[INFO] cloning repository https://github.com/jakub-m/rs-learning-autograd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakub-m/rs-learning-autograd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakub-m%2Frs-learning-autograd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakub-m%2Frs-learning-autograd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 526f7f6cb31e5282f551c6e7c174a60bf6bc9f8a
[INFO] checking jakub-m/rs-learning-autograd against 895980e0290783bb09b1ccf1b11f14eb09b10430 for pr-160186
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakub-m%2Frs-learning-autograd" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jakub-m/rs-learning-autograd
[INFO] finished tweaking git repo https://github.com/jakub-m/rs-learning-autograd
[INFO] tweaked toml for git repo https://github.com/jakub-m/rs-learning-autograd written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jakub-m/rs-learning-autograd on toolchain 895980e0290783bb09b1ccf1b11f14eb09b10430
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jakub-m/rs-learning-autograd 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" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae
[INFO] running `Command { std: "docker" "start" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking approx_eq v0.1.8
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.91
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rs-autograd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: function `conv2d_adjoin` is never used
[INFO] [stdout]   --> src/nar/conv.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn conv2d_adjoin<A>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/nar/conv.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 | struct BadShapeError(String);
[INFO] [stdout]    |        ------------- ^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `BadShapeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `V2Helper` is never used
[INFO] [stdout]    --> src/nar/conv.rs:104:7
[INFO] [stdout]     |
[INFO] [stdout] 104 | trait V2Helper {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ShapeHelper` is never used
[INFO] [stdout]    --> src/nar/conv.rs:115:7
[INFO] [stdout]     |
[INFO] [stdout] 115 | trait ShapeHelper {
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `V2` is never constructed
[INFO] [stdout]  --> src/nar/conv_iter.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct V2(pub usize, pub usize);
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `iter`, `contains`, and `try_sub` are never used
[INFO] [stdout]   --> src/nar/conv_iter.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl V2 {
[INFO] [stdout]    | ------- methods in this implementation
[INFO] [stdout]  9 |     pub fn iter(&self) -> V2Iterator {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn contains(&self, other: V2) -> Option<V2> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn try_sub(&self, other: V2) -> Option<V2> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `V2Iterator` is never constructed
[INFO] [stdout]   --> src/nar/conv_iter.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct V2Iterator {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/float/syntax.rs:137:27
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat<'_>;
[INFO] [stdout]     |                                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/float/syntax.rs:141:27
[INFO] [stdout]     |
[INFO] [stdout] 141 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 141 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat<'_> {
[INFO] [stdout]     |                                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rngs::StdRng`
[INFO] [stdout]  --> tests/test_convolve.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{self, rngs::StdRng};
[INFO] [stdout]   |                  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> tests/test_convolve.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FloatRange`, `Opts`, and `assert_functions_similar`
[INFO] [stdout]   --> tests/test_convolve.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 | use utils::{assert_functions_similar, FloatRange, Opts};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v0`
[INFO] [stdout]   --> tests/test_float_derivate.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let v0 = v0.ident;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_v0`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_functions_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn assert_functions_similar<F1, F2>(f1: F1, f2: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Opts` is never used
[INFO] [stdout]  --> tests/utils.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Opts<'a> {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_function_and_derivative_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn assert_function_and_derivative_similar<F1, F2>(f: F1, df: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_functions_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn assert_functions_similar<F1, F2>(f1: F1, f2: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_series_to_file` is never used
[INFO] [stdout]    --> tests/utils.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn write_series_to_file(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_function_and_derivative_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn assert_function_and_derivative_similar<F1, F2>(f: F1, df: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> tests/table.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Table<F>
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> tests/table.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | / impl<F> Table<F>
[INFO] [stdout] 18 | | where
[INFO] [stdout] 19 | |     F: Copy + fmt::Display,
[INFO] [stdout]    | |___________________________- associated items in this implementation
[INFO] [stdout] 20 |   {
[INFO] [stdout] 21 |       pub fn new() -> Table<F> {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |       pub fn extend_col<T>(&mut self, col: &str, values: T)
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |       pub fn append_col(&mut self, col: &str, values: F) {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |       pub fn pad_col(&mut self, col: &str, value: F) {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |       pub fn to_csv(&self, path: &str) -> io::Result<()> {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |       pub fn assert_columns_have_same_lengths(&self) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |       fn validate_column_sizes(&self) -> io::Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_function_and_derivative_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn assert_function_and_derivative_similar<F1, F2>(f: F1, df: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `MaxRms` is never constructed
[INFO] [stdout]  --> tests/utils.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Opts<'a> {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     MaxRms(f32),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_functions_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn assert_functions_similar<F1, F2>(f1: F1, f2: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> tests/test_float_gradient_descent.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let [x, a, t, y, loss] = [x, a, t, y, loss].map(|expr| expr.ident);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> tests/table.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Table<F>
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> tests/table.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | / impl<F> Table<F>
[INFO] [stdout] 18 | | where
[INFO] [stdout] 19 | |     F: Copy + fmt::Display,
[INFO] [stdout]    | |___________________________- associated items in this implementation
[INFO] [stdout] 20 |   {
[INFO] [stdout] 21 |       pub fn new() -> Table<F> {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |       pub fn extend_col<T>(&mut self, col: &str, values: T)
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |       pub fn append_col(&mut self, col: &str, values: F) {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |       pub fn pad_col(&mut self, col: &str, value: F) {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |       pub fn to_csv(&self, path: &str) -> io::Result<()> {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |       pub fn assert_columns_have_same_lengths(&self) {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96 |       fn validate_column_sizes(&self) -> io::Result<()> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `MaxRms` is never constructed
[INFO] [stdout]  --> tests/utils.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Opts<'a> {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     MaxRms(f32),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_function_and_derivative_similar` is never used
[INFO] [stdout]   --> tests/utils.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn assert_function_and_derivative_similar<F1, F2>(f: F1, df: &mut F2, opts: &[Opts])
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/nar/syntax.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let a = a + a;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `conv2d_adjoin` is never used
[INFO] [stdout]   --> src/nar/conv.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn conv2d_adjoin<A>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/nar/conv.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 | struct BadShapeError(String);
[INFO] [stdout]    |        ------------- ^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `BadShapeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `V2Helper` is never used
[INFO] [stdout]    --> src/nar/conv.rs:104:7
[INFO] [stdout]     |
[INFO] [stdout] 104 | trait V2Helper {
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ShapeHelper` is never used
[INFO] [stdout]    --> src/nar/conv.rs:115:7
[INFO] [stdout]     |
[INFO] [stdout] 115 | trait ShapeHelper {
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shape2` is never used
[INFO] [stdout]    --> src/nar/conv.rs:250:8
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn shape2(r: usize, c: usize) -> nd::Ix2 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_arr_inc_f32` is never used
[INFO] [stdout]    --> src/nar/conv.rs:258:8
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn new_arr_inc_f32(nrows: usize, ncols: usize) -> nd::Array2<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `contains` is never used
[INFO] [stdout]   --> src/nar/conv_iter.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl V2 {
[INFO] [stdout]    | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn contains(&self, other: V2) -> Option<V2> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/float/syntax.rs:137:27
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat<'_>;
[INFO] [stdout]     |                                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/float/syntax.rs:141:27
[INFO] [stdout]     |
[INFO] [stdout] 141 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 141 |     fn as_const(self, eb: &ExprBuilder<f32, FloatOperAry1, FloatOperAry2>) -> ExprFloat<'_> {
[INFO] [stdout]     |                                                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.57s
[INFO] running `Command { std: "docker" "inspect" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae", kill_on_drop: false }`
[INFO] [stdout] 40d94647bec5ba6cb3a8d74e7a1d3faacd6eb670bf21cc7b43a97f4b808e69ae
