[INFO] fetching crate async-change-tracker 0.3.1...
[INFO] checking async-change-tracker-0.3.1 against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] extracting crate async-change-tracker 0.3.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate async-change-tracker 0.3.1 on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-change-tracker 0.3.1
[INFO] finished tweaking crates.io crate async-change-tracker 0.3.1
[INFO] tweaked toml for crates.io crate async-change-tracker 0.3.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db5a763469d09e1f0c962b6a290bfc0bba9efc616a6617399e4d2a1e6d3336f7
[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" "db5a763469d09e1f0c962b6a290bfc0bba9efc616a6617399e4d2a1e6d3336f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db5a763469d09e1f0c962b6a290bfc0bba9efc616a6617399e4d2a1e6d3336f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db5a763469d09e1f0c962b6a290bfc0bba9efc616a6617399e4d2a1e6d3336f7", kill_on_drop: false }`
[INFO] [stdout] db5a763469d09e1f0c962b6a290bfc0bba9efc616a6617399e4d2a1e6d3336f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f647d023e5310150bf9e12e7b8cd64ef7cd491f3328b0d62ebfafa2607a69828
[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" "f647d023e5310150bf9e12e7b8cd64ef7cd491f3328b0d62ebfafa2607a69828", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]     Checking futures-sink v0.3.9
[INFO] [stderr]     Checking futures-io v0.3.9
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking futures-channel v0.3.9
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling futures-macro v0.3.9
[INFO] [stderr]     Checking futures-util v0.3.9
[INFO] [stderr]     Checking futures-executor v0.3.9
[INFO] [stderr]     Checking futures v0.3.9
[INFO] [stderr]     Checking async-change-tracker v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `futures::executor::ThreadPool`
[INFO] [stdout]    --> tests/test_change_tracker.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |     use futures::executor::ThreadPool; // use `cargo test --features "futures/thread-pool"`
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `ThreadPool` in `executor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::task::SpawnExt`
[INFO] [stdout]    --> tests/test_change_tracker.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     use futures::task::SpawnExt;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-change-tracker`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f647d023e5310150bf9e12e7b8cd64ef7cd491f3328b0d62ebfafa2607a69828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f647d023e5310150bf9e12e7b8cd64ef7cd491f3328b0d62ebfafa2607a69828", kill_on_drop: false }`
[INFO] [stdout] f647d023e5310150bf9e12e7b8cd64ef7cd491f3328b0d62ebfafa2607a69828