[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] testing pingpong74/basic_neural_network against try#28f95933dc0727396c07b48d0a8cb5211b7fb472 for pr-154065-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpingpong74%2Fbasic_neural_network" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pingpong74/basic_neural_network on toolchain 28f95933dc0727396c07b48d0a8cb5211b7fb472
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "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" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1dc377c3a904310f3d3032f9fb88b3d0a65b73edeacf9633b4a58e87afe415b
[INFO] running `Command { std: "docker" "start" "-a" "a1dc377c3a904310f3d3032f9fb88b3d0a65b73edeacf9633b4a58e87afe415b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1dc377c3a904310f3d3032f9fb88b3d0a65b73edeacf9633b4a58e87afe415b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1dc377c3a904310f3d3032f9fb88b3d0a65b73edeacf9633b4a58e87afe415b", kill_on_drop: false }`
[INFO] [stdout] a1dc377c3a904310f3d3032f9fb88b3d0a65b73edeacf9633b4a58e87afe415b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ba17a2f9040a1c25b12eb114d5f1b3fd05bb43fddc602829c2ed309c241ba81
[INFO] running `Command { std: "docker" "start" "-a" "4ba17a2f9040a1c25b12eb114d5f1b3fd05bb43fddc602829c2ed309c241ba81", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling mnist v0.6.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.70s
[INFO] running `Command { std: "docker" "inspect" "4ba17a2f9040a1c25b12eb114d5f1b3fd05bb43fddc602829c2ed309c241ba81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ba17a2f9040a1c25b12eb114d5f1b3fd05bb43fddc602829c2ed309c241ba81", kill_on_drop: false }`
[INFO] [stdout] 4ba17a2f9040a1c25b12eb114d5f1b3fd05bb43fddc602829c2ed309c241ba81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11b103d358338be441f4a86426ad088e6cedb63fb1e84e282755680985da0daf
[INFO] running `Command { std: "docker" "start" "-a" "11b103d358338be441f4a86426ad088e6cedb63fb1e84e282755680985da0daf", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "11b103d358338be441f4a86426ad088e6cedb63fb1e84e282755680985da0daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11b103d358338be441f4a86426ad088e6cedb63fb1e84e282755680985da0daf", kill_on_drop: false }`
[INFO] [stdout] 11b103d358338be441f4a86426ad088e6cedb63fb1e84e282755680985da0daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+28f95933dc0727396c07b48d0a8cb5211b7fb472" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0fb1b68a15d6fbe7be3b355abc3a89adc14f94cd1a6c6438d166c9176edd1382
[INFO] running `Command { std: "docker" "start" "-a" "0fb1b68a15d6fbe7be3b355abc3a89adc14f94cd1a6c6438d166c9176edd1382", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stdout] 
[INFO] [stderr]   --> src/network.rs:85:27
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 85 |     pub fn _train(&mut self, input: &Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expected`
[INFO] [stderr]   --> src/network.rs:85:50
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn _train(&mut self, input: &Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stderr]    |                                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stderr] 
[INFO] [stderr] warning: method `back_prop` is never used
[INFO] [stderr]   --> src/network.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl Network {
[INFO] [stderr]    | ------------ method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 91 |     pub fn back_prop(&mut self, outputs: Vec<Vec<f64>>, expected: Vec<Vec<f64>>){
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `basic_neural_network` (bin "basic_neural_network" test) generated 3 warnings (run `cargo fix --bin "basic_neural_network" -p basic_neural_network --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/basic_neural_network-cdf401688c125c17)
[INFO] running `Command { std: "docker" "inspect" "0fb1b68a15d6fbe7be3b355abc3a89adc14f94cd1a6c6438d166c9176edd1382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb1b68a15d6fbe7be3b355abc3a89adc14f94cd1a6c6438d166c9176edd1382", kill_on_drop: false }`
[INFO] [stdout] 0fb1b68a15d6fbe7be3b355abc3a89adc14f94cd1a6c6438d166c9176edd1382
