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[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/richwandell/rust-algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichwandell%2Frust-algorithms", kill_on_drop: false }`
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[INFO] [stdout] 58cbef2915c323c7a57c4068b5f52094516e952e
[INFO] checking richwandell/rust-algorithms against try#1f5783cbeb5da8b38566d718631d016891e9c912 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichwandell%2Frust-algorithms" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/richwandell/rust-algorithms on toolchain 1f5783cbeb5da8b38566d718631d016891e9c912
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[INFO] tweaked toml for git repo https://github.com/richwandell/rust-algorithms written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/richwandell/rust-algorithms 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" "+1f5783cbeb5da8b38566d718631d016891e9c912" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded noisy_float v0.1.11
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[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.12
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[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]     Checking rawpointer v0.2.1
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[INFO] [stderr]    Compiling num-integer v0.1.41
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[INFO] [stderr]     Checking Algos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/bin/spoj_discrete_roots.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grid_x` is never read
[INFO] [stdout]   --> src/bin/sudoku_solver.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut grid_x = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grid_y` is never read
[INFO] [stdout]   --> src/bin/sudoku_solver.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut grid_y = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/sudoku_solver.rs:48:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn solve(mut r:i32, mut c:i32, mut board: &mut Vec<Vec<i32>>) -> bool {
[INFO] [stdout]    |                                ----^^^^^
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/bin/spoj_discrete_roots.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         if b & 1 {
[INFO] [stdout]   |            ^^^^^ expected `bool`, found `i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/spoj_prime_generator.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         io::stdin().read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let _ = io::stdin().read_line(&mut input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/spoj_prime_generator.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         io::stdin().read_line(&mut input);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let _ = io::stdin().read_line(&mut input);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grid_x` is never read
[INFO] [stdout]   --> src/bin/sudoku_solver.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut grid_x = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grid_y` is never read
[INFO] [stdout]   --> src/bin/sudoku_solver.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let mut grid_y = 0;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `fact`
[INFO] [stdout]   --> src/bin/spoj_discrete_roots.rs:41:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut fact: Vec<i32> = Vec::new();
[INFO] [stdout]    |         -------- move occurs because `fact` has type `Vec<i32>`, which does not implement the `Copy` trait
[INFO] [stdout] ...
[INFO] [stdout] 39 |     while res <= p {
[INFO] [stdout]    |     -------------- inside of this loop
[INFO] [stdout] 40 |         let mut ok = true;
[INFO] [stdout] 41 |         for factor in fact {
[INFO] [stdout]    |                       ^^^^ `fact` moved due to this implicit call to `.into_iter()`, in previous iteration of loop
[INFO] [stdout]    |
[INFO] [stdout] note: `into_iter` takes ownership of the receiver `self`, which moves `fact`
[INFO] [stdout]   --> /rustc/1f5783cbeb5da8b38566d718631d016891e9c912/library/core/src/iter/traits/collect.rs:310:18
[INFO] [stdout] help: consider iterating over a slice of the `Vec<i32>`'s content to avoid moving into the `for` loop
[INFO] [stdout]    |
[INFO] [stdout] 41 |         for factor in &fact {
[INFO] [stdout]    |                       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/spoj_discrete_roots.rs:66:13
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let n: i32 = split[0].trim().parse().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/bin/spoj_discrete_roots.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let k: i32 = split[1].trim().parse().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/bin/spoj_discrete_roots.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let a: i32 = split[2].trim().parse().unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/sudoku_solver.rs:48:32
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn solve(mut r:i32, mut c:i32, mut board: &mut Vec<Vec<i32>>) -> bool {
[INFO] [stdout]    |                                ----^^^^^
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayBase`, `Ix`, and `OwnedRepr`
[INFO] [stdout]  --> src/bin/neural_network.rs:5:36
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ndarray::{arr2, Array, Array2, ArrayBase, Ix, OwnedRepr};
[INFO] [stdout]   |                                    ^^^^^^^^^  ^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/producer_consumer_shared_memory.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     for n in 0..cpus {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/producer_consumer_shared_memory.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     for i in 0..cpus {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::Ix2`
[INFO] [stdout]  --> src/bin/neural_network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ndarray::Ix2;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0382.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Algos` (bin "spoj_discrete_roots" test) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0271]: type mismatch resolving `<&[usize] as ShapeBuilder>::Dim == Dim<[usize; 2]>`
[INFO] [stdout]    --> src/bin/neural_network.rs:90:40
[INFO] [stdout]     |
[INFO] [stdout] 90  |         let ones = Array2::<f64>::ones(sig.shape());
[INFO] [stdout]     |                    ------------------- ^^^^^^^^^^^ expected `Dim<[usize; 2]>`, found `Dim<IxDynImpl>`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected struct `Dim<[usize; 2]>`
[INFO] [stdout]                found struct `Dim<IxDynImpl>`
[INFO] [stdout] note: required by a bound in `ndarray::impl_constructors::<impl ArrayBase<S, D>>::ones`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.13.0/src/impl_constructors.rs:296:26
[INFO] [stdout]     |
[INFO] [stdout] 293 |     pub fn ones<Sh>(shape: Sh) -> Self
[INFO] [stdout]     |            ---- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 296 |         Sh: ShapeBuilder<Dim = D>,
[INFO] [stdout]     |                          ^^^^^^^ required by this bound in `ndarray::impl_constructors::<impl ArrayBase<S, D>>::ones`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_shared_memory.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         sptx.send(exit);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let _ = sptx.send(exit);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `sub` found for struct `ArrayBase` in the current scope
[INFO] [stdout]   --> src/bin/neural_network.rs:91:30
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let one_minus = ones.sub(&sig);
[INFO] [stdout]    |                              ^^^
[INFO] [stdout]   --> /rustc/1f5783cbeb5da8b38566d718631d016891e9c912/library/core/src/ops/arith.rs:203:8
[INFO] [stdout]    |
[INFO] [stdout]    = note: the method is available for `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `sum` with a similar name, but with different arguments
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.13.0/src/numeric/impl_numeric.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | /     pub fn sum(&self) -> A
[INFO] [stdout] 34 | |     where
[INFO] [stdout] 35 | |         A: Clone + Add<Output = A> + num_traits::Zero,
[INFO] [stdout]    | |______________________________________________________^
[INFO] [stdout] help: trait `Sub` which provides `sub` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::ops::Sub;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `usize: SampleBorrow<{float}>` is not satisfied
[INFO] [stdout]    --> src/bin/neural_network.rs:106:71
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let s = Array::random((1, X.shape()[0]), Uniform::new(0., X.shape()[0]));
[INFO] [stdout]     |                                                      ------------     ^^^^^^^^^^^^ the trait `SampleBorrow<{float}>` is not implemented for `usize`
[INFO] [stdout]     |                                                      |
[INFO] [stdout]     |                                                      required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `SampleBorrow<Borrowed>` is implemented for `&'a Borrowed`
[INFO] [stdout] note: required by a bound in `Uniform::<X>::new`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand-0.7.2/src/distributions/uniform.rs:172:19
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn new<B1, B2>(low: B1, high: B2) -> Uniform<X>
[INFO] [stdout]     |            --- required by a bound in this associated function
[INFO] [stdout] 171 |         where B1: SampleBorrow<X> + Sized,
[INFO] [stdout] 172 |               B2: SampleBorrow<X> + Sized
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^ required by this bound in `Uniform::<X>::new`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     for n in 0..cpus {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     for i in 0..cpus {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `usize: NdIndex<Dim<[usize; 2]>>` is not satisfied
[INFO] [stdout]    --> src/bin/neural_network.rs:109:27
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 let i = s[n as usize];
[INFO] [stdout]     |                           ^^^^^^^^^^ the trait `NdIndex<Dim<[usize; 2]>>` is not implemented for `usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following other types implement trait `NdIndex<E>`:
[INFO] [stdout]               `usize` implements `NdIndex<Dim<IxDynImpl>>`
[INFO] [stdout]               `usize` implements `NdIndex<Dim<[usize; 1]>>`
[INFO] [stdout]     = note: required for `ArrayBase<OwnedRepr<{float}>, Dim<[usize; 2]>>` to implement `std::ops::Index<usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ViewRepr<&f64>: DataOwned` is not satisfied
[INFO] [stdout]     --> src/bin/neural_network.rs:110:43
[INFO] [stdout]      |
[INFO] [stdout] 110  |                 let x = X.row(i as usize).reshape((1, X.shape()[1]));
[INFO] [stdout]      |                                           ^^^^^^^ the trait `DataOwned` is not implemented for `ViewRepr<&f64>`
[INFO] [stdout]      |
[INFO] [stdout]      = help: the following other types implement trait `DataOwned`:
[INFO] [stdout]                OwnedArcRepr<A>
[INFO] [stdout]                OwnedRepr<A>
[INFO] [stdout] note: required by a bound in `ndarray::impl_methods::<impl ArrayBase<S, D>>::reshape`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.13.0/src/impl_methods.rs:1457:25
[INFO] [stdout]      |
[INFO] [stdout] 1455 |     pub fn reshape<E>(&self, shape: E) -> ArrayBase<S, E::Dim>
[INFO] [stdout]      |            ------- required by a bound in this associated function
[INFO] [stdout] 1456 |     where
[INFO] [stdout] 1457 |         S: DataShared + DataOwned,
[INFO] [stdout]      |                         ^^^^^^^^^ required by this bound in `ndarray::impl_methods::<impl ArrayBase<S, D>>::reshape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     for n in 0..cpus {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     for i in 0..cpus {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (mut mptx, mprx) = mpsc::channel();
[INFO] [stdout]    |          ----^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let (mut mptx, mprx) = mpsc::channel();
[INFO] [stdout]    |          ----^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: arguments to this method are incorrect
[INFO] [stdout]    --> src/bin/neural_network.rs:112:43
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 let (djdw1, djdw2) = self.cost_function_prime(&x, &yt);
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: expected `&ArrayBase<OwnedRepr<f64>, ...>`, found `&ArrayBase<ViewRepr<&f64>, ...>`
[INFO] [stdout]    --> src/bin/neural_network.rs:112:63
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 let (djdw1, djdw2) = self.cost_function_prime(&x, &yt);
[INFO] [stdout]     |                                                               ^^
[INFO] [stdout]     = note: expected reference `&ArrayBase<OwnedRepr<f64>, _>`
[INFO] [stdout]                found reference `&ArrayBase<ViewRepr<&f64>, _>`
[INFO] [stdout] note: expected `&ArrayBase<OwnedRepr<f64>, ...>`, found `&ArrayBase<ViewRepr<&f64>, ...>`
[INFO] [stdout]    --> src/bin/neural_network.rs:112:67
[INFO] [stdout]     |
[INFO] [stdout] 112 |                 let (djdw1, djdw2) = self.cost_function_prime(&x, &yt);
[INFO] [stdout]     |                                                                   ^^^
[INFO] [stdout]     = note: expected reference `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]                found reference `&ArrayBase<ViewRepr<&f64>, Dim<[usize; 1]>>`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> src/bin/neural_network.rs:24:8
[INFO] [stdout]     |
[INFO] [stdout] 24  |     fn cost_function_prime(&mut self, X: &Array2<f64>, y: &Array2<f64>) -> (Array2<f64>, Array2<f64>);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^            -                -
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<f64 as Sub<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>>::Output == f64`
[INFO] [stdout]    --> src/bin/neural_network.rs:114:36
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 self.W1 = &self.W1 - d1;
[INFO] [stdout]     |                                    ^ expected `f64`, found `ArrayBase<OwnedRepr<f64>, ...>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type `f64`
[INFO] [stdout]              found struct `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]     = note: required for `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` to implement `Sub<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>: ScalarOperand` is not satisfied
[INFO] [stdout]    --> src/bin/neural_network.rs:114:36
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 self.W1 = &self.W1 - d1;
[INFO] [stdout]     |                                    ^ the trait `ScalarOperand` is not implemented for `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` to implement `Sub<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>`
[INFO] [stdout] help: consider removing the borrow
[INFO] [stdout]     |
[INFO] [stdout] 114 -                 self.W1 = &self.W1 - d1;
[INFO] [stdout] 114 +                 self.W1 = self.W1 - d1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0271]: type mismatch resolving `<f64 as Sub<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>>::Output == f64`
[INFO] [stdout]    --> src/bin/neural_network.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 self.W2 = &self.W2 - d2;
[INFO] [stdout]     |                                    ^ expected `f64`, found `ArrayBase<OwnedRepr<f64>, ...>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type `f64`
[INFO] [stdout]              found struct `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]     = note: required for `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` to implement `Sub<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>: ScalarOperand` is not satisfied
[INFO] [stdout]    --> src/bin/neural_network.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 self.W2 = &self.W2 - d2;
[INFO] [stdout]     |                                    ^ the trait `ScalarOperand` is not implemented for `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` to implement `Sub<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>`
[INFO] [stdout] help: consider removing the borrow
[INFO] [stdout]     |
[INFO] [stdout] 116 -                 self.W2 = &self.W2 - d2;
[INFO] [stdout] 116 +                 self.W2 = self.W2 - d2;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 2 arguments but 0 arguments were supplied
[INFO] [stdout]    --> src/bin/neural_network.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 |             let cost = self.cost_function();
[INFO] [stdout]     |                             ^^^^^^^^^^^^^-- two arguments of type `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` and `&ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>` are missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> src/bin/neural_network.rs:25:8
[INFO] [stdout]     |
[INFO] [stdout] 25  |     fn cost_function(&mut self, X: &Array2<f64>, y: &Array2<f64>) -> f64;
[INFO] [stdout]     |        ^^^^^^^^^^^^^            -                -
[INFO] [stdout] help: provide the arguments
[INFO] [stdout]     |
[INFO] [stdout] 119 |             let cost = self.cost_function(/* &ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>> */, /* &ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>> */);
[INFO] [stdout]     |                                           ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |                     tx.send(exit);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |                     let _ = tx.send(exit);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 tx.send(return_value);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 let _ = tx.send(return_value);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         sptx.send(exit);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = sptx.send(exit);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |                     tx.send(exit);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 21 |                     let _ = tx.send(exit);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 tx.send(return_value);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 let _ = tx.send(return_value);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/producer_consumer_message_passing.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         sptx.send(exit);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = sptx.send(exit);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `powi` found for struct `ArrayBase` in the current scope
[INFO] [stdout]    --> src/bin/neural_network.rs:131:37
[INFO] [stdout]     |
[INFO] [stdout] 131 |         let squared_summed = ymyhat.powi(2).sum();
[INFO] [stdout]     |                                     ^^^^ method not found in `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: cannot multiply `{integer}` by `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]    --> src/bin/neural_network.rs:143:23
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let rsub = -1 * ymyh;
[INFO] [stdout]     |                       ^ no implementation for `{integer} * ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Mul<ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>>` is not implemented for `{integer}`
[INFO] [stdout]     = help: the following other types implement trait `Mul<Rhs>`:
[INFO] [stdout]               `&f128` implements `Mul<f128>`
[INFO] [stdout]               `&f128` implements `Mul`
[INFO] [stdout]               `&f16` implements `Mul<f16>`
[INFO] [stdout]               `&f16` implements `Mul`
[INFO] [stdout]               `&f32` implements `Mul<&num_complex::Complex<f32>>`
[INFO] [stdout]               `&f32` implements `Mul<f32>`
[INFO] [stdout]               `&f32` implements `Mul<num_complex::Complex<f32>>`
[INFO] [stdout]               `&f32` implements `Mul`
[INFO] [stdout]             and 137 others
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/bin/neural_network.rs:154:31
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let djdw1 = X.t().dot(delta2);
[INFO] [stdout]     |                           --- ^^^^^^ expected `&_`, found `ArrayBase<OwnedRepr<f64>, ...>`
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           arguments to this method are incorrect
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected reference `&_`
[INFO] [stdout]                   found struct `ArrayBase<OwnedRepr<f64>, Dim<[usize; 2]>>`
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.13.0/src/linalg/impl_linalg.rs:245:12
[INFO] [stdout]     |
[INFO] [stdout] 245 |     pub fn dot<Rhs>(&self, rhs: &Rhs) -> <Self as Dot<Rhs>>::Output
[INFO] [stdout]     |            ^^^
[INFO] [stdout] help: consider borrowing here
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let djdw1 = X.t().dot(&delta2);
[INFO] [stdout]     |                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/neural_network.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut W1: Array2<f64> = Array2::<f64>::random(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/neural_network.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut W2: Array2<f64> = Array2::<f64>::random(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/neural_network.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut Z2: Array2<f64> = Array2::<f64>::random(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/neural_network.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut Z3: Array2<f64> = Array2::<f64>::random(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/neural_network.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let mut A2: Array2<f64> = Array2::<f64>::random(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/neural_network.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let mut bottom = z * -1.;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0271, E0277, E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Algos` (bin "neural_network") due to 14 previous errors; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "25232467d726b428451153943e297730c8e063effc2b8bc21fcdce39205a88db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25232467d726b428451153943e297730c8e063effc2b8bc21fcdce39205a88db", kill_on_drop: false }`
[INFO] [stdout] 25232467d726b428451153943e297730c8e063effc2b8bc21fcdce39205a88db
