[INFO] fetching crate mlcg 0.0.1...
[INFO] checking mlcg-0.0.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate mlcg 0.0.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate mlcg 0.0.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mlcg 0.0.1
[INFO] finished tweaking crates.io crate mlcg 0.0.1
[INFO] tweaked toml for crates.io crate mlcg 0.0.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mlcg-derive v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 381c635133ae239a4d743265b802e67e8c9f6263efb66d44c1582989791449fd
[INFO] running `Command { std: "docker" "start" "-a" "381c635133ae239a4d743265b802e67e8c9f6263efb66d44c1582989791449fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "381c635133ae239a4d743265b802e67e8c9f6263efb66d44c1582989791449fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "381c635133ae239a4d743265b802e67e8c9f6263efb66d44c1582989791449fd", kill_on_drop: false }`
[INFO] [stdout] 381c635133ae239a4d743265b802e67e8c9f6263efb66d44c1582989791449fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7da5e60af8e2a62dee349a505002c7d207f3551f4afbf362c024242bd140b0a9
[INFO] running `Command { std: "docker" "start" "-a" "7da5e60af8e2a62dee349a505002c7d207f3551f4afbf362c024242bd140b0a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]    Compiling mlcg-derive v0.0.1
[INFO] [stderr]     Checking mlcg v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `appends` is never read
[INFO] [stdout]    --> src/processor.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub(crate) struct RawProcessor {
[INFO] [stdout]     |                   ------------ field in this struct
[INFO] [stdout] 134 |     pub main: Block,
[INFO] [stdout] 135 |     pub appends: Vec<Block>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RawProcessor` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `appends` is never read
[INFO] [stdout]    --> src/processor.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 133 | pub(crate) struct RawProcessor {
[INFO] [stdout]     |                   ------------ field in this struct
[INFO] [stdout] 134 |     pub main: Block,
[INFO] [stdout] 135 |     pub appends: Vec<Block>,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RawProcessor` has derived impls for the traits `Default` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "7da5e60af8e2a62dee349a505002c7d207f3551f4afbf362c024242bd140b0a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7da5e60af8e2a62dee349a505002c7d207f3551f4afbf362c024242bd140b0a9", kill_on_drop: false }`
[INFO] [stdout] 7da5e60af8e2a62dee349a505002c7d207f3551f4afbf362c024242bd140b0a9