[INFO] fetching crate async-inspect 0.2.0...
[INFO] checking async-inspect-0.2.0 against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] extracting crate async-inspect 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate async-inspect 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate async-inspect 0.2.0
[INFO] tweaked toml for crates.io crate async-inspect 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-inspect 0.2.0 on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate async-inspect 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "307c25d496e51f110fd02e2a54a8bbba1f17ec53723dafbb89ef9c3bdb12bd2c", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "307c25d496e51f110fd02e2a54a8bbba1f17ec53723dafbb89ef9c3bdb12bd2c", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98e354918de3d9cc9950ec16406ce8269eca5622c32a739634922bb0a2ccc1c9
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[INFO] [stdout] warning: unused return value of `inspector::Inspector::register_task` that must be used
[INFO] [stdout]    --> src/inspector/mod.rs:590:9
[INFO] [stdout]     |
[INFO] [stdout] 590 |         inspector.register_task("task1".to_string());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 590 |         let _ = inspector.register_task("task1".to_string());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `inspector::Inspector::register_task` that must be used
[INFO] [stdout]    --> src/inspector/mod.rs:591:9
[INFO] [stdout]     |
[INFO] [stdout] 591 |         inspector.register_task("task2".to_string());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 591 |         let _ = inspector.register_task("task2".to_string());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `deadlock::DeadlockDetector::register_resource` that must be used
[INFO] [stdout]    --> src/deadlock/mod.rs:460:9
[INFO] [stdout]     |
[INFO] [stdout] 460 |         detector.register_resource(resource);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 460 |         let _ = detector.register_resource(resource);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `deadlock::DeadlockDetector::register_resource` that must be used
[INFO] [stdout]    --> src/deadlock/mod.rs:476:9
[INFO] [stdout]     |
[INFO] [stdout] 476 |         detector.register_resource(res1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 476 |         let _ = detector.register_resource(res1);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `deadlock::DeadlockDetector::register_resource` that must be used
[INFO] [stdout]    --> src/deadlock/mod.rs:477:9
[INFO] [stdout]     |
[INFO] [stdout] 477 |         detector.register_resource(res2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 477 |         let _ = detector.register_resource(res2);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `deadlock::DeadlockDetector::register_resource` that must be used
[INFO] [stdout]    --> src/deadlock/mod.rs:507:9
[INFO] [stdout]     |
[INFO] [stdout] 507 |         detector.register_resource(res);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 507 |         let _ = detector.register_resource(res);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `inspector::Inspector::register_task` that must be used
[INFO] [stdout]     --> src/reporter/html.rs:1238:9
[INFO] [stdout]      |
[INFO] [stdout] 1238 |         inspector.register_task("test_task".to_string());
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]      |
[INFO] [stdout] 1238 |         let _ = inspector.register_task("test_task".to_string());
[INFO] [stdout]      |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `inspector::Inspector::register_task` that must be used
[INFO] [stdout]    --> src/reporter/mod.rs:441:9
[INFO] [stdout]     |
[INFO] [stdout] 441 |         inspector.register_task("test".to_string());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 441 |         let _ = inspector.register_task("test".to_string());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> benches/overhead.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |             let handle = spawn_tracked("test_task", async {
[INFO] [stdout]    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.62s
[INFO] running `Command { std: "docker" "inspect" "98e354918de3d9cc9950ec16406ce8269eca5622c32a739634922bb0a2ccc1c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98e354918de3d9cc9950ec16406ce8269eca5622c32a739634922bb0a2ccc1c9", kill_on_drop: false }`
[INFO] [stdout] 98e354918de3d9cc9950ec16406ce8269eca5622c32a739634922bb0a2ccc1c9
