[INFO] cloning repository https://github.com/sbbddz/ml-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sbbddz/ml-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbbddz%2Fml-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsbbddz%2Fml-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba40dfbd56473fb23da99382c242e8ad27ead545
[INFO] building sbbddz/ml-rust 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%2Fsbbddz%2Fml-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sbbddz/ml-rust 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/sbbddz/ml-rust
[INFO] finished tweaking git repo https://github.com/sbbddz/ml-rust
[INFO] tweaked toml for git repo https://github.com/sbbddz/ml-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sbbddz/ml-rust 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 75fbd29c5c30bbc458bd46164c36632b7cb4f08e493017e0e803d20de1747f2a
[INFO] running `Command { std: "docker" "start" "-a" "75fbd29c5c30bbc458bd46164c36632b7cb4f08e493017e0e803d20de1747f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75fbd29c5c30bbc458bd46164c36632b7cb4f08e493017e0e803d20de1747f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75fbd29c5c30bbc458bd46164c36632b7cb4f08e493017e0e803d20de1747f2a", kill_on_drop: false }`
[INFO] [stdout] 75fbd29c5c30bbc458bd46164c36632b7cb4f08e493017e0e803d20de1747f2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ea526134273c9ea4e700bfc75cd263ad12af5e1d623d8c43e6c56ce97f7ed2a0
[INFO] running `Command { std: "docker" "start" "-a" "ea526134273c9ea4e700bfc75cd263ad12af5e1d623d8c43e6c56ce97f7ed2a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling ml_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `bias`
[INFO] [stdout]  --> src/double.rs:7:56
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn loss_fn(input_data: &Vec<(i32, i32)>, model: Model, bias: f32) -> f32 {
[INFO] [stdout]   |                                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_bias`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Model` is never used
[INFO] [stdout]  --> src/boolean_gates.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Model = (f32, f32, f32);
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]  --> src/boolean_gates.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn sigmoid(value: f32) -> f32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loss_fn` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn loss_fn(input_data: &Vec<(i32, i32, i32)>, model: Model) -> f32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_random_float` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_random_float() -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `train_input` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn train_input(train_set: &Vec<(i32, i32, i32)>) -> Model {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_result` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn print_result(model: Model) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_random_float` is never used
[INFO] [stdout]  --> src/double.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn get_random_float() -> f32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Model` is never used
[INFO] [stdout]  --> src/double.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Model = f32;
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loss_fn` is never used
[INFO] [stdout]  --> src/double.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn loss_fn(input_data: &Vec<(i32, i32)>, model: Model, bias: f32) -> f32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]   --> src/double.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn double() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_literal` is never used
[INFO] [stdout]   --> src/matrix.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Matrix {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn from_literal(vec: Vec<f32>, rows: usize, cols: usize) -> Matrix {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `train` is never used
[INFO] [stdout]  --> src/model.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Model<'a> {
[INFO] [stdout]   |           ----- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn train(&mut self, training_input: &Matrix, training_output: &Matrix) -> Option<()>;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.89s
[INFO] running `Command { std: "docker" "inspect" "ea526134273c9ea4e700bfc75cd263ad12af5e1d623d8c43e6c56ce97f7ed2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea526134273c9ea4e700bfc75cd263ad12af5e1d623d8c43e6c56ce97f7ed2a0", kill_on_drop: false }`
[INFO] [stdout] ea526134273c9ea4e700bfc75cd263ad12af5e1d623d8c43e6c56ce97f7ed2a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e4057c3b26033cd896596bae2d46d9646f8ec6cf90ff0ab27f21ed89c62f8bb7
[INFO] running `Command { std: "docker" "start" "-a" "e4057c3b26033cd896596bae2d46d9646f8ec6cf90ff0ab27f21ed89c62f8bb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling ml_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `bias`
[INFO] [stdout]  --> src/double.rs:7:56
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn loss_fn(input_data: &Vec<(i32, i32)>, model: Model, bias: f32) -> f32 {
[INFO] [stdout]   |                                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_bias`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Model` is never used
[INFO] [stdout]  --> src/boolean_gates.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Model = (f32, f32, f32);
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]  --> src/boolean_gates.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn sigmoid(value: f32) -> f32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loss_fn` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn loss_fn(input_data: &Vec<(i32, i32, i32)>, model: Model) -> f32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_random_float` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_random_float() -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `train_input` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn train_input(train_set: &Vec<(i32, i32, i32)>) -> Model {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_result` is never used
[INFO] [stdout]   --> src/boolean_gates.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn print_result(model: Model) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_random_float` is never used
[INFO] [stdout]  --> src/double.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn get_random_float() -> f32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Model` is never used
[INFO] [stdout]  --> src/double.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Model = f32;
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loss_fn` is never used
[INFO] [stdout]  --> src/double.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn loss_fn(input_data: &Vec<(i32, i32)>, model: Model, bias: f32) -> f32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `double` is never used
[INFO] [stdout]   --> src/double.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn double() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "e4057c3b26033cd896596bae2d46d9646f8ec6cf90ff0ab27f21ed89c62f8bb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4057c3b26033cd896596bae2d46d9646f8ec6cf90ff0ab27f21ed89c62f8bb7", kill_on_drop: false }`
[INFO] [stdout] e4057c3b26033cd896596bae2d46d9646f8ec6cf90ff0ab27f21ed89c62f8bb7