[INFO] fetching crate caffe2-proto 0.1.5-alpha.0...
[INFO] documenting caffe2-proto-0.1.5-alpha.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate caffe2-proto 0.1.5-alpha.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate caffe2-proto 0.1.5-alpha.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate caffe2-proto 0.1.5-alpha.0
[INFO] finished tweaking crates.io crate caffe2-proto 0.1.5-alpha.0
[INFO] tweaked toml for crates.io crate caffe2-proto 0.1.5-alpha.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded protobuf v2.28.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3bfbfa0a9037b515dd1642a4a68e2534b1e24f009d69ea597a60aa4a85d387ef
[INFO] running `Command { std: "docker" "start" "-a" "3bfbfa0a9037b515dd1642a4a68e2534b1e24f009d69ea597a60aa4a85d387ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bfbfa0a9037b515dd1642a4a68e2534b1e24f009d69ea597a60aa4a85d387ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bfbfa0a9037b515dd1642a4a68e2534b1e24f009d69ea597a60aa4a85d387ef", kill_on_drop: false }`
[INFO] [stdout] 3bfbfa0a9037b515dd1642a4a68e2534b1e24f009d69ea597a60aa4a85d387ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f699b50060de24d70c4cc7f529b77057b8e29da6d89697bcc41333083bd4c8e5
[INFO] running `Command { std: "docker" "start" "-a" "f699b50060de24d70c4cc7f529b77057b8e29da6d89697bcc41333083bd4c8e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]  Documenting caffe2-proto v0.1.5-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `string`
[INFO] [stdout]    --> src/util_proto_utils.rs:150:51
[INFO] [stdout]     |
[INFO] [stdout] 150 |   | IterableInputs default = std::initializer_list<string>
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::invalid_html_tags)]` on by default
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]     |
[INFO] [stdout] 150 |   | IterableInputs default = `std::initializer_list<string>`
[INFO] [stdout]     |                              +                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `string`
[INFO] [stdout]    --> src/util_proto_utils.rs:152:52
[INFO] [stdout]     |
[INFO] [stdout] 152 |   | IterableOutputs default = std::initializer_list<string>
[INFO] [stdout]     |                                                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]     |
[INFO] [stdout] 152 |   | IterableOutputs default = `std::initializer_list<string>`
[INFO] [stdout]     |                               +                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `Argument`
[INFO] [stdout]    --> src/util_proto_utils.rs:154:49
[INFO] [stdout]     |
[INFO] [stdout] 154 |   | IterableArgs default = std::initializer_list<Argument>
[INFO] [stdout]     |                                                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]     |
[INFO] [stdout] 154 |   | IterableArgs default = `std::initializer_list<Argument>`
[INFO] [stdout]     |                            +                               +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `string`
[INFO] [stdout]    --> src/util_proto_utils.rs:196:51
[INFO] [stdout]     |
[INFO] [stdout] 196 |   | IterableInputs default = std::initializer_list<string>
[INFO] [stdout]     |                                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]     |
[INFO] [stdout] 196 |   | IterableInputs default = `std::initializer_list<string>`
[INFO] [stdout]     |                              +                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `string`
[INFO] [stdout]    --> src/util_proto_utils.rs:198:52
[INFO] [stdout]     |
[INFO] [stdout] 198 |   | IterableOutputs default = std::initializer_list<string>
[INFO] [stdout]     |                                                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]     |
[INFO] [stdout] 198 |   | IterableOutputs default = `std::initializer_list<string>`
[INFO] [stdout]     |                               +                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `caffe2-proto`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name caffe2_proto src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d0623da83734464a -L dependency=/opt/rustwide/target/debug/deps --extern protobuf=/opt/rustwide/target/debug/deps/libprotobuf-b1c969d83c383e45.rmeta --cap-lints=warn --crate-version 0.1.5-alpha.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f699b50060de24d70c4cc7f529b77057b8e29da6d89697bcc41333083bd4c8e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f699b50060de24d70c4cc7f529b77057b8e29da6d89697bcc41333083bd4c8e5", kill_on_drop: false }`
[INFO] [stdout] f699b50060de24d70c4cc7f529b77057b8e29da6d89697bcc41333083bd4c8e5
