[INFO] cloning repository https://github.com/pingpong74/basic_neural_network
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pingpong74/basic_neural_network" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingpong74%2Fbasic_neural_network", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingpong74%2Fbasic_neural_network'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8a1aa7359647b2ac0b36c4c6fe27a36272cb1a9
[INFO] checking pingpong74/basic_neural_network against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingpong74%2Fbasic_neural_network" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pingpong74/basic_neural_network
[INFO] finished tweaking git repo https://github.com/pingpong74/basic_neural_network
[INFO] tweaked toml for git repo https://github.com/pingpong74/basic_neural_network written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pingpong74/basic_neural_network on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pingpong74/basic_neural_network 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mnist v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0818602569328522e7aec135bc2b175633c8f9dc3c7e9f683fbf7a58fdfedb4
[INFO] running `Command { std: "docker" "start" "-a" "f0818602569328522e7aec135bc2b175633c8f9dc3c7e9f683fbf7a58fdfedb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0818602569328522e7aec135bc2b175633c8f9dc3c7e9f683fbf7a58fdfedb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0818602569328522e7aec135bc2b175633c8f9dc3c7e9f683fbf7a58fdfedb4", kill_on_drop: false }`
[INFO] [stdout] f0818602569328522e7aec135bc2b175633c8f9dc3c7e9f683fbf7a58fdfedb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4db3715efffec7e56ba7a916b1b8af8dba8469a930f6da2fb12091670f0523c7
[INFO] running `Command { std: "docker" "start" "-a" "4db3715efffec7e56ba7a916b1b8af8dba8469a930f6da2fb12091670f0523c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking mnist v0.6.0
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking basic_neural_network v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/network.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn _train(&mut self, input: &Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]   --> src/network.rs:85:50
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn _train(&mut self, input: &Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout]    |                                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `back_prop` is never used
[INFO] [stdout]   --> src/network.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Network {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn back_prop(&mut self, outputs: Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/network.rs:85:27
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn _train(&mut self, input: &Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]   --> src/network.rs:85:50
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn _train(&mut self, input: &Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout]    |                                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `back_prop` is never used
[INFO] [stdout]   --> src/network.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Network {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn back_prop(&mut self, outputs: Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "4db3715efffec7e56ba7a916b1b8af8dba8469a930f6da2fb12091670f0523c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4db3715efffec7e56ba7a916b1b8af8dba8469a930f6da2fb12091670f0523c7", kill_on_drop: false }`
[INFO] [stdout] 4db3715efffec7e56ba7a916b1b8af8dba8469a930f6da2fb12091670f0523c7