[INFO] fetching crate packed-vec 0.0.1-alpha.12...
[INFO] documenting packed-vec-0.0.1-alpha.12 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate packed-vec 0.0.1-alpha.12 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate packed-vec 0.0.1-alpha.12 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate packed-vec 0.0.1-alpha.12
[INFO] finished tweaking crates.io crate packed-vec 0.0.1-alpha.12
[INFO] tweaked toml for crates.io crate packed-vec 0.0.1-alpha.12 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prefix-varint v0.0.1-alpha.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f28bf931c8c1644ef36f4f13755ac5d400cf3c8e28acecadd891495f843797c
[INFO] running `Command { std: "docker" "start" "-a" "4f28bf931c8c1644ef36f4f13755ac5d400cf3c8e28acecadd891495f843797c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f28bf931c8c1644ef36f4f13755ac5d400cf3c8e28acecadd891495f843797c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f28bf931c8c1644ef36f4f13755ac5d400cf3c8e28acecadd891495f843797c", kill_on_drop: false }`
[INFO] [stdout] 4f28bf931c8c1644ef36f4f13755ac5d400cf3c8e28acecadd891495f843797c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5175cd99c6678e0251a386d079edeeb212a0a58558c9cb5bbcdf17b7840d20bf
[INFO] running `Command { std: "docker" "start" "-a" "5175cd99c6678e0251a386d079edeeb212a0a58558c9cb5bbcdf17b7840d20bf", kill_on_drop: false }`
[INFO] [stderr]     Checking prefix-varint v0.0.1-alpha.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/prefix-varint-0.0.1-alpha.6/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cursor_remaining)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prefix-varint` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5175cd99c6678e0251a386d079edeeb212a0a58558c9cb5bbcdf17b7840d20bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5175cd99c6678e0251a386d079edeeb212a0a58558c9cb5bbcdf17b7840d20bf", kill_on_drop: false }`
[INFO] [stdout] 5175cd99c6678e0251a386d079edeeb212a0a58558c9cb5bbcdf17b7840d20bf
