[INFO] cloning repository https://github.com/ContainedBlargh/rustlearn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ContainedBlargh/rustlearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FContainedBlargh%2Frustlearn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FContainedBlargh%2Frustlearn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99aae4588743133e90ba197de40ac108ee561256
[INFO] documenting ContainedBlargh/rustlearn against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FContainedBlargh%2Frustlearn" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ContainedBlargh/rustlearn on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ContainedBlargh/rustlearn
[INFO] finished tweaking git repo https://github.com/ContainedBlargh/rustlearn
[INFO] tweaked toml for git repo https://github.com/ContainedBlargh/rustlearn written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ContainedBlargh/rustlearn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8e6d44dff91a132bf07938a587cde478140c20c200f4361e070f6e1590bd06c
[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" "e8e6d44dff91a132bf07938a587cde478140c20c200f4361e070f6e1590bd06c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8e6d44dff91a132bf07938a587cde478140c20c200f4361e070f6e1590bd06c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8e6d44dff91a132bf07938a587cde478140c20c200f4361e070f6e1590bd06c", kill_on_drop: false }`
[INFO] [stdout] e8e6d44dff91a132bf07938a587cde478140c20c200f4361e070f6e1590bd06c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32c7dd5b625fb4434597f035b40810f567f838f17e12433f963a8eb46feee85d
[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" "32c7dd5b625fb4434597f035b40810f567f838f17e12433f963a8eb46feee85d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking num-iter v0.1.39
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking statistical v1.0.0
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling arrayfire v3.6.2
[INFO] [stderr]  Documenting rustlearn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]   --> src/main.rs:91:26
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn mean_square_error(Y: &Array<f32>, y: &Array<f32>) -> f32 {
[INFO] [stdout]    |                          ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` 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 26.59s
[INFO] running `Command { std: "docker" "inspect" "32c7dd5b625fb4434597f035b40810f567f838f17e12433f963a8eb46feee85d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32c7dd5b625fb4434597f035b40810f567f838f17e12433f963a8eb46feee85d", kill_on_drop: false }`
[INFO] [stdout] 32c7dd5b625fb4434597f035b40810f567f838f17e12433f963a8eb46feee85d