[INFO] cloning repository https://github.com/fantasyfanwuren/Matrxi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fantasyfanwuren/Matrxi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffantasyfanwuren%2FMatrxi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffantasyfanwuren%2FMatrxi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b47387a36da6eaabe7aa2a94fe485c4dafceec2e
[INFO] linting fantasyfanwuren/Matrxi against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffantasyfanwuren%2FMatrxi" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fantasyfanwuren/Matrxi
[INFO] finished tweaking git repo https://github.com/fantasyfanwuren/Matrxi
[INFO] tweaked toml for git repo https://github.com/fantasyfanwuren/Matrxi written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fantasyfanwuren/Matrxi on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fantasyfanwuren/Matrxi 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1596cac16aad183b14a7abd90d0b47e34aba1bee8a71355017dcc96d464216eb
[INFO] running `Command { std: "docker" "start" "-a" "1596cac16aad183b14a7abd90d0b47e34aba1bee8a71355017dcc96d464216eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1596cac16aad183b14a7abd90d0b47e34aba1bee8a71355017dcc96d464216eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1596cac16aad183b14a7abd90d0b47e34aba1bee8a71355017dcc96d464216eb", kill_on_drop: false }`
[INFO] [stdout] 1596cac16aad183b14a7abd90d0b47e34aba1bee8a71355017dcc96d464216eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7daa52dd8f552779df22d23e24e44865972a2e95deddbe4d518e998b8f4e1f74
[INFO] running `Command { std: "docker" "start" "-a" "7daa52dd8f552779df22d23e24e44865972a2e95deddbe4d518e998b8f4e1f74", kill_on_drop: false }`
[INFO] [stderr]     Checking matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: empty line after doc comment
[INFO] [stdout]    --> src/mt/mod.rs:387:5
[INFO] [stdout]     |
[INFO] [stdout] 387 | /     /**多线程运算矩阵与数字相乘 */
[INFO] [stdout] 388 | |
[INFO] [stdout]     | |_^
[INFO] [stdout] 389 |       pub fn thread_mul_num<B>(self, num: B) -> Matrix
[INFO] [stdout]     |       --------------------- the comment documents this function
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]     = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
[INFO] [stdout]     = help: if the empty line is unintentional, remove it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty line after doc comment
[INFO] [stdout]    --> src/mt/mod.rs:458:5
[INFO] [stdout]     |
[INFO] [stdout] 458 | /     /**#### 计算出矩阵的解,返回值为一个Option<Solution>若解不存在,则返回None,若解存在则返回 Solution */
[INFO] [stdout] ...   |
[INFO] [stdout] 468 | |
[INFO] [stdout]     | |_^
[INFO] [stdout] ...
[INFO] [stdout] 471 |       fn get_pivot(&mut self, position: &Position) -> Option<Position> {
[INFO] [stdout]     |       ------------ the comment documents this function
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]     = help: if the empty line is unintentional, remove it
[INFO] [stdout] help: if the doc comment should not document function `get_pivot` then comment it out
[INFO] [stdout]     |
[INFO] [stdout] 458 -     /**#### 计算出矩阵的解,返回值为一个Option<Solution>若解不存在,则返回None,若解存在则返回 Solution */
[INFO] [stdout] 458 +     /*#### 计算出矩阵的解,返回值为一个Option<Solution>若解不存在,则返回None,若解存在则返回 Solution */
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty line after doc comment
[INFO] [stdout]    --> src/mt/mod.rs:387:5
[INFO] [stdout]     |
[INFO] [stdout] 387 | /     /**多线程运算矩阵与数字相乘 */
[INFO] [stdout] 388 | |
[INFO] [stdout]     | |_^
[INFO] [stdout] 389 |       pub fn thread_mul_num<B>(self, num: B) -> Matrix
[INFO] [stdout]     |       --------------------- the comment documents this function
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]     = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
[INFO] [stdout]     = help: if the empty line is unintentional, remove it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty line after doc comment
[INFO] [stdout]    --> src/mt/mod.rs:458:5
[INFO] [stdout]     |
[INFO] [stdout] 458 | /     /**#### 计算出矩阵的解,返回值为一个Option<Solution>若解不存在,则返回None,若解存在则返回 Solution */
[INFO] [stdout] ...   |
[INFO] [stdout] 468 | |
[INFO] [stdout]     | |_^
[INFO] [stdout] ...
[INFO] [stdout] 471 |       fn get_pivot(&mut self, position: &Position) -> Option<Position> {
[INFO] [stdout]     |       ------------ the comment documents this function
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]     = help: if the empty line is unintentional, remove it
[INFO] [stdout] help: if the doc comment should not document function `get_pivot` then comment it out
[INFO] [stdout]     |
[INFO] [stdout] 458 -     /**#### 计算出矩阵的解,返回值为一个Option<Solution>若解不存在,则返回None,若解存在则返回 Solution */
[INFO] [stdout] 458 +     /*#### 计算出矩阵的解,返回值为一个Option<Solution>若解不存在,则返回None,若解存在则返回 Solution */
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/mt/mod.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |         if elements.len() != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!elements.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/mt/mod.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 | /                 if position.col == self.col_count() - 1 {
[INFO] [stdout] 159 | |                     false
[INFO] [stdout] 160 | |                 } else {
[INFO] [stdout] 161 | |                     true
[INFO] [stdout] 162 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 157 ~             Some(position)
[INFO] [stdout] 158 ~                 if position.col == self.col_count() - 1 => {
[INFO] [stdout] 159 |                     false
[INFO] [stdout] 160 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this if-then-else expression returns a bool literal
[INFO] [stdout]    --> src/mt/mod.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 | /                 if position.col == self.col_count() - 1 {
[INFO] [stdout] 159 | |                     false
[INFO] [stdout] 160 | |                 } else {
[INFO] [stdout] 161 | |                     true
[INFO] [stdout] 162 | |                 }
[INFO] [stdout]     | |_________________^ help: you can reduce it to: `position.col != self.col_count() - 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stdout]     = note: `#[warn(clippy::needless_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/mt/mod.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         !(pivots.len() == self.col_count())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(pivots.len() != self.col_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:288:44
[INFO] [stdout]     |
[INFO] [stdout] 288 |           let threads: Vec<JoinHandle<()>> = (0..self.row_count())
[INFO] [stdout]     |  ____________________________________________^
[INFO] [stdout] 289 | |             .into_iter()
[INFO] [stdout]     | |________________________^ help: consider removing `.into_iter()`: `(0..self.row_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:397:31
[INFO] [stdout]     |
[INFO] [stdout] 397 |           let handles: Vec<_> = (0..row_count)
[INFO] [stdout]     |  _______________________________^
[INFO] [stdout] 398 | |             .into_iter()
[INFO] [stdout]     | |________________________^ help: consider removing `.into_iter()`: `(0..row_count)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:446:24
[INFO] [stdout]     |
[INFO] [stdout] 446 |           let elements = (0..self.col_count())
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 447 | |             .into_iter()
[INFO] [stdout]     | |________________________^ help: consider removing `.into_iter()`: `(0..self.col_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:449:17
[INFO] [stdout]     |
[INFO] [stdout] 449 | /                 (0..self.row_count())
[INFO] [stdout] 450 | |                     .into_iter()
[INFO] [stdout]     | |________________________________^ help: consider removing `.into_iter()`: `(0..self.row_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/mt/mod.rs:572:16
[INFO] [stdout]     |
[INFO] [stdout] 572 |             if row.len() == 0 {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `row.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/mt/mod.rs:582:9
[INFO] [stdout]     |
[INFO] [stdout] 582 |         output.push_str("\n");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `output.push('\n')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout]     = note: `#[warn(clippy::single_char_add_str)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/mt/mod.rs:590:24
[INFO] [stdout]     |
[INFO] [stdout] 590 |                     if row.len() == 0 {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `row.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/mt/mod.rs:602:9
[INFO] [stdout]     |
[INFO] [stdout] 602 |         output.push_str("\n");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `output.push('\n')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/mt/mod.rs:609:20
[INFO] [stdout]     |
[INFO] [stdout] 609 |                 if pivots.len() == 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `pivots.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/mt/mod.rs:616:21
[INFO] [stdout]     |
[INFO] [stdout] 616 |                     output.push_str("]");
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `output.push(']')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `row` is used to index `elements`
[INFO] [stdout]    --> src/mt/mod.rs:690:20
[INFO] [stdout]     |
[INFO] [stdout] 690 |         for row in 0..self.row_count() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 690 -         for row in 0..self.row_count() {
[INFO] [stdout] 690 +         for (row, <item>) in elements.iter_mut().enumerate().take(self.row_count()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `col` is used to index `elements`
[INFO] [stdout]    --> src/mt/mod.rs:691:24
[INFO] [stdout]     |
[INFO] [stdout] 691 |             for col in 0..self.col_count() {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 691 -             for col in 0..self.col_count() {
[INFO] [stdout] 691 +             for (col, <item>) in elements.iter_mut().enumerate().take(self.col_count()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/mt/mod.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |         if elements.len() != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!elements.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/mt/mod.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 | /                 if position.col == self.col_count() - 1 {
[INFO] [stdout] 159 | |                     false
[INFO] [stdout] 160 | |                 } else {
[INFO] [stdout] 161 | |                     true
[INFO] [stdout] 162 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 157 ~             Some(position)
[INFO] [stdout] 158 ~                 if position.col == self.col_count() - 1 => {
[INFO] [stdout] 159 |                     false
[INFO] [stdout] 160 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this if-then-else expression returns a bool literal
[INFO] [stdout]    --> src/mt/mod.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 | /                 if position.col == self.col_count() - 1 {
[INFO] [stdout] 159 | |                     false
[INFO] [stdout] 160 | |                 } else {
[INFO] [stdout] 161 | |                     true
[INFO] [stdout] 162 | |                 }
[INFO] [stdout]     | |_________________^ help: you can reduce it to: `position.col != self.col_count() - 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stdout]     = note: `#[warn(clippy::needless_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/mt/mod.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         !(pivots.len() == self.col_count())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(pivots.len() != self.col_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:288:44
[INFO] [stdout]     |
[INFO] [stdout] 288 |           let threads: Vec<JoinHandle<()>> = (0..self.row_count())
[INFO] [stdout]     |  ____________________________________________^
[INFO] [stdout] 289 | |             .into_iter()
[INFO] [stdout]     | |________________________^ help: consider removing `.into_iter()`: `(0..self.row_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:397:31
[INFO] [stdout]     |
[INFO] [stdout] 397 |           let handles: Vec<_> = (0..row_count)
[INFO] [stdout]     |  _______________________________^
[INFO] [stdout] 398 | |             .into_iter()
[INFO] [stdout]     | |________________________^ help: consider removing `.into_iter()`: `(0..row_count)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:446:24
[INFO] [stdout]     |
[INFO] [stdout] 446 |           let elements = (0..self.col_count())
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 447 | |             .into_iter()
[INFO] [stdout]     | |________________________^ help: consider removing `.into_iter()`: `(0..self.col_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<usize>`
[INFO] [stdout]    --> src/mt/mod.rs:449:17
[INFO] [stdout]     |
[INFO] [stdout] 449 | /                 (0..self.row_count())
[INFO] [stdout] 450 | |                     .into_iter()
[INFO] [stdout]     | |________________________________^ help: consider removing `.into_iter()`: `(0..self.row_count())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/mt/mod.rs:572:16
[INFO] [stdout]     |
[INFO] [stdout] 572 |             if row.len() == 0 {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `row.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/mt/mod.rs:582:9
[INFO] [stdout]     |
[INFO] [stdout] 582 |         output.push_str("\n");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `output.push('\n')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout]     = note: `#[warn(clippy::single_char_add_str)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/mt/mod.rs:590:24
[INFO] [stdout]     |
[INFO] [stdout] 590 |                     if row.len() == 0 {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `row.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/mt/mod.rs:602:9
[INFO] [stdout]     |
[INFO] [stdout] 602 |         output.push_str("\n");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `output.push('\n')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/mt/mod.rs:609:20
[INFO] [stdout]     |
[INFO] [stdout] 609 |                 if pivots.len() == 0 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `pivots.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/mt/mod.rs:616:21
[INFO] [stdout]     |
[INFO] [stdout] 616 |                     output.push_str("]");
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `output.push(']')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `row` is used to index `elements`
[INFO] [stdout]    --> src/mt/mod.rs:690:20
[INFO] [stdout]     |
[INFO] [stdout] 690 |         for row in 0..self.row_count() {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 690 -         for row in 0..self.row_count() {
[INFO] [stdout] 690 +         for (row, <item>) in elements.iter_mut().enumerate().take(self.row_count()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `col` is used to index `elements`
[INFO] [stdout]    --> src/mt/mod.rs:691:24
[INFO] [stdout]     |
[INFO] [stdout] 691 |             for col in 0..self.col_count() {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 691 -             for col in 0..self.col_count() {
[INFO] [stdout] 691 +             for (col, <item>) in elements.iter_mut().enumerate().take(self.col_count()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:939:9
[INFO] [stdout]     |
[INFO] [stdout] 939 |         assert_eq!(a.can_make_all(), false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout]     = note: `#[warn(clippy::bool_assert_comparison)]` on by default
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 939 -         assert_eq!(a.can_make_all(), false);
[INFO] [stdout] 939 +         assert!(!a.can_make_all());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:949:9
[INFO] [stdout]     |
[INFO] [stdout] 949 |         assert_eq!(a.can_make_all(), false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 949 -         assert_eq!(a.can_make_all(), false);
[INFO] [stdout] 949 +         assert!(!a.can_make_all());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:963:9
[INFO] [stdout]     |
[INFO] [stdout] 963 |         assert_eq!(a.is_linearly_independent(), false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 963 -         assert_eq!(a.is_linearly_independent(), false);
[INFO] [stdout] 963 +         assert!(!a.is_linearly_independent());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:968:9
[INFO] [stdout]     |
[INFO] [stdout] 968 |         assert_eq!(a.is_linearly_independent(), true);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 968 -         assert_eq!(a.is_linearly_independent(), true);
[INFO] [stdout] 968 +         assert!(a.is_linearly_independent());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:978:9
[INFO] [stdout]     |
[INFO] [stdout] 978 |         assert_eq!(a.is_linearly_independent(), false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 978 -         assert_eq!(a.is_linearly_independent(), false);
[INFO] [stdout] 978 +         assert!(!a.is_linearly_independent());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:986:9
[INFO] [stdout]     |
[INFO] [stdout] 986 |         assert_eq!(a.is_linearly_independent(), true);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 986 -         assert_eq!(a.is_linearly_independent(), true);
[INFO] [stdout] 986 +         assert!(a.is_linearly_independent());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:991:9
[INFO] [stdout]     |
[INFO] [stdout] 991 |         assert_eq!(a.is_linearly_independent(), true);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 991 -         assert_eq!(a.is_linearly_independent(), true);
[INFO] [stdout] 991 +         assert!(a.is_linearly_independent());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]    --> src/mt/mod.rs:997:9
[INFO] [stdout]     |
[INFO] [stdout] 997 |         assert_eq!(a.is_injective(), true);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]     |
[INFO] [stdout] 997 -         assert_eq!(a.is_injective(), true);
[INFO] [stdout] 997 +         assert!(a.is_injective());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "7daa52dd8f552779df22d23e24e44865972a2e95deddbe4d518e998b8f4e1f74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7daa52dd8f552779df22d23e24e44865972a2e95deddbe4d518e998b8f4e1f74", kill_on_drop: false }`
[INFO] [stdout] 7daa52dd8f552779df22d23e24e44865972a2e95deddbe4d518e998b8f4e1f74