[INFO] cloning repository https://github.com/fudini/neurust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fudini/neurust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffudini%2Fneurust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffudini%2Fneurust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dfe883bb281a98eb0e28df1018ab944ed183ac0
[INFO] building fudini/neurust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffudini%2Fneurust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fudini/neurust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fudini/neurust
[INFO] finished tweaking git repo https://github.com/fudini/neurust
[INFO] tweaked toml for git repo https://github.com/fudini/neurust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fudini/neurust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e5fe96cc80e336f6e35342d5099f1cdb3128c1265cfbcfd6e1b9c7d03466ab5
[INFO] running `Command { std: "docker" "start" "-a" "3e5fe96cc80e336f6e35342d5099f1cdb3128c1265cfbcfd6e1b9c7d03466ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e5fe96cc80e336f6e35342d5099f1cdb3128c1265cfbcfd6e1b9c7d03466ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e5fe96cc80e336f6e35342d5099f1cdb3128c1265cfbcfd6e1b9c7d03466ab5", kill_on_drop: false }`
[INFO] [stdout] 3e5fe96cc80e336f6e35342d5099f1cdb3128c1265cfbcfd6e1b9c7d03466ab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19658c9df47a6a5cb4342916af14b128a84e32cc1f34d6c9eb2f6b2ade10ed6a
[INFO] running `Command { std: "docker" "start" "-a" "19658c9df47a6a5cb4342916af14b128a84e32cc1f34d6c9eb2f6b2ade10ed6a", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling libc v0.2.19
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling neurust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Neuron`
[INFO] [stdout]  --> src/main.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | use neural::{ NeuralNetwork, Neuron };
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `error` is never read
[INFO] [stdout]   --> src/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut error = 0.0;
[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: function `run_xor` is never used
[INFO] [stdout]   --> src/main.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn run_xor () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]   --> src/neural.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Data {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_layers`, `import`, and `export` are never used
[INFO] [stdout]    --> src/neural.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 98  | impl NeuralNetwork {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     pub fn with_layers(
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 180 |     pub fn import(data: Data) -> NeuralNetwork {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 198 |     pub fn export(&self) -> Data { 
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `magic` is never read
[INFO] [stdout]   --> src/mnist.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct MnistHeader {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 10 |     magic: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MnistHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `render_digit` is never used
[INFO] [stdout]    --> src/mnist.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn render_digit(pixels: &Vec<f64>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tanh_activation` is never used
[INFO] [stdout]   --> src/functions.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn tanh_activation(x: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tanh_derivative` is never used
[INFO] [stdout]   --> src/functions.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn tanh_derivative(o: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `TANH` is never used
[INFO] [stdout]   --> src/functions.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub static TANH: ActivationFn = (tanh_activation, tanh_derivative);
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnist.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     file.read_exact(&mut buffer);
[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] 34 |     let _ = file.read_exact(&mut buffer);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnist.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         images_reader.seek(SeekFrom::Start(16 + (i * image_size) as u64));
[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] 89 |         let _ = images_reader.seek(SeekFrom::Start(16 + (i * image_size) as u64));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnist.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         labels_reader.seek(SeekFrom::Start(8 + i as u64));
[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] 93 |         let _ = labels_reader.seek(SeekFrom::Start(8 + i as u64));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "19658c9df47a6a5cb4342916af14b128a84e32cc1f34d6c9eb2f6b2ade10ed6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19658c9df47a6a5cb4342916af14b128a84e32cc1f34d6c9eb2f6b2ade10ed6a", kill_on_drop: false }`
[INFO] [stdout] 19658c9df47a6a5cb4342916af14b128a84e32cc1f34d6c9eb2f6b2ade10ed6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c53af36578e2715fc62501e5c925cb361ba5230211f458949c8d37829e3ce41
[INFO] running `Command { std: "docker" "start" "-a" "0c53af36578e2715fc62501e5c925cb361ba5230211f458949c8d37829e3ce41", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling neurust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Neuron`
[INFO] [stdout]  --> src/main.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | use neural::{ NeuralNetwork, Neuron };
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `error` is never read
[INFO] [stdout]   --> src/main.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut error = 0.0;
[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: function `run_xor` is never used
[INFO] [stdout]   --> src/main.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn run_xor () {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]   --> src/neural.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Data {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `import` and `export` are never used
[INFO] [stdout]    --> src/neural.rs:180:12
[INFO] [stdout]     |
[INFO] [stdout] 98  | impl NeuralNetwork {
[INFO] [stdout]     | ------------------ associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 180 |     pub fn import(data: Data) -> NeuralNetwork {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 198 |     pub fn export(&self) -> Data { 
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `magic` is never read
[INFO] [stdout]   --> src/mnist.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct MnistHeader {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 10 |     magic: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MnistHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `render_digit` is never used
[INFO] [stdout]    --> src/mnist.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn render_digit(pixels: &Vec<f64>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tanh_activation` is never used
[INFO] [stdout]   --> src/functions.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn tanh_activation(x: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tanh_derivative` is never used
[INFO] [stdout]   --> src/functions.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn tanh_derivative(o: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `TANH` is never used
[INFO] [stdout]   --> src/functions.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub static TANH: ActivationFn = (tanh_activation, tanh_derivative);
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnist.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     file.read_exact(&mut buffer);
[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] 34 |     let _ = file.read_exact(&mut buffer);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnist.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         images_reader.seek(SeekFrom::Start(16 + (i * image_size) as u64));
[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] 89 |         let _ = images_reader.seek(SeekFrom::Start(16 + (i * image_size) as u64));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mnist.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         labels_reader.seek(SeekFrom::Start(8 + i as u64));
[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] 93 |         let _ = labels_reader.seek(SeekFrom::Start(8 + i as u64));
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "0c53af36578e2715fc62501e5c925cb361ba5230211f458949c8d37829e3ce41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c53af36578e2715fc62501e5c925cb361ba5230211f458949c8d37829e3ce41", kill_on_drop: false }`
[INFO] [stdout] 0c53af36578e2715fc62501e5c925cb361ba5230211f458949c8d37829e3ce41