[INFO] cloning repository https://github.com/promethe42/rust-delta-crdts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/promethe42/rust-delta-crdts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpromethe42%2Frust-delta-crdts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpromethe42%2Frust-delta-crdts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 305ffb2061f162c513a1896044a57d72f6225930
[INFO] checking promethe42/rust-delta-crdts against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpromethe42%2Frust-delta-crdts" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/promethe42/rust-delta-crdts on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/promethe42/rust-delta-crdts
[INFO] finished tweaking git repo https://github.com/promethe42/rust-delta-crdts
[INFO] tweaked toml for git repo https://github.com/promethe42/rust-delta-crdts written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/promethe42/rust-delta-crdts 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98e61be3910021d5fc65bd7d0c1d738f82c18eb585347dd01bdb581a6da4f00b
[INFO] running `Command { std: "docker" "start" "-a" "98e61be3910021d5fc65bd7d0c1d738f82c18eb585347dd01bdb581a6da4f00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98e61be3910021d5fc65bd7d0c1d738f82c18eb585347dd01bdb581a6da4f00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98e61be3910021d5fc65bd7d0c1d738f82c18eb585347dd01bdb581a6da4f00b", kill_on_drop: false }`
[INFO] [stdout] 98e61be3910021d5fc65bd7d0c1d738f82c18eb585347dd01bdb581a6da4f00b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59a4099e50b668181e4ddec75536eddfe0a7350702909cfb379dc07c9c718562
[INFO] running `Command { std: "docker" "start" "-a" "59a4099e50b668181e4ddec75536eddfe0a7350702909cfb379dc07c9c718562", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling dcrdt-macro v0.1.0 (/opt/rustwide/workdir/crates/dcrdt-macro)
[INFO] [stderr]     Checking rust-delta-crdts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `owner` is never read
[INFO] [stdout]   --> src/gcounter.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct GCounter<A: Actor, V: Value> {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 11 |     owner: A,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GCounter` has a derived impl for the trait `Debug`, but this is 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.26s
[INFO] running `Command { std: "docker" "inspect" "59a4099e50b668181e4ddec75536eddfe0a7350702909cfb379dc07c9c718562", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59a4099e50b668181e4ddec75536eddfe0a7350702909cfb379dc07c9c718562", kill_on_drop: false }`
[INFO] [stdout] 59a4099e50b668181e4ddec75536eddfe0a7350702909cfb379dc07c9c718562