[INFO] cloning repository https://github.com/matklad/group-by-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matklad/group-by-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fgroup-by-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fgroup-by-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 297c95d461427a61f621767443897c37bef43f0f
[INFO] documenting matklad/group-by-challenge against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatklad%2Fgroup-by-challenge" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matklad/group-by-challenge on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matklad/group-by-challenge
[INFO] finished tweaking git repo https://github.com/matklad/group-by-challenge
[INFO] tweaked toml for git repo https://github.com/matklad/group-by-challenge written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/matklad/group-by-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91a86febe336064bcd31d6c6280df3ac75f44d24cb07bfdfa1f69e5bc8d050ae
[INFO] running `Command { std: "docker" "start" "-a" "91a86febe336064bcd31d6c6280df3ac75f44d24cb07bfdfa1f69e5bc8d050ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91a86febe336064bcd31d6c6280df3ac75f44d24cb07bfdfa1f69e5bc8d050ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91a86febe336064bcd31d6c6280df3ac75f44d24cb07bfdfa1f69e5bc8d050ae", kill_on_drop: false }`
[INFO] [stdout] 91a86febe336064bcd31d6c6280df3ac75f44d24cb07bfdfa1f69e5bc8d050ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 607c9f71d30cf0e224a7ce252a8941e3fd16f7384989b481aeda9afb011a2a40
[INFO] running `Command { std: "docker" "start" "-a" "607c9f71d30cf0e224a7ce252a8941e3fd16f7384989b481aeda9afb011a2a40", kill_on_drop: false }`
[INFO] [stderr]  Documenting group-by-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "607c9f71d30cf0e224a7ce252a8941e3fd16f7384989b481aeda9afb011a2a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "607c9f71d30cf0e224a7ce252a8941e3fd16f7384989b481aeda9afb011a2a40", kill_on_drop: false }`
[INFO] [stdout] 607c9f71d30cf0e224a7ce252a8941e3fd16f7384989b481aeda9afb011a2a40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] c8ff901c2186a0b4df13c173e2137bc61fb82b49bfbc472340a4e3593fa8d8b1
[INFO] running `Command { std: "docker" "start" "-a" "c8ff901c2186a0b4df13c173e2137bc61fb82b49bfbc472340a4e3593fa8d8b1", kill_on_drop: false }`
[INFO] [stderr]  Documenting group-by-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "c8ff901c2186a0b4df13c173e2137bc61fb82b49bfbc472340a4e3593fa8d8b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8ff901c2186a0b4df13c173e2137bc61fb82b49bfbc472340a4e3593fa8d8b1", kill_on_drop: false }`
[INFO] [stdout] c8ff901c2186a0b4df13c173e2137bc61fb82b49bfbc472340a4e3593fa8d8b1