[INFO] fetching crate inkling 0.12.5...
[INFO] checking inkling-0.12.5 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate inkling 0.12.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate inkling 0.12.5 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate inkling 0.12.5
[INFO] finished tweaking crates.io crate inkling 0.12.5
[INFO] tweaked toml for crates.io crate inkling 0.12.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate inkling 0.12.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8090c8e348bf1609b285b888b24636f70797c6b1bed3f870b4a79d87c4d57052
[INFO] running `Command { std: "docker" "start" "-a" "8090c8e348bf1609b285b888b24636f70797c6b1bed3f870b4a79d87c4d57052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8090c8e348bf1609b285b888b24636f70797c6b1bed3f870b4a79d87c4d57052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8090c8e348bf1609b285b888b24636f70797c6b1bed3f870b4a79d87c4d57052", kill_on_drop: false }`
[INFO] [stdout] 8090c8e348bf1609b285b888b24636f70797c6b1bed3f870b4a79d87c4d57052
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55bad058c725bef63f8830894622763f48ae9f487180ed8a719eb9c202cb8960
[INFO] running `Command { std: "docker" "start" "-a" "55bad058c725bef63f8830894622763f48ae9f487180ed8a719eb9c202cb8960", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]     Checking inkling v0.12.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.62s
[INFO] running `Command { std: "docker" "inspect" "55bad058c725bef63f8830894622763f48ae9f487180ed8a719eb9c202cb8960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55bad058c725bef63f8830894622763f48ae9f487180ed8a719eb9c202cb8960", kill_on_drop: false }`
[INFO] [stdout] 55bad058c725bef63f8830894622763f48ae9f487180ed8a719eb9c202cb8960