[INFO] fetching crate consistent-rs 0.1.1...
[INFO] testing consistent-rs-0.1.1 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate consistent-rs 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate consistent-rs 0.1.1 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate consistent-rs 0.1.1
[INFO] finished tweaking crates.io crate consistent-rs 0.1.1
[INFO] tweaked toml for crates.io crate consistent-rs 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d4707b803f2bea67c5c3cdf7029a7454a7071ab03f5da4c318abc1a1cca463d
[INFO] running `Command { std: "docker" "start" "-a" "9d4707b803f2bea67c5c3cdf7029a7454a7071ab03f5da4c318abc1a1cca463d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d4707b803f2bea67c5c3cdf7029a7454a7071ab03f5da4c318abc1a1cca463d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d4707b803f2bea67c5c3cdf7029a7454a7071ab03f5da4c318abc1a1cca463d", kill_on_drop: false }`
[INFO] [stdout] 9d4707b803f2bea67c5c3cdf7029a7454a7071ab03f5da4c318abc1a1cca463d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a478fcf819a7a252aaad05c8b2cc552b9dcf185a47fdcfb12616d9ea1b8d19f
[INFO] running `Command { std: "docker" "start" "-a" "5a478fcf819a7a252aaad05c8b2cc552b9dcf185a47fdcfb12616d9ea1b8d19f", kill_on_drop: false }`
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling consistent-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[INFO] [stdout]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(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] 45 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = self.lock.write().expect("wLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 51 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]    |         ~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 69 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 69 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 80 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 80 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/consistant.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let _ = self.lock.write().expect("wLock");
[INFO] [stdout]     |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]     |             |
[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] 111 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 111 |         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]     |         ~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "5a478fcf819a7a252aaad05c8b2cc552b9dcf185a47fdcfb12616d9ea1b8d19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a478fcf819a7a252aaad05c8b2cc552b9dcf185a47fdcfb12616d9ea1b8d19f", kill_on_drop: false }`
[INFO] [stdout] 5a478fcf819a7a252aaad05c8b2cc552b9dcf185a47fdcfb12616d9ea1b8d19f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7c5a73572eb6f417e8c97e6d1e9efc90ba2f471a7f0cbc7d705b7678a6f393b
[INFO] running `Command { std: "docker" "start" "-a" "a7c5a73572eb6f417e8c97e6d1e9efc90ba2f471a7f0cbc7d705b7678a6f393b", kill_on_drop: false }`
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[INFO] [stdout]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(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] 45 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = self.lock.write().expect("wLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 51 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]    |         ~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 69 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 69 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 80 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 80 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling consistent-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/consistant.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let _ = self.lock.write().expect("wLock");
[INFO] [stdout]     |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]     |             |
[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] 111 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 111 |         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]     |         ~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[INFO] [stdout]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(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] 45 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let _ = self.lock.write().expect("wLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 51 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 51 |         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]    |         ~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 69 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 69 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/consistant.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let _ = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |             |
[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] 80 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stdout]    |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 80 |         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |         ~~~~~                                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/consistant.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let _ = self.lock.write().expect("wLock");
[INFO] [stdout]     |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]     |             |
[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] 111 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 111 |         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]     |         ~~~~~                                 +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "a7c5a73572eb6f417e8c97e6d1e9efc90ba2f471a7f0cbc7d705b7678a6f393b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c5a73572eb6f417e8c97e6d1e9efc90ba2f471a7f0cbc7d705b7678a6f393b", kill_on_drop: false }`
[INFO] [stdout] a7c5a73572eb6f417e8c97e6d1e9efc90ba2f471a7f0cbc7d705b7678a6f393b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e40110d60e5a2f8c1e5d630904842eae749cef6b57583ed056e8b1b441314107
[INFO] running `Command { std: "docker" "start" "-a" "e40110d60e5a2f8c1e5d630904842eae749cef6b57583ed056e8b1b441314107", kill_on_drop: false }`
[INFO] [stderr] warning: non-binding let on a synchronization lock
[INFO] [stderr]   --> src/consistant.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let _ = self.lock.read().expect("rLock");
[INFO] [stderr]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stderr]    |             |
[INFO] [stderr]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(let_underscore_lock)]` on by default
[INFO] [stderr] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stderr]    |             ~~~~~~~
[INFO] [stderr] help: consider immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 45 |         drop(self.lock.read().expect("rLock"));
[INFO] [stderr]    |         ~~~~~                                +
[INFO] [stderr] 
[INFO] [stderr] warning: non-binding let on a synchronization lock
[INFO] [stderr]   --> src/consistant.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let _ = self.lock.write().expect("wLock");
[INFO] [stderr]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stderr]    |             |
[INFO] [stderr]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stderr]    |
[INFO] [stderr] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stderr]    |             ~~~~~~~
[INFO] [stderr] help: consider immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 51 |         drop(self.lock.write().expect("wLock"));
[INFO] [stderr]    |         ~~~~~                                 +
[INFO] [stderr] 
[INFO] [stderr] warning: non-binding let on a synchronization lock
[INFO] [stderr]   --> src/consistant.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let _ = self.lock.read().expect("rLock");
[INFO] [stderr]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stderr]    |             |
[INFO] [stderr]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stderr]    |
[INFO] [stderr] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stderr]    |             ~~~~~~~
[INFO] [stderr] help: consider immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 69 |         drop(self.lock.read().expect("rLock"));
[INFO] [stderr]    |         ~~~~~                                +
[INFO] [stderr] 
[INFO] [stderr] warning: non-binding let on a synchronization lock
[INFO] [stderr]   --> src/consistant.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let _ = self.lock.read().expect("rLock");
[INFO] [stderr]    |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stderr]    |             |
[INFO] [stderr]    |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stderr]    |
[INFO] [stderr] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let _unused = self.lock.read().expect("rLock");
[INFO] [stderr]    |             ~~~~~~~
[INFO] [stderr] help: consider immediately dropping the value
[INFO] [stderr]    |
[INFO] [stderr] 80 |         drop(self.lock.read().expect("rLock"));
[INFO] [stderr]    |         ~~~~~                                +
[INFO] [stderr] 
[INFO] [stderr] warning: non-binding let on a synchronization lock
[INFO] [stderr]    --> src/consistant.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let _ = self.lock.write().expect("wLock");
[INFO] [stderr]     |             ^   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stderr]     |             |
[INFO] [stderr]     |             this lock is not assigned to a binding and is immediately dropped
[INFO] [stderr]     |
[INFO] [stderr] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stderr]     |
[INFO] [stderr] 111 |         let _unused = self.lock.write().expect("wLock");
[INFO] [stderr]     |             ~~~~~~~
[INFO] [stderr] help: consider immediately dropping the value
[INFO] [stderr]     |
[INFO] [stderr] 111 |         drop(self.lock.write().expect("wLock"));
[INFO] [stderr]     |         ~~~~~                                 +
[INFO] [stderr] 
[INFO] [stderr] warning: `consistent-rs` (lib) generated 5 warnings (run `cargo fix --lib -p consistent-rs` to apply 5 suggestions)
[INFO] [stderr] warning: `consistent-rs` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/consistent_rs-d66b3a0c3c2fa939)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test consistant::tests::test_default ... ok
[INFO] [stdout] test consistant::tests::test_contains ... ok
[INFO] [stdout] test consistant::tests::test_add ... ok
[INFO] [stdout] test consistant::tests::test_get ... ok
[INFO] [stdout] test consistant::tests::test_count ... ok
[INFO] [stdout] test consistant::tests::test_get_n ... ok
[INFO] [stdout] test consistant::tests::test_remove ... ok
[INFO] [stdout] test consistant::tests::test_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests consistent-rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e40110d60e5a2f8c1e5d630904842eae749cef6b57583ed056e8b1b441314107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e40110d60e5a2f8c1e5d630904842eae749cef6b57583ed056e8b1b441314107", kill_on_drop: false }`
[INFO] [stdout] e40110d60e5a2f8c1e5d630904842eae749cef6b57583ed056e8b1b441314107
