[INFO] fetching crate audio-visualizer 0.3.1...
[INFO] checking audio-visualizer-0.3.1 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] extracting crate audio-visualizer 0.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate audio-visualizer 0.3.1 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate audio-visualizer 0.3.1
[INFO] finished tweaking crates.io crate audio-visualizer 0.3.1
[INFO] tweaked toml for crates.io crate audio-visualizer 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate audio-visualizer 0.3.1 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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fff381e2dfd07297dd1289c22e1431fa9621462ec44bf6cf23a4fea41ea333a7
[INFO] running `Command { std: "docker" "start" "-a" "fff381e2dfd07297dd1289c22e1431fa9621462ec44bf6cf23a4fea41ea333a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fff381e2dfd07297dd1289c22e1431fa9621462ec44bf6cf23a4fea41ea333a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff381e2dfd07297dd1289c22e1431fa9621462ec44bf6cf23a4fea41ea333a7", kill_on_drop: false }`
[INFO] [stdout] fff381e2dfd07297dd1289c22e1431fa9621462ec44bf6cf23a4fea41ea333a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb4a8e1952c024a7cde2c754c6cba75a5f735a1b58d4aa274be742a37cab5ec6
[INFO] running `Command { std: "docker" "start" "-a" "cb4a8e1952c024a7cde2c754c6cba75a5f735a1b58d4aa274be742a37cab5ec6", kill_on_drop: false }`
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[INFO] [stderr]     Checking audio-visualizer v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&Result<(), DrawingAreaErrorKind<plotters_bitmap::bitmap::BitMapBackendError>>` instead of borrowing the inner type
[INFO] [stdout]    --> src/dynamic/window_top_btm/mod.rs:150:47
[INFO] [stdout]     |
[INFO] [stdout] 150 |         top_chart.plotting_area().fill(&BLACK).borrow();
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&Result<(), DrawingAreaErrorKind<plotters_bitmap::bitmap::BitMapBackendError>>` instead of borrowing the inner type
[INFO] [stdout]    --> src/dynamic/window_top_btm/mod.rs:151:47
[INFO] [stdout]     |
[INFO] [stdout] 151 |         btm_chart.plotting_area().fill(&BLACK).borrow();
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&Result<(), DrawingAreaErrorKind<plotters_bitmap::bitmap::BitMapBackendError>>` instead of borrowing the inner type
[INFO] [stdout]    --> src/dynamic/window_top_btm/mod.rs:150:47
[INFO] [stdout]     |
[INFO] [stdout] 150 |         top_chart.plotting_area().fill(&BLACK).borrow();
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&Result<(), DrawingAreaErrorKind<plotters_bitmap::bitmap::BitMapBackendError>>` instead of borrowing the inner type
[INFO] [stdout]    --> src/dynamic/window_top_btm/mod.rs:151:47
[INFO] [stdout]     |
[INFO] [stdout] 151 |         btm_chart.plotting_area().fill(&BLACK).borrow();
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 10.82s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "cb4a8e1952c024a7cde2c754c6cba75a5f735a1b58d4aa274be742a37cab5ec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb4a8e1952c024a7cde2c754c6cba75a5f735a1b58d4aa274be742a37cab5ec6", kill_on_drop: false }`
[INFO] [stdout] cb4a8e1952c024a7cde2c754c6cba75a5f735a1b58d4aa274be742a37cab5ec6
