[INFO] cloning repository https://github.com/jamesbut/rustynet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jamesbut/rustynet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesbut%2Frustynet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesbut%2Frustynet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76e10a5a94ab938f9bb885e055378dfecb464c6f
[INFO] checking jamesbut/rustynet against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesbut%2Frustynet" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jamesbut/rustynet on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jamesbut/rustynet
[INFO] finished tweaking git repo https://github.com/jamesbut/rustynet
[INFO] tweaked toml for git repo https://github.com/jamesbut/rustynet written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jamesbut/rustynet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 861ed0bbf72dcb4045cf23dbc55ce73ac7638970281624cdd2fb0103f20f5da8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "861ed0bbf72dcb4045cf23dbc55ce73ac7638970281624cdd2fb0103f20f5da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "861ed0bbf72dcb4045cf23dbc55ce73ac7638970281624cdd2fb0103f20f5da8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "861ed0bbf72dcb4045cf23dbc55ce73ac7638970281624cdd2fb0103f20f5da8", kill_on_drop: false }`
[INFO] [stdout] 861ed0bbf72dcb4045cf23dbc55ce73ac7638970281624cdd2fb0103f20f5da8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47d09b1d2901920ce75b2d751d583eeca2d628a4c89f26eb3c6e91adb8fb1e97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "47d09b1d2901920ce75b2d751d583eeca2d628a4c89f26eb3c6e91adb8fb1e97", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rustynet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Distribution`
[INFO] [stdout]  --> src/neural_net.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::distributions::{Normal, Distribution};
[INFO] [stdout]   |                                   ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optimiser::gradient_descent`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use optimiser::gradient_descent;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Distribution`
[INFO] [stdout]  --> src/neural_net.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::distributions::{Normal, Distribution};
[INFO] [stdout]   |                                   ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `optimiser::gradient_descent`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use optimiser::gradient_descent;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `normal`
[INFO] [stdout]   --> src/neural_net.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let normal = Normal::new(0., 1.);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_normal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loss_grads`
[INFO] [stdout]    --> src/neural_net.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn backward(&mut self, loss_grads: &Vec<f64>) {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loss_grads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_w_weight`
[INFO] [stdout]   --> src/neural_net.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new_w_weight(weights: Vec<f64>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]   --> src/neural_net.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn backward(&mut self, output_grad: f64) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `zero_grad`
[INFO] [stdout]   --> src/neural_net.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn zero_grad(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]    --> src/neural_net.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn backward(&mut self, output_grads: &Vec<f64>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `zero_grad`
[INFO] [stdout]    --> src/neural_net.rs:148:12
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn zero_grad(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]   --> src/activation_functions.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn backward(&mut self, output_grad: f64) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gradient_descent`
[INFO] [stdout]  --> src/optimiser.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn gradient_descent(layer: &mut Layer) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `normal`
[INFO] [stdout]   --> src/neural_net.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let normal = Normal::new(0., 1.);
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_normal`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loss_grads`
[INFO] [stdout]    --> src/neural_net.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub fn backward(&mut self, loss_grads: &Vec<f64>) {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loss_grads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_w_weight`
[INFO] [stdout]   --> src/neural_net.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new_w_weight(weights: Vec<f64>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]   --> src/neural_net.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn backward(&mut self, output_grad: f64) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `zero_grad`
[INFO] [stdout]   --> src/neural_net.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn zero_grad(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]    --> src/neural_net.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn backward(&mut self, output_grads: &Vec<f64>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `zero_grad`
[INFO] [stdout]    --> src/neural_net.rs:148:12
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn zero_grad(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]   --> src/activation_functions.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn backward(&mut self, output_grad: f64) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gradient_descent`
[INFO] [stdout]  --> src/optimiser.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn gradient_descent(layer: &mut Layer) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.42s
[INFO] running `Command { std: "docker" "inspect" "47d09b1d2901920ce75b2d751d583eeca2d628a4c89f26eb3c6e91adb8fb1e97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47d09b1d2901920ce75b2d751d583eeca2d628a4c89f26eb3c6e91adb8fb1e97", kill_on_drop: false }`
[INFO] [stdout] 47d09b1d2901920ce75b2d751d583eeca2d628a4c89f26eb3c6e91adb8fb1e97