Dec 18 09:24:03.133 INFO checking wavelet-matrix-0.4.7 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:24:03.133 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/wavelet-matrix/0.4.7:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 09:24:03.606 INFO [stdout] 85b1a24587595a8aa5cb5c0a3a024716459cc00ae6120504ddf389c7096b6220
Dec 18 09:24:03.610 INFO running `"docker" "start" "-a" "85b1a24587595a8aa5cb5c0a3a024716459cc00ae6120504ddf389c7096b6220"`
Dec 18 09:24:05.607 INFO [stderr]     Checking easybench v0.1.4
Dec 18 09:24:05.607 INFO [stderr]     Checking succinct v0.4.4
Dec 18 09:24:07.522 INFO [stderr]     Checking wavelet-matrix v0.4.7 (/opt/crater/workdir)
Dec 18 09:24:09.572 INFO [stderr] warning: unused variable: `limit_secs`
Dec 18 09:24:09.572 INFO [stderr]   --> benches/easybench.rs:57:55
Dec 18 09:24:09.572 INFO [stderr]    |
Dec 18 09:24:09.572 INFO [stderr] 57 | fn overall_helper(num: usize, desc: &str, upper: u64, limit_secs: u64) {
Dec 18 09:24:09.572 INFO [stderr]    |                                                       ^^^^^^^^^^ help: consider using `_limit_secs` instead
Dec 18 09:24:09.572 INFO [stderr]    |
Dec 18 09:24:09.572 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 09:24:09.572 INFO [stderr] 
Dec 18 09:24:09.572 INFO [stderr] warning: value assigned to `errorpct` is never read
Dec 18 09:24:09.572 INFO [stderr]    --> benches/easybench.rs:332:13
Dec 18 09:24:09.572 INFO [stderr]     |
Dec 18 09:24:09.572 INFO [stderr] 332 |     let mut errorpct = 0.0;
Dec 18 09:24:09.572 INFO [stderr]     |             ^^^^^^^^
Dec 18 09:24:09.572 INFO [stderr]     |
Dec 18 09:24:09.572 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 18 09:24:09.572 INFO [stderr] 
Dec 18 09:24:09.576 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:24:09.576 INFO [stderr]   --> benches/easybench.rs:49:13
Dec 18 09:24:09.576 INFO [stderr]    |
Dec 18 09:24:09.576 INFO [stderr] 49 |         let mut rng = rand::weak_rng();
Dec 18 09:24:09.576 INFO [stderr]    |             ----^^^
Dec 18 09:24:09.576 INFO [stderr]    |             |
Dec 18 09:24:09.576 INFO [stderr]    |             help: remove this `mut`
Dec 18 09:24:09.576 INFO [stderr]    |
Dec 18 09:24:09.576 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 09:24:09.576 INFO [stderr] 
Dec 18 09:24:09.632 INFO [stderr] warning: function is never used: `statstical_helper`
Dec 18 09:24:09.632 INFO [stderr]    --> benches/easybench.rs:264:1
Dec 18 09:24:09.632 INFO [stderr]     |
Dec 18 09:24:09.632 INFO [stderr] 264 | fn statstical_helper(num: usize, lower: u64, upper: u64, k: usize) {
Dec 18 09:24:09.632 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:09.632 INFO [stderr]     |
Dec 18 09:24:09.632 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 09:24:09.632 INFO [stderr] 
Dec 18 09:24:09.632 INFO [stderr] warning: function is never used: `sum_uniform_find_sufficient_k`
Dec 18 09:24:09.632 INFO [stderr]    --> benches/easybench.rs:330:1
Dec 18 09:24:09.632 INFO [stderr]     |
Dec 18 09:24:09.632 INFO [stderr] 330 | fn sum_uniform_find_sufficient_k(num: usize, lower: u64, upper: u64, accuracy_pct: f64) -> usize {
Dec 18 09:24:09.632 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:09.632 INFO [stderr] 
Dec 18 09:24:09.632 INFO [stderr] warning: function is never used: `average`
Dec 18 09:24:09.632 INFO [stderr]    --> benches/easybench.rs:373:1
Dec 18 09:24:09.632 INFO [stderr]     |
Dec 18 09:24:09.632 INFO [stderr] 373 | fn average(r: &std::ops::Range<u64>) -> u64 {
Dec 18 09:24:09.632 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:09.633 INFO [stderr] 
Dec 18 09:24:09.633 INFO [stderr] warning: function is never used: `error_pct`
Dec 18 09:24:09.633 INFO [stderr]    --> benches/easybench.rs:377:1
Dec 18 09:24:09.633 INFO [stderr]     |
Dec 18 09:24:09.633 INFO [stderr] 377 | fn error_pct(computed: u64, actual: u64) -> f64 {
Dec 18 09:24:09.633 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:09.633 INFO [stderr] 
Dec 18 09:24:09.633 INFO [stderr] warning: function is never used: `statistical_performance`
Dec 18 09:24:09.633 INFO [stderr]    --> benches/easybench.rs:392:1
Dec 18 09:24:09.633 INFO [stderr]     |
Dec 18 09:24:09.633 INFO [stderr] 392 | fn statistical_performance() {
Dec 18 09:24:09.633 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:09.633 INFO [stderr] 
Dec 18 09:24:09.633 INFO [stderr] warning: function is never used: `statistical_sufficient_k`
Dec 18 09:24:09.633 INFO [stderr]    --> benches/easybench.rs:421:1
Dec 18 09:24:09.633 INFO [stderr]     |
Dec 18 09:24:09.633 INFO [stderr] 421 | fn statistical_sufficient_k() {
Dec 18 09:24:09.633 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:09.633 INFO [stderr] 
Dec 18 09:24:09.689 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.18s
Dec 18 09:24:10.366 INFO running `"docker" "inspect" "85b1a24587595a8aa5cb5c0a3a024716459cc00ae6120504ddf389c7096b6220"`
Dec 18 09:24:10.738 INFO running `"docker" "rm" "-f" "85b1a24587595a8aa5cb5c0a3a024716459cc00ae6120504ddf389c7096b6220"`
Dec 18 09:24:11.128 INFO [stdout] 85b1a24587595a8aa5cb5c0a3a024716459cc00ae6120504ddf389c7096b6220