[INFO] fetching crate protobuf-codegen3 2.28.2...
[INFO] checking protobuf-codegen3-2.28.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate protobuf-codegen3 2.28.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate protobuf-codegen3 2.28.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate protobuf-codegen3 2.28.2
[INFO] finished tweaking crates.io crate protobuf-codegen3 2.28.2
[INFO] tweaked toml for crates.io crate protobuf-codegen3 2.28.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate protobuf-codegen3 2.28.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6bea6c27d2bd8c4c92cbf8b48fd96024ba0664544fc5086e47e5de60d730735
[INFO] running `Command { std: "docker" "start" "-a" "a6bea6c27d2bd8c4c92cbf8b48fd96024ba0664544fc5086e47e5de60d730735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6bea6c27d2bd8c4c92cbf8b48fd96024ba0664544fc5086e47e5de60d730735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6bea6c27d2bd8c4c92cbf8b48fd96024ba0664544fc5086e47e5de60d730735", kill_on_drop: false }`
[INFO] [stdout] a6bea6c27d2bd8c4c92cbf8b48fd96024ba0664544fc5086e47e5de60d730735
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac9ca2ce64335000fee68b3f328d9abbfbd2c8a6b9441a6d6b12e9ceef80d2b5
[INFO] running `Command { std: "docker" "start" "-a" "ac9ca2ce64335000fee68b3f328d9abbfbd2c8a6b9441a6d6b12e9ceef80d2b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]     Checking protobuf-codegen3 v2.28.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/field/mod.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     Message(
[INFO] [stdout]     |     ------- field in this variant
[INFO] [stdout] 234 |         String,
[INFO] [stdout] 235 |         String,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 235 |         (),
[INFO] [stdout]     |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/field/mod.rs:240:18
[INFO] [stdout]     |
[INFO] [stdout] 240 |     Enum(String, String, RustIdent),
[INFO] [stdout]     |     ----         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 240 |     Enum(String, (), RustIdent),
[INFO] [stdout]     |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/field/mod.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     Message(
[INFO] [stdout]     |     ------- field in this variant
[INFO] [stdout] 234 |         String,
[INFO] [stdout] 235 |         String,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 235 |         (),
[INFO] [stdout]     |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]    --> src/field/mod.rs:240:18
[INFO] [stdout]     |
[INFO] [stdout] 240 |     Enum(String, String, RustIdent),
[INFO] [stdout]     |     ----         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 240 |     Enum(String, (), RustIdent),
[INFO] [stdout]     |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.27s
[INFO] running `Command { std: "docker" "inspect" "ac9ca2ce64335000fee68b3f328d9abbfbd2c8a6b9441a6d6b12e9ceef80d2b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac9ca2ce64335000fee68b3f328d9abbfbd2c8a6b9441a6d6b12e9ceef80d2b5", kill_on_drop: false }`
[INFO] [stdout] ac9ca2ce64335000fee68b3f328d9abbfbd2c8a6b9441a6d6b12e9ceef80d2b5