[INFO] cloning repository https://github.com/rust-pgrn/neural_network_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-pgrn/neural_network_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-pgrn%2Fneural_network_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-pgrn%2Fneural_network_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51ea1f14fe1dd89616b9f291c2fd3361d186b4d5
[INFO] building rust-pgrn/neural_network_tutorial 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%2Frust-pgrn%2Fneural_network_tutorial" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-pgrn/neural_network_tutorial 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/rust-pgrn/neural_network_tutorial
[INFO] finished tweaking git repo https://github.com/rust-pgrn/neural_network_tutorial
[INFO] tweaked toml for git repo https://github.com/rust-pgrn/neural_network_tutorial written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-pgrn/neural_network_tutorial 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a45d95f8be2c6b3fac38129d807d73fd6bef067c127894a8b51da7b39c446151
[INFO] running `Command { std: "docker" "start" "-a" "a45d95f8be2c6b3fac38129d807d73fd6bef067c127894a8b51da7b39c446151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a45d95f8be2c6b3fac38129d807d73fd6bef067c127894a8b51da7b39c446151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a45d95f8be2c6b3fac38129d807d73fd6bef067c127894a8b51da7b39c446151", kill_on_drop: false }`
[INFO] [stdout] a45d95f8be2c6b3fac38129d807d73fd6bef067c127894a8b51da7b39c446151
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 4d608aad0075196243bac0ccfbf03d1af08dab6bf7778880e450e74ad99111e8
[INFO] running `Command { std: "docker" "start" "-a" "4d608aad0075196243bac0ccfbf03d1af08dab6bf7778880e450e74ad99111e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling neural_networks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max_by`
[INFO] [stdout]  --> src/activation.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::max_by;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::activation`
[INFO] [stdout]  --> src/./data_handling/data_point.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::activation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::activation`
[INFO] [stdout]  --> src/layer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::activation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/neural_network.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     data_point::{self, DataPoint},
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/neural_network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/layer.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for i in 0..num_nodes_out {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/layer.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |             for j in 0..num_nodes_out {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for point in &training_data {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `label` is never read
[INFO] [stdout]  --> src/./data_handling/data_point.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct DataPoint {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     pub label: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `DataPoint` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `classify` is never used
[INFO] [stdout]   --> src/neural_network.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl NeuralNetwork {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn classify(&self, inputs: Vec<f64>) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.35s
[INFO] running `Command { std: "docker" "inspect" "4d608aad0075196243bac0ccfbf03d1af08dab6bf7778880e450e74ad99111e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d608aad0075196243bac0ccfbf03d1af08dab6bf7778880e450e74ad99111e8", kill_on_drop: false }`
[INFO] [stdout] 4d608aad0075196243bac0ccfbf03d1af08dab6bf7778880e450e74ad99111e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 557c84047b5feca29fdc189dbec48f9095026e39d9162b7c31c7ead896b7dbc9
[INFO] running `Command { std: "docker" "start" "-a" "557c84047b5feca29fdc189dbec48f9095026e39d9162b7c31c7ead896b7dbc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling neural_networks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max_by`
[INFO] [stdout]  --> src/activation.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::max_by;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::activation`
[INFO] [stdout]  --> src/./data_handling/data_point.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::activation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::activation`
[INFO] [stdout]  --> src/layer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::activation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/neural_network.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     data_point::{self, DataPoint},
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/neural_network.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/layer.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for i in 0..num_nodes_out {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/layer.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |             for j in 0..num_nodes_out {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for point in &training_data {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `label` is never read
[INFO] [stdout]  --> src/./data_handling/data_point.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct DataPoint {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     pub label: usize,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `DataPoint` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `classify` is never used
[INFO] [stdout]   --> src/neural_network.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl NeuralNetwork {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn classify(&self, inputs: Vec<f64>) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "557c84047b5feca29fdc189dbec48f9095026e39d9162b7c31c7ead896b7dbc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "557c84047b5feca29fdc189dbec48f9095026e39d9162b7c31c7ead896b7dbc9", kill_on_drop: false }`
[INFO] [stdout] 557c84047b5feca29fdc189dbec48f9095026e39d9162b7c31c7ead896b7dbc9