[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] 6faad5192810b066a5ab25e391171a8f36c9c730
[INFO] checking jamesbut/rustynet against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamesbut%2Frustynet" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jamesbut/rustynet on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-12/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 433bf4053727fd903dc36980f5db8c0058f250d52610a57abd985d593c57a800
[INFO] running `Command { std: "docker" "start" "-a" "433bf4053727fd903dc36980f5db8c0058f250d52610a57abd985d593c57a800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "433bf4053727fd903dc36980f5db8c0058f250d52610a57abd985d593c57a800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433bf4053727fd903dc36980f5db8c0058f250d52610a57abd985d593c57a800", kill_on_drop: false }`
[INFO] [stdout] 433bf4053727fd903dc36980f5db8c0058f250d52610a57abd985d593c57a800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1630bfd57b1dc6694ff3c3793be5a03c7689856475fe5785fe156f98a5d110d6
[INFO] running `Command { std: "docker" "start" "-a" "1630bfd57b1dc6694ff3c3793be5a03c7689856475fe5785fe156f98a5d110d6", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rustynet v0.1.0 (/opt/rustwide/workdir)
[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: 1 warning 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.83s
[INFO] running `Command { std: "docker" "inspect" "1630bfd57b1dc6694ff3c3793be5a03c7689856475fe5785fe156f98a5d110d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1630bfd57b1dc6694ff3c3793be5a03c7689856475fe5785fe156f98a5d110d6", kill_on_drop: false }`
[INFO] [stdout] 1630bfd57b1dc6694ff3c3793be5a03c7689856475fe5785fe156f98a5d110d6