[INFO] fetching crate protobuf-codegen-no-elision 2.0.4...
[INFO] documenting protobuf-codegen-no-elision-2.0.4 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate protobuf-codegen-no-elision 2.0.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate protobuf-codegen-no-elision 2.0.4 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate protobuf-codegen-no-elision 2.0.4
[INFO] finished tweaking crates.io crate protobuf-codegen-no-elision 2.0.4
[INFO] tweaked toml for crates.io crate protobuf-codegen-no-elision 2.0.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80aa8978fa8681ad53d497e5b386f1e9eb72d6d43a98935e8a26b8d4806339b1
[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" "80aa8978fa8681ad53d497e5b386f1e9eb72d6d43a98935e8a26b8d4806339b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80aa8978fa8681ad53d497e5b386f1e9eb72d6d43a98935e8a26b8d4806339b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80aa8978fa8681ad53d497e5b386f1e9eb72d6d43a98935e8a26b8d4806339b1", kill_on_drop: false }`
[INFO] [stdout] 80aa8978fa8681ad53d497e5b386f1e9eb72d6d43a98935e8a26b8d4806339b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02477b3b6895067ccc0b98d608459a62e77f5dc0db539ac4351250004c89222b
[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" "02477b3b6895067ccc0b98d608459a62e77f5dc0db539ac4351250004c89222b", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v2.0.4
[INFO] [stderr]     Checking protobuf-codegen-no-elision v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting protobuf-codegen-no-elision v2.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/message.rs:268:69
[INFO] [stdout]     |
[INFO] [stdout] 268 |                     self.write_descriptor_field("fields", field, w);;
[INFO] [stdout]     |                                                                     ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/message.rs:268:69
[INFO] [stdout]     |
[INFO] [stdout] 268 |                     self.write_descriptor_field("fields", field, w);;
[INFO] [stdout]     |                                                                     ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/code_writer.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 |     writer: &'a mut (Write + 'a),
[INFO] [stdout]    |                      ^^^^^^^^^^ help: use `dyn`: `dyn Write + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/code_writer.rs:18:32
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(writer: &'a mut Write) -> CodeWriter<'a> {
[INFO] [stdout]    |                                ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.81s
[INFO] running `Command { std: "docker" "inspect" "02477b3b6895067ccc0b98d608459a62e77f5dc0db539ac4351250004c89222b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02477b3b6895067ccc0b98d608459a62e77f5dc0db539ac4351250004c89222b", kill_on_drop: false }`
[INFO] [stdout] 02477b3b6895067ccc0b98d608459a62e77f5dc0db539ac4351250004c89222b