[INFO] fetching crate artha 0.2.1...
[INFO] checking artha-0.2.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate artha 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate artha 0.2.1
[INFO] finished tweaking crates.io crate artha 0.2.1
[INFO] tweaked toml for crates.io crate artha 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate artha 0.2.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 31 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.12.1 (available: v0.16.1)
[INFO] [stderr]       Adding ndarray-rand v0.9.0 (available: v0.15.0)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pbr v1.1.1
[INFO] [stderr]   Downloaded ndarray-rand v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61a19e50f559fd0b081e2053d3b56fb6682b74bdc2618d8391826eecbc826c56
[INFO] running `Command { std: "docker" "start" "-a" "61a19e50f559fd0b081e2053d3b56fb6682b74bdc2618d8391826eecbc826c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61a19e50f559fd0b081e2053d3b56fb6682b74bdc2618d8391826eecbc826c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a19e50f559fd0b081e2053d3b56fb6682b74bdc2618d8391826eecbc826c56", kill_on_drop: false }`
[INFO] [stdout] 61a19e50f559fd0b081e2053d3b56fb6682b74bdc2618d8391826eecbc826c56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2cc93c6181ee8f5fac952231a5cf3b9f6a60c4e7836145a0b00f9705f6fbd67
[INFO] running `Command { std: "docker" "start" "-a" "b2cc93c6181ee8f5fac952231a5cf3b9f6a60c4e7836145a0b00f9705f6fbd67", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking pbr v1.1.1
[INFO] [stderr]     Checking ndarray-rand v0.9.0
[INFO] [stderr]     Checking artha v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `input_size`, `output_size`, and `hidden_sizes` are never read
[INFO] [stdout]   --> src/neural_net.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct NeuralNetwork {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 12 |     input_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     output_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 14 |     hidden_sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NeuralNetwork` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input_size`, `output_size`, and `hidden_sizes` are never read
[INFO] [stdout]   --> src/neural_net.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct NeuralNetwork {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 12 |     input_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     output_size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 14 |     hidden_sizes: Vec<usize>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NeuralNetwork` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.30s
[INFO] running `Command { std: "docker" "inspect" "b2cc93c6181ee8f5fac952231a5cf3b9f6a60c4e7836145a0b00f9705f6fbd67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2cc93c6181ee8f5fac952231a5cf3b9f6a60c4e7836145a0b00f9705f6fbd67", kill_on_drop: false }`
[INFO] [stdout] b2cc93c6181ee8f5fac952231a5cf3b9f6a60c4e7836145a0b00f9705f6fbd67