[INFO] fetching crate mailchecker 4.1.17...
[INFO] documenting mailchecker-4.1.17 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate mailchecker 4.1.17 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate mailchecker 4.1.17 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 crates.io crate mailchecker 4.1.17
[INFO] finished tweaking crates.io crate mailchecker 4.1.17
[INFO] tweaked toml for crates.io crate mailchecker 4.1.17 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate crates.io crate mailchecker 4.1.17 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded difference v1.0.0
[INFO] [stderr]   Downloaded pretty_assertions v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] d3ce803c30243f0bbeeceba801e42912de244848215ec01b00bccb9a340fc618
[INFO] running `Command { std: "docker" "start" "-a" "d3ce803c30243f0bbeeceba801e42912de244848215ec01b00bccb9a340fc618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3ce803c30243f0bbeeceba801e42912de244848215ec01b00bccb9a340fc618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3ce803c30243f0bbeeceba801e42912de244848215ec01b00bccb9a340fc618", kill_on_drop: false }`
[INFO] [stdout] d3ce803c30243f0bbeeceba801e42912de244848215ec01b00bccb9a340fc618
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] d972e0b9329a5b6d1d9c36d954ffce3cb17a5dcb4f1b6e78f79eda7825114413
[INFO] running `Command { std: "docker" "start" "-a" "d972e0b9329a5b6d1d9c36d954ffce3cb17a5dcb4f1b6e78f79eda7825114413", kill_on_drop: false }`
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]  Documenting mailchecker v4.1.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "d972e0b9329a5b6d1d9c36d954ffce3cb17a5dcb4f1b6e78f79eda7825114413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d972e0b9329a5b6d1d9c36d954ffce3cb17a5dcb4f1b6e78f79eda7825114413", kill_on_drop: false }`
[INFO] [stdout] d972e0b9329a5b6d1d9c36d954ffce3cb17a5dcb4f1b6e78f79eda7825114413
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 87b800f578ba3c2086f376dea0c856f8af4233e899966fc74cf6b3f323f29e47
[INFO] running `Command { std: "docker" "start" "-a" "87b800f578ba3c2086f376dea0c856f8af4233e899966fc74cf6b3f323f29e47", kill_on_drop: false }`
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]  Documenting mailchecker v4.1.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "87b800f578ba3c2086f376dea0c856f8af4233e899966fc74cf6b3f323f29e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b800f578ba3c2086f376dea0c856f8af4233e899966fc74cf6b3f323f29e47", kill_on_drop: false }`
[INFO] [stdout] 87b800f578ba3c2086f376dea0c856f8af4233e899966fc74cf6b3f323f29e47