[INFO] fetching crate executor-service 0.2.2...
[INFO] checking executor-service-0.2.2 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate executor-service 0.2.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate executor-service 0.2.2 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate executor-service 0.2.2
[INFO] finished tweaking crates.io crate executor-service 0.2.2
[INFO] tweaked toml for crates.io crate executor-service 0.2.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.11.3
[INFO] [stderr]   Downloaded anstyle v1.0.7
[INFO] [stderr]   Downloaded anstyle-query v1.0.3
[INFO] [stderr]   Downloaded colorchoice v1.0.1
[INFO] [stderr]   Downloaded env_filter v0.1.0
[INFO] [stderr]   Downloaded is_terminal_polyfill v1.70.0
[INFO] [stderr]   Downloaded ctor v0.2.8
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.3
[INFO] [stderr]   Downloaded anstyle-parse v0.2.4
[INFO] [stderr]   Downloaded anstream v0.6.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd5a6ca0a64281c5059e18e42574305dfc73778603e80e5cdf45c576f5a0ea29
[INFO] running `Command { std: "docker" "start" "-a" "dd5a6ca0a64281c5059e18e42574305dfc73778603e80e5cdf45c576f5a0ea29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd5a6ca0a64281c5059e18e42574305dfc73778603e80e5cdf45c576f5a0ea29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd5a6ca0a64281c5059e18e42574305dfc73778603e80e5cdf45c576f5a0ea29", kill_on_drop: false }`
[INFO] [stdout] dd5a6ca0a64281c5059e18e42574305dfc73778603e80e5cdf45c576f5a0ea29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ea0cb4b1745ecebe0c89c31728612cc583c7966ba502380b4bbd5986a9b93e9
[INFO] running `Command { std: "docker" "start" "-a" "7ea0cb4b1745ecebe0c89c31728612cc583c7966ba502380b4bbd5986a9b93e9", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking anstyle-query v1.0.3
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking executor-service v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:410:25
[INFO] [stdout]     |
[INFO] [stdout] 410 |                         Self::create_thread(current_thread_count, r, available.clone(), pool_waiter.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 410 |                         let _ = Self::create_thread(current_thread_count, r, available.clone(), pool_waiter.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:416:29
[INFO] [stdout]     |
[INFO] [stdout] 416 |                         let _ = pool_waiter.wait(lock);
[INFO] [stdout]     |                             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 416 |                         let _unused = pool_waiter.wait(lock);
[INFO] [stdout]     |                             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 416 |                         drop(pool_waiter.wait(lock));
[INFO] [stdout]     |                         ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:421:27
[INFO] [stdout]     |
[INFO] [stdout] 421 |                       let _ = pool_waiter.wait(lock);
[INFO] [stdout]     |                           ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 421 |                       let _unused = pool_waiter.wait(lock);
[INFO] [stdout]     |                           ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 421 |                       drop(pool_waiter.wait(lock));
[INFO] [stdout]     |                       ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `executor-service` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7ea0cb4b1745ecebe0c89c31728612cc583c7966ba502380b4bbd5986a9b93e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ea0cb4b1745ecebe0c89c31728612cc583c7966ba502380b4bbd5986a9b93e9", kill_on_drop: false }`
[INFO] [stdout] 7ea0cb4b1745ecebe0c89c31728612cc583c7966ba502380b4bbd5986a9b93e9
[INFO] checking executor-service-0.2.2 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate executor-service 0.2.2 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate executor-service 0.2.2 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate executor-service 0.2.2
[INFO] finished tweaking crates.io crate executor-service 0.2.2
[INFO] tweaked toml for crates.io crate executor-service 0.2.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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_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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b4d76240e40c42b073f02ba706ba22e03e582d94ced675bcb1d7b0a6a7cb934
[INFO] running `Command { std: "docker" "start" "-a" "7b4d76240e40c42b073f02ba706ba22e03e582d94ced675bcb1d7b0a6a7cb934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b4d76240e40c42b073f02ba706ba22e03e582d94ced675bcb1d7b0a6a7cb934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4d76240e40c42b073f02ba706ba22e03e582d94ced675bcb1d7b0a6a7cb934", kill_on_drop: false }`
[INFO] [stdout] 7b4d76240e40c42b073f02ba706ba22e03e582d94ced675bcb1d7b0a6a7cb934
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dc95cce2367f500c15423c4161001b05af8bbf6576a5ac4e067e92b3365a00b
[INFO] running `Command { std: "docker" "start" "-a" "3dc95cce2367f500c15423c4161001b05af8bbf6576a5ac4e067e92b3365a00b", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]     Checking anstyle-query v1.0.3
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking anstyle v1.0.7
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stderr]     Checking executor-service v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:410:25
[INFO] [stdout]     |
[INFO] [stdout] 410 |                         Self::create_thread(current_thread_count, r, available.clone(), pool_waiter.clone());
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 410 |                         let _ = Self::create_thread(current_thread_count, r, available.clone(), pool_waiter.clone());
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:416:29
[INFO] [stdout]     |
[INFO] [stdout] 416 |                         let _ = pool_waiter.wait(lock);
[INFO] [stdout]     |                             ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 416 |                         let _unused = pool_waiter.wait(lock);
[INFO] [stdout]     |                             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 416 |                         drop(pool_waiter.wait(lock));
[INFO] [stdout]     |                         ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/lib.rs:421:27
[INFO] [stdout]     |
[INFO] [stdout] 421 |                       let _ = pool_waiter.wait(lock);
[INFO] [stdout]     |                           ^ this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]     |
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 421 |                       let _unused = pool_waiter.wait(lock);
[INFO] [stdout]     |                           ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 421 |                       drop(pool_waiter.wait(lock));
[INFO] [stdout]     |                       ~~~~~                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `executor-service` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3dc95cce2367f500c15423c4161001b05af8bbf6576a5ac4e067e92b3365a00b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc95cce2367f500c15423c4161001b05af8bbf6576a5ac4e067e92b3365a00b", kill_on_drop: false }`
[INFO] [stdout] 3dc95cce2367f500c15423c4161001b05af8bbf6576a5ac4e067e92b3365a00b
