[INFO] crate async-change-tracker 0.3.0 is already in cache
[INFO] checking async-change-tracker-0.3.0 against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] extracting crate async-change-tracker 0.3.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate async-change-tracker 0.3.0 on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate async-change-tracker 0.3.0
[INFO] finished tweaking crates.io crate async-change-tracker 0.3.0
[INFO] tweaked toml for crates.io crate async-change-tracker 0.3.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 89b6a72d766d438677d60a8f82f2d9f5af90ef237f00fbc8ab9229faa0f80919
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "89b6a72d766d438677d60a8f82f2d9f5af90ef237f00fbc8ab9229faa0f80919"`
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking async-change-tracker v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `futures::executor::ThreadPool`
[INFO] [stderr]    --> tests/test_change_tracker.rs:118:9
[INFO] [stderr]     |
[INFO] [stderr] 118 |     use futures::executor::ThreadPool; // use `cargo test --features "futures/thread-pool"`
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `ThreadPool` in `executor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::task::SpawnExt`
[INFO] [stderr]    --> tests/test_change_tracker.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |     use futures::task::SpawnExt;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `async-change-tracker`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "89b6a72d766d438677d60a8f82f2d9f5af90ef237f00fbc8ab9229faa0f80919"`
[INFO] running `"docker" "rm" "-f" "89b6a72d766d438677d60a8f82f2d9f5af90ef237f00fbc8ab9229faa0f80919"`
[INFO] [stdout] 89b6a72d766d438677d60a8f82f2d9f5af90ef237f00fbc8ab9229faa0f80919