[INFO] cloning repository https://github.com/quietlychris/neural_net_mvp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quietlychris/neural_net_mvp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquietlychris%2Fneural_net_mvp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquietlychris%2Fneural_net_mvp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 730675fc116606515dd299b0e99b0bc0ed8b2aaf
[INFO] checking quietlychris/neural_net_mvp against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquietlychris%2Fneural_net_mvp" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/quietlychris/neural_net_mvp
[INFO] finished tweaking git repo https://github.com/quietlychris/neural_net_mvp
[INFO] tweaked toml for git repo https://github.com/quietlychris/neural_net_mvp written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/quietlychris/neural_net_mvp on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.13.1 (available: v0.17.2)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 142c5a127d84ebf576bf5b9a122bccc739d91375fd6387c81458eb74024a2800
[INFO] running `Command { std: "docker" "start" "-a" "142c5a127d84ebf576bf5b9a122bccc739d91375fd6387c81458eb74024a2800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "142c5a127d84ebf576bf5b9a122bccc739d91375fd6387c81458eb74024a2800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "142c5a127d84ebf576bf5b9a122bccc739d91375fd6387c81458eb74024a2800", kill_on_drop: false }`
[INFO] [stdout] 142c5a127d84ebf576bf5b9a122bccc739d91375fd6387c81458eb74024a2800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c22088b3cbdfc0332709242c23c1274667a4702376edea2c0c34d622e40cddd
[INFO] running `Command { std: "docker" "start" "-a" "9c22088b3cbdfc0332709242c23c1274667a4702376edea2c0c34d622e40cddd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking neural_net_mvp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SeedableRng`
[INFO] [stdout]  --> src/main.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{prelude::*, SeedableRng};
[INFO] [stdout]   |                        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let error = (output.clone() - output_hat.clone())
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]   --> src/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut input = Array::<f32, _>::zeros((n, m));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_prime` is never used
[INFO] [stdout]   --> src/main.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn sigmoid_prime(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SeedableRng`
[INFO] [stdout]  --> src/main.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{prelude::*, SeedableRng};
[INFO] [stdout]   |                        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let error = (output.clone() - output_hat.clone())
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]   --> src/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut input = Array::<f32, _>::zeros((n, m));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_prime` is never used
[INFO] [stdout]   --> src/main.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn sigmoid_prime(x: f32) -> f32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.79s
[INFO] running `Command { std: "docker" "inspect" "9c22088b3cbdfc0332709242c23c1274667a4702376edea2c0c34d622e40cddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c22088b3cbdfc0332709242c23c1274667a4702376edea2c0c34d622e40cddd", kill_on_drop: false }`
[INFO] [stdout] 9c22088b3cbdfc0332709242c23c1274667a4702376edea2c0c34d622e40cddd