[INFO] fetching crate ipc-rs 0.4.2...
[INFO] documenting ipc-rs-0.4.2 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate ipc-rs 0.4.2 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ipc-rs 0.4.2 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 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-tc2/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" "+beta-2023-04-20" "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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_cbor v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4d5e01cd91e58b47ee04a648d8c30c91717fe4729e9c89fb31b2523121ec192b
[INFO] running `Command { std: "docker" "start" "-a" "4d5e01cd91e58b47ee04a648d8c30c91717fe4729e9c89fb31b2523121ec192b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d5e01cd91e58b47ee04a648d8c30c91717fe4729e9c89fb31b2523121ec192b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5e01cd91e58b47ee04a648d8c30c91717fe4729e9c89fb31b2523121ec192b", kill_on_drop: false }`
[INFO] [stdout] 4d5e01cd91e58b47ee04a648d8c30c91717fe4729e9c89fb31b2523121ec192b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c68e9924e3d478b6918862f4f9c713842bda48917febeb019d34d4d932f50edc
[INFO] running `Command { std: "docker" "start" "-a" "c68e9924e3d478b6918862f4f9c713842bda48917febeb019d34d4d932f50edc", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking half v1.8.2
[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 beta 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=5895aa11a44fdc81 -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-bbc63b178393e69c.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-5c67045dcc1b4ccb.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-70dc2ac3a96c5472.rmeta --extern serde_cbor=/opt/rustwide/target/debug/deps/libserde_cbor-b3364551ed128389.rmeta --cap-lints=warn --crate-version 0.4.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c68e9924e3d478b6918862f4f9c713842bda48917febeb019d34d4d932f50edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c68e9924e3d478b6918862f4f9c713842bda48917febeb019d34d4d932f50edc", kill_on_drop: false }`
[INFO] [stdout] c68e9924e3d478b6918862f4f9c713842bda48917febeb019d34d4d932f50edc
