[INFO] fetching crate paxakos 0.2.0...
[INFO] documenting paxakos-0.2.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate paxakos 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate paxakos 0.2.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate paxakos 0.2.0
[INFO] finished tweaking crates.io crate paxakos 0.2.0
[INFO] tweaked toml for crates.io crate paxakos 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate paxakos 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a1fb0003f6fdad5a3f01a490a2e64636bf46ce5e09e216f2c6613579843c927
[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" "4a1fb0003f6fdad5a3f01a490a2e64636bf46ce5e09e216f2c6613579843c927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a1fb0003f6fdad5a3f01a490a2e64636bf46ce5e09e216f2c6613579843c927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a1fb0003f6fdad5a3f01a490a2e64636bf46ce5e09e216f2c6613579843c927", kill_on_drop: false }`
[INFO] [stdout] 4a1fb0003f6fdad5a3f01a490a2e64636bf46ce5e09e216f2c6613579843c927
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74eca54a57f67a7700556e0506d447c2a3cc8df030dca7d2f911642333314e5a
[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" "74eca54a57f67a7700556e0506d447c2a3cc8df030dca7d2f911642333314e5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]    Compiling blake3 v0.3.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling async-trait v0.1.31
[INFO] [stderr]     Checking tracing v0.1.14
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking pin-project v0.4.17
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]  Documenting paxakos 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:541:1
[INFO] [stdout]     |
[INFO] [stdout] 541 | #![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:542:1
[INFO] [stdout]     |
[INFO] [stdout] 542 | #![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:543:1
[INFO] [stdout]     |
[INFO] [stdout] 543 | #![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:544:1
[INFO] [stdout]     |
[INFO] [stdout] 544 | #![feature(range_is_empty)]
[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:545:1
[INFO] [stdout]     |
[INFO] [stdout] 545 | #![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:546:1
[INFO] [stdout]     |
[INFO] [stdout] 546 | #![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 7 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-9214928a8832fb45.so --extern bincode=/opt/rustwide/target/debug/deps/libbincode-39794f04b6b8d0e3.rmeta --extern blake3=/opt/rustwide/target/debug/deps/libblake3-12ee3dbd0c7132f5.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-241bdae2175a4621.rmeta --extern futures_timer=/opt/rustwide/target/debug/deps/libfutures_timer-c01baecaf3d306ba.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-a96855fb96f6d0d8.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-d0136104f6983aa9.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9af3cb48c2eb0790.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-36ef3f1dd54a5248.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-afbe2ef3e2b34966.rmeta --cap-lints=warn --crate-version 0.2.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "74eca54a57f67a7700556e0506d447c2a3cc8df030dca7d2f911642333314e5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74eca54a57f67a7700556e0506d447c2a3cc8df030dca7d2f911642333314e5a", kill_on_drop: false }`
[INFO] [stdout] 74eca54a57f67a7700556e0506d447c2a3cc8df030dca7d2f911642333314e5a
