[INFO] cloning repository https://github.com/jtempest/rust_book_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtempest/rust_book_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtempest%2Frust_book_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtempest%2Frust_book_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23b10de80673adaee05523125cf3695738c31e09
[INFO] documenting jtempest/rust_book_exercises 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%2Fjtempest%2Frust_book_exercises" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jtempest/rust_book_exercises 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/jtempest/rust_book_exercises
[INFO] finished tweaking git repo https://github.com/jtempest/rust_book_exercises
[INFO] tweaked toml for git repo https://github.com/jtempest/rust_book_exercises written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jtempest/rust_book_exercises 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] cc2ae0b9f6fcb9688ad19a2920f6828eec6f2a91b6bc511bee91a093b089c8ec
[INFO] running `Command { std: "docker" "start" "-a" "cc2ae0b9f6fcb9688ad19a2920f6828eec6f2a91b6bc511bee91a093b089c8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc2ae0b9f6fcb9688ad19a2920f6828eec6f2a91b6bc511bee91a093b089c8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc2ae0b9f6fcb9688ad19a2920f6828eec6f2a91b6bc511bee91a093b089c8ec", kill_on_drop: false }`
[INFO] [stdout] cc2ae0b9f6fcb9688ad19a2920f6828eec6f2a91b6bc511bee91a093b089c8ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] fa4eee909d1a4951a6ad086b8278e3cfd88817ef6a7d47c27129ef82bcb16ba6
[INFO] running `Command { std: "docker" "start" "-a" "fa4eee909d1a4951a6ad086b8278e3cfd88817ef6a7d47c27129ef82bcb16ba6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]  Documenting webserver v0.1.0 (/opt/rustwide/workdir/webserver)
[INFO] [stderr]     Checking webserver v0.1.0 (/opt/rustwide/workdir/webserver)
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]  Documenting two_threads v0.1.0 (/opt/rustwide/workdir/threads)
[INFO] [stderr]  Documenting twelve_days v0.1.0 (/opt/rustwide/workdir/twelve_days)
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]  Documenting pig_latin v0.1.0 (/opt/rustwide/workdir/pig_latin)
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]  Documenting guessing v0.1.0 (/opt/rustwide/workdir/guessing)
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]  Documenting averages v0.1.0 (/opt/rustwide/workdir/averages)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.85s
[INFO] running `Command { std: "docker" "inspect" "fa4eee909d1a4951a6ad086b8278e3cfd88817ef6a7d47c27129ef82bcb16ba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa4eee909d1a4951a6ad086b8278e3cfd88817ef6a7d47c27129ef82bcb16ba6", kill_on_drop: false }`
[INFO] [stdout] fa4eee909d1a4951a6ad086b8278e3cfd88817ef6a7d47c27129ef82bcb16ba6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 6ee0bdfa1dce47d1fe8fb3d99bea3dd428297145a0ec3a46890bb57e98ea001a
[INFO] running `Command { std: "docker" "start" "-a" "6ee0bdfa1dce47d1fe8fb3d99bea3dd428297145a0ec3a46890bb57e98ea001a", kill_on_drop: false }`
[INFO] [stderr] error: manifest path `/opt/rustwide/workdir/Cargo.toml` is a virtual manifest, but this command requires running against an actual package in this workspace
[INFO] running `Command { std: "docker" "inspect" "6ee0bdfa1dce47d1fe8fb3d99bea3dd428297145a0ec3a46890bb57e98ea001a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ee0bdfa1dce47d1fe8fb3d99bea3dd428297145a0ec3a46890bb57e98ea001a", kill_on_drop: false }`
[INFO] [stdout] 6ee0bdfa1dce47d1fe8fb3d99bea3dd428297145a0ec3a46890bb57e98ea001a