2middle_elems_in_even_size_list ... ok
[INFO] [stdout] test tsp::two_opt::tests::test_swap_2opt_single_middle_elem_does_nothing ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_is_state_marker_with_empty_string ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_is_state_marker_with_metadata ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_state_from_coord_section_switches_to_outsection ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_is_state_marker_with_state_key ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_next_state_with_beginning_of_coord_section ... ok
[INFO] [stdout] test tsp::tsplib::tests::test_process_lines_happy_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 52 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bin-74b3f2d0552afd25
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_kdtree_and_distance_matrix-9b6dc5e34a080b12
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_kdtree_vs_distance_matrix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests teeline
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f9984dff364de1c5ab6a85bd59528b7b130b9ac9afca65f657d794ca332c1cc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9984dff364de1c5ab6a85bd59528b7b130b9ac9afca65f657d794ca332c1cc3", kill_on_drop: false }`
[INFO] [stdout] f9984dff364de1c5ab6a85bd59528b7b130b9ac9afca65f657d794ca332c1cc3