[INFO] crate minimp3 0.3.2 is already in cache
[INFO] extracting crate minimp3 0.3.2 into work/ex/clippy-test-run/sources/stable/reg/minimp3/0.3.2
[INFO] extracting crate minimp3 0.3.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/minimp3/0.3.2
[INFO] validating manifest of minimp3-0.3.2 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of minimp3-0.3.2 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing minimp3-0.3.2
[INFO] finished frobbing minimp3-0.3.2
[INFO] frobbed toml for minimp3-0.3.2 written to work/ex/clippy-test-run/sources/stable/reg/minimp3/0.3.2/Cargo.toml
[INFO] started frobbing minimp3-0.3.2
[INFO] finished frobbing minimp3-0.3.2
[INFO] frobbed toml for minimp3-0.3.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/minimp3/0.3.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting minimp3-0.3.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/minimp3/0.3.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0546837b9b2e091551df2d4991fc47bec8da3fe56783a2f39405eb3af575b217
[INFO] running `"docker" "start" "-a" "0546837b9b2e091551df2d4991fc47bec8da3fe56783a2f39405eb3af575b217"`
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]     Checking slice-deque v0.1.16
[INFO] [stderr]     Checking minimp3 v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 | /             let mut bytes_read = None;
[INFO] [stderr] 77 | |             if self.buffer.len() < REFILL_TRIGGER {
[INFO] [stderr] 78 | |                 bytes_read = Some(self.refill()?);
[INFO] [stderr] 79 | |             }
[INFO] [stderr]    | |_____________^ help: it is more idiomatic to write: `let <mut> bytes_read = if self.buffer.len() < REFILL_TRIGGER { Some(self.refill()?) } else { None };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 | /             let mut bytes_read = None;
[INFO] [stderr] 77 | |             if self.buffer.len() < REFILL_TRIGGER {
[INFO] [stderr] 78 | |                 bytes_read = Some(self.refill()?);
[INFO] [stderr] 79 | |             }
[INFO] [stderr]    | |_____________^ help: it is more idiomatic to write: `let <mut> bytes_read = if self.buffer.len() < REFILL_TRIGGER { Some(self.refill()?) } else { None };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sample_rate`
[INFO] [stderr]   --> examples/example.rs:14:30
[INFO] [stderr]    |
[INFO] [stderr] 14 |             Ok(Frame { data, sample_rate, channels, .. }) => {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: try ignoring the field: `sample_rate: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.26s
[INFO] running `"docker" "inspect" "0546837b9b2e091551df2d4991fc47bec8da3fe56783a2f39405eb3af575b217"`
[INFO] running `"docker" "rm" "-f" "0546837b9b2e091551df2d4991fc47bec8da3fe56783a2f39405eb3af575b217"`
[INFO] [stdout] 0546837b9b2e091551df2d4991fc47bec8da3fe56783a2f39405eb3af575b217