[INFO] fetching crate steiner-tree 0.0.1...
[INFO] documenting steiner-tree-0.0.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate steiner-tree 0.0.1 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate steiner-tree 0.0.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate steiner-tree 0.0.1
[INFO] finished tweaking crates.io crate steiner-tree 0.0.1
[INFO] tweaked toml for crates.io crate steiner-tree 0.0.1 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate crates.io crate steiner-tree 0.0.1 already has a lockfile, it will not be regenerated
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[INFO] [stdout] 718a93f0e1e6bb3e71949af8d1ca57dabab376ab8a0465ab2ed2da0eed0f8555
[INFO] running `Command { std: "docker" "start" "-a" "718a93f0e1e6bb3e71949af8d1ca57dabab376ab8a0465ab2ed2da0eed0f8555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "718a93f0e1e6bb3e71949af8d1ca57dabab376ab8a0465ab2ed2da0eed0f8555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718a93f0e1e6bb3e71949af8d1ca57dabab376ab8a0465ab2ed2da0eed0f8555", kill_on_drop: false }`
[INFO] [stdout] 718a93f0e1e6bb3e71949af8d1ca57dabab376ab8a0465ab2ed2da0eed0f8555
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3561889f4bc66651d88934e8e2ab91837ce7f4d475ee14a27bbd3ee596f61218
[INFO] running `Command { std: "docker" "start" "-a" "3561889f4bc66651d88934e8e2ab91837ce7f4d475ee14a27bbd3ee596f61218", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking steiner-tree v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting steiner-tree v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/gen_lut.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync`
[INFO] [stdout]  --> src/gen_lut.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::hanan_grid::HananGridWithCoords`
[INFO] [stdout]   --> src/lut.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use super::hanan_grid::HananGridWithCoords;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PrimInt`
[INFO] [stdout]   --> src/lut.rs:12:29
[INFO] [stdout]    |
[INFO] [stdout] 12 | use num_traits::{Num, Zero, PrimInt};
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/lut.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LUTReadError::*`
[INFO] [stdout]    --> src/serialization.rs:150:13
[INFO] [stdout]     |
[INFO] [stdout] 150 |         use LUTReadError::*;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LUTWriteError::*`
[INFO] [stdout]    --> src/serialization.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |         use LUTWriteError::*;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Num`
[INFO] [stdout]   --> src/travelling_salesperson.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 | use num_traits::{Num, Zero};
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hanan_grid::*`
[INFO] [stdout]   --> src/lib.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | use hanan_grid::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/net_breaking_medium_degree.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use itertools::Itertools;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/gen_lut.rs:510:19
[INFO] [stdout]     |
[INFO] [stdout] 510 |         .filter(|(i, count)| **count == 1)
[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: unused variable: `end_idx`
[INFO] [stdout]    --> src/gen_lut.rs:638:35
[INFO] [stdout]     |
[INFO] [stdout] 638 |                     .take_while(|(end_idx, end)| start_p.manhattan_distance(end) <= d)
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree_indices`
[INFO] [stdout]   --> src/serialization.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let tree_indices: HashMap<_, _> = trees.iter()
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_indices`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/tree.rs:252:13
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let a = edge.start();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/tree.rs:253:13
[INFO] [stdout]     |
[INFO] [stdout] 253 |         let b = edge.end();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/serialization.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 169 |             other => other.fmt(f)
[INFO] [stdout]     |                      ------------ recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pins.rs:146:27
[INFO] [stdout]     |
[INFO] [stdout] 146 |     pub fn move_to_origin(mut self) -> Self {
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_redirect`
[INFO] [stdout]    --> src/gen_lut.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 |     fn is_redirect(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `UInt`
[INFO] [stdout]   --> src/serialization.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | type UInt = u32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `SInt`
[INFO] [stdout]   --> src/serialization.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | type SInt = i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAGIC`
[INFO] [stdout]   --> src/serialization.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | const MAGIC: &[u8] = "fast-steiner lookup-table\r\n".as_bytes();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_point`
[INFO] [stdout]    --> src/serialization.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn read_point<R: Read>(reader: &mut R) -> Result<Point<HananCoord>, LUTReadError> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_byte`
[INFO] [stdout]    --> src/serialization.rs:115:4
[INFO] [stdout]     |
[INFO] [stdout] 115 | fn read_byte<R: Read>(reader: &mut R) -> Result<u8, LUTReadError> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_magic`
[INFO] [stdout]    --> src/serialization.rs:193:4
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn read_magic<R: Read>(reader: &mut R) -> Result<(), LUTReadError> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_magic`
[INFO] [stdout]    --> src/serialization.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn write_magic<W: Write>(writer: &mut W) -> Result<(), LUTWriteError> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_unsigned_integer`
[INFO] [stdout]    --> src/serialization.rs:220:4
[INFO] [stdout]     |
[INFO] [stdout] 220 | fn read_unsigned_integer<T, R: Read>(reader: &mut R) -> Result<T, LUTReadError>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_signed_integer`
[INFO] [stdout]    --> src/serialization.rs:304:4
[INFO] [stdout]     |
[INFO] [stdout] 304 | fn read_signed_integer<T, R: Read>(reader: &mut R) -> Result<T, LUTReadError>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_signed_integer`
[INFO] [stdout]    --> src/serialization.rs:340:4
[INFO] [stdout]     |
[INFO] [stdout] 340 | fn write_signed_integer<W: Write>(writer: &mut W, value: SInt) -> Result<(), LUTWriteError> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_edges`
[INFO] [stdout]    --> src/tree.rs:135:19
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub(crate) fn num_edges(&self) -> usize {
[INFO] [stdout]     |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_edge`
[INFO] [stdout]    --> src/tree.rs:219:12
[INFO] [stdout]     |
[INFO] [stdout] 219 |     pub fn add_edge(&mut self, edge: TreeEdge) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_edge`
[INFO] [stdout]    --> src/tree.rs:275:12
[INFO] [stdout]     |
[INFO] [stdout] 275 |     pub fn remove_edge(&mut self, edge: TreeEdge) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `into_non_canonical_form`
[INFO] [stdout]    --> src/tree.rs:311:12
[INFO] [stdout]     |
[INFO] [stdout] 311 |     pub fn into_non_canonical_form(self) -> Tree<NonCanonical> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_90ccw`
[INFO] [stdout]    --> src/tree.rs:325:12
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn rotate_90ccw(mut self) -> Tree<NonCanonical> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mirror_at_y_axis`
[INFO] [stdout]    --> src/tree.rs:333:12
[INFO] [stdout]     |
[INFO] [stdout] 333 |     pub fn mirror_at_y_axis(mut self) -> Tree<NonCanonical> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_vertical`
[INFO] [stdout]    --> src/tree.rs:489:12
[INFO] [stdout]     |
[INFO] [stdout] 489 |     pub fn is_vertical(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mirror_at_y_axis`
[INFO] [stdout]    --> src/tree.rs:518:8
[INFO] [stdout]     |
[INFO] [stdout] 518 |     fn mirror_at_y_axis(mut self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rotate_ccw90`
[INFO] [stdout]    --> src/tree.rs:531:8
[INFO] [stdout]     |
[INFO] [stdout] 531 |     fn rotate_ccw90(&self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_x`
[INFO] [stdout]   --> src/hanan_grid.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn num_x(&self) -> usize {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num_y`
[INFO] [stdout]   --> src/hanan_grid.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn num_y(&self) -> usize {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edge_weight_h`
[INFO] [stdout]   --> src/hanan_grid.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn edge_weight_h(&self, idx: usize) -> T {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edge_weight_v`
[INFO] [stdout]   --> src/hanan_grid.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn edge_weight_v(&self, idx: usize) -> T {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `boundary_points`
[INFO] [stdout]   --> src/hanan_grid.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn boundary_points(&self, boundary: Boundary) -> HananPartialBoundaryIterator {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/hanan_grid.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn new(grid: UnitHananGrid, boundary: Boundary) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_pins`
[INFO] [stdout]    --> src/compaction_expansion.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn current_pins(&self) -> &Pins<Canonical> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_points_noalloc`
[INFO] [stdout]   --> src/position_sequence.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn from_points_noalloc<T>(mut reuse: Self, points: &[Point<T>]) -> Self
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `position_sequence_no_alloc`
[INFO] [stdout]    --> src/position_sequence.rs:103:4
[INFO] [stdout]     |
[INFO] [stdout] 103 | fn position_sequence_no_alloc<T>(position_sequence: &mut [usize], points: &[Point<T>])
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edge_counts`
[INFO] [stdout]    --> src/wirelength_vector.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn edge_counts(&self) -> &[EdgeCountT] {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `difference`
[INFO] [stdout]    --> src/iterator_set_operations.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn difference<A, B, E>(a: A, b: B) -> SetOpIter<A::IntoIter, B::IntoIter, Difference>
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Tour`
[INFO] [stdout]   --> src/travelling_salesperson.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Tour<'a, T, DFn> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/travelling_salesperson.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn new(points: &'a [T], distance: &'a DFn) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_with_route`
[INFO] [stdout]   --> src/travelling_salesperson.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn new_with_route(points: &'a [T], route: Vec<usize>, distance: &'a DFn) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/travelling_salesperson.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn len(&self) -> usize { self.points.len() }
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_index`
[INFO] [stdout]   --> src/travelling_salesperson.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn next_index(&self, idx: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prev_index`
[INFO] [stdout]   --> src/travelling_salesperson.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn prev_index(&self, idx: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `element`
[INFO] [stdout]   --> src/travelling_salesperson.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn element(&self, index: usize) -> &T {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements`
[INFO] [stdout]   --> src/travelling_salesperson.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn elements(&self, idx1: usize, idx2: usize) -> (&T, &T) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edge_elements`
[INFO] [stdout]   --> src/travelling_salesperson.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn edge_elements(&self, edge_start_idx: usize) -> (&T, &T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `edge_length`
[INFO] [stdout]   --> src/travelling_salesperson.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn edge_length(&self, edge_start_idx: usize) -> D {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `total_length_nowrap`
[INFO] [stdout]   --> src/travelling_salesperson.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 |     fn total_length_nowrap(&self) -> D {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `length_of_adjacent_edges_nowrap`
[INFO] [stdout]    --> src/travelling_salesperson.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn length_of_adjacent_edges_nowrap(&self, idx: usize) -> D {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_tsp`
[INFO] [stdout]    --> src/travelling_salesperson.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn solve_tsp<T, DFn, D>(points: &[T], distance_fn: &DFn) -> Vec<usize>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_tsp_nearest_neighbour`
[INFO] [stdout]    --> src/travelling_salesperson.rs:221:4
[INFO] [stdout]     |
[INFO] [stdout] 221 | fn solve_tsp_nearest_neighbour<T, DFn, D>(points: &[T], distance_fn: &DFn) -> Vec<usize>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 62 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.68s
[INFO] running `Command { std: "docker" "inspect" "3561889f4bc66651d88934e8e2ab91837ce7f4d475ee14a27bbd3ee596f61218", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3561889f4bc66651d88934e8e2ab91837ce7f4d475ee14a27bbd3ee596f61218", kill_on_drop: false }`
[INFO] [stdout] 3561889f4bc66651d88934e8e2ab91837ce7f4d475ee14a27bbd3ee596f61218
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] bd978d1c60f6c24174591ebefc82e3c5461119ec611bc7b9a7ec43552f938ee5
[INFO] running `Command { std: "docker" "start" "-a" "bd978d1c60f6c24174591ebefc82e3c5461119ec611bc7b9a7ec43552f938ee5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]  Documenting steiner-tree v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.77s
[INFO] running `Command { std: "docker" "inspect" "bd978d1c60f6c24174591ebefc82e3c5461119ec611bc7b9a7ec43552f938ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd978d1c60f6c24174591ebefc82e3c5461119ec611bc7b9a7ec43552f938ee5", kill_on_drop: false }`
[INFO] [stdout] bd978d1c60f6c24174591ebefc82e3c5461119ec611bc7b9a7ec43552f938ee5