[INFO] crate kodama 0.2.2 is already in cache
[INFO] extracting crate kodama 0.2.2 into work/ex/clippy-test-run/sources/stable/reg/kodama/0.2.2
[INFO] extracting crate kodama 0.2.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/kodama/0.2.2
[INFO] validating manifest of kodama-0.2.2 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kodama-0.2.2 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kodama-0.2.2
[INFO] finished frobbing kodama-0.2.2
[INFO] frobbed toml for kodama-0.2.2 written to work/ex/clippy-test-run/sources/stable/reg/kodama/0.2.2/Cargo.toml
[INFO] started frobbing kodama-0.2.2
[INFO] finished frobbing kodama-0.2.2
[INFO] frobbed toml for kodama-0.2.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/kodama/0.2.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting kodama-0.2.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/kodama/0.2.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a4618d8f1eefd295f477299a900691d21ad0f38eef3b9e7201ae961769a6cc2c
[INFO] running `"docker" "start" "-a" "a4618d8f1eefd295f477299a900691d21ad0f38eef3b9e7201ae961769a6cc2c"`
[INFO] [stderr]     Checking kodama v0.2.2 (/opt/crater/workdir)
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/active.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |             end: end,
[INFO] [stderr]     |             ^^^^^^^^ help: replace it with: `end`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/condensed.rs:52:31
[INFO] [stderr]    |
[INFO] [stderr] 52 |             CondensedMatrix { data: data, observations: 0 }
[INFO] [stderr]    |                               ^^^^^^^^^^ help: replace it with: `data`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/condensed.rs:56:31
[INFO] [stderr]    |
[INFO] [stderr] 56 |             CondensedMatrix { data: data, observations: observations }
[INFO] [stderr]    |                               ^^^^^^^^^^ help: replace it with: `data`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/condensed.rs:56:43
[INFO] [stderr]    |
[INFO] [stderr] 56 |             CondensedMatrix { data: data, observations: observations }
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `observations`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/dendrogram.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |             observations: observations,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `observations`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             cluster1: cluster1,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `cluster1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             cluster2: cluster2,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `cluster2`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |             dissimilarity: dissimilarity,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `dissimilarity`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |             size: size,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `size`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]    --> src/primitive.rs:163:19
[INFO] [stderr]     |
[INFO] [stderr] 163 |             match active.range(row..).skip(1).next() {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::iter_skip_next)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/union.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         self.next_parent = self.next_parent + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.next_parent += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:438:25
[INFO] [stderr]     |
[INFO] [stderr] 438 |     fn requires_sorting(&self) -> bool {
[INFO] [stderr]     |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:447:25
[INFO] [stderr]     |
[INFO] [stderr] 447 |     fn square<T: Float>(&self, condensed_matrix: &mut [T]) {
[INFO] [stderr]     |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:457:23
[INFO] [stderr]     |
[INFO] [stderr] 457 |     fn sqrt<T: Float>(&self, dend: &mut Dendrogram<T>) {
[INFO] [stderr]     |                       ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:467:19
[INFO] [stderr]     |
[INFO] [stderr] 467 |     fn on_squares(&self) -> bool {
[INFO] [stderr]     |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:531:25
[INFO] [stderr]     |
[INFO] [stderr] 531 |     fn square<T: Float>(&self, condensed_matrix: &mut [T]) {
[INFO] [stderr]     |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:537:23
[INFO] [stderr]     |
[INFO] [stderr] 537 |     fn sqrt<T: Float>(&self, dend: &mut Dendrogram<T>) {
[INFO] [stderr]     |                       ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/lib.rs:720:9
[INFO] [stderr]     |
[INFO] [stderr] 720 |         self.sizes[cluster2] = self.sizes[cluster1] + self.sizes[cluster2];
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.sizes[cluster2] += self.sizes[cluster1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/active.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |             end: end,
[INFO] [stderr]     |             ^^^^^^^^ help: replace it with: `end`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/condensed.rs:52:31
[INFO] [stderr]    |
[INFO] [stderr] 52 |             CondensedMatrix { data: data, observations: 0 }
[INFO] [stderr]    |                               ^^^^^^^^^^ help: replace it with: `data`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/condensed.rs:56:31
[INFO] [stderr]    |
[INFO] [stderr] 56 |             CondensedMatrix { data: data, observations: observations }
[INFO] [stderr]    |                               ^^^^^^^^^^ help: replace it with: `data`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/condensed.rs:56:43
[INFO] [stderr]    |
[INFO] [stderr] 56 |             CondensedMatrix { data: data, observations: observations }
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `observations`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/dendrogram.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |             observations: observations,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `observations`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |             cluster1: cluster1,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `cluster1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |             cluster2: cluster2,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `cluster2`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |             dissimilarity: dissimilarity,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `dissimilarity`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/dendrogram.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |             size: size,
[INFO] [stderr]     |             ^^^^^^^^^^ help: replace it with: `size`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] error: couldn't read benches/../data/locations/ma-bench-small.dist: No such file or directory (os error 2)
[INFO] [stderr]   --> benches/bench.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |             include_bytes!("../data/locations/ma-bench-small.dist");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: couldn't read benches/../data/locations/ma-bench-large.dist: No such file or directory (os error 2)
[INFO] [stderr]   --> benches/bench.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |             include_bytes!("../data/locations/ma-bench-large.dist");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `kodama`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/chain.rs:246:54
[INFO] [stderr]     |
[INFO] [stderr] 246 |             dend_prim.eq_with_epsilon(&dend_nnchain, 0.0000000001)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/chain.rs:254:54
[INFO] [stderr]     |
[INFO] [stderr] 254 |             dend_prim.eq_with_epsilon(&dend_nnchain, 0.0000000001)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/chain.rs:262:54
[INFO] [stderr]     |
[INFO] [stderr] 262 |             dend_prim.eq_with_epsilon(&dend_nnchain, 0.0000000001)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/generic.rs:398:54
[INFO] [stderr]     |
[INFO] [stderr] 398 |             dend_prim.eq_with_epsilon(&dend_generic, 0.0000000001)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/generic.rs:406:54
[INFO] [stderr]     |
[INFO] [stderr] 406 |             dend_prim.eq_with_epsilon(&dend_generic, 0.0000000001)
[INFO] [stderr]     |                                                      ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/generic.rs:430:57
[INFO] [stderr]     |
[INFO] [stderr] 430 |             dend_nnchain.eq_with_epsilon(&dend_generic, 0.0000000001)
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/generic.rs:438:57
[INFO] [stderr]     |
[INFO] [stderr] 438 |             dend_nnchain.eq_with_epsilon(&dend_generic, 0.0000000001)
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/generic.rs:446:57
[INFO] [stderr]     |
[INFO] [stderr] 446 |             dend_nnchain.eq_with_epsilon(&dend_generic, 0.0000000001)
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^ help: consider: `0.000_000_000_1`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 55
[INFO] [stderr]    --> src/active.rs:250:5
[INFO] [stderr]     |
[INFO] [stderr] 250 | /     fn iter_range() {
[INFO] [stderr] 251 | |         let mut a = Active::with_len(5);
[INFO] [stderr] 252 | |         assert_eq!(items_range(&a, 0..5), vec![0, 1, 2, 3, 4]);
[INFO] [stderr] 253 | |         assert_eq!(items_range(&a, 0..1), vec![0]);
[INFO] [stderr] ...   |
[INFO] [stderr] 315 | |         assert_eq!(items_range(&a, 5..5), vec![]);
[INFO] [stderr] 316 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]    --> src/primitive.rs:163:19
[INFO] [stderr]     |
[INFO] [stderr] 163 |             match active.range(row..).skip(1).next() {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::iter_skip_next)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `xs`.
[INFO] [stderr]   --> src/test.rs:96:14
[INFO] [stderr]    |
[INFO] [stderr] 96 |     for i in 0..xs.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 96 |     for <item> in &mut xs {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/union.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         self.next_parent = self.next_parent + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.next_parent += 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 30
[INFO] [stderr]    --> src/union.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 | /     fn find_with_unions() {
[INFO] [stderr] 161 | |         let mut set = LinkageUnionFind::with_len(5);
[INFO] [stderr] 162 | |
[INFO] [stderr] 163 | |         set.union(1, 3);
[INFO] [stderr] ...   |
[INFO] [stderr] 198 | |         assert_eq!(8, set.find(7));
[INFO] [stderr] 199 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:438:25
[INFO] [stderr]     |
[INFO] [stderr] 438 |     fn requires_sorting(&self) -> bool {
[INFO] [stderr]     |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:447:25
[INFO] [stderr]     |
[INFO] [stderr] 447 |     fn square<T: Float>(&self, condensed_matrix: &mut [T]) {
[INFO] [stderr]     |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:457:23
[INFO] [stderr]     |
[INFO] [stderr] 457 |     fn sqrt<T: Float>(&self, dend: &mut Dendrogram<T>) {
[INFO] [stderr]     |                       ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:467:19
[INFO] [stderr]     |
[INFO] [stderr] 467 |     fn on_squares(&self) -> bool {
[INFO] [stderr]     |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:531:25
[INFO] [stderr]     |
[INFO] [stderr] 531 |     fn square<T: Float>(&self, condensed_matrix: &mut [T]) {
[INFO] [stderr]     |                         ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/lib.rs:537:23
[INFO] [stderr]     |
[INFO] [stderr] 537 |     fn sqrt<T: Float>(&self, dend: &mut Dendrogram<T>) {
[INFO] [stderr]     |                       ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/lib.rs:720:9
[INFO] [stderr]     |
[INFO] [stderr] 720 |         self.sizes[cluster2] = self.sizes[cluster1] + self.sizes[cluster2];
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.sizes[cluster2] += self.sizes[cluster1]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a4618d8f1eefd295f477299a900691d21ad0f38eef3b9e7201ae961769a6cc2c"`
[INFO] running `"docker" "rm" "-f" "a4618d8f1eefd295f477299a900691d21ad0f38eef3b9e7201ae961769a6cc2c"`
[INFO] [stdout] a4618d8f1eefd295f477299a900691d21ad0f38eef3b9e7201ae961769a6cc2c