[INFO] fetching crate paxakos 0.5.0...
[INFO] documenting paxakos-0.5.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate paxakos 0.5.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate paxakos 0.5.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate paxakos 0.5.0
[INFO] finished tweaking crates.io crate paxakos 0.5.0
[INFO] tweaked toml for crates.io crate paxakos 0.5.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb7601abda49bcf82d5944dcd6fcfe82904fde7e321b2d82fe6b954303dbe65a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bb7601abda49bcf82d5944dcd6fcfe82904fde7e321b2d82fe6b954303dbe65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb7601abda49bcf82d5944dcd6fcfe82904fde7e321b2d82fe6b954303dbe65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb7601abda49bcf82d5944dcd6fcfe82904fde7e321b2d82fe6b954303dbe65a", kill_on_drop: false }`
[INFO] [stdout] bb7601abda49bcf82d5944dcd6fcfe82904fde7e321b2d82fe6b954303dbe65a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 624f7727d9d1cd31505a86c2b016fa66574fca8a89a52613d66a53b365c6a143
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "624f7727d9d1cd31505a86c2b016fa66574fca8a89a52613d66a53b365c6a143", kill_on_drop: false }`
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking serde v1.0.127
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]  Documenting paxakos v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:369:1
[INFO] [stdout]     |
[INFO] [stdout] 369 | #![feature(array_windows)]
[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:370:1
[INFO] [stdout]     |
[INFO] [stdout] 370 | #![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:371:1
[INFO] [stdout]     |
[INFO] [stdout] 371 | #![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:372:1
[INFO] [stdout]     |
[INFO] [stdout] 372 | #![feature(duration_zero)]
[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:373:1
[INFO] [stdout]     |
[INFO] [stdout] 373 | #![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:374:1
[INFO] [stdout]     |
[INFO] [stdout] 374 | #![feature(never_type)]
[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:375:1
[INFO] [stdout]     |
[INFO] [stdout] 375 | #![feature(step_trait)]
[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:376:1
[INFO] [stdout]     |
[INFO] [stdout] 376 | #![feature(with_options)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 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 `paxakos`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name paxakos src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-e856fd626e604e49.so --extern bincode=/opt/rustwide/target/debug/deps/libbincode-da506579228bf741.rmeta --extern blake3=/opt/rustwide/target/debug/deps/libblake3-177752a74912a4e7.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-012c51f11abccf6c.rmeta --extern futures_timer=/opt/rustwide/target/debug/deps/libfutures_timer-73ca8c041c4cd90e.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-19eddd40197aec2d.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-c0418aa164536a40.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c103727603ef8bf3.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-1f20c4f5ff376b51.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-e6f46b178d972a75.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-b4f94ba70ba342f9.rmeta --cap-lints=warn --crate-version 0.5.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "624f7727d9d1cd31505a86c2b016fa66574fca8a89a52613d66a53b365c6a143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624f7727d9d1cd31505a86c2b016fa66574fca8a89a52613d66a53b365c6a143", kill_on_drop: false }`
[INFO] [stdout] 624f7727d9d1cd31505a86c2b016fa66574fca8a89a52613d66a53b365c6a143
