[INFO] fetching crate mainline-dht 0.2.0...
[INFO] documenting mainline-dht-0.2.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate mainline-dht 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate mainline-dht 0.2.0 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 mainline-dht 0.2.0
[INFO] finished tweaking crates.io crate mainline-dht 0.2.0
[INFO] tweaked toml for crates.io crate mainline-dht 0.2.0 written to /workspace/builds/worker-7-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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_bencode v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ab94708fd1c1927f4bfde90c0acfd51df9d99afed31e458835785619eebdfaf3
[INFO] running `Command { std: "docker" "start" "-a" "ab94708fd1c1927f4bfde90c0acfd51df9d99afed31e458835785619eebdfaf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab94708fd1c1927f4bfde90c0acfd51df9d99afed31e458835785619eebdfaf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab94708fd1c1927f4bfde90c0acfd51df9d99afed31e458835785619eebdfaf3", kill_on_drop: false }`
[INFO] [stdout] ab94708fd1c1927f4bfde90c0acfd51df9d99afed31e458835785619eebdfaf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b55483515b399e7fdf2b5825912c70daff0e4a3fe442c33c158221398b965429
[INFO] running `Command { std: "docker" "start" "-a" "b55483515b399e7fdf2b5825912c70daff0e4a3fe442c33c158221398b965429", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling rustix v0.37.18
[INFO] [stderr]     Checking io-lifetimes v1.0.10
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking thiserror v1.0.40
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]     Checking polling v2.8.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking async-io v1.13.0
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking serde v1.0.160
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking serde_bytes v0.11.9
[INFO] [stderr]     Checking serde_bencode v0.2.3
[INFO] [stderr]  Documenting mainline-dht v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(btree_drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(map_first_last)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(duration_constants)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `mainline-dht`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name mainline_dht src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=42e16ab3a62b42a2 -L dependency=/opt/rustwide/target/debug/deps --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-50806311c814ebd7.rmeta --extern async_stream=/opt/rustwide/target/debug/deps/libasync_stream-7b9c64470a823adc.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-e76a7761eca3d29b.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-7658a505e7fe0549.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-933d56e3b19d0dce.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-eeffde7c4f935a5e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0bc9d1a5d13f66c2.rmeta --extern serde_bencode=/opt/rustwide/target/debug/deps/libserde_bencode-c37c8b9aeeac5d0e.rmeta --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-f3ef6b652f2c1467.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-ef8ec6e81891414c.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b55483515b399e7fdf2b5825912c70daff0e4a3fe442c33c158221398b965429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b55483515b399e7fdf2b5825912c70daff0e4a3fe442c33c158221398b965429", kill_on_drop: false }`
[INFO] [stdout] b55483515b399e7fdf2b5825912c70daff0e4a3fe442c33c158221398b965429
