[INFO] fetching crate quibble 0.2.0...
[INFO] documenting quibble-0.2.0 against 1.66.0 for beta-1.67-rustdoc-3
[INFO] extracting crate quibble 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate quibble 0.2.0 on toolchain 1.66.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.66.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quibble 0.2.0
[INFO] finished tweaking crates.io crate quibble 0.2.0
[INFO] tweaked toml for crates.io crate quibble 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate quibble 0.2.0 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" "+1.66.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded portable-atomic v0.3.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+1.66.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9aea3e92568ce1810b50fe28f0ba48af188c40f69b2296c92ca5fbbf5ba153c
[INFO] running `Command { std: "docker" "start" "-a" "f9aea3e92568ce1810b50fe28f0ba48af188c40f69b2296c92ca5fbbf5ba153c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9aea3e92568ce1810b50fe28f0ba48af188c40f69b2296c92ca5fbbf5ba153c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9aea3e92568ce1810b50fe28f0ba48af188c40f69b2296c92ca5fbbf5ba153c", kill_on_drop: false }`
[INFO] [stdout] f9aea3e92568ce1810b50fe28f0ba48af188c40f69b2296c92ca5fbbf5ba153c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+1.66.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61c0f625e2313f54503f9ab0cd90af19a194355651ee9780ae1ed3b7a130489e
[INFO] running `Command { std: "docker" "start" "-a" "61c0f625e2313f54503f9ab0cd90af19a194355651ee9780ae1ed3b7a130489e", kill_on_drop: false }`
[INFO] [stderr] error: package `quibble v0.2.0 (/opt/rustwide/workdir)` cannot be built because it requires rustc 1.67 or newer, while the currently active rustc version is 1.66.0
[INFO] [stderr] 
[INFO] running `Command { std: "docker" "inspect" "61c0f625e2313f54503f9ab0cd90af19a194355651ee9780ae1ed3b7a130489e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61c0f625e2313f54503f9ab0cd90af19a194355651ee9780ae1ed3b7a130489e", kill_on_drop: false }`
[INFO] [stdout] 61c0f625e2313f54503f9ab0cd90af19a194355651ee9780ae1ed3b7a130489e