[INFO] fetching crate erdos 0.4.0...
[INFO] documenting erdos-0.4.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate erdos 0.4.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate erdos 0.4.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] [stderr]   Downloaded abomonation_derive v0.5.0
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[INFO] [stderr]   Downloaded ascii v1.1.0
[INFO] [stderr]   Downloaded rosrust v0.9.11
[INFO] [stderr]   Downloaded futures-intrusive v0.4.2
[INFO] [stderr]   Downloaded xml-rs v0.3.6
[INFO] [stderr]   Downloaded tracing-appender v0.2.3
[INFO] [stderr]   Downloaded serde-xml-rs v0.2.1
[INFO] [stderr]   Downloaded xml-rpc v0.0.12
[INFO] [stderr]   Downloaded serde_bytes v0.10.5
[INFO] [stderr]   Downloaded gzip-header v1.0.0
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[INFO] [stderr]   Downloaded tokio-serde v0.3.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92042d3d6c0cb2ffcc56371f56bcd9a077fc7e517586a69b69b5850bd073758b
[INFO] running `Command { std: "docker" "start" "-a" "92042d3d6c0cb2ffcc56371f56bcd9a077fc7e517586a69b69b5850bd073758b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92042d3d6c0cb2ffcc56371f56bcd9a077fc7e517586a69b69b5850bd073758b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92042d3d6c0cb2ffcc56371f56bcd9a077fc7e517586a69b69b5850bd073758b", kill_on_drop: false }`
[INFO] [stdout] 92042d3d6c0cb2ffcc56371f56bcd9a077fc7e517586a69b69b5850bd073758b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9397f2430cb9cdf25c0bdb2ef0213d48cdcfbc4c0e9069e117cbda010adca782
[INFO] running `Command { std: "docker" "start" "-a" "9397f2430cb9cdf25c0bdb2ef0213d48cdcfbc4c0e9069e117cbda010adca782", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
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[INFO] [stderr]     Checking linux-raw-sys v0.4.13
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[INFO] [stderr]    Compiling synstructure v0.12.6
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[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tracing-appender v0.2.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking polling v3.4.0
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]     Checking async-io v2.3.1
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking serde v1.0.196
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking futures-delay-queue v0.4.2
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking bincode v1.3.3
[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: aborting due to 2 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: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/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=b5a686c495b98fba -L dependency=/opt/rustwide/target/debug/deps --extern abomonation=/opt/rustwide/target/debug/deps/libabomonation-3fde581bdc763c35.rmeta --extern abomonation_derive=/opt/rustwide/target/debug/deps/libabomonation_derive-16b77afac22d5ad6.so --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-dc61d5b4f9150565.so --extern bincode=/opt/rustwide/target/debug/deps/libbincode-79b42a629d4bcd9c.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4d0457ff00ff859b.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-83cef452744526c5.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-8e02b1987934d47b.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-5b7a19b9cba178e0.rmeta --extern futures_delay_queue=/opt/rustwide/target/debug/deps/libfutures_delay_queue-cf1c5426ed4639aa.rmeta --extern futures_intrusive=/opt/rustwide/target/debug/deps/libfutures_intrusive-fa9d3eba077d5c97.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-8d311875b299ad27.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-9989da3b216143b9.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-f70f68788f91f6dd.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-6f7f9f3fb725062c.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-7e5cc45146731dac.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-316da11d7a4927c9.rmeta --extern tokio_serde_bincode=/opt/rustwide/target/debug/deps/libtokio_serde_bincode-31fd169bf679da30.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-1d64e0f72e1b69c0.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-b8241a417ebea143.rmeta --extern tracing_appender=/opt/rustwide/target/debug/deps/libtracing_appender-44c630c71bdc2962.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-a45435111f6212ca.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-bc490a1b9ec2f7e2.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9397f2430cb9cdf25c0bdb2ef0213d48cdcfbc4c0e9069e117cbda010adca782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9397f2430cb9cdf25c0bdb2ef0213d48cdcfbc4c0e9069e117cbda010adca782", kill_on_drop: false }`
[INFO] [stdout] 9397f2430cb9cdf25c0bdb2ef0213d48cdcfbc4c0e9069e117cbda010adca782
