[INFO] fetching crate task_scope 0.1.1...
[INFO] checking task_scope-0.1.1 against master#2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4 for pr-84385
[INFO] extracting crate task_scope 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate task_scope 0.1.1 on toolchain 2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate task_scope 0.1.1
[INFO] finished tweaking crates.io crate task_scope 0.1.1
[INFO] tweaked toml for crates.io crate task_scope 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate task_scope 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v0.2.3
[INFO] [stderr]   Downloaded tokio v0.2.8
[INFO] [stderr]   Downloaded pin-project-internal v0.4.6
[INFO] [stderr]   Downloaded futures-timer v2.0.2
[INFO] [stderr]   Downloaded async-task v1.2.0
[INFO] [stderr]   Downloaded futures-intrusive v0.2.2
[INFO] [stderr]   Downloaded kv-log-macro v1.0.4
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[INFO] [stderr]   Downloaded once_cell v1.2.0
[INFO] [stderr]   Downloaded pin-project v0.4.6
[INFO] [stderr]   Downloaded pin-project-lite v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee58b1bb510ce880a98fe39eac91301aeecfd32a6de08e758117a1ee356255a4
[INFO] running `Command { std: "docker" "start" "-a" "ee58b1bb510ce880a98fe39eac91301aeecfd32a6de08e758117a1ee356255a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee58b1bb510ce880a98fe39eac91301aeecfd32a6de08e758117a1ee356255a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee58b1bb510ce880a98fe39eac91301aeecfd32a6de08e758117a1ee356255a4", kill_on_drop: false }`
[INFO] [stdout] ee58b1bb510ce880a98fe39eac91301aeecfd32a6de08e758117a1ee356255a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+2d3a85b4f8ba7e2554f4d4fee126bc2ac6ee2af4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 556320fdfbf396a69bc7af162242ec84144ea95ae67c1b311436e801151e0283
[INFO] running `Command { std: "docker" "start" "-a" "556320fdfbf396a69bc7af162242ec84144ea95ae67c1b311436e801151e0283", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking pin-project-lite v0.1.2
[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.11.1
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[INFO] [stderr]     Checking futures-intrusive v0.2.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]     Checking tokio v0.2.8
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking task_scope v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/cancelable.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/cancellation.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/handle.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/scope.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/cancelable.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/cancellation.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/handle.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/scope.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/waker.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Box::from_raw(data.cast::<WakerData>() as *mut WakerData);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/with_token.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/waker.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Box::from_raw(data.cast::<WakerData>() as *mut WakerData);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/with_token.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[pin_project]
[INFO] [stdout]    | ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the derive macro `::pin_project::__private::__PinProjectInternalDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.69s
[INFO] running `Command { std: "docker" "inspect" "556320fdfbf396a69bc7af162242ec84144ea95ae67c1b311436e801151e0283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "556320fdfbf396a69bc7af162242ec84144ea95ae67c1b311436e801151e0283", kill_on_drop: false }`
[INFO] [stdout] 556320fdfbf396a69bc7af162242ec84144ea95ae67c1b311436e801151e0283