[INFO] fetching crate consistent-rs 0.1.1...
[INFO] testing consistent-rs-0.1.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate consistent-rs 0.1.1 into /workspace/builds/worker-0-tc1/source
[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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate consistent-rs 0.1.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] [stderr]       Adding crc v1.8.1 (available: v3.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crc v1.8.1
[INFO] [stderr]   Downloaded build_const v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24517bbd5da3aedb8eaaa41eca111a5d1165a79971c4ca1db927a3c0e68bbdc2
[INFO] running `Command { std: "docker" "start" "-a" "24517bbd5da3aedb8eaaa41eca111a5d1165a79971c4ca1db927a3c0e68bbdc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24517bbd5da3aedb8eaaa41eca111a5d1165a79971c4ca1db927a3c0e68bbdc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24517bbd5da3aedb8eaaa41eca111a5d1165a79971c4ca1db927a3c0e68bbdc2", kill_on_drop: false }`
[INFO] [stdout] 24517bbd5da3aedb8eaaa41eca111a5d1165a79971c4ca1db927a3c0e68bbdc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4aae086555096a06d4af12835573c127bfabb5d107ab99e2b240d31ef7f96da3
[INFO] running `Command { std: "docker" "start" "-a" "4aae086555096a06d4af12835573c127bfabb5d107ab99e2b240d31ef7f96da3", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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] error: 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 lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` (part of `#[deny(let_underscore)]`) 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 -         let _ = self.lock.read().expect("rLock");
[INFO] [stdout] 45 +         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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 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 -         let _ = self.lock.write().expect("wLock");
[INFO] [stdout] 51 +         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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 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 -         let _ = self.lock.read().expect("rLock");
[INFO] [stdout] 69 +         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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 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 -         let _ = self.lock.read().expect("rLock");
[INFO] [stdout] 80 +         drop(self.lock.read().expect("rLock"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: 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 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 -         let _ = self.lock.write().expect("wLock");
[INFO] [stdout] 111 +         drop(self.lock.write().expect("wLock"));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `consistent-rs` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "4aae086555096a06d4af12835573c127bfabb5d107ab99e2b240d31ef7f96da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aae086555096a06d4af12835573c127bfabb5d107ab99e2b240d31ef7f96da3", kill_on_drop: false }`
[INFO] [stdout] 4aae086555096a06d4af12835573c127bfabb5d107ab99e2b240d31ef7f96da3