[INFO] cloning repository https://github.com/java007hf/Rust_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/java007hf/Rust_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjava007hf%2FRust_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjava007hf%2FRust_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac34e741d74baae1795a7768be62bf26999ad2ca
[INFO] documenting java007hf/Rust_demo 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%2Fjava007hf%2FRust_demo" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/java007hf/Rust_demo 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/java007hf/Rust_demo
[INFO] finished tweaking git repo https://github.com/java007hf/Rust_demo
[INFO] tweaked toml for git repo https://github.com/java007hf/Rust_demo written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate git repo https://github.com/java007hf/Rust_demo 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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 4370e39569f3a4dd1753cf35a06e874d1fb9f8a25de7db7250f7552e64f382fe
[INFO] running `Command { std: "docker" "start" "-a" "4370e39569f3a4dd1753cf35a06e874d1fb9f8a25de7db7250f7552e64f382fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4370e39569f3a4dd1753cf35a06e874d1fb9f8a25de7db7250f7552e64f382fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4370e39569f3a4dd1753cf35a06e874d1fb9f8a25de7db7250f7552e64f382fe", kill_on_drop: false }`
[INFO] [stdout] 4370e39569f3a4dd1753cf35a06e874d1fb9f8a25de7db7250f7552e64f382fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 08bdd3a8c9c4f1443cb5c02f44d63ec7e03e22e5cdd570129d13ae688476dd55
[INFO] running `Command { std: "docker" "start" "-a" "08bdd3a8c9c4f1443cb5c02f44d63ec7e03e22e5cdd570129d13ae688476dd55", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]  Documenting rust_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/main.rs:214:14
[INFO] [stdout]     |
[INFO] [stdout] 214 |     for x in (0..11) {
[INFO] [stdout]     |              ^     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 214 -     for x in (0..11) {
[INFO] [stdout] 214 +     for x in 0..11 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "08bdd3a8c9c4f1443cb5c02f44d63ec7e03e22e5cdd570129d13ae688476dd55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08bdd3a8c9c4f1443cb5c02f44d63ec7e03e22e5cdd570129d13ae688476dd55", kill_on_drop: false }`
[INFO] [stdout] 08bdd3a8c9c4f1443cb5c02f44d63ec7e03e22e5cdd570129d13ae688476dd55