[INFO] updating cached repository Direnol/Simplex-Method
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Direnol/Simplex-Method
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Direnol/Simplex-Method" "work/ex/clippy-test-run/sources/stable/gh/Direnol/Simplex-Method"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Direnol/Simplex-Method'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Direnol/Simplex-Method" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Direnol/Simplex-Method"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Direnol/Simplex-Method'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91ee756515c4e946fc1cd49edbdaf9fd10c3aaec
[INFO] sha for GitHub repo Direnol/Simplex-Method: 91ee756515c4e946fc1cd49edbdaf9fd10c3aaec
[INFO] validating manifest of Direnol/Simplex-Method 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 Direnol/Simplex-Method 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 Direnol/Simplex-Method
[INFO] finished frobbing Direnol/Simplex-Method
[INFO] frobbed toml for Direnol/Simplex-Method written to work/ex/clippy-test-run/sources/stable/gh/Direnol/Simplex-Method/Cargo.toml
[INFO] started frobbing Direnol/Simplex-Method
[INFO] finished frobbing Direnol/Simplex-Method
[INFO] frobbed toml for Direnol/Simplex-Method written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Direnol/Simplex-Method/Cargo.toml
[INFO] crate Direnol/Simplex-Method has a lockfile. skipping
[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 Direnol/Simplex-Method against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Direnol/Simplex-Method:/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] a52e55423ad6077ba4fbbdb707ed3ee7b0cddd1e126e8beeea1839be3a2644b8
[INFO] running `"docker" "start" "-a" "a52e55423ad6077ba4fbbdb707ed3ee7b0cddd1e126e8beeea1839be3a2644b8"`
[INFO] [stderr]     Checking rsimpl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: you seem to be trying to use `Box<Vec<T>>`. Consider using just `Vec<T>`
[INFO] [stderr]   --> src/simplex/structs.rs:29:14
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub mat: Box<Vec<Row>>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::box_vec)] on by default
[INFO] [stderr]    = help: `Vec<T>` is already on the heap, `Box<Vec<T>>` makes an extra allocation.
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_vec
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `Box<Vec<T>>`. Consider using just `Vec<T>`
[INFO] [stderr]   --> src/simplex/structs.rs:37:16
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub names: Box<Vec<usize>>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: `Vec<T>` is already on the heap, `Box<Vec<T>>` makes an extra allocation.
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_vec
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `simplex::structs::Simplex`
[INFO] [stderr]   --> src/simplex/structs.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | /     pub fn new() -> Simplex {
[INFO] [stderr] 42 | |         Simplex {
[INFO] [stderr] 43 | |             action: SimplexMethod::Max,
[INFO] [stderr] 44 | |             mat: Box::new(Vec::new()),
[INFO] [stderr] ...  |
[INFO] [stderr] 49 | |         }
[INFO] [stderr] 50 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 40 | impl Default for simplex::structs::Simplex {
[INFO] [stderr] 41 |     fn default() -> Self {
[INFO] [stderr] 42 |         Self::new()
[INFO] [stderr] 43 |     }
[INFO] [stderr] 44 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/simplex/structs.rs:64:28
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let acc = (0usize, self.mat.last().unwrap().first().unwrap().clone());
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.mat.last().unwrap().first().unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/simplex/structs.rs:68:28
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let acc = (0usize, self.res.first().unwrap().clone());
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.res.first().unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/simplex/structs.rs:98:36
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 .for_each(|(i, j)| *j = i * tmp + *j);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^ help: replace it with: `*j += i * tmp`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/simplex/structs.rs:100:13
[INFO] [stderr]     |
[INFO] [stderr] 100 |             self.res[r] = self.res[row] * tmp + self.res[r];
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.res[r] += self.res[row] * tmp`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/simplex/structs.rs:105:32
[INFO] [stderr]     |
[INFO] [stderr] 105 |             .for_each(|(i, j)| *j = i * tmp + *j);
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: replace it with: `*j += i * tmp`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/simplex/structs.rs:136:18
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for i in 1..self.n + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: use: `1..=self.n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/simplex/structs.rs:144:16
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let f: fn((usize, f64), (usize, f64)) -> (usize, f64) = |x: (usize, f64), y: (usize, f64)| {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |             ::std::io::stdin().read(&mut buf);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/simplex/structs.rs:175:18
[INFO] [stderr]     |
[INFO] [stderr] 175 |         for i in 1..self.n + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: use: `1..=self.n`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:193:9
[INFO] [stderr]     |
[INFO] [stderr] 193 |         writeln!(f, "Action: {:?}, N: {}, K: {}", self.action, self.n, self.k);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:194:9
[INFO] [stderr]     |
[INFO] [stderr] 194 |         write!(f, "X:   {: ^6}", 'z');
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/simplex/structs.rs:195:18
[INFO] [stderr]     |
[INFO] [stderr] 195 |         for i in 1..self.n + self.k + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^ help: use: `1..=self.n + self.k`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |             write!(f, "{:^8}", format!("x{}", i));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         writeln!(f, " | {: ^5}", "res");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:201:13
[INFO] [stderr]     |
[INFO] [stderr] 201 | /             writeln!(
[INFO] [stderr] 202 | |                 f,
[INFO] [stderr] 203 | |                 "{}: {:>6.3?} | {:.3}",
[INFO] [stderr] 204 | |                 self.names.get(row).or(Some(&zero)).unwrap(),
[INFO] [stderr] 205 | |                 v.0,
[INFO] [stderr] 206 | |                 v.1
[INFO] [stderr] 207 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or` followed by a function call
[INFO] [stderr]    --> src/simplex/structs.rs:204:37
[INFO] [stderr]     |
[INFO] [stderr] 204 |                 self.names.get(row).or(Some(&zero)).unwrap(),
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: try this: `or_else(|| Some(&zero))`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/simplex/mod.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |         if c.vars.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `c.vars.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/simplex/mod.rs:54:18
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for i in 1..(count_all_vars + 1) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use: `1..=count_all_vars`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/simplex/mod.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for i in 0..n + 1 {
[INFO] [stderr]    |              ^^^^^^^^ help: use: `0..=n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `Box<Vec<T>>`. Consider using just `Vec<T>`
[INFO] [stderr]   --> src/simplex/structs.rs:29:14
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub mat: Box<Vec<Row>>,
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::box_vec)] on by default
[INFO] [stderr]    = help: `Vec<T>` is already on the heap, `Box<Vec<T>>` makes an extra allocation.
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_vec
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use `Box<Vec<T>>`. Consider using just `Vec<T>`
[INFO] [stderr]   --> src/simplex/structs.rs:37:16
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub names: Box<Vec<usize>>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: `Vec<T>` is already on the heap, `Box<Vec<T>>` makes an extra allocation.
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#box_vec
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider adding a `Default` implementation for `simplex::structs::Simplex`
[INFO] [stderr]   --> src/simplex/structs.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 | /     pub fn new() -> Simplex {
[INFO] [stderr] 42 | |         Simplex {
[INFO] [stderr] 43 | |             action: SimplexMethod::Max,
[INFO] [stderr] 44 | |             mat: Box::new(Vec::new()),
[INFO] [stderr] ...  |
[INFO] [stderr] 49 | |         }
[INFO] [stderr] 50 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 40 | impl Default for simplex::structs::Simplex {
[INFO] [stderr] 41 |     fn default() -> Self {
[INFO] [stderr] 42 |         Self::new()
[INFO] [stderr] 43 |     }
[INFO] [stderr] 44 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/simplex/structs.rs:64:28
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let acc = (0usize, self.mat.last().unwrap().first().unwrap().clone());
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.mat.last().unwrap().first().unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/simplex/structs.rs:68:28
[INFO] [stderr]    |
[INFO] [stderr] 68 |         let acc = (0usize, self.res.first().unwrap().clone());
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.res.first().unwrap()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/simplex/structs.rs:98:36
[INFO] [stderr]    |
[INFO] [stderr] 98 |                 .for_each(|(i, j)| *j = i * tmp + *j);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^ help: replace it with: `*j += i * tmp`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/simplex/structs.rs:100:13
[INFO] [stderr]     |
[INFO] [stderr] 100 |             self.res[r] = self.res[row] * tmp + self.res[r];
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.res[r] += self.res[row] * tmp`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/simplex/structs.rs:105:32
[INFO] [stderr]     |
[INFO] [stderr] 105 |             .for_each(|(i, j)| *j = i * tmp + *j);
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: replace it with: `*j += i * tmp`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/simplex/structs.rs:136:18
[INFO] [stderr]     |
[INFO] [stderr] 136 |         for i in 1..self.n + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: use: `1..=self.n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/simplex/structs.rs:144:16
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let f: fn((usize, f64), (usize, f64)) -> (usize, f64) = |x: (usize, f64), y: (usize, f64)| {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |             ::std::io::stdin().read(&mut buf);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/simplex/structs.rs:175:18
[INFO] [stderr]     |
[INFO] [stderr] 175 |         for i in 1..self.n + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: use: `1..=self.n`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:193:9
[INFO] [stderr]     |
[INFO] [stderr] 193 |         writeln!(f, "Action: {:?}, N: {}, K: {}", self.action, self.n, self.k);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:194:9
[INFO] [stderr]     |
[INFO] [stderr] 194 |         write!(f, "X:   {: ^6}", 'z');
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/simplex/structs.rs:195:18
[INFO] [stderr]     |
[INFO] [stderr] 195 |         for i in 1..self.n + self.k + 1 {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^^^^^^^^ help: use: `1..=self.n + self.k`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |             write!(f, "{:^8}", format!("x{}", i));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |         writeln!(f, " | {: ^5}", "res");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/simplex/structs.rs:201:13
[INFO] [stderr]     |
[INFO] [stderr] 201 | /             writeln!(
[INFO] [stderr] 202 | |                 f,
[INFO] [stderr] 203 | |                 "{}: {:>6.3?} | {:.3}",
[INFO] [stderr] 204 | |                 self.names.get(row).or(Some(&zero)).unwrap(),
[INFO] [stderr] 205 | |                 v.0,
[INFO] [stderr] 206 | |                 v.1
[INFO] [stderr] 207 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or` followed by a function call
[INFO] [stderr]    --> src/simplex/structs.rs:204:37
[INFO] [stderr]     |
[INFO] [stderr] 204 |                 self.names.get(row).or(Some(&zero)).unwrap(),
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: try this: `or_else(|| Some(&zero))`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/simplex/mod.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |         if c.vars.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `c.vars.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/simplex/mod.rs:54:18
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for i in 1..(count_all_vars + 1) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^ help: use: `1..=count_all_vars`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/simplex/mod.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     for i in 0..n + 1 {
[INFO] [stderr]    |              ^^^^^^^^ help: use: `0..=n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]  --> src/main.rs:9:33
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let conf_file = args.get(1).ok_or("Not enough argument".to_string())?;
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| "Not enough argument".to_string())`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]  --> src/main.rs:9:33
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let conf_file = args.get(1).ok_or("Not enough argument".to_string())?;
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| "Not enough argument".to_string())`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.98s
[INFO] running `"docker" "inspect" "a52e55423ad6077ba4fbbdb707ed3ee7b0cddd1e126e8beeea1839be3a2644b8"`
[INFO] running `"docker" "rm" "-f" "a52e55423ad6077ba4fbbdb707ed3ee7b0cddd1e126e8beeea1839be3a2644b8"`
[INFO] [stdout] a52e55423ad6077ba4fbbdb707ed3ee7b0cddd1e126e8beeea1839be3a2644b8