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[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjad%2Fneural_network_rust'...
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[INFO] updating cached repository https://github.com/benjad/neural_network_rust
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[INFO] updating cached repository https://github.com/benjad/neural_network_rust
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[INFO] updating cached repository https://github.com/benjad/neural_network_rust
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[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12f58f90a1f93ac5e67cdd2a9407acdfad5501b6
[INFO] checking benjad/neural_network_rust against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjad%2Fneural_network_rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benjad/neural_network_rust on toolchain 7308c22c6a8d77e82187e290e1f7459870e48d12
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[INFO] started tweaking git repo https://github.com/benjad/neural_network_rust
[INFO] finished tweaking git repo https://github.com/benjad/neural_network_rust
[INFO] tweaked toml for git repo https://github.com/benjad/neural_network_rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/benjad/neural_network_rust already has a lockfile, it will not be regenerated
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_distr v0.4.0
[INFO] [stderr]   Downloaded ndarray-csv v0.5.1
[INFO] [stderr]   Downloaded ndarray-rand v0.14.0
[INFO] [stderr]   Downloaded ndarray v0.15.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] [stdout] 3d2b14a389306b6b86f036513ead0948869a6ab70440935375e1399586f60ebe
[INFO] running `Command { std: "docker" "start" "-a" "3d2b14a389306b6b86f036513ead0948869a6ab70440935375e1399586f60ebe", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking matrixmultiply v0.3.1
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking ndarray v0.15.2
[INFO] [stderr]     Checking rand_distr v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking ndarray-csv v0.5.1
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking branches v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `arr1`, `arr2`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ndarray::{arr1,arr2};
[INFO] [stdout]   |               ^^^^ ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WriterBuilder`
[INFO] [stdout]  --> src/main.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 | use csv::{ReaderBuilder, WriterBuilder};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Array2Writer`
[INFO] [stdout]   --> src/main.rs:10:33
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray_csv::{Array2Reader, Array2Writer};
[INFO] [stdout]    |                                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `arr1`, `arr2`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ndarray::{arr1,arr2};
[INFO] [stdout]   |               ^^^^ ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WriterBuilder`
[INFO] [stdout]  --> src/main.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 | use csv::{ReaderBuilder, WriterBuilder};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Array2Writer`
[INFO] [stdout]   --> src/main.rs:10:33
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ndarray_csv::{Array2Reader, Array2Writer};
[INFO] [stdout]    |                                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db1`
[INFO] [stdout]   --> src/main.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut db1  = Array::from_shape_vec((10, 1), (dZ1.fold_axis(Axis(1),0.0, |a , i| a + i)).to_vec()).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_db1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z2`
[INFO] [stdout]   --> src/main.rs:57:64
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn back_prop(z1:&ndarray::Array2<f64>,a1:&ndarray::Array2<f64>,z2:&ndarray::Array2<f64>,a2:&ndarray::Array2<f64>,w2:&ndarray::Array2<f64>...
[INFO] [stdout]    |                                                                ^^ help: if this is intentional, prefix it with an underscore: `_z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_val`
[INFO] [stdout]    --> src/main.rs:100:23
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let (max_idx, max_val) =
[INFO] [stdout]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `foward_array` is never read
[INFO] [stdout]    --> src/main.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let mut foward_array = (z1,a1,z2,a2);
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z1`
[INFO] [stdout]    --> src/main.rs:213:10
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let (z1,a1,z2,a2) = foward_prop(&x,&w1,&b1,&w2,&b2);
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_z1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> src/main.rs:213:13
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let (z1,a1,z2,a2) = foward_prop(&x,&w1,&b1,&w2,&b2);
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z2`
[INFO] [stdout]    --> src/main.rs:213:16
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let (z1,a1,z2,a2) = foward_prop(&x,&w1,&b1,&w2,&b2);
[INFO] [stdout]     |                ^^ help: if this is intentional, prefix it with an underscore: `_z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z17`
[INFO] [stdout]    --> src/main.rs:220:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let (z17,a1t,z2t,a2t) = foward_prop(&x_t,&w1,&b1_test,&w2,&b2_test);
[INFO] [stdout]     |          ^^^ help: if this is intentional, prefix it with an underscore: `_z17`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1t`
[INFO] [stdout]    --> src/main.rs:220:14
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let (z17,a1t,z2t,a2t) = foward_prop(&x_t,&w1,&b1_test,&w2,&b2_test);
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_a1t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z2t`
[INFO] [stdout]    --> src/main.rs:220:18
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let (z17,a1t,z2t,a2t) = foward_prop(&x_t,&w1,&b1_test,&w2,&b2_test);
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_z2t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut db2  = Array::from_shape_vec((10, 1), (dZ2.fold_axis(Axis(1),0.0, |a , i| a + i)).to_vec()).unwrap();
[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/main.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut db1  = Array::from_shape_vec((10, 1), (dZ1.fold_axis(Axis(1),0.0, |a , i| a + i)).to_vec()).unwrap();
[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/main.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut w1_m = w1 - alpha * dw1;
[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/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut b1_m = b1 - alpha * db1;
[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/main.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut w2_m = w2 - alpha * dw2;
[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/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut b2_m = b2 - alpha * db2;
[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/main.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let mut z1 =  Array2::<f64>::zeros((10, cols));
[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/main.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut a1 =  Array2::<f64>::zeros((10, cols));
[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/main.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     let mut z2 =  Array2::<f64>::zeros((10, cols));
[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/main.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let mut a2 =  Array2::<f64>::zeros((10, cols));
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_type_of` is never used
[INFO] [stdout]   --> src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `l1_norm` is never used
[INFO] [stdout]   --> src/main.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn l1_norm(x: ArrayView2<f64>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `l2_norm` is never used
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn l2_norm(x: ArrayView1<f64>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Z1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let Z1 = w1.dot(x) + b1;
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `z1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `A1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let A1 = relu(&Z1);
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Z2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let Z2 = w2.dot(&A1) + b2;
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `A2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let A2 = softmax(&Z2);
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dZ2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let dZ2 = a2 - y_hot;
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dW2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let dW2 = 1.0 / m * (dZ2.dot(&a1.t()));
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dZ1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let dZ1 = w2.t().dot(&dZ2) * (relu_dev(z1));
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_z1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dW1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let dW1 = 1.0 / m * dZ1.dot(&x.t());
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_w1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W1` should have a snake case name
[INFO] [stdout]    --> src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let mut W1 = Array2::random((10,784), Uniform::new(-0.5, 0.5));
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case (notice the capitalization): `w1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `B1` should have a snake case name
[INFO] [stdout]    --> src/main.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut B1 = (Array2::random((10,1), Uniform::new(-0.5, 0.5))).dot(&repeater);
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case: `b1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W2` should have a snake case name
[INFO] [stdout]    --> src/main.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut W2 = Array2::random((10,10), Uniform::new(-0.5, 0.5));
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case (notice the capitalization): `w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `B2` should have a snake case name
[INFO] [stdout]    --> src/main.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut B2 = (Array2::random((10,1), Uniform::new(-0.5, 0.5))).dot(&repeater);
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case: `b2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `db1`
[INFO] [stdout]   --> src/main.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut db1  = Array::from_shape_vec((10, 1), (dZ1.fold_axis(Axis(1),0.0, |a , i| a + i)).to_vec()).unwrap();
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_db1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z2`
[INFO] [stdout]   --> src/main.rs:57:64
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn back_prop(z1:&ndarray::Array2<f64>,a1:&ndarray::Array2<f64>,z2:&ndarray::Array2<f64>,a2:&ndarray::Array2<f64>,w2:&ndarray::Array2<f64>...
[INFO] [stdout]    |                                                                ^^ help: if this is intentional, prefix it with an underscore: `_z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_val`
[INFO] [stdout]    --> src/main.rs:100:23
[INFO] [stdout]     |
[INFO] [stdout] 100 |         let (max_idx, max_val) =
[INFO] [stdout]     |                       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `foward_array` is never read
[INFO] [stdout]    --> src/main.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let mut foward_array = (z1,a1,z2,a2);
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z1`
[INFO] [stdout]    --> src/main.rs:213:10
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let (z1,a1,z2,a2) = foward_prop(&x,&w1,&b1,&w2,&b2);
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_z1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]    --> src/main.rs:213:13
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let (z1,a1,z2,a2) = foward_prop(&x,&w1,&b1,&w2,&b2);
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z2`
[INFO] [stdout]    --> src/main.rs:213:16
[INFO] [stdout]     |
[INFO] [stdout] 213 |     let (z1,a1,z2,a2) = foward_prop(&x,&w1,&b1,&w2,&b2);
[INFO] [stdout]     |                ^^ help: if this is intentional, prefix it with an underscore: `_z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z17`
[INFO] [stdout]    --> src/main.rs:220:10
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let (z17,a1t,z2t,a2t) = foward_prop(&x_t,&w1,&b1_test,&w2,&b2_test);
[INFO] [stdout]     |          ^^^ help: if this is intentional, prefix it with an underscore: `_z17`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1t`
[INFO] [stdout]    --> src/main.rs:220:14
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let (z17,a1t,z2t,a2t) = foward_prop(&x_t,&w1,&b1_test,&w2,&b2_test);
[INFO] [stdout]     |              ^^^ help: if this is intentional, prefix it with an underscore: `_a1t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z2t`
[INFO] [stdout]    --> src/main.rs:220:18
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let (z17,a1t,z2t,a2t) = foward_prop(&x_t,&w1,&b1_test,&w2,&b2_test);
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_z2t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut db2  = Array::from_shape_vec((10, 1), (dZ2.fold_axis(Axis(1),0.0, |a , i| a + i)).to_vec()).unwrap();
[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/main.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut db1  = Array::from_shape_vec((10, 1), (dZ1.fold_axis(Axis(1),0.0, |a , i| a + i)).to_vec()).unwrap();
[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/main.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut w1_m = w1 - alpha * dw1;
[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/main.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |     let mut b1_m = b1 - alpha * db1;
[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/main.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let mut w2_m = w2 - alpha * dw2;
[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/main.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut b2_m = b2 - alpha * db2;
[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/main.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |     let mut z1 =  Array2::<f64>::zeros((10, cols));
[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/main.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut a1 =  Array2::<f64>::zeros((10, cols));
[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/main.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     let mut z2 =  Array2::<f64>::zeros((10, cols));
[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/main.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let mut a2 =  Array2::<f64>::zeros((10, cols));
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_type_of` is never used
[INFO] [stdout]   --> src/main.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `l1_norm` is never used
[INFO] [stdout]   --> src/main.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn l1_norm(x: ArrayView2<f64>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `l2_norm` is never used
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn l2_norm(x: ArrayView1<f64>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Z1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let Z1 = w1.dot(x) + b1;
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `z1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `A1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let A1 = relu(&Z1);
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Z2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let Z2 = w2.dot(&A1) + b2;
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `A2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let A2 = softmax(&Z2);
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dZ2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let dZ2 = a2 - y_hot;
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_z2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dW2` should have a snake case name
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let dW2 = 1.0 / m * (dZ2.dot(&a1.t()));
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dZ1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let dZ1 = w2.t().dot(&dZ2) * (relu_dev(z1));
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_z1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `dW1` should have a snake case name
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let dW1 = 1.0 / m * dZ1.dot(&x.t());
[INFO] [stdout]    |         ^^^ help: convert the identifier to snake case: `d_w1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W1` should have a snake case name
[INFO] [stdout]    --> src/main.rs:128:13
[INFO] [stdout]     |
[INFO] [stdout] 128 |     let mut W1 = Array2::random((10,784), Uniform::new(-0.5, 0.5));
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case (notice the capitalization): `w1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `B1` should have a snake case name
[INFO] [stdout]    --> src/main.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut B1 = (Array2::random((10,1), Uniform::new(-0.5, 0.5))).dot(&repeater);
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case: `b1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `W2` should have a snake case name
[INFO] [stdout]    --> src/main.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let mut W2 = Array2::random((10,10), Uniform::new(-0.5, 0.5));
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case (notice the capitalization): `w2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `B2` should have a snake case name
[INFO] [stdout]    --> src/main.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let mut B2 = (Array2::random((10,1), Uniform::new(-0.5, 0.5))).dot(&repeater);
[INFO] [stdout]     |             ^^ help: convert the identifier to snake case: `b2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.30s
[INFO] running `Command { std: "docker" "inspect" "3d2b14a389306b6b86f036513ead0948869a6ab70440935375e1399586f60ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d2b14a389306b6b86f036513ead0948869a6ab70440935375e1399586f60ebe", kill_on_drop: false }`
[INFO] [stdout] 3d2b14a389306b6b86f036513ead0948869a6ab70440935375e1399586f60ebe