[INFO] fetching crate eth_trie_utils 0.6.0...
[INFO] documenting eth_trie_utils-0.6.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate eth_trie_utils 0.6.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate eth_trie_utils 0.6.0 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 eth_trie_utils 0.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate eth_trie_utils 0.6.0
[INFO] tweaked toml for crates.io crate eth_trie_utils 0.6.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate eth_trie_utils 0.6.0 already has a lockfile, it will not be regenerated
[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 keccak-hash v0.10.0
[INFO] [stderr]   Downloaded eth_trie v0.1.0
[INFO] [stderr]   Downloaded parking_lot v0.8.0
[INFO] [stderr]   Downloaded rlp v0.3.0
[INFO] [stderr]   Downloaded parking_lot_core v0.5.0
[INFO] [stderr]   Downloaded lock_api v0.2.0
[INFO] [stderr]   Downloaded hashbrown v0.3.1
[INFO] [stderr]   Downloaded primitive-types v0.10.1
[INFO] [stderr]   Downloaded rlp-derive v0.1.0
[INFO] [stderr]   Downloaded keccak-hash v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e235a5261074d04c4a26e97592793d0c1f128c0431de550b40bfacbf005bb023
[INFO] running `Command { std: "docker" "start" "-a" "e235a5261074d04c4a26e97592793d0c1f128c0431de550b40bfacbf005bb023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e235a5261074d04c4a26e97592793d0c1f128c0431de550b40bfacbf005bb023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e235a5261074d04c4a26e97592793d0c1f128c0431de550b40bfacbf005bb023", kill_on_drop: false }`
[INFO] [stdout] e235a5261074d04c4a26e97592793d0c1f128c0431de550b40bfacbf005bb023
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e1d223e5dea99e0bf9316641e574c88dda8141ff17ad5b808786161599830004
[INFO] running `Command { std: "docker" "start" "-a" "e1d223e5dea99e0bf9316641e574c88dda8141ff17ad5b808786161599830004", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking parking_lot_core v0.9.7
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking impl-rlp v0.3.0
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]    Compiling enum-as-inner v0.5.1
[INFO] [stderr]     Checking impl-serde v0.4.0
[INFO] [stderr]     Checking primitive-types v0.12.1
[INFO] [stderr]     Checking ethbloom v0.13.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking ethereum-types v0.14.1
[INFO] [stderr]     Checking keccak-hash v0.10.0
[INFO] [stderr]  Documenting eth_trie_utils v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(return_position_impl_trait_in_trait)]
[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 `eth_trie_utils`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name eth_trie_utils src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=46011bfc977397c4 -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-cdba088f09c8631e.rmeta --extern enum_as_inner=/opt/rustwide/target/debug/deps/libenum_as_inner-9962e69753fac6e7.so --extern ethereum_types=/opt/rustwide/target/debug/deps/libethereum_types-1ce6443a76ea845b.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-7658a505e7fe0549.rmeta --extern keccak_hash=/opt/rustwide/target/debug/deps/libkeccak_hash-08ec4df64b18dd97.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-83c76fb4ff61e17e.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-3906fe4936ddc04f.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-2e469351b0efb20d.rmeta --extern rlp=/opt/rustwide/target/debug/deps/librlp-ef3753c571ea0f97.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dd20c84000f82882.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-b839f3f80c6bc09b.rmeta --extern uint=/opt/rustwide/target/debug/deps/libuint-cd49afba5468f57c.rmeta --cap-lints=warn --crate-version 0.6.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e1d223e5dea99e0bf9316641e574c88dda8141ff17ad5b808786161599830004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d223e5dea99e0bf9316641e574c88dda8141ff17ad5b808786161599830004", kill_on_drop: false }`
[INFO] [stdout] e1d223e5dea99e0bf9316641e574c88dda8141ff17ad5b808786161599830004
