Dec 19 16:45:14.472 INFO checking fudini/neurust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 16:45:14.473 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/fudini/neurust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:45:14.929 INFO [stdout] 61f8c1a17265f8069584e66d4420536af5d4870132e16d32c72fbd41b3d3955e
Dec 19 16:45:14.934 INFO running `"docker" "start" "-a" "61f8c1a17265f8069584e66d4420536af5d4870132e16d32c72fbd41b3d3955e"`
Dec 19 16:45:16.241 INFO [stderr]     Checking neurust v0.1.0 (/opt/crater/workdir)
Dec 19 16:45:17.092 INFO [stderr] warning: unused import: `Neuron`
Dec 19 16:45:17.092 INFO [stderr]  --> src/main.rs:9:30
Dec 19 16:45:17.092 INFO [stderr]   |
Dec 19 16:45:17.092 INFO [stderr] 9 | use neural::{ NeuralNetwork, Neuron };
Dec 19 16:45:17.092 INFO [stderr]   |                              ^^^^^^
Dec 19 16:45:17.092 INFO [stderr]   |
Dec 19 16:45:17.092 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:45:17.092 INFO [stderr] 
Dec 19 16:45:17.163 INFO [stderr] warning: unused import: `Neuron`
Dec 19 16:45:17.164 INFO [stderr]  --> src/main.rs:9:30
Dec 19 16:45:17.164 INFO [stderr]   |
Dec 19 16:45:17.164 INFO [stderr] 9 | use neural::{ NeuralNetwork, Neuron };
Dec 19 16:45:17.165 INFO [stderr]   |                              ^^^^^^
Dec 19 16:45:17.165 INFO [stderr]   |
Dec 19 16:45:17.165 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 16:45:17.165 INFO [stderr] 
Dec 19 16:45:17.268 INFO [stderr] warning: value assigned to `error` is never read
Dec 19 16:45:17.268 INFO [stderr]   --> src/main.rs:36:13
Dec 19 16:45:17.268 INFO [stderr]    |
Dec 19 16:45:17.268 INFO [stderr] 36 |     let mut error = 0.0;
Dec 19 16:45:17.268 INFO [stderr]    |             ^^^^^
Dec 19 16:45:17.268 INFO [stderr]    |
Dec 19 16:45:17.268 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 16:45:17.268 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 16:45:17.268 INFO [stderr] 
Dec 19 16:45:17.336 INFO [stderr] warning: struct is never constructed: `Data`
Dec 19 16:45:17.336 INFO [stderr]   --> src/neural.rs:36:1
Dec 19 16:45:17.336 INFO [stderr]    |
Dec 19 16:45:17.336 INFO [stderr] 36 | pub struct Data {
Dec 19 16:45:17.336 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 19 16:45:17.336 INFO [stderr]    |
Dec 19 16:45:17.336 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 16:45:17.336 INFO [stderr] 
Dec 19 16:45:17.336 INFO [stderr] warning: method is never used: `import`
Dec 19 16:45:17.336 INFO [stderr]    --> src/neural.rs:180:5
Dec 19 16:45:17.337 INFO [stderr]     |
Dec 19 16:45:17.337 INFO [stderr] 180 |     pub fn import(data: Data) -> NeuralNetwork {
Dec 19 16:45:17.337 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.337 INFO [stderr] warning: method is never used: `export`
Dec 19 16:45:17.337 INFO [stderr]    --> src/neural.rs:198:5
Dec 19 16:45:17.337 INFO [stderr]     |
Dec 19 16:45:17.337 INFO [stderr] 198 |     pub fn export(&self) -> Data { 
Dec 19 16:45:17.337 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.337 INFO [stderr] warning: function is never used: `render_digit`
Dec 19 16:45:17.337 INFO [stderr]    --> src/mnist.rs:136:1
Dec 19 16:45:17.337 INFO [stderr]     |
Dec 19 16:45:17.337 INFO [stderr] 136 | pub fn render_digit(pixels: &Vec<f64>) {
Dec 19 16:45:17.337 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.337 INFO [stderr] warning: function is never used: `tanh_activation`
Dec 19 16:45:17.337 INFO [stderr]   --> src/functions.rs:16:5
Dec 19 16:45:17.337 INFO [stderr]    |
Dec 19 16:45:17.337 INFO [stderr] 16 |     fn tanh_activation(x: f64) -> f64 {
Dec 19 16:45:17.337 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.337 INFO [stderr] warning: function is never used: `tanh_derivative`
Dec 19 16:45:17.337 INFO [stderr]   --> src/functions.rs:20:5
Dec 19 16:45:17.337 INFO [stderr]    |
Dec 19 16:45:17.337 INFO [stderr] 20 |     fn tanh_derivative(o: f64) -> f64 {
Dec 19 16:45:17.337 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.337 INFO [stderr] warning: static item is never used: `TANH`
Dec 19 16:45:17.337 INFO [stderr]   --> src/functions.rs:26:5
Dec 19 16:45:17.337 INFO [stderr]    |
Dec 19 16:45:17.337 INFO [stderr] 26 |     pub static TANH: ActivationFn = (tanh_activation, tanh_derivative);
Dec 19 16:45:17.337 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.337 INFO [stderr] warning: function is never used: `run_xor`
Dec 19 16:45:17.337 INFO [stderr]   --> src/main.rs:88:1
Dec 19 16:45:17.337 INFO [stderr]    |
Dec 19 16:45:17.337 INFO [stderr] 88 | fn run_xor () {
Dec 19 16:45:17.337 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 19 16:45:17.337 INFO [stderr] 
Dec 19 16:45:17.347 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 16:45:17.347 INFO [stderr]   --> src/mnist.rs:34:5
Dec 19 16:45:17.347 INFO [stderr]    |
Dec 19 16:45:17.347 INFO [stderr] 34 |     file.read_exact(&mut buffer);
Dec 19 16:45:17.347 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.347 INFO [stderr]    |
Dec 19 16:45:17.347 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 16:45:17.347 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 16:45:17.347 INFO [stderr] 
Dec 19 16:45:17.347 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 16:45:17.347 INFO [stderr]   --> src/mnist.rs:89:9
Dec 19 16:45:17.347 INFO [stderr]    |
Dec 19 16:45:17.347 INFO [stderr] 89 |         images_reader.seek(SeekFrom::Start(16 + (i * image_size) as u64));
Dec 19 16:45:17.347 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.347 INFO [stderr]    |
Dec 19 16:45:17.347 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 16:45:17.347 INFO [stderr] 
Dec 19 16:45:17.347 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 16:45:17.347 INFO [stderr]   --> src/mnist.rs:93:9
Dec 19 16:45:17.347 INFO [stderr]    |
Dec 19 16:45:17.347 INFO [stderr] 93 |         labels_reader.seek(SeekFrom::Start(8 + i as u64));
Dec 19 16:45:17.347 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.347 INFO [stderr]    |
Dec 19 16:45:17.347 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 16:45:17.347 INFO [stderr] 
Dec 19 16:45:17.478 INFO [stderr] warning: value assigned to `error` is never read
Dec 19 16:45:17.478 INFO [stderr]   --> src/main.rs:36:13
Dec 19 16:45:17.478 INFO [stderr]    |
Dec 19 16:45:17.478 INFO [stderr] 36 |     let mut error = 0.0;
Dec 19 16:45:17.478 INFO [stderr]    |             ^^^^^
Dec 19 16:45:17.478 INFO [stderr]    |
Dec 19 16:45:17.478 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 16:45:17.478 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 16:45:17.478 INFO [stderr] 
Dec 19 16:45:17.552 INFO [stderr] warning: struct is never constructed: `Data`
Dec 19 16:45:17.575 INFO [stderr]   --> src/neural.rs:36:1
Dec 19 16:45:17.575 INFO [stderr]    |
Dec 19 16:45:17.575 INFO [stderr] 36 | pub struct Data {
Dec 19 16:45:17.575 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 19 16:45:17.575 INFO [stderr]    |
Dec 19 16:45:17.575 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 16:45:17.575 INFO [stderr] 
Dec 19 16:45:17.575 INFO [stderr] warning: method is never used: `with_layers`
Dec 19 16:45:17.575 INFO [stderr]    --> src/neural.rs:128:5
Dec 19 16:45:17.575 INFO [stderr]     |
Dec 19 16:45:17.575 INFO [stderr] 128 | /     pub fn with_layers(
Dec 19 16:45:17.575 INFO [stderr] 129 | |             layers: Vec<Vec<RefCell<Neuron>>>,
Dec 19 16:45:17.575 INFO [stderr] 130 | |             learning_rate: f64,
Dec 19 16:45:17.575 INFO [stderr] 131 | |             activation_fn: ActivationFn,
Dec 19 16:45:17.575 INFO [stderr] ...   |
Dec 19 16:45:17.575 INFO [stderr] 144 | |         }
Dec 19 16:45:17.575 INFO [stderr] 145 | |     }
Dec 19 16:45:17.575 INFO [stderr]     | |_____^
Dec 19 16:45:17.575 INFO [stderr] 
Dec 19 16:45:17.575 INFO [stderr] warning: method is never used: `import`
Dec 19 16:45:17.575 INFO [stderr]    --> src/neural.rs:180:5
Dec 19 16:45:17.575 INFO [stderr]     |
Dec 19 16:45:17.575 INFO [stderr] 180 |     pub fn import(data: Data) -> NeuralNetwork {
Dec 19 16:45:17.575 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.575 INFO [stderr] 
Dec 19 16:45:17.575 INFO [stderr] warning: method is never used: `export`
Dec 19 16:45:17.575 INFO [stderr]    --> src/neural.rs:198:5
Dec 19 16:45:17.576 INFO [stderr]     |
Dec 19 16:45:17.576 INFO [stderr] 198 |     pub fn export(&self) -> Data { 
Dec 19 16:45:17.576 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: function is never used: `render_digit`
Dec 19 16:45:17.576 INFO [stderr]    --> src/mnist.rs:136:1
Dec 19 16:45:17.576 INFO [stderr]     |
Dec 19 16:45:17.576 INFO [stderr] 136 | pub fn render_digit(pixels: &Vec<f64>) {
Dec 19 16:45:17.576 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: function is never used: `tanh_activation`
Dec 19 16:45:17.576 INFO [stderr]   --> src/functions.rs:16:5
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 16 |     fn tanh_activation(x: f64) -> f64 {
Dec 19 16:45:17.576 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: function is never used: `tanh_derivative`
Dec 19 16:45:17.576 INFO [stderr]   --> src/functions.rs:20:5
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 20 |     fn tanh_derivative(o: f64) -> f64 {
Dec 19 16:45:17.576 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: static item is never used: `TANH`
Dec 19 16:45:17.576 INFO [stderr]   --> src/functions.rs:26:5
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 26 |     pub static TANH: ActivationFn = (tanh_activation, tanh_derivative);
Dec 19 16:45:17.576 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: function is never used: `run_xor`
Dec 19 16:45:17.576 INFO [stderr]   --> src/main.rs:88:1
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 88 | fn run_xor () {
Dec 19 16:45:17.576 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 16:45:17.576 INFO [stderr]   --> src/mnist.rs:34:5
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 34 |     file.read_exact(&mut buffer);
Dec 19 16:45:17.576 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 16:45:17.576 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 16:45:17.576 INFO [stderr]   --> src/mnist.rs:89:9
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 89 |         images_reader.seek(SeekFrom::Start(16 + (i * image_size) as u64));
Dec 19 16:45:17.576 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.576 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 16:45:17.576 INFO [stderr]   --> src/mnist.rs:93:9
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr] 93 |         labels_reader.seek(SeekFrom::Start(8 + i as u64));
Dec 19 16:45:17.576 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 16:45:17.576 INFO [stderr]    |
Dec 19 16:45:17.576 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 16:45:17.576 INFO [stderr] 
Dec 19 16:45:17.585 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
Dec 19 16:45:18.388 INFO running `"docker" "inspect" "61f8c1a17265f8069584e66d4420536af5d4870132e16d32c72fbd41b3d3955e"`
Dec 19 16:45:18.732 INFO running `"docker" "rm" "-f" "61f8c1a17265f8069584e66d4420536af5d4870132e16d32c72fbd41b3d3955e"`
Dec 19 16:45:18.948 INFO [stdout] 61f8c1a17265f8069584e66d4420536af5d4870132e16d32c72fbd41b3d3955e