[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] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat/branches/: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[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] building irfanzainudin/karat against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-3-tc2/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'
[INFO] building irfanzainudin/karat against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: Unable to create '/workspace/builds/worker-3-tc2/source/.git/refs/remotes/origin/HEAD.lock': No such file or directory
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD
[INFO] building irfanzainudin/karat against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Firfanzainudin%2Fkarat" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/irfanzainudin/karat on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-3-tc2/source/Cargo.toml
[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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 434e58c25902c30fdde326d896c270404a72403695422bd7b42b84c14eaafe39
[INFO] running `Command { std: "docker" "start" "-a" "434e58c25902c30fdde326d896c270404a72403695422bd7b42b84c14eaafe39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "434e58c25902c30fdde326d896c270404a72403695422bd7b42b84c14eaafe39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "434e58c25902c30fdde326d896c270404a72403695422bd7b42b84c14eaafe39", kill_on_drop: false }`
[INFO] [stdout] 434e58c25902c30fdde326d896c270404a72403695422bd7b42b84c14eaafe39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79f3a555c50aacda73727aa94361072144836590500908507ec19e8818f9d966
[INFO] running `Command { std: "docker" "start" "-a" "79f3a555c50aacda73727aa94361072144836590500908507ec19e8818f9d966", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` 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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "79f3a555c50aacda73727aa94361072144836590500908507ec19e8818f9d966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f3a555c50aacda73727aa94361072144836590500908507ec19e8818f9d966", kill_on_drop: false }`
[INFO] [stdout] 79f3a555c50aacda73727aa94361072144836590500908507ec19e8818f9d966
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a64aaf31c9ef6e5ad32362360717d36b9d4b337e9f61aaa845e0aebd9729302
[INFO] running `Command { std: "docker" "start" "-a" "5a64aaf31c9ef6e5ad32362360717d36b9d4b337e9f61aaa845e0aebd9729302", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` 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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "5a64aaf31c9ef6e5ad32362360717d36b9d4b337e9f61aaa845e0aebd9729302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a64aaf31c9ef6e5ad32362360717d36b9d4b337e9f61aaa845e0aebd9729302", kill_on_drop: false }`
[INFO] [stdout] 5a64aaf31c9ef6e5ad32362360717d36b9d4b337e9f61aaa845e0aebd9729302