[INFO] fetching crate async-change-tracker 0.3.1...
[INFO] testing async-change-tracker-0.3.1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate async-change-tracker 0.3.1 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate async-change-tracker 0.3.1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-88/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21df1d03e3f4d4bc8a317a897c5e2fb615ccb250cc13e5927e02c29547e53d75
[INFO] running `Command { std: "docker" "start" "-a" "21df1d03e3f4d4bc8a317a897c5e2fb615ccb250cc13e5927e02c29547e53d75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21df1d03e3f4d4bc8a317a897c5e2fb615ccb250cc13e5927e02c29547e53d75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21df1d03e3f4d4bc8a317a897c5e2fb615ccb250cc13e5927e02c29547e53d75", kill_on_drop: false }`
[INFO] [stdout] 21df1d03e3f4d4bc8a317a897c5e2fb615ccb250cc13e5927e02c29547e53d75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5963bc337b97bc6de20eae08a29f2ef04dc034f1c3b9b35dd2bfada8c49f09a
[INFO] running `Command { std: "docker" "start" "-a" "b5963bc337b97bc6de20eae08a29f2ef04dc034f1c3b9b35dd2bfada8c49f09a", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling async-change-tracker v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.00s
[INFO] running `Command { std: "docker" "inspect" "b5963bc337b97bc6de20eae08a29f2ef04dc034f1c3b9b35dd2bfada8c49f09a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5963bc337b97bc6de20eae08a29f2ef04dc034f1c3b9b35dd2bfada8c49f09a", kill_on_drop: false }`
[INFO] [stdout] b5963bc337b97bc6de20eae08a29f2ef04dc034f1c3b9b35dd2bfada8c49f09a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0c9c9ac228f1b5b0a840850c592234cf7b8464c678cf5b6bf0a902ae2a13e8d
[INFO] running `Command { std: "docker" "start" "-a" "a0c9c9ac228f1b5b0a840850c592234cf7b8464c678cf5b6bf0a902ae2a13e8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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 the root
[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] [stderr] error: could not compile `async-change-tracker` due to 2 previous errors; 1 warning emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a0c9c9ac228f1b5b0a840850c592234cf7b8464c678cf5b6bf0a902ae2a13e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0c9c9ac228f1b5b0a840850c592234cf7b8464c678cf5b6bf0a902ae2a13e8d", kill_on_drop: false }`
[INFO] [stdout] a0c9c9ac228f1b5b0a840850c592234cf7b8464c678cf5b6bf0a902ae2a13e8d