[INFO] fetching crate lnd_grpc_rust 2.7.0...
[INFO] checking lnd_grpc_rust-2.7.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate lnd_grpc_rust 2.7.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate lnd_grpc_rust 2.7.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lnd_grpc_rust 2.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate lnd_grpc_rust 2.7.0
[INFO] tweaked toml for crates.io crate lnd_grpc_rust 2.7.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate lnd_grpc_rust 2.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tonic-openssl v0.2.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39f2306aa8eb3ee8af28a5432a62783f569cc9f4c8d5c5712d3e991f2875f2bc
[INFO] running `Command { std: "docker" "start" "-a" "39f2306aa8eb3ee8af28a5432a62783f569cc9f4c8d5c5712d3e991f2875f2bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39f2306aa8eb3ee8af28a5432a62783f569cc9f4c8d5c5712d3e991f2875f2bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39f2306aa8eb3ee8af28a5432a62783f569cc9f4c8d5c5712d3e991f2875f2bc", kill_on_drop: false }`
[INFO] [stdout] 39f2306aa8eb3ee8af28a5432a62783f569cc9f4c8d5c5712d3e991f2875f2bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20020ce4274aaf04d43cc65a90c6abcbc66a2d841dfc79e1426a6f3153e53eb9
[INFO] running `Command { std: "docker" "start" "-a" "20020ce4274aaf04d43cc65a90c6abcbc66a2d841dfc79e1426a6f3153e53eb9", kill_on_drop: false }`
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[INFO] [stderr]    Compiling tonic-build v0.7.2
[INFO] [stderr]    Compiling lnd_grpc_rust v2.7.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `lnd_grpc_rust v2.7.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/lnd_grpc_rust-dd7863deb412e47b/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-env-changed=LND_REPO_DIR
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Error: Custom { kind: Other, error: "protoc failed: lightning.proto: This file contains proto3 optional fields, but --experimental_allow_proto3_optional was not set.\n" }
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "20020ce4274aaf04d43cc65a90c6abcbc66a2d841dfc79e1426a6f3153e53eb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20020ce4274aaf04d43cc65a90c6abcbc66a2d841dfc79e1426a6f3153e53eb9", kill_on_drop: false }`
[INFO] [stdout] 20020ce4274aaf04d43cc65a90c6abcbc66a2d841dfc79e1426a6f3153e53eb9