[INFO] fetching crate pack-it 0.2.2...
[INFO] documenting pack-it-0.2.2 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate pack-it 0.2.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate pack-it 0.2.2 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 pack-it 0.2.2
[INFO] finished tweaking crates.io crate pack-it 0.2.2
[INFO] tweaked toml for crates.io crate pack-it 0.2.2 written to /workspace/builds/worker-6-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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded streaming-decompression v0.1.2
[INFO] [stderr]   Downloaded streaming-iterator v0.1.9
[INFO] [stderr]   Downloaded seq-macro v0.3.5
[INFO] [stderr]   Downloaded parquet-format-safe v0.2.4
[INFO] [stderr]   Downloaded parquet2 v0.17.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 70d89282f0ce01881533b5572a71c7d0fafe8783db7f73aea5737cce892b4571
[INFO] running `Command { std: "docker" "start" "-a" "70d89282f0ce01881533b5572a71c7d0fafe8783db7f73aea5737cce892b4571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70d89282f0ce01881533b5572a71c7d0fafe8783db7f73aea5737cce892b4571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70d89282f0ce01881533b5572a71c7d0fafe8783db7f73aea5737cce892b4571", kill_on_drop: false }`
[INFO] [stdout] 70d89282f0ce01881533b5572a71c7d0fafe8783db7f73aea5737cce892b4571
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 17eef6b95cc4e07a172962a7f37a9f6245a0a9b31c8840037bff32ab8c126f26
[INFO] running `Command { std: "docker" "start" "-a" "17eef6b95cc4e07a172962a7f37a9f6245a0a9b31c8840037bff32ab8c126f26", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]    Compiling jobserver v0.1.28
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]    Compiling zstd-safe v6.0.6
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking alloc-stdlib v0.2.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking brotli-decompressor v2.5.1
[INFO] [stderr]    Compiling ahash v0.8.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking array-init-cursor v0.2.0
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]    Compiling arrow2 v0.16.0
[INFO] [stderr]     Checking planus v0.3.1
[INFO] [stderr]     Checking streaming-decompression v0.1.2
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]    Compiling zstd-sys v2.0.9+zstd.1.5.5
[INFO] [stderr]    Compiling lz4-sys v1.9.4
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking brotli v3.4.0
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking chrono v0.4.34
[INFO] [stderr]     Checking dyn-clone v1.0.16
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking foreign_vec v0.1.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking ethnum v1.5.0
[INFO] [stderr]     Checking hash_hasher v2.0.3
[INFO] [stderr]     Checking streaming-iterator v0.1.9
[INFO] [stderr]     Checking simdutf8 v0.1.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.11
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling bytemuck_derive v1.5.0
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking bytemuck v1.14.3
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking parquet-format-safe v0.2.4
[INFO] [stderr]     Checking lz4 v1.24.0
[INFO] [stderr]     Checking zstd v0.12.4
[INFO] [stderr]     Checking arrow-format v0.8.1
[INFO] [stderr]     Checking parquet2 v0.17.2
[INFO] [stderr]  Documenting pack-it v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_blocks)]
[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 document `pack-it`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name pack_it src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4d1ecc8f50e937d4 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-d4cbb8ebf8c675b1.rmeta --extern arrow2=/opt/rustwide/target/debug/deps/libarrow2-2c2bf99e93d0f7ff.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-10fdae1df786920e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c2b9fe8f0bb60ac5.rmeta --cap-lints=warn --crate-version 0.2.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "17eef6b95cc4e07a172962a7f37a9f6245a0a9b31c8840037bff32ab8c126f26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17eef6b95cc4e07a172962a7f37a9f6245a0a9b31c8840037bff32ab8c126f26", kill_on_drop: false }`
[INFO] [stdout] 17eef6b95cc4e07a172962a7f37a9f6245a0a9b31c8840037bff32ab8c126f26
