[INFO] fetching crate protobuf-codegen-pure 2.20.0...
[INFO] checking protobuf-codegen-pure-2.20.0 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate protobuf-codegen-pure 2.20.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate protobuf-codegen-pure 2.20.0 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate protobuf-codegen-pure 2.20.0
[INFO] finished tweaking crates.io crate protobuf-codegen-pure 2.20.0
[INFO] tweaked toml for crates.io crate protobuf-codegen-pure 2.20.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate protobuf-codegen-pure 2.20.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de200c2ca168fee053f344504dea5be42aa3c8d56f7cceb681343db2ccea1d36
[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" "de200c2ca168fee053f344504dea5be42aa3c8d56f7cceb681343db2ccea1d36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de200c2ca168fee053f344504dea5be42aa3c8d56f7cceb681343db2ccea1d36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de200c2ca168fee053f344504dea5be42aa3c8d56f7cceb681343db2ccea1d36", kill_on_drop: false }`
[INFO] [stdout] de200c2ca168fee053f344504dea5be42aa3c8d56f7cceb681343db2ccea1d36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 160d0ebc3d8cb8ddf4ac641702af6e4ae4338b75b5168ab7fc7ce9f81d2f239d
[INFO] running `Command { std: "docker" "start" "-a" "160d0ebc3d8cb8ddf4ac641702af6e4ae4338b75b5168ab7fc7ce9f81d2f239d", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v2.20.0
[INFO] [stderr]     Checking protobuf-codegen v2.20.0
[INFO] [stderr]     Checking protobuf-codegen-pure v2.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]     --> src/parser.rs:2073:35
[INFO] [stdout]      |
[INFO] [stdout] 2073 |         if let FieldType::Group { name, fields } = &mess.regular_fields_for_test()[1].typ {
[INFO] [stdout]      |                                   ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.55s
[INFO] running `Command { std: "docker" "inspect" "160d0ebc3d8cb8ddf4ac641702af6e4ae4338b75b5168ab7fc7ce9f81d2f239d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "160d0ebc3d8cb8ddf4ac641702af6e4ae4338b75b5168ab7fc7ce9f81d2f239d", kill_on_drop: false }`
[INFO] [stdout] 160d0ebc3d8cb8ddf4ac641702af6e4ae4338b75b5168ab7fc7ce9f81d2f239d