[INFO] fetching crate libreda-db 0.0.6...
[INFO] checking libreda-db-0.0.6 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate libreda-db 0.0.6 into /workspace/builds/worker-62/source
[INFO] validating manifest of crates.io crate libreda-db 0.0.6 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libreda-db 0.0.6
[INFO] finished tweaking crates.io crate libreda-db 0.0.6
[INFO] tweaked toml for crates.io crate libreda-db 0.0.6 written to /workspace/builds/worker-62/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69cc457fa96d59c84eb88d3f2388d6b864d47316602ecd3a05733e494ef848d7
[INFO] running `Command { std: "docker" "start" "-a" "69cc457fa96d59c84eb88d3f2388d6b864d47316602ecd3a05733e494ef848d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69cc457fa96d59c84eb88d3f2388d6b864d47316602ecd3a05733e494ef848d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69cc457fa96d59c84eb88d3f2388d6b864d47316602ecd3a05733e494ef848d7", kill_on_drop: false }`
[INFO] [stdout] 69cc457fa96d59c84eb88d3f2388d6b864d47316602ecd3a05733e494ef848d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-62/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6bd2fbf7f53b63b32dd4b113815eaf52f36023d2debe4403d4b50f481bbb38b
[INFO] running `Command { std: "docker" "start" "-a" "e6bd2fbf7f53b63b32dd4b113815eaf52f36023d2debe4403d4b50f481bbb38b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking iron-shapes v0.0.6
[INFO] [stderr]     Checking libreda-db v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `top_a`
[INFO] [stdout]    --> src/undo.rs:678:9
[INFO] [stdout]     |
[INFO] [stdout] 678 |     let top_a = undo.create_pin(&top, "A".into(), Direction::Input);
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_top_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sub_b`
[INFO] [stdout]    --> src/undo.rs:680:9
[INFO] [stdout]     |
[INFO] [stdout] 680 |     let sub_b = undo.create_pin(&sub, "B".into(), Direction::Input);
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_sub_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.27s
[INFO] running `Command { std: "docker" "inspect" "e6bd2fbf7f53b63b32dd4b113815eaf52f36023d2debe4403d4b50f481bbb38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bd2fbf7f53b63b32dd4b113815eaf52f36023d2debe4403d4b50f481bbb38b", kill_on_drop: false }`
[INFO] [stdout] e6bd2fbf7f53b63b32dd4b113815eaf52f36023d2debe4403d4b50f481bbb38b
