[INFO] cloning repository https://github.com/irfanzainudin/karat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/irfanzainudin/karat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7746ac9bf1ea213c0d3a67729c9e31baa0d8191
[INFO] checking irfanzainudin/karat against try#78c81ee3917a99dcff6e2e6822800f0492c415c3 for pr-148967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/irfanzainudin/karat
[INFO] finished tweaking git repo https://github.com/irfanzainudin/karat
[INFO] tweaked toml for git repo https://github.com/irfanzainudin/karat written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/irfanzainudin/karat on toolchain 78c81ee3917a99dcff6e2e6822800f0492c415c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/irfanzainudin/karat 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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68445741dd2f8ee62b879797c1a45ba4418cb6d63cd702a815d9be3b7930f14c
[INFO] running `Command { std: "docker" "start" "-a" "68445741dd2f8ee62b879797c1a45ba4418cb6d63cd702a815d9be3b7930f14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68445741dd2f8ee62b879797c1a45ba4418cb6d63cd702a815d9be3b7930f14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68445741dd2f8ee62b879797c1a45ba4418cb6d63cd702a815d9be3b7930f14c", kill_on_drop: false }`
[INFO] [stdout] 68445741dd2f8ee62b879797c1a45ba4418cb6d63cd702a815d9be3b7930f14c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db7c15a50e070b000be85f531247e8c2c1e5bdde53408bc5d229622b16505a7a
[INFO] running `Command { std: "docker" "start" "-a" "db7c15a50e070b000be85f531247e8c2c1e5bdde53408bc5d229622b16505a7a", kill_on_drop: false }`
[INFO] [stderr]     Checking karat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `singleNeuron`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let singleNeuron = Neuron{
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_singleNeuron`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `singleNeuron`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let singleNeuron = Neuron{
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_singleNeuron`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `bias`, `weights`, `inputs`, and `output` are never read
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Neuron {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 3 |     bias: f64,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     weights: Vec<f64>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     inputs: Vec<f64>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     output: f64
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `singleNeuron` should have a snake case name
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let singleNeuron = Neuron{
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `single_neuron`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `bias`, `weights`, `inputs`, and `output` are never read
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Neuron {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 3 |     bias: f64,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     weights: Vec<f64>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 5 |     inputs: Vec<f64>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 6 |     output: f64
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `singleNeuron` should have a snake case name
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let singleNeuron = Neuron{
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `single_neuron`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "db7c15a50e070b000be85f531247e8c2c1e5bdde53408bc5d229622b16505a7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db7c15a50e070b000be85f531247e8c2c1e5bdde53408bc5d229622b16505a7a", kill_on_drop: false }`
[INFO] [stdout] db7c15a50e070b000be85f531247e8c2c1e5bdde53408bc5d229622b16505a7a