[INFO] cloning repository https://github.com/aDotInTheVoid/jsondocckng
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aDotInTheVoid/jsondocckng" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaDotInTheVoid%2Fjsondocckng", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaDotInTheVoid%2Fjsondocckng'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 317c3e5ae8d13f461296a8e44d63ebf23ba20899
[INFO] checking aDotInTheVoid/jsondocckng against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaDotInTheVoid%2Fjsondocckng" "/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/aDotInTheVoid/jsondocckng 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/aDotInTheVoid/jsondocckng
[INFO] finished tweaking git repo https://github.com/aDotInTheVoid/jsondocckng
[INFO] tweaked toml for git repo https://github.com/aDotInTheVoid/jsondocckng written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/aDotInTheVoid/jsondocckng 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fs-err v2.6.0
[INFO] [stderr]   Downloaded rustdoc-types v0.6.0
[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] d56615fb24130d65e097c0926a1cf9423544160aea1562c2268755ce3a0663b8
[INFO] running `Command { std: "docker" "start" "-a" "d56615fb24130d65e097c0926a1cf9423544160aea1562c2268755ce3a0663b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d56615fb24130d65e097c0926a1cf9423544160aea1562c2268755ce3a0663b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d56615fb24130d65e097c0926a1cf9423544160aea1562c2268755ce3a0663b8", kill_on_drop: false }`
[INFO] [stdout] d56615fb24130d65e097c0926a1cf9423544160aea1562c2268755ce3a0663b8
[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] b9c56f068309c7d345ed6fec951d30d069840adf184933ca651b1a4d025be106
[INFO] running `Command { std: "docker" "start" "-a" "b9c56f068309c7d345ed6fec951d30d069840adf184933ca651b1a4d025be106", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling camino v1.0.7
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]     Checking fs-err v2.6.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking rustdoc-types v0.6.0
[INFO] [stderr]     Checking jsondocckng v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Stage2` is never constructed
[INFO] [stdout]   --> src/lib.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Version {
[INFO] [stdout]    |      ------- variant in this enum
[INFO] [stdout] 20 |     Stage2,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Version` has derived impls for the traits `Clone` 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.83s
[INFO] running `Command { std: "docker" "inspect" "b9c56f068309c7d345ed6fec951d30d069840adf184933ca651b1a4d025be106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9c56f068309c7d345ed6fec951d30d069840adf184933ca651b1a4d025be106", kill_on_drop: false }`
[INFO] [stdout] b9c56f068309c7d345ed6fec951d30d069840adf184933ca651b1a4d025be106