[INFO] fetching crate tree-cursor 0.3.0...
[INFO] checking tree-cursor-0.3.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate tree-cursor 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tree-cursor 0.3.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree-cursor 0.3.0
[INFO] finished tweaking crates.io crate tree-cursor 0.3.0
[INFO] tweaked toml for crates.io crate tree-cursor 0.3.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6717232a2cde9d0bf2d225262143ef37eaccf7ec3bad6b196fdc046b2086021a
[INFO] running `Command { std: "docker" "start" "-a" "6717232a2cde9d0bf2d225262143ef37eaccf7ec3bad6b196fdc046b2086021a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6717232a2cde9d0bf2d225262143ef37eaccf7ec3bad6b196fdc046b2086021a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6717232a2cde9d0bf2d225262143ef37eaccf7ec3bad6b196fdc046b2086021a", kill_on_drop: false }`
[INFO] [stdout] 6717232a2cde9d0bf2d225262143ef37eaccf7ec3bad6b196fdc046b2086021a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78e809937448255888d5eab0be09103f78558aba901b36b638e9bbb44832f4cb
[INFO] running `Command { std: "docker" "start" "-a" "78e809937448255888d5eab0be09103f78558aba901b36b638e9bbb44832f4cb", kill_on_drop: false }`
[INFO] [stderr]     Checking tree-cursor v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "78e809937448255888d5eab0be09103f78558aba901b36b638e9bbb44832f4cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78e809937448255888d5eab0be09103f78558aba901b36b638e9bbb44832f4cb", kill_on_drop: false }`
[INFO] [stdout] 78e809937448255888d5eab0be09103f78558aba901b36b638e9bbb44832f4cb