[INFO] fetching crate learnrust 0.1.0...
[INFO] documenting learnrust-0.1.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate learnrust 0.1.0 into /workspace/builds/worker-76/source
[INFO] validating manifest of crates.io crate learnrust 0.1.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-76/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 824fa204aa2164cf75ad42eb69effebe7a56daeb2d07a980ec9f977960a9a1fe
[INFO] running `Command { std: "docker" "start" "-a" "824fa204aa2164cf75ad42eb69effebe7a56daeb2d07a980ec9f977960a9a1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "824fa204aa2164cf75ad42eb69effebe7a56daeb2d07a980ec9f977960a9a1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824fa204aa2164cf75ad42eb69effebe7a56daeb2d07a980ec9f977960a9a1fe", kill_on_drop: false }`
[INFO] [stdout] 824fa204aa2164cf75ad42eb69effebe7a56daeb2d07a980ec9f977960a9a1fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd5e6e8c8bdaeb0667e643d0a950d94b839d4d8cc69497f8a3d2d9d81aaf4bc7
[INFO] running `Command { std: "docker" "start" "-a" "fd5e6e8c8bdaeb0667e643d0a950d94b839d4d8cc69497f8a3d2d9d81aaf4bc7", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[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 2.57s
[INFO] running `Command { std: "docker" "inspect" "fd5e6e8c8bdaeb0667e643d0a950d94b839d4d8cc69497f8a3d2d9d81aaf4bc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5e6e8c8bdaeb0667e643d0a950d94b839d4d8cc69497f8a3d2d9d81aaf4bc7", kill_on_drop: false }`
[INFO] [stdout] fd5e6e8c8bdaeb0667e643d0a950d94b839d4d8cc69497f8a3d2d9d81aaf4bc7
