[INFO] fetching crate memx 0.1.20...
[INFO] documenting memx-0.1.20 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate memx 0.1.20 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate memx 0.1.20 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] removed /workspace/builds/worker-21/source/.cargo/config
[INFO] started tweaking crates.io crate memx 0.1.20
[INFO] finished tweaking crates.io crate memx 0.1.20
[INFO] tweaked toml for crates.io crate memx 0.1.20 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate memx 0.1.20 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 5153b54ea1d6f26e40db2e5cc781ba15900027ccf6caa2d41ecbde3bbf9f319e
[INFO] running `Command { std: "docker" "start" "-a" "5153b54ea1d6f26e40db2e5cc781ba15900027ccf6caa2d41ecbde3bbf9f319e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5153b54ea1d6f26e40db2e5cc781ba15900027ccf6caa2d41ecbde3bbf9f319e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5153b54ea1d6f26e40db2e5cc781ba15900027ccf6caa2d41ecbde3bbf9f319e", kill_on_drop: false }`
[INFO] [stdout] 5153b54ea1d6f26e40db2e5cc781ba15900027ccf6caa2d41ecbde3bbf9f319e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 00035e3cf2c44a7c983961162604c214b8922280206d2a0c5c139ae6f214d874
[INFO] running `Command { std: "docker" "start" "-a" "00035e3cf2c44a7c983961162604c214b8922280206d2a0c5c139ae6f214d874", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling memx v0.1.20 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting memx v0.1.20 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `Command { std: "docker" "inspect" "00035e3cf2c44a7c983961162604c214b8922280206d2a0c5c139ae6f214d874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00035e3cf2c44a7c983961162604c214b8922280206d2a0c5c139ae6f214d874", kill_on_drop: false }`
[INFO] [stdout] 00035e3cf2c44a7c983961162604c214b8922280206d2a0c5c139ae6f214d874
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] a164d8c6ceee64d209c910eb40b6ecaed99cfe91035aee038d9808e2f06addc5
[INFO] running `Command { std: "docker" "start" "-a" "a164d8c6ceee64d209c910eb40b6ecaed99cfe91035aee038d9808e2f06addc5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling memx v0.1.20 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting memx v0.1.20 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "a164d8c6ceee64d209c910eb40b6ecaed99cfe91035aee038d9808e2f06addc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a164d8c6ceee64d209c910eb40b6ecaed99cfe91035aee038d9808e2f06addc5", kill_on_drop: false }`
[INFO] [stdout] a164d8c6ceee64d209c910eb40b6ecaed99cfe91035aee038d9808e2f06addc5