[INFO] fetching crate maybe-async 0.2.6...
[INFO] documenting maybe-async-0.2.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate maybe-async 0.2.6 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate maybe-async 0.2.6 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 maybe-async 0.2.6
[INFO] finished tweaking crates.io crate maybe-async 0.2.6
[INFO] tweaked toml for crates.io crate maybe-async 0.2.6 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate maybe-async 0.2.6 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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 84d3975fda9117d1d07342c0b8c236e15611d636e830c295964b87e255dd8cca
[INFO] running `Command { std: "docker" "start" "-a" "84d3975fda9117d1d07342c0b8c236e15611d636e830c295964b87e255dd8cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84d3975fda9117d1d07342c0b8c236e15611d636e830c295964b87e255dd8cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84d3975fda9117d1d07342c0b8c236e15611d636e830c295964b87e255dd8cca", kill_on_drop: false }`
[INFO] [stdout] 84d3975fda9117d1d07342c0b8c236e15611d636e830c295964b87e255dd8cca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] f5b672314875461ceaf263e9bbcb8f2baca769ca43917c4542d4cd53f24e6225
[INFO] running `Command { std: "docker" "start" "-a" "f5b672314875461ceaf263e9bbcb8f2baca769ca43917c4542d4cd53f24e6225", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting maybe-async v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.48s
[INFO] running `Command { std: "docker" "inspect" "f5b672314875461ceaf263e9bbcb8f2baca769ca43917c4542d4cd53f24e6225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5b672314875461ceaf263e9bbcb8f2baca769ca43917c4542d4cd53f24e6225", kill_on_drop: false }`
[INFO] [stdout] f5b672314875461ceaf263e9bbcb8f2baca769ca43917c4542d4cd53f24e6225
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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] 6dfcdddb47efe82d0d77abed1d51b883b0642121381fa711fb87b68e2b64bab9
[INFO] running `Command { std: "docker" "start" "-a" "6dfcdddb47efe82d0d77abed1d51b883b0642121381fa711fb87b68e2b64bab9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting maybe-async v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.27s
[INFO] running `Command { std: "docker" "inspect" "6dfcdddb47efe82d0d77abed1d51b883b0642121381fa711fb87b68e2b64bab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dfcdddb47efe82d0d77abed1d51b883b0642121381fa711fb87b68e2b64bab9", kill_on_drop: false }`
[INFO] [stdout] 6dfcdddb47efe82d0d77abed1d51b883b0642121381fa711fb87b68e2b64bab9