[INFO] fetching crate erdos 0.4.0...
[INFO] documenting erdos-0.4.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate erdos 0.4.0 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate erdos 0.4.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate erdos 0.4.0
[INFO] finished tweaking crates.io crate erdos 0.4.0
[INFO] tweaked toml for crates.io crate erdos 0.4.0 written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19f52fb1e38be392ced2ce468b5a534cefb911945f21e0c55b13853f4b80bfcd
[INFO] running `Command { std: "docker" "start" "-a" "19f52fb1e38be392ced2ce468b5a534cefb911945f21e0c55b13853f4b80bfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19f52fb1e38be392ced2ce468b5a534cefb911945f21e0c55b13853f4b80bfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f52fb1e38be392ced2ce468b5a534cefb911945f21e0c55b13853f4b80bfcd", kill_on_drop: false }`
[INFO] [stdout] 19f52fb1e38be392ced2ce468b5a534cefb911945f21e0c55b13853f4b80bfcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c685fc468803cab24cf207cfcfec5888507f979c7272231c3db896e8d20ba3c
[INFO] running `Command { std: "docker" "start" "-a" "4c685fc468803cab24cf207cfcfec5888507f979c7272231c3db896e8d20ba3c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling abomonation_derive v0.5.0
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[INFO] [stderr]     Checking tracing-subscriber v0.3.11
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[INFO] [stderr]     Checking tracing-appender v0.2.2
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[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking tokio-serde-bincode v0.2.1
[INFO] [stderr]  Documenting erdos v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:139:1
[INFO] [stdout]     |
[INFO] [stdout] 139 | #![feature(specialization)]
[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:140:1
[INFO] [stdout]     |
[INFO] [stdout] 140 | #![feature(box_into_pin)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `erdos`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name erdos src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7c1db8bd8cc689fa -L dependency=/opt/rustwide/target/debug/deps --extern abomonation=/opt/rustwide/target/debug/deps/libabomonation-d5309a14d44551cf.rmeta --extern abomonation_derive=/opt/rustwide/target/debug/deps/libabomonation_derive-4d80e234036a253d.so --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-8ebf2e0bc4105a3e.so --extern bincode=/opt/rustwide/target/debug/deps/libbincode-f800537337283ecd.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-7c274f399d426ec2.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-57de1f6d7c9c6f6c.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-1142797c599e6439.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-2d32cf426b606b94.rmeta --extern futures_delay_queue=/opt/rustwide/target/debug/deps/libfutures_delay_queue-74b6c9783b005823.rmeta --extern futures_intrusive=/opt/rustwide/target/debug/deps/libfutures_intrusive-811865517a2fcc5b.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-717069d3a0f2b1eb.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-f09fca34c233de76.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-d952c02c51848cda.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-8c59ebd94109a87b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-311e13e6ee1f9772.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-7f5f9ab2453417da.rmeta --extern tokio_serde_bincode=/opt/rustwide/target/debug/deps/libtokio_serde_bincode-70ec1386d2625894.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-af27d2f66b0a7185.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-50ac2cb6cb63a92f.rmeta --extern tracing_appender=/opt/rustwide/target/debug/deps/libtracing_appender-154718045ec49135.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-9cf9af1fe1e03cb2.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-e820a2c327bd6d31.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4c685fc468803cab24cf207cfcfec5888507f979c7272231c3db896e8d20ba3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c685fc468803cab24cf207cfcfec5888507f979c7272231c3db896e8d20ba3c", kill_on_drop: false }`
[INFO] [stdout] 4c685fc468803cab24cf207cfcfec5888507f979c7272231c3db896e8d20ba3c