[INFO] fetching crate pc-timer 0.1.6...
[INFO] documenting pc-timer-0.1.6 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate pc-timer 0.1.6 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate pc-timer 0.1.6 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pc-timer 0.1.6
[INFO] finished tweaking crates.io crate pc-timer 0.1.6
[INFO] tweaked toml for crates.io crate pc-timer 0.1.6 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4f1895eed0d1ce1b79185c603423a9f8277f2b2cc1d5fd3bf3f1d636bf75ac4
[INFO] running `Command { std: "docker" "start" "-a" "c4f1895eed0d1ce1b79185c603423a9f8277f2b2cc1d5fd3bf3f1d636bf75ac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4f1895eed0d1ce1b79185c603423a9f8277f2b2cc1d5fd3bf3f1d636bf75ac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f1895eed0d1ce1b79185c603423a9f8277f2b2cc1d5fd3bf3f1d636bf75ac4", kill_on_drop: false }`
[INFO] [stdout] c4f1895eed0d1ce1b79185c603423a9f8277f2b2cc1d5fd3bf3f1d636bf75ac4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 824fa0f1e16b75006d8d76e82054d1cb73a3014d42ac9dab12c8ae8598631d37
[INFO] running `Command { std: "docker" "start" "-a" "824fa0f1e16b75006d8d76e82054d1cb73a3014d42ac9dab12c8ae8598631d37", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/memoffset-0.9.0/src/lib.rs:63:41
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![cfg_attr(feature = "unstable_const", feature(const_refs_to_cell))]
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `memoffset` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "824fa0f1e16b75006d8d76e82054d1cb73a3014d42ac9dab12c8ae8598631d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824fa0f1e16b75006d8d76e82054d1cb73a3014d42ac9dab12c8ae8598631d37", kill_on_drop: false }`
[INFO] [stdout] 824fa0f1e16b75006d8d76e82054d1cb73a3014d42ac9dab12c8ae8598631d37
