[INFO] fetching crate mlcg 0.0.1...
[INFO] checking mlcg-0.0.1 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate mlcg 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mlcg 0.0.1 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "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-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d832ca253aa7ff4b61323dc8296cb461c8792e4aaab4be8ec75ae81201b0913
[INFO] running `Command { std: "docker" "start" "-a" "8d832ca253aa7ff4b61323dc8296cb461c8792e4aaab4be8ec75ae81201b0913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d832ca253aa7ff4b61323dc8296cb461c8792e4aaab4be8ec75ae81201b0913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d832ca253aa7ff4b61323dc8296cb461c8792e4aaab4be8ec75ae81201b0913", kill_on_drop: false }`
[INFO] [stdout] 8d832ca253aa7ff4b61323dc8296cb461c8792e4aaab4be8ec75ae81201b0913
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79dbf6536dee7983140d031d52d870e909e5657f230ee8a348f5d491a550c5cb
[INFO] running `Command { std: "docker" "start" "-a" "79dbf6536dee7983140d031d52d870e909e5657f230ee8a348f5d491a550c5cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling itoa v1.0.11
[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 4.76s
[INFO] running `Command { std: "docker" "inspect" "79dbf6536dee7983140d031d52d870e909e5657f230ee8a348f5d491a550c5cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79dbf6536dee7983140d031d52d870e909e5657f230ee8a348f5d491a550c5cb", kill_on_drop: false }`
[INFO] [stdout] 79dbf6536dee7983140d031d52d870e909e5657f230ee8a348f5d491a550c5cb