[INFO] fetching crate keda-oracle-scaler 0.1.0...
[INFO] checking keda-oracle-scaler-0.1.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate keda-oracle-scaler 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate keda-oracle-scaler 0.1.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate keda-oracle-scaler 0.1.0
[INFO] finished tweaking crates.io crate keda-oracle-scaler 0.1.0
[INFO] tweaked toml for crates.io crate keda-oracle-scaler 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate keda-oracle-scaler 0.1.0 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6be638a352f3962cc13d7b70eae77859df68552a335c1a3165e76a7c3724fb12
[INFO] running `Command { std: "docker" "start" "-a" "6be638a352f3962cc13d7b70eae77859df68552a335c1a3165e76a7c3724fb12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6be638a352f3962cc13d7b70eae77859df68552a335c1a3165e76a7c3724fb12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be638a352f3962cc13d7b70eae77859df68552a335c1a3165e76a7c3724fb12", kill_on_drop: false }`
[INFO] [stdout] 6be638a352f3962cc13d7b70eae77859df68552a335c1a3165e76a7c3724fb12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a092e7a9885aa8e79bdcf6ad6c48a42dd1a9779cf760d4bcc384275996fdd8f
[INFO] running `Command { std: "docker" "start" "-a" "6a092e7a9885aa8e79bdcf6ad6c48a42dd1a9779cf760d4bcc384275996fdd8f", kill_on_drop: false }`
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[INFO] [stderr]    Compiling keda-oracle-scaler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-util v0.7.1
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[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/main.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let _ = DB_CONNECTION.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] 145 |         let _unused = DB_CONNECTION.lock();
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 145 |         drop(DB_CONNECTION.lock());
[INFO] [stdout]     |         ~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]    --> src/main.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let _ = DB_CONNECTION.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] 145 |         let _unused = DB_CONNECTION.lock();
[INFO] [stdout]     |             ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]     |
[INFO] [stdout] 145 |         drop(DB_CONNECTION.lock());
[INFO] [stdout]     |         ~~~~~                    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keda-oracle-scaler` (bin "keda-oracle-scaler" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `keda-oracle-scaler` (bin "keda-oracle-scaler") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "6a092e7a9885aa8e79bdcf6ad6c48a42dd1a9779cf760d4bcc384275996fdd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a092e7a9885aa8e79bdcf6ad6c48a42dd1a9779cf760d4bcc384275996fdd8f", kill_on_drop: false }`
[INFO] [stdout] 6a092e7a9885aa8e79bdcf6ad6c48a42dd1a9779cf760d4bcc384275996fdd8f
