[INFO] fetching crate ipc-rs 0.4.2...
[INFO] documenting ipc-rs-0.4.2 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate ipc-rs 0.4.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ipc-rs 0.4.2 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 ipc-rs 0.4.2
[INFO] finished tweaking crates.io crate ipc-rs 0.4.2
[INFO] tweaked toml for crates.io crate ipc-rs 0.4.2 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] 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] f94ff8f8c44c4d5282502d0004e12b020ae1b08eff60fcc3b9c9982ef412a820
[INFO] running `Command { std: "docker" "start" "-a" "f94ff8f8c44c4d5282502d0004e12b020ae1b08eff60fcc3b9c9982ef412a820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f94ff8f8c44c4d5282502d0004e12b020ae1b08eff60fcc3b9c9982ef412a820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f94ff8f8c44c4d5282502d0004e12b020ae1b08eff60fcc3b9c9982ef412a820", kill_on_drop: false }`
[INFO] [stdout] f94ff8f8c44c4d5282502d0004e12b020ae1b08eff60fcc3b9c9982ef412a820
[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] 81042e240a07a89a32d69ae196734959851f44df27eb60c56d77281804b2aee8
[INFO] running `Command { std: "docker" "start" "-a" "81042e240a07a89a32d69ae196734959851f44df27eb60c56d77281804b2aee8", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]  Documenting ipc-rs v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(associated_type_defaults)]
[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 document `ipc-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name ipc_rs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=062b4f19c18e97f6 -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-4467f3ffc13087c9.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-9abc40ba5c3b8fb6.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b6956e1a4b2bd63a.rmeta --extern serde_cbor=/opt/rustwide/target/debug/deps/libserde_cbor-ef3ac4a44c248778.rmeta --cap-lints=warn --crate-version 0.4.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "81042e240a07a89a32d69ae196734959851f44df27eb60c56d77281804b2aee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81042e240a07a89a32d69ae196734959851f44df27eb60c56d77281804b2aee8", kill_on_drop: false }`
[INFO] [stdout] 81042e240a07a89a32d69ae196734959851f44df27eb60c56d77281804b2aee8
