[INFO] fetching crate learnrust 0.1.0...
[INFO] documenting learnrust-0.1.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate learnrust 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate learnrust 0.1.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate learnrust 0.1.0
[INFO] finished tweaking crates.io crate learnrust 0.1.0
[INFO] tweaked toml for crates.io crate learnrust 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd1a37848b0afed0faedbbc4884f182283fcc74c23382ed38559d2f312489c1e
[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" "dd1a37848b0afed0faedbbc4884f182283fcc74c23382ed38559d2f312489c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd1a37848b0afed0faedbbc4884f182283fcc74c23382ed38559d2f312489c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd1a37848b0afed0faedbbc4884f182283fcc74c23382ed38559d2f312489c1e", kill_on_drop: false }`
[INFO] [stdout] dd1a37848b0afed0faedbbc4884f182283fcc74c23382ed38559d2f312489c1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c8a01e6121f92afbc7a6108c8b601e55712d6646932aacc6452ff173e42c3d2
[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" "2c8a01e6121f92afbc7a6108c8b601e55712d6646932aacc6452ff173e42c3d2", kill_on_drop: false }`
[INFO] [stderr]  Documenting learnrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/lessons/tryGenericTypes.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     (self.x.pow(2) +  self.y.pow(2))
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/closures/learnIterator.rs:30:7
[INFO] [stdout]    |
[INFO] [stdout] 30 |     if(self.count < 6){
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "2c8a01e6121f92afbc7a6108c8b601e55712d6646932aacc6452ff173e42c3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c8a01e6121f92afbc7a6108c8b601e55712d6646932aacc6452ff173e42c3d2", kill_on_drop: false }`
[INFO] [stdout] 2c8a01e6121f92afbc7a6108c8b601e55712d6646932aacc6452ff173e42c3d2
