[INFO] cloning repository https://github.com/legeyda/neurocr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/legeyda/neurocr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46838c8be4edee3452e26ef790fb982934acef9b
[INFO] documenting legeyda/neurocr against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flegeyda%2Fneurocr" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/legeyda/neurocr on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/legeyda/neurocr
[INFO] finished tweaking git repo https://github.com/legeyda/neurocr
[INFO] tweaked toml for git repo https://github.com/legeyda/neurocr written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/legeyda/neurocr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termcolor v0.3.4
[INFO] [stderr]   Downloaded mnist v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ef1ddfc1f98f498089b63c0285b7642ab7c7534e83031890a24d42c4ff3a884
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9ef1ddfc1f98f498089b63c0285b7642ab7c7534e83031890a24d42c4ff3a884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ef1ddfc1f98f498089b63c0285b7642ab7c7534e83031890a24d42c4ff3a884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ef1ddfc1f98f498089b63c0285b7642ab7c7534e83031890a24d42c4ff3a884", kill_on_drop: false }`
[INFO] [stdout] 9ef1ddfc1f98f498089b63c0285b7642ab7c7534e83031890a24d42c4ff3a884
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0962bc5b2d32d76f4c76693c6a4099ab0207eebc0c6c0fa8fa91e51a12f0c960
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0962bc5b2d32d76f4c76693c6a4099ab0207eebc0c6c0fa8fa91e51a12f0c960", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking termcolor v0.3.4
[INFO] [stderr]     Checking rand v0.3.20
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]     Checking simple_logger v0.5.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-complex v0.1.41
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking env_logger v0.5.3
[INFO] [stderr]  Documenting neurocr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/network.rs:195:17
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut der = (&outputs[n-1] - expected_output);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` 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 11.76s
[INFO] running `Command { std: "docker" "inspect" "0962bc5b2d32d76f4c76693c6a4099ab0207eebc0c6c0fa8fa91e51a12f0c960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0962bc5b2d32d76f4c76693c6a4099ab0207eebc0c6c0fa8fa91e51a12f0c960", kill_on_drop: false }`
[INFO] [stdout] 0962bc5b2d32d76f4c76693c6a4099ab0207eebc0c6c0fa8fa91e51a12f0c960