[INFO] fetching crate reqbit 0.1.3...
[INFO] checking reqbit-0.1.3 against 895980e0290783bb09b1ccf1b11f14eb09b10430 for pr-160186
[INFO] extracting crate reqbit 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate reqbit 0.1.3
[INFO] finished tweaking crates.io crate reqbit 0.1.3
[INFO] tweaked toml for crates.io crate reqbit 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate reqbit 0.1.3 on toolchain 895980e0290783bb09b1ccf1b11f14eb09b10430
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate reqbit 0.1.3 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" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2
[INFO] running `Command { std: "docker" "start" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2" "/opt/rustwide/cargo-home/bin/cargo" "+895980e0290783bb09b1ccf1b11f14eb09b10430" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
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[INFO] [stderr]     Checking reqbit v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `error` and `id` are never read
[INFO] [stdout]   --> src/engine/mod.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct RpcResponse {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 19 |     pub result: Value,
[INFO] [stdout] 20 |     pub error: Option<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 21 |     pub id: String,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RpcResponse` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `error` and `id` are never read
[INFO] [stdout]   --> src/engine/mod.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct RpcResponse {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 19 |     pub result: Value,
[INFO] [stdout] 20 |     pub error: Option<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 21 |     pub id: String,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RpcResponse` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 54.29s
[INFO] running `Command { std: "docker" "inspect" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2", kill_on_drop: false }`
[INFO] [stdout] 7af9adb5ad0b96724b7d2658baf751fb94cc36836273bb35b00ce453f1e802c2