[INFO] fetching crate xtree 0.1.8...
[INFO] checking xtree-0.1.8 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate xtree 0.1.8 into /workspace/builds/worker-89/source
[INFO] validating manifest of crates.io crate xtree 0.1.8 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xtree 0.1.8
[INFO] finished tweaking crates.io crate xtree 0.1.8
[INFO] tweaked toml for crates.io crate xtree 0.1.8 written to /workspace/builds/worker-89/source/Cargo.toml
[INFO] crate crates.io crate xtree 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c955cdf49781474f0191d324d745f40d89c7eb138137750f2e5cd7d38d5cc29b
[INFO] running `Command { std: "docker" "start" "-a" "c955cdf49781474f0191d324d745f40d89c7eb138137750f2e5cd7d38d5cc29b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c955cdf49781474f0191d324d745f40d89c7eb138137750f2e5cd7d38d5cc29b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c955cdf49781474f0191d324d745f40d89c7eb138137750f2e5cd7d38d5cc29b", kill_on_drop: false }`
[INFO] [stdout] c955cdf49781474f0191d324d745f40d89c7eb138137750f2e5cd7d38d5cc29b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb7de323c1f03001036c6cf0bddd772267a01046560ba18d62e367f117d3bf2b
[INFO] running `Command { std: "docker" "start" "-a" "fb7de323c1f03001036c6cf0bddd772267a01046560ba18d62e367f117d3bf2b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking xtree v0.1.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "fb7de323c1f03001036c6cf0bddd772267a01046560ba18d62e367f117d3bf2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb7de323c1f03001036c6cf0bddd772267a01046560ba18d62e367f117d3bf2b", kill_on_drop: false }`
[INFO] [stdout] fb7de323c1f03001036c6cf0bddd772267a01046560ba18d62e367f117d3bf2b