[INFO] fetching crate back 0.1.1...
[INFO] documenting back-0.1.1 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate back 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate back 0.1.1 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate back 0.1.1
[INFO] finished tweaking crates.io crate back 0.1.1
[INFO] tweaked toml for crates.io crate back 0.1.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate back 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xdg v2.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6eaac389f04eb832efe03cc270ea087b8fda6e779072f17265aa791fe02ed5ce
[INFO] running `Command { std: "docker" "start" "-a" "6eaac389f04eb832efe03cc270ea087b8fda6e779072f17265aa791fe02ed5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6eaac389f04eb832efe03cc270ea087b8fda6e779072f17265aa791fe02ed5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eaac389f04eb832efe03cc270ea087b8fda6e779072f17265aa791fe02ed5ce", kill_on_drop: false }`
[INFO] [stdout] 6eaac389f04eb832efe03cc270ea087b8fda6e779072f17265aa791fe02ed5ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6901c58c0bb81f3348a68b5f53ad8f616597f68ba85a52e711543db67fc6e711
[INFO] running `Command { std: "docker" "start" "-a" "6901c58c0bb81f3348a68b5f53ad8f616597f68ba85a52e711543db67fc6e711", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking xattr v0.2.3
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking filetime v0.2.19
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking tar v0.4.38
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking xdg v2.4.1
[INFO] [stderr]     Checking clap v3.2.23
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]  Documenting back v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.03s
[INFO] running `Command { std: "docker" "inspect" "6901c58c0bb81f3348a68b5f53ad8f616597f68ba85a52e711543db67fc6e711", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6901c58c0bb81f3348a68b5f53ad8f616597f68ba85a52e711543db67fc6e711", kill_on_drop: false }`
[INFO] [stdout] 6901c58c0bb81f3348a68b5f53ad8f616597f68ba85a52e711543db67fc6e711
