[INFO] cloning repository https://github.com/hrodic/rust-book-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hrodic/rust-book-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrodic%2Frust-book-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrodic%2Frust-book-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89477eae6028f5845b1e0afbad59f17442076e7f
[INFO] documenting hrodic/rust-book-playground against 1.64.0 for beta-1.65-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrodic%2Frust-book-playground" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hrodic/rust-book-playground on toolchain 1.64.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.64.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hrodic/rust-book-playground
[INFO] finished tweaking git repo https://github.com/hrodic/rust-book-playground
[INFO] tweaked toml for git repo https://github.com/hrodic/rust-book-playground written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/hrodic/rust-book-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.64.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+1.64.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc8c388b4c7215b75b9fe4054ca0f4ec9ee7119b60e9066d48bd95d18941367a
[INFO] running `Command { std: "docker" "start" "-a" "fc8c388b4c7215b75b9fe4054ca0f4ec9ee7119b60e9066d48bd95d18941367a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc8c388b4c7215b75b9fe4054ca0f4ec9ee7119b60e9066d48bd95d18941367a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc8c388b4c7215b75b9fe4054ca0f4ec9ee7119b60e9066d48bd95d18941367a", kill_on_drop: false }`
[INFO] [stdout] fc8c388b4c7215b75b9fe4054ca0f4ec9ee7119b60e9066d48bd95d18941367a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+1.64.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5a514d9663d0287452e5eac2544c211ab31f7282a5f18d4f5f5c773ffb88526
[INFO] running `Command { std: "docker" "start" "-a" "e5a514d9663d0287452e5eac2544c211ab31f7282a5f18d4f5f5c773ffb88526", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]  Documenting rust-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rust-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `rust-book`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name collections src/bin/collections/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=0a0c4d56efcc24b1 -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-c669dd0f915f9402.rmeta --extern rust_book=/opt/rustwide/target/debug/deps/librust_book-1f605eadb2f8505d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `rust-book`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name structs src/bin/structs/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=0d62621249ac7b06 -L dependency=/opt/rustwide/target/debug/deps --extern rand=/opt/rustwide/target/debug/deps/librand-c669dd0f915f9402.rmeta --extern rust_book=/opt/rustwide/target/debug/deps/librust_book-1f605eadb2f8505d.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e5a514d9663d0287452e5eac2544c211ab31f7282a5f18d4f5f5c773ffb88526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5a514d9663d0287452e5eac2544c211ab31f7282a5f18d4f5f5c773ffb88526", kill_on_drop: false }`
[INFO] [stdout] e5a514d9663d0287452e5eac2544c211ab31f7282a5f18d4f5f5c773ffb88526