[INFO] fetching crate ref-mut-n 1.0.1...
[INFO] documenting ref-mut-n-1.0.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate ref-mut-n 1.0.1 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate ref-mut-n 1.0.1 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 crates.io crate ref-mut-n 1.0.1
[INFO] finished tweaking crates.io crate ref-mut-n 1.0.1
[INFO] tweaked toml for crates.io crate ref-mut-n 1.0.1 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate crates.io crate ref-mut-n 1.0.1 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-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] beab46a09b8a22415f88e273aa6086b7b56925c1f8574ec3b30a0f6b38796ea5
[INFO] running `Command { std: "docker" "start" "-a" "beab46a09b8a22415f88e273aa6086b7b56925c1f8574ec3b30a0f6b38796ea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "beab46a09b8a22415f88e273aa6086b7b56925c1f8574ec3b30a0f6b38796ea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "beab46a09b8a22415f88e273aa6086b7b56925c1f8574ec3b30a0f6b38796ea5", kill_on_drop: false }`
[INFO] [stdout] beab46a09b8a22415f88e273aa6086b7b56925c1f8574ec3b30a0f6b38796ea5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] dac64cb1782061e9af838f102bc7464e7628682ae12cb8a0968bd18d08f5108c
[INFO] running `Command { std: "docker" "start" "-a" "dac64cb1782061e9af838f102bc7464e7628682ae12cb8a0968bd18d08f5108c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking quote v1.0.16
[INFO] [stderr]  Documenting ref-mut-n v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "dac64cb1782061e9af838f102bc7464e7628682ae12cb8a0968bd18d08f5108c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dac64cb1782061e9af838f102bc7464e7628682ae12cb8a0968bd18d08f5108c", kill_on_drop: false }`
[INFO] [stdout] dac64cb1782061e9af838f102bc7464e7628682ae12cb8a0968bd18d08f5108c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 90ef656cf8be2aa83f9442f64c90854faa56609ff8013d344b0e0db7827eed71
[INFO] running `Command { std: "docker" "start" "-a" "90ef656cf8be2aa83f9442f64c90854faa56609ff8013d344b0e0db7827eed71", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking quote v1.0.16
[INFO] [stderr]  Documenting ref-mut-n v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.60s
[INFO] running `Command { std: "docker" "inspect" "90ef656cf8be2aa83f9442f64c90854faa56609ff8013d344b0e0db7827eed71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90ef656cf8be2aa83f9442f64c90854faa56609ff8013d344b0e0db7827eed71", kill_on_drop: false }`
[INFO] [stdout] 90ef656cf8be2aa83f9442f64c90854faa56609ff8013d344b0e0db7827eed71