[INFO] cloning repository https://github.com/marioortizmanero/rust-optional-params
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marioortizmanero/rust-optional-params" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarioortizmanero%2Frust-optional-params", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarioortizmanero%2Frust-optional-params'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0817cfb7d500c3817d6fe5e3e35b8c394a5e9ff5
[INFO] documenting marioortizmanero/rust-optional-params 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%2Fmarioortizmanero%2Frust-optional-params" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marioortizmanero/rust-optional-params 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/marioortizmanero/rust-optional-params
[INFO] finished tweaking git repo https://github.com/marioortizmanero/rust-optional-params
[INFO] tweaked toml for git repo https://github.com/marioortizmanero/rust-optional-params written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/marioortizmanero/rust-optional-params 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] c9eed0878a13d02bbaba7d6e34678f5118b9d03edf5f065e62004e09aaa235ac
[INFO] running `Command { std: "docker" "start" "-a" "c9eed0878a13d02bbaba7d6e34678f5118b9d03edf5f065e62004e09aaa235ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9eed0878a13d02bbaba7d6e34678f5118b9d03edf5f065e62004e09aaa235ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9eed0878a13d02bbaba7d6e34678f5118b9d03edf5f065e62004e09aaa235ac", kill_on_drop: false }`
[INFO] [stdout] c9eed0878a13d02bbaba7d6e34678f5118b9d03edf5f065e62004e09aaa235ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 01d358d3722ad8ac3cd2c872c9f655bc9df9cbf91e15fe71d6260bb961d3243f
[INFO] running `Command { std: "docker" "start" "-a" "01d358d3722ad8ac3cd2c872c9f655bc9df9cbf91e15fe71d6260bb961d3243f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling duang v0.1.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]  Documenting optional_params_showcase v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.83s
[INFO] running `Command { std: "docker" "inspect" "01d358d3722ad8ac3cd2c872c9f655bc9df9cbf91e15fe71d6260bb961d3243f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01d358d3722ad8ac3cd2c872c9f655bc9df9cbf91e15fe71d6260bb961d3243f", kill_on_drop: false }`
[INFO] [stdout] 01d358d3722ad8ac3cd2c872c9f655bc9df9cbf91e15fe71d6260bb961d3243f