Dec 12 16:38:15.447 INFO checking classif-0.0.2 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 16:38:15.447 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 16:38:15.764 INFO [stdout] 2d80ba90ecaff58d9472aef7f3aa50e656e6a049d963487afc89fce7b5e9c3ec
Dec 12 16:38:15.766 INFO running `"docker" "start" "-a" "2d80ba90ecaff58d9472aef7f3aa50e656e6a049d963487afc89fce7b5e9c3ec"`
Dec 12 16:38:16.669 INFO [stderr] usermod: no changes
Dec 12 16:38:16.733 INFO [stderr]     Checking classif v0.0.2 (/source)
Dec 12 16:38:18.002 INFO [stderr] warning: variable does not need to be mutable
Dec 12 16:38:18.002 INFO [stderr]   --> src/jenks.rs:25:13
Dec 12 16:38:18.002 INFO [stderr]    |
Dec 12 16:38:18.008 INFO [stderr] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
Dec 12 16:38:18.008 INFO [stderr]    |             ----^
Dec 12 16:38:18.008 INFO [stderr]    |             |
Dec 12 16:38:18.008 INFO [stderr]    |             help: remove this `mut`
Dec 12 16:38:18.008 INFO [stderr]    |
Dec 12 16:38:18.008 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 16:38:18.008 INFO [stderr] 
Dec 12 16:38:18.012 INFO [stderr] warning: variable does not need to be mutable
Dec 12 16:38:18.012 INFO [stderr]   --> src/jenks.rs:25:13
Dec 12 16:38:18.012 INFO [stderr]    |
Dec 12 16:38:18.012 INFO [stderr] 25 |         let mut v = unsafe { self.values.get_unchecked_mut(ix.0 * self.dim + ix.1) };
Dec 12 16:38:18.012 INFO [stderr]    |             ----^
Dec 12 16:38:18.012 INFO [stderr]    |             |
Dec 12 16:38:18.012 INFO [stderr]    |             help: remove this `mut`
Dec 12 16:38:18.012 INFO [stderr]    |
Dec 12 16:38:18.012 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 16:38:18.012 INFO [stderr] 
Dec 12 16:38:18.021 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 16:38:18.021 INFO [stderr]  --> src/stats.rs:8:5
Dec 12 16:38:18.021 INFO [stderr]   |
Dec 12 16:38:18.021 INFO [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
Dec 12 16:38:18.021 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 16:38:18.021 INFO [stderr]   |
Dec 12 16:38:18.024 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 12 16:38:18.024 INFO [stderr]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 16:38:18.024 INFO [stderr] 
Dec 12 16:38:18.038 INFO [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
Dec 12 16:38:18.038 INFO [stderr]  --> src/stats.rs:8:5
Dec 12 16:38:18.038 INFO [stderr]   |
Dec 12 16:38:18.038 INFO [stderr] 8 |     values.iter().map(|v| sum += *v).collect::<Vec<_>>();
Dec 12 16:38:18.038 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 16:38:18.038 INFO [stderr]   |
Dec 12 16:38:18.038 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Dec 12 16:38:18.038 INFO [stderr]   = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Dec 12 16:38:18.038 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `mean`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:13:25
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 13 |     bench.iter(|| { let mean = stats::mean(&a); });
Dec 12 16:38:18.880 INFO [stderr]    |                         ^^^^ help: consider using `_mean` instead
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `mean`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:20:25
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 20 |     bench.iter(|| { let mean = stats::kurtosis(&a); });
Dec 12 16:38:18.880 INFO [stderr]    |                         ^^^^ help: consider using `_mean` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `mean`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:27:25
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 27 |     bench.iter(|| { let mean = stats::variance(&a); });
Dec 12 16:38:18.880 INFO [stderr]    |                         ^^^^ help: consider using `_mean` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `b`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:36:24
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 36 |                    let b = get_head_tail_breaks(&a);
Dec 12 16:38:18.880 INFO [stderr]    |                        ^ help: consider using `_b` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `b`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:44:25
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 44 |     bench.iter(|| { let b = BoundsInfo::new(5, &a, Classification::HeadTail).unwrap(); });
Dec 12 16:38:18.880 INFO [stderr]    |                         ^ help: consider using `_b` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `b`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:52:25
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 52 |     bench.iter(|| { let b = get_jenks_breaks(&a, 5); });
Dec 12 16:38:18.880 INFO [stderr]    |                         ^ help: consider using `_b` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `b`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:61:24
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 61 |                    let b = get_jenks_breaks(&a, 5);
Dec 12 16:38:18.880 INFO [stderr]    |                        ^ help: consider using `_b` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.880 INFO [stderr] warning: unused variable: `b`
Dec 12 16:38:18.880 INFO [stderr]   --> benches/benchmark.rs:69:25
Dec 12 16:38:18.880 INFO [stderr]    |
Dec 12 16:38:18.880 INFO [stderr] 69 |     bench.iter(|| { let b = BoundsInfo::new(5, &a, Classification::JenksNaturalBreaks).unwrap(); });
Dec 12 16:38:18.880 INFO [stderr]    |                         ^ help: consider using `_b` instead
Dec 12 16:38:18.880 INFO [stderr] 
Dec 12 16:38:18.904 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
Dec 12 16:38:18.904 INFO [stderr] su: No module specific data is present
Dec 12 16:38:19.198 INFO running `"docker" "inspect" "2d80ba90ecaff58d9472aef7f3aa50e656e6a049d963487afc89fce7b5e9c3ec"`
Dec 12 16:38:19.319 INFO running `"docker" "rm" "-f" "2d80ba90ecaff58d9472aef7f3aa50e656e6a049d963487afc89fce7b5e9c3ec"`
Dec 12 16:38:19.500 INFO [stdout] 2d80ba90ecaff58d9472aef7f3aa50e656e6a049d963487afc89fce7b5e9c3ec