[INFO] fetching crate varcon-core 1.2.0...
[INFO] checking varcon-core-1.2.0 against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] extracting crate varcon-core 1.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate varcon-core 1.2.0 on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varcon-core 1.2.0
[INFO] finished tweaking crates.io crate varcon-core 1.2.0
[INFO] tweaked toml for crates.io crate varcon-core 1.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enumflags2_derive v0.6.4
[INFO] [stderr]   Downloaded enumflags2 v0.6.4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af06abd8a8ab98b7602fe513ed667a7a2cb104d90d2f147dff832c9f8c105c2a
[INFO] running `Command { std: "docker" "start" "-a" "af06abd8a8ab98b7602fe513ed667a7a2cb104d90d2f147dff832c9f8c105c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af06abd8a8ab98b7602fe513ed667a7a2cb104d90d2f147dff832c9f8c105c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af06abd8a8ab98b7602fe513ed667a7a2cb104d90d2f147dff832c9f8c105c2a", kill_on_drop: false }`
[INFO] [stdout] af06abd8a8ab98b7602fe513ed667a7a2cb104d90d2f147dff832c9f8c105c2a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45205ee4cf29436cdd375423fec58225c7eab2bf30d60b93fb24c25c75077757
[INFO] running `Command { std: "docker" "start" "-a" "45205ee4cf29436cdd375423fec58225c7eab2bf30d60b93fb24c25c75077757", kill_on_drop: false }`
[INFO] [stderr]     Checking varcon-core v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "45205ee4cf29436cdd375423fec58225c7eab2bf30d60b93fb24c25c75077757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45205ee4cf29436cdd375423fec58225c7eab2bf30d60b93fb24c25c75077757", kill_on_drop: false }`
[INFO] [stdout] 45205ee4cf29436cdd375423fec58225c7eab2bf30d60b93fb24c25c75077757