[INFO] cloning repository https://github.com/mhn1991/BinaryTree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mhn1991/BinaryTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhn1991%2FBinaryTree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhn1991%2FBinaryTree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7656902817f6da21bcc0d08e9f5b6266d92d2521
[INFO] documenting mhn1991/BinaryTree against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmhn1991%2FBinaryTree" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mhn1991/BinaryTree 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 git repo https://github.com/mhn1991/BinaryTree
[INFO] finished tweaking git repo https://github.com/mhn1991/BinaryTree
[INFO] tweaked toml for git repo https://github.com/mhn1991/BinaryTree written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mhn1991/BinaryTree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] cf78c7e6e10ccc11af9d1714b82460895a709b7497421efd34732b49ce3d1970
[INFO] running `Command { std: "docker" "start" "-a" "cf78c7e6e10ccc11af9d1714b82460895a709b7497421efd34732b49ce3d1970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf78c7e6e10ccc11af9d1714b82460895a709b7497421efd34732b49ce3d1970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf78c7e6e10ccc11af9d1714b82460895a709b7497421efd34732b49ce3d1970", kill_on_drop: false }`
[INFO] [stdout] cf78c7e6e10ccc11af9d1714b82460895a709b7497421efd34732b49ce3d1970
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] a25039154fe35e03ffd24124412a16aebdb5869882a21937aae37dacfea426b5
[INFO] running `Command { std: "docker" "start" "-a" "a25039154fe35e03ffd24124412a16aebdb5869882a21937aae37dacfea426b5", kill_on_drop: false }`
[INFO] [stderr]     Checking typed-arena v2.0.0
[INFO] [stderr]  Documenting BinaryTree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |         if (self.left.as_ref().unwrap().left.is_none()) {
[INFO] [stdout]    |            ^                                          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 67 -         if (self.left.as_ref().unwrap().left.is_none()) {
[INFO] [stdout] 67 +         if self.left.as_ref().unwrap().left.is_none() {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |         if (self.value.unwrap() <= value) {
[INFO] [stdout]     |            ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 135 -         if (self.value.unwrap() <= value) {
[INFO] [stdout] 135 +         if self.value.unwrap() <= value {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:136:16
[INFO] [stdout]     |
[INFO] [stdout] 136 |             if (self.right.is_none()) {
[INFO] [stdout]     |                ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 136 -             if (self.right.is_none()) {
[INFO] [stdout] 136 +             if self.right.is_none() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:140:16
[INFO] [stdout]     |
[INFO] [stdout] 140 |             if (self.right.as_ref().unwrap().value.unwrap() == value
[INFO] [stdout]     |                ^
[INFO] [stdout] 141 |                 && self.right.as_ref().unwrap().left.is_none()
[INFO] [stdout] 142 |                 && self.right.as_ref().unwrap().right.is_none())
[INFO] [stdout]     |                                                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 140 ~             if self.right.as_ref().unwrap().value.unwrap() == value
[INFO] [stdout] 141 |                 && self.right.as_ref().unwrap().left.is_none()
[INFO] [stdout] 142 ~                 && self.right.as_ref().unwrap().right.is_none()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:147:16
[INFO] [stdout]     |
[INFO] [stdout] 147 |             if (self.right.as_ref().unwrap().value.unwrap() == value
[INFO] [stdout]     |                ^
[INFO] [stdout] 148 |                 && self.right.as_ref().unwrap().right.is_some())
[INFO] [stdout]     |                                                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 147 ~             if self.right.as_ref().unwrap().value.unwrap() == value
[INFO] [stdout] 148 ~                 && self.right.as_ref().unwrap().right.is_some()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:155:16
[INFO] [stdout]     |
[INFO] [stdout] 155 |             if (self.right.as_ref().unwrap().value.unwrap() == value
[INFO] [stdout]     |                ^
[INFO] [stdout] 156 |                 && self.right.as_ref().unwrap().left.is_some())
[INFO] [stdout]     |                                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 155 ~             if self.right.as_ref().unwrap().value.unwrap() == value
[INFO] [stdout] 156 ~                 && self.right.as_ref().unwrap().left.is_some()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "a25039154fe35e03ffd24124412a16aebdb5869882a21937aae37dacfea426b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25039154fe35e03ffd24124412a16aebdb5869882a21937aae37dacfea426b5", kill_on_drop: false }`
[INFO] [stdout] a25039154fe35e03ffd24124412a16aebdb5869882a21937aae37dacfea426b5