[INFO] fetching crate mathtool 0.2.3...
[INFO] documenting mathtool-0.2.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate mathtool 0.2.3 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate mathtool 0.2.3 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 mathtool 0.2.3
[INFO] finished tweaking crates.io crate mathtool 0.2.3
[INFO] tweaked toml for crates.io crate mathtool 0.2.3 written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate crates.io crate mathtool 0.2.3 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] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-27/source/src/subtract.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 6d820903853979e52a64242ab14008abaa05c80a3e81a4d113755dd7176aec89
[INFO] running `Command { std: "docker" "start" "-a" "6d820903853979e52a64242ab14008abaa05c80a3e81a4d113755dd7176aec89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d820903853979e52a64242ab14008abaa05c80a3e81a4d113755dd7176aec89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d820903853979e52a64242ab14008abaa05c80a3e81a4d113755dd7176aec89", kill_on_drop: false }`
[INFO] [stdout] 6d820903853979e52a64242ab14008abaa05c80a3e81a4d113755dd7176aec89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 88d2fdcbeb2c7f6ec39a3b984e73a4cf353162a5747b3950555effb0ebfa2ce9
[INFO] running `Command { std: "docker" "start" "-a" "88d2fdcbeb2c7f6ec39a3b984e73a4cf353162a5747b3950555effb0ebfa2ce9", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/subtract.rs
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]  Documenting mathtool v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.07s
[INFO] running `Command { std: "docker" "inspect" "88d2fdcbeb2c7f6ec39a3b984e73a4cf353162a5747b3950555effb0ebfa2ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d2fdcbeb2c7f6ec39a3b984e73a4cf353162a5747b3950555effb0ebfa2ce9", kill_on_drop: false }`
[INFO] [stdout] 88d2fdcbeb2c7f6ec39a3b984e73a4cf353162a5747b3950555effb0ebfa2ce9