[INFO] cloning repository https://github.com/scooter-dangle/compatible-enum-serializations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/scooter-dangle/compatible-enum-serializations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscooter-dangle%2Fcompatible-enum-serializations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscooter-dangle%2Fcompatible-enum-serializations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88f2fef92166267922c1d8177f29eb272f4eb6d6
[INFO] checking scooter-dangle/compatible-enum-serializations against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fscooter-dangle%2Fcompatible-enum-serializations" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/scooter-dangle/compatible-enum-serializations on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/scooter-dangle/compatible-enum-serializations
[INFO] finished tweaking git repo https://github.com/scooter-dangle/compatible-enum-serializations
[INFO] tweaked toml for git repo https://github.com/scooter-dangle/compatible-enum-serializations written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/scooter-dangle/compatible-enum-serializations already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.17
[INFO] [stderr]   Downloaded bincode v0.9.2
[INFO] [stderr]   Downloaded serde_derive v1.0.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eac08073caedd10ff1aa07e15f89b1a5acc9291cd00223e1dca062f84c3f522e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eac08073caedd10ff1aa07e15f89b1a5acc9291cd00223e1dca062f84c3f522e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eac08073caedd10ff1aa07e15f89b1a5acc9291cd00223e1dca062f84c3f522e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eac08073caedd10ff1aa07e15f89b1a5acc9291cd00223e1dca062f84c3f522e", kill_on_drop: false }`
[INFO] [stdout] eac08073caedd10ff1aa07e15f89b1a5acc9291cd00223e1dca062f84c3f522e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8ceb707358d548e174bcf5218f85df813ac006850eec4e172e3606a272f92273
[INFO] running `Command { std: "docker" "start" "-a" "8ceb707358d548e174bcf5218f85df813ac006850eec4e172e3606a272f92273", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking serde v1.0.17
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]    Compiling serde_derive v1.0.17
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking compatible-enums v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.18s
[INFO] running `Command { std: "docker" "inspect" "8ceb707358d548e174bcf5218f85df813ac006850eec4e172e3606a272f92273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ceb707358d548e174bcf5218f85df813ac006850eec4e172e3606a272f92273", kill_on_drop: false }`
[INFO] [stdout] 8ceb707358d548e174bcf5218f85df813ac006850eec4e172e3606a272f92273