[INFO] fetching crate learnrust 0.1.0...
[INFO] documenting learnrust-0.1.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate learnrust 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate learnrust 0.1.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adff2e28e5cc73aa7f2590064cb320278c05548a2e8122b086dcb57f28a1fa07
[INFO] running `Command { std: "docker" "start" "-a" "adff2e28e5cc73aa7f2590064cb320278c05548a2e8122b086dcb57f28a1fa07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adff2e28e5cc73aa7f2590064cb320278c05548a2e8122b086dcb57f28a1fa07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adff2e28e5cc73aa7f2590064cb320278c05548a2e8122b086dcb57f28a1fa07", kill_on_drop: false }`
[INFO] [stdout] adff2e28e5cc73aa7f2590064cb320278c05548a2e8122b086dcb57f28a1fa07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b30069866544665334cb7fa2b7e8334bd9415fb682def789102cf99f74c6d82
[INFO] running `Command { std: "docker" "start" "-a" "7b30069866544665334cb7fa2b7e8334bd9415fb682def789102cf99f74c6d82", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[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]    |     ^                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 16 -     (self.x.pow(2) +  self.y.pow(2))
[INFO] [stdout] 16 +     self.x.pow(2) +  self.y.pow(2)
[INFO] [stdout]    | 
[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]    |       ^              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     if(self.count < 6){
[INFO] [stdout] 30 +     if self.count < 6 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.53s
[INFO] running `Command { std: "docker" "inspect" "7b30069866544665334cb7fa2b7e8334bd9415fb682def789102cf99f74c6d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b30069866544665334cb7fa2b7e8334bd9415fb682def789102cf99f74c6d82", kill_on_drop: false }`
[INFO] [stdout] 7b30069866544665334cb7fa2b7e8334bd9415fb682def789102cf99f74c6d82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] fc1bd39e7b8a4afe55e5c31e005a47e76dd0e278f4c915882c8e700fda118c3d
[INFO] running `Command { std: "docker" "start" "-a" "fc1bd39e7b8a4afe55e5c31e005a47e76dd0e278f4c915882c8e700fda118c3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[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]    |     ^                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 16 -     (self.x.pow(2) +  self.y.pow(2))
[INFO] [stdout] 16 +     self.x.pow(2) +  self.y.pow(2)
[INFO] [stdout]    | 
[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]    |       ^              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -     if(self.count < 6){
[INFO] [stdout] 30 +     if self.count < 6 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.54s
[INFO] running `Command { std: "docker" "inspect" "fc1bd39e7b8a4afe55e5c31e005a47e76dd0e278f4c915882c8e700fda118c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc1bd39e7b8a4afe55e5c31e005a47e76dd0e278f4c915882c8e700fda118c3d", kill_on_drop: false }`
[INFO] [stdout] fc1bd39e7b8a4afe55e5c31e005a47e76dd0e278f4c915882c8e700fda118c3d