[INFO] cloning repository https://github.com/robert-at-pretension-io/Rusty_ML
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robert-at-pretension-io/Rusty_ML" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobert-at-pretension-io%2FRusty_ML", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobert-at-pretension-io%2FRusty_ML'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b8b1af60d71e9edce0c0ce4aa757f24bf5e6ca7
[INFO] documenting robert-at-pretension-io/Rusty_ML 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%2Frobert-at-pretension-io%2FRusty_ML" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robert-at-pretension-io/Rusty_ML 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/robert-at-pretension-io/Rusty_ML
[INFO] finished tweaking git repo https://github.com/robert-at-pretension-io/Rusty_ML
[INFO] tweaked toml for git repo https://github.com/robert-at-pretension-io/Rusty_ML written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/robert-at-pretension-io/Rusty_ML 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] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded bincode v0.5.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 49aa73fb1008738d9fe4ad9343775e00b4646bee62f71a76f5a53fecab2a6dd1
[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" "49aa73fb1008738d9fe4ad9343775e00b4646bee62f71a76f5a53fecab2a6dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49aa73fb1008738d9fe4ad9343775e00b4646bee62f71a76f5a53fecab2a6dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49aa73fb1008738d9fe4ad9343775e00b4646bee62f71a76f5a53fecab2a6dd1", kill_on_drop: false }`
[INFO] [stdout] 49aa73fb1008738d9fe4ad9343775e00b4646bee62f71a76f5a53fecab2a6dd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 458bcc01c1fe9f99a9b53ce6026d0bc72bbe6224bb7c139ccc38d49448d125bd
[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" "458bcc01c1fe9f99a9b53ce6026d0bc72bbe6224bb7c139ccc38d49448d125bd", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking ansi_term v0.7.5
[INFO] [stderr]     Checking bincode v0.5.9
[INFO] [stderr]  Documenting load_data v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:230:20
[INFO] [stdout]     |
[INFO] [stdout] 230 |     let mut v: Vec<(String)> = Vec::new();
[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 6.62s
[INFO] running `Command { std: "docker" "inspect" "458bcc01c1fe9f99a9b53ce6026d0bc72bbe6224bb7c139ccc38d49448d125bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "458bcc01c1fe9f99a9b53ce6026d0bc72bbe6224bb7c139ccc38d49448d125bd", kill_on_drop: false }`
[INFO] [stdout] 458bcc01c1fe9f99a9b53ce6026d0bc72bbe6224bb7c139ccc38d49448d125bd