[INFO] fetching crate rudac 0.8.3...
[INFO] checking rudac-0.8.3 against master#1ab98933fa75d72e882b86feac1a0be3a5b02cb0 for pr-83850
[INFO] extracting crate rudac 0.8.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rudac 0.8.3 on toolchain 1ab98933fa75d72e882b86feac1a0be3a5b02cb0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rudac 0.8.3
[INFO] finished tweaking crates.io crate rudac 0.8.3
[INFO] tweaked toml for crates.io crate rudac 0.8.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0734753ff314169751be47a5a2a63f94d91db89e20c6f010b142ce0bd03fd2c7
[INFO] running `Command { std: "docker" "start" "-a" "0734753ff314169751be47a5a2a63f94d91db89e20c6f010b142ce0bd03fd2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0734753ff314169751be47a5a2a63f94d91db89e20c6f010b142ce0bd03fd2c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0734753ff314169751be47a5a2a63f94d91db89e20c6f010b142ce0bd03fd2c7", kill_on_drop: false }`
[INFO] [stdout] 0734753ff314169751be47a5a2a63f94d91db89e20c6f010b142ce0bd03fd2c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86554f3b4df7e173a103bbf959403564edbd392c7459163082f0351f86dbab40
[INFO] running `Command { std: "docker" "start" "-a" "86554f3b4df7e173a103bbf959403564edbd392c7459163082f0351f86dbab40", kill_on_drop: false }`
[INFO] [stderr]     Checking rudac v0.8.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/queue/circular.rs:566:9
[INFO] [stdout]     |
[INFO] [stdout] 566 |         &vc[0];
[INFO] [stdout]     |         ^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 566 |         let _ = &vc[0];
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/queue/circular.rs:574:9
[INFO] [stdout]     |
[INFO] [stdout] 574 |         &vc[0];
[INFO] [stdout]     |         ^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 574 |         let _ = &vc[0];
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/queue/circular.rs:584:9
[INFO] [stdout]     |
[INFO] [stdout] 584 |         &vc[1];
[INFO] [stdout]     |         ^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 584 |         let _ = &vc[1];
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/queue/circular.rs:596:9
[INFO] [stdout]     |
[INFO] [stdout] 596 |         &vc[3];
[INFO] [stdout]     |         ^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 596 |         let _ = &vc[3];
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/queue/circular.rs:609:9
[INFO] [stdout]     |
[INFO] [stdout] 609 |         &vc[3];
[INFO] [stdout]     |         ^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 609 |         let _ = &vc[3];
[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 2.55s
[INFO] running `Command { std: "docker" "inspect" "86554f3b4df7e173a103bbf959403564edbd392c7459163082f0351f86dbab40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86554f3b4df7e173a103bbf959403564edbd392c7459163082f0351f86dbab40", kill_on_drop: false }`
[INFO] [stdout] 86554f3b4df7e173a103bbf959403564edbd392c7459163082f0351f86dbab40