Dec 18 06:15:05.953 INFO checking NewlineCoding/lab_8 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 06:15:05.953 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/NewlineCoding/lab_8:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:15:06.380 INFO [stdout] d88b56c4ed75b3b088a46d1a1ccb4bbf2e3ce1b209e040117271950a80a0be6c
Dec 18 06:15:06.382 INFO running `"docker" "start" "-a" "d88b56c4ed75b3b088a46d1a1ccb4bbf2e3ce1b209e040117271950a80a0be6c"`
Dec 18 06:15:07.924 INFO [stderr]     Checking mersenne_twister v1.1.0
Dec 18 06:15:08.644 INFO [stderr]     Checking lab_8 v0.1.0 (/opt/crater/workdir)
Dec 18 06:15:08.932 INFO [stderr] warning: unused imports: `IndependentSample`, `Range`
Dec 18 06:15:08.932 INFO [stderr]  --> src/main.rs:6:27
Dec 18 06:15:08.932 INFO [stderr]   |
Dec 18 06:15:08.932 INFO [stderr] 6 | use rand::distributions::{IndependentSample, Range};
Dec 18 06:15:08.932 INFO [stderr]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^
Dec 18 06:15:08.932 INFO [stderr]   |
Dec 18 06:15:08.932 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 06:15:08.932 INFO [stderr] 
Dec 18 06:15:08.932 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 18 06:15:08.932 INFO [stderr]  --> src/main.rs:7:5
Dec 18 06:15:08.932 INFO [stderr]   |
Dec 18 06:15:08.932 INFO [stderr] 7 | use std::collections::HashSet;
Dec 18 06:15:08.932 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:15:08.932 INFO [stderr] 
Dec 18 06:15:08.932 INFO [stderr] warning: unused import: `mersenne_twister::MersenneTwister`
Dec 18 06:15:08.933 INFO [stderr]  --> src/main.rs:9:5
Dec 18 06:15:08.933 INFO [stderr]   |
Dec 18 06:15:08.933 INFO [stderr] 9 | use mersenne_twister::MersenneTwister;
Dec 18 06:15:08.933 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:15:08.933 INFO [stderr] 
Dec 18 06:15:08.933 INFO [stderr] warning: unused imports: `Rng`, `SeedableRng`
Dec 18 06:15:08.933 INFO [stderr]   --> src/main.rs:10:12
Dec 18 06:15:08.933 INFO [stderr]    |
Dec 18 06:15:08.933 INFO [stderr] 10 | use rand::{Rng, SeedableRng};
Dec 18 06:15:08.933 INFO [stderr]    |            ^^^  ^^^^^^^^^^^
Dec 18 06:15:08.933 INFO [stderr] 
Dec 18 06:15:08.933 INFO [stderr] warning: unused import: `Duration`
Dec 18 06:15:08.933 INFO [stderr]   --> src/main.rs:12:17
Dec 18 06:15:08.933 INFO [stderr]    |
Dec 18 06:15:08.933 INFO [stderr] 12 | use std::time::{Duration, Instant};
Dec 18 06:15:08.933 INFO [stderr]    |                 ^^^^^^^^
Dec 18 06:15:08.933 INFO [stderr] 
Dec 18 06:15:08.964 INFO [stderr] warning: unused imports: `IndependentSample`, `Range`
Dec 18 06:15:08.964 INFO [stderr]  --> src/main.rs:6:27
Dec 18 06:15:08.964 INFO [stderr]   |
Dec 18 06:15:08.964 INFO [stderr] 6 | use rand::distributions::{IndependentSample, Range};
Dec 18 06:15:08.964 INFO [stderr]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^
Dec 18 06:15:08.964 INFO [stderr]   |
Dec 18 06:15:08.964 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 06:15:08.964 INFO [stderr] 
Dec 18 06:15:08.964 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 18 06:15:08.964 INFO [stderr]  --> src/main.rs:7:5
Dec 18 06:15:08.964 INFO [stderr]   |
Dec 18 06:15:08.964 INFO [stderr] 7 | use std::collections::HashSet;
Dec 18 06:15:08.964 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:15:08.964 INFO [stderr] 
Dec 18 06:15:08.964 INFO [stderr] warning: unused import: `mersenne_twister::MersenneTwister`
Dec 18 06:15:08.964 INFO [stderr]  --> src/main.rs:9:5
Dec 18 06:15:08.964 INFO [stderr]   |
Dec 18 06:15:08.964 INFO [stderr] 9 | use mersenne_twister::MersenneTwister;
Dec 18 06:15:08.964 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:15:08.964 INFO [stderr] 
Dec 18 06:15:08.964 INFO [stderr] warning: unused imports: `Rng`, `SeedableRng`
Dec 18 06:15:08.964 INFO [stderr]   --> src/main.rs:10:12
Dec 18 06:15:08.964 INFO [stderr]    |
Dec 18 06:15:08.964 INFO [stderr] 10 | use rand::{Rng, SeedableRng};
Dec 18 06:15:08.964 INFO [stderr]    |            ^^^  ^^^^^^^^^^^
Dec 18 06:15:08.964 INFO [stderr] 
Dec 18 06:15:08.964 INFO [stderr] warning: unused import: `Duration`
Dec 18 06:15:08.964 INFO [stderr]   --> src/main.rs:12:17
Dec 18 06:15:08.964 INFO [stderr]    |
Dec 18 06:15:08.964 INFO [stderr] 12 | use std::time::{Duration, Instant};
Dec 18 06:15:08.964 INFO [stderr]    |                 ^^^^^^^^
Dec 18 06:15:08.964 INFO [stderr] 
Dec 18 06:15:08.984 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 18 06:15:08.984 INFO [stderr]   --> src/main.rs:85:9
Dec 18 06:15:08.984 INFO [stderr]    |
Dec 18 06:15:08.984 INFO [stderr] 85 |         tests_per_core = n - 2
Dec 18 06:15:08.984 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 06:15:08.984 INFO [stderr]    |
Dec 18 06:15:08.984 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 06:15:08.984 INFO [stderr] 
Dec 18 06:15:08.984 INFO [stderr] warning: unused variable: `num_cpu`
Dec 18 06:15:08.984 INFO [stderr]    --> src/main.rs:113:9
Dec 18 06:15:08.984 INFO [stderr]     |
Dec 18 06:15:08.984 INFO [stderr] 113 |     let num_cpu = num_cpus::get();
Dec 18 06:15:08.984 INFO [stderr]     |         ^^^^^^^ help: consider using `_num_cpu` instead
Dec 18 06:15:08.984 INFO [stderr]     |
Dec 18 06:15:08.985 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 06:15:08.985 INFO [stderr] 
Dec 18 06:15:08.985 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 18 06:15:08.985 INFO [stderr]    --> src/main.rs:116:9
Dec 18 06:15:08.985 INFO [stderr]     |
Dec 18 06:15:08.985 INFO [stderr] 116 |         tests_per_core = n - 2
Dec 18 06:15:08.985 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 18 06:15:08.985 INFO [stderr] 
Dec 18 06:15:08.985 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.985 INFO [stderr]   --> src/main.rs:17:19
Dec 18 06:15:08.985 INFO [stderr]    |
Dec 18 06:15:08.985 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 18 06:15:08.985 INFO [stderr]    |                   ----^
Dec 18 06:15:08.985 INFO [stderr]    |                   |
Dec 18 06:15:08.985 INFO [stderr]    |                   help: remove this `mut`
Dec 18 06:15:08.985 INFO [stderr]    |
Dec 18 06:15:08.985 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 06:15:08.985 INFO [stderr] 
Dec 18 06:15:08.992 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.992 INFO [stderr]   --> src/main.rs:31:28
Dec 18 06:15:08.992 INFO [stderr]    |
Dec 18 06:15:08.992 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 18 06:15:08.992 INFO [stderr]    |                            ----^
Dec 18 06:15:08.992 INFO [stderr]    |                            |
Dec 18 06:15:08.992 INFO [stderr]    |                            help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]   --> src/main.rs:31:40
Dec 18 06:15:08.993 INFO [stderr]    |
Dec 18 06:15:08.993 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 18 06:15:08.993 INFO [stderr]    |                                        ----^
Dec 18 06:15:08.993 INFO [stderr]    |                                        |
Dec 18 06:15:08.993 INFO [stderr]    |                                        help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]   --> src/main.rs:52:14
Dec 18 06:15:08.993 INFO [stderr]    |
Dec 18 06:15:08.993 INFO [stderr] 52 | fn tu_finder(mut n: u64) -> (u64, u64) {
Dec 18 06:15:08.993 INFO [stderr]    |              ----^
Dec 18 06:15:08.993 INFO [stderr]    |              |
Dec 18 06:15:08.993 INFO [stderr]    |              help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]   --> src/main.rs:79:27
Dec 18 06:15:08.993 INFO [stderr]    |
Dec 18 06:15:08.993 INFO [stderr] 79 | fn is_prime_mr_multi_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 18 06:15:08.993 INFO [stderr]    |                           ----^
Dec 18 06:15:08.993 INFO [stderr]    |                           |
Dec 18 06:15:08.993 INFO [stderr]    |                           help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]   --> src/main.rs:82:9
Dec 18 06:15:08.993 INFO [stderr]    |
Dec 18 06:15:08.993 INFO [stderr] 82 |     let mut workers = ThreadPool::new_with_name("worker".into(), num_cpu);
Dec 18 06:15:08.993 INFO [stderr]    |         ----^^^^^^^
Dec 18 06:15:08.993 INFO [stderr]    |         |
Dec 18 06:15:08.993 INFO [stderr]    |         help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]   --> src/main.rs:91:9
Dec 18 06:15:08.993 INFO [stderr]    |
Dec 18 06:15:08.993 INFO [stderr] 91 |     let mut t: u64 = tu_tuple.0;
Dec 18 06:15:08.993 INFO [stderr]    |         ----^
Dec 18 06:15:08.993 INFO [stderr]    |         |
Dec 18 06:15:08.993 INFO [stderr]    |         help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]   --> src/main.rs:92:9
Dec 18 06:15:08.993 INFO [stderr]    |
Dec 18 06:15:08.993 INFO [stderr] 92 |     let mut u: u64 = tu_tuple.1;
Dec 18 06:15:08.993 INFO [stderr]    |         ----^
Dec 18 06:15:08.993 INFO [stderr]    |         |
Dec 18 06:15:08.993 INFO [stderr]    |         help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]    --> src/main.rs:112:28
Dec 18 06:15:08.993 INFO [stderr]     |
Dec 18 06:15:08.993 INFO [stderr] 112 | fn is_prime_mr_single_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 18 06:15:08.993 INFO [stderr]     |                            ----^
Dec 18 06:15:08.993 INFO [stderr]     |                            |
Dec 18 06:15:08.993 INFO [stderr]     |                            help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]    --> src/main.rs:122:9
Dec 18 06:15:08.993 INFO [stderr]     |
Dec 18 06:15:08.993 INFO [stderr] 122 |     let mut t: u64 = tu_tuple.0;
Dec 18 06:15:08.993 INFO [stderr]     |         ----^
Dec 18 06:15:08.993 INFO [stderr]     |         |
Dec 18 06:15:08.993 INFO [stderr]     |         help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:08.993 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:08.993 INFO [stderr]    --> src/main.rs:123:9
Dec 18 06:15:08.993 INFO [stderr]     |
Dec 18 06:15:08.993 INFO [stderr] 123 |     let mut u: u64 = tu_tuple.1;
Dec 18 06:15:08.993 INFO [stderr]     |         ----^
Dec 18 06:15:08.993 INFO [stderr]     |         |
Dec 18 06:15:08.993 INFO [stderr]     |         help: remove this `mut`
Dec 18 06:15:08.993 INFO [stderr] 
Dec 18 06:15:09.000 INFO [stderr] warning: function is never used: `is_prime_naive`
Dec 18 06:15:09.000 INFO [stderr]   --> src/main.rs:17:1
Dec 18 06:15:09.000 INFO [stderr]    |
Dec 18 06:15:09.000 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 18 06:15:09.000 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:15:09.000 INFO [stderr]    |
Dec 18 06:15:09.000 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:15:09.000 INFO [stderr] 
Dec 18 06:15:09.050 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 18 06:15:09.050 INFO [stderr]   --> src/main.rs:85:9
Dec 18 06:15:09.050 INFO [stderr]    |
Dec 18 06:15:09.050 INFO [stderr] 85 |         tests_per_core = n - 2
Dec 18 06:15:09.050 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 06:15:09.050 INFO [stderr]    |
Dec 18 06:15:09.050 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 06:15:09.051 INFO [stderr] 
Dec 18 06:15:09.051 INFO [stderr] warning: unused variable: `num_cpu`
Dec 18 06:15:09.051 INFO [stderr]    --> src/main.rs:113:9
Dec 18 06:15:09.051 INFO [stderr]     |
Dec 18 06:15:09.051 INFO [stderr] 113 |     let num_cpu = num_cpus::get();
Dec 18 06:15:09.051 INFO [stderr]     |         ^^^^^^^ help: consider using `_num_cpu` instead
Dec 18 06:15:09.051 INFO [stderr]     |
Dec 18 06:15:09.051 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 06:15:09.051 INFO [stderr] 
Dec 18 06:15:09.051 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 18 06:15:09.051 INFO [stderr]    --> src/main.rs:116:9
Dec 18 06:15:09.051 INFO [stderr]     |
Dec 18 06:15:09.051 INFO [stderr] 116 |         tests_per_core = n - 2
Dec 18 06:15:09.051 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 18 06:15:09.051 INFO [stderr] 
Dec 18 06:15:09.055 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.055 INFO [stderr]   --> src/main.rs:17:19
Dec 18 06:15:09.055 INFO [stderr]    |
Dec 18 06:15:09.055 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 18 06:15:09.055 INFO [stderr]    |                   ----^
Dec 18 06:15:09.055 INFO [stderr]    |                   |
Dec 18 06:15:09.055 INFO [stderr]    |                   help: remove this `mut`
Dec 18 06:15:09.055 INFO [stderr]    |
Dec 18 06:15:09.055 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 06:15:09.055 INFO [stderr] 
Dec 18 06:15:09.068 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.068 INFO [stderr]   --> src/main.rs:31:28
Dec 18 06:15:09.068 INFO [stderr]    |
Dec 18 06:15:09.068 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 18 06:15:09.068 INFO [stderr]    |                            ----^
Dec 18 06:15:09.068 INFO [stderr]    |                            |
Dec 18 06:15:09.068 INFO [stderr]    |                            help: remove this `mut`
Dec 18 06:15:09.068 INFO [stderr] 
Dec 18 06:15:09.068 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.068 INFO [stderr]   --> src/main.rs:31:40
Dec 18 06:15:09.069 INFO [stderr]    |
Dec 18 06:15:09.069 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 18 06:15:09.069 INFO [stderr]    |                                        ----^
Dec 18 06:15:09.069 INFO [stderr]    |                                        |
Dec 18 06:15:09.069 INFO [stderr]    |                                        help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]   --> src/main.rs:52:14
Dec 18 06:15:09.069 INFO [stderr]    |
Dec 18 06:15:09.069 INFO [stderr] 52 | fn tu_finder(mut n: u64) -> (u64, u64) {
Dec 18 06:15:09.069 INFO [stderr]    |              ----^
Dec 18 06:15:09.069 INFO [stderr]    |              |
Dec 18 06:15:09.069 INFO [stderr]    |              help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]   --> src/main.rs:79:27
Dec 18 06:15:09.069 INFO [stderr]    |
Dec 18 06:15:09.069 INFO [stderr] 79 | fn is_prime_mr_multi_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 18 06:15:09.069 INFO [stderr]    |                           ----^
Dec 18 06:15:09.069 INFO [stderr]    |                           |
Dec 18 06:15:09.069 INFO [stderr]    |                           help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]   --> src/main.rs:82:9
Dec 18 06:15:09.069 INFO [stderr]    |
Dec 18 06:15:09.069 INFO [stderr] 82 |     let mut workers = ThreadPool::new_with_name("worker".into(), num_cpu);
Dec 18 06:15:09.069 INFO [stderr]    |         ----^^^^^^^
Dec 18 06:15:09.069 INFO [stderr]    |         |
Dec 18 06:15:09.069 INFO [stderr]    |         help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]   --> src/main.rs:91:9
Dec 18 06:15:09.069 INFO [stderr]    |
Dec 18 06:15:09.069 INFO [stderr] 91 |     let mut t: u64 = tu_tuple.0;
Dec 18 06:15:09.069 INFO [stderr]    |         ----^
Dec 18 06:15:09.069 INFO [stderr]    |         |
Dec 18 06:15:09.069 INFO [stderr]    |         help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]   --> src/main.rs:92:9
Dec 18 06:15:09.069 INFO [stderr]    |
Dec 18 06:15:09.069 INFO [stderr] 92 |     let mut u: u64 = tu_tuple.1;
Dec 18 06:15:09.069 INFO [stderr]    |         ----^
Dec 18 06:15:09.069 INFO [stderr]    |         |
Dec 18 06:15:09.069 INFO [stderr]    |         help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]    --> src/main.rs:112:28
Dec 18 06:15:09.069 INFO [stderr]     |
Dec 18 06:15:09.069 INFO [stderr] 112 | fn is_prime_mr_single_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 18 06:15:09.069 INFO [stderr]     |                            ----^
Dec 18 06:15:09.069 INFO [stderr]     |                            |
Dec 18 06:15:09.069 INFO [stderr]     |                            help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]    --> src/main.rs:122:9
Dec 18 06:15:09.069 INFO [stderr]     |
Dec 18 06:15:09.069 INFO [stderr] 122 |     let mut t: u64 = tu_tuple.0;
Dec 18 06:15:09.069 INFO [stderr]     |         ----^
Dec 18 06:15:09.069 INFO [stderr]     |         |
Dec 18 06:15:09.069 INFO [stderr]     |         help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.069 INFO [stderr] warning: variable does not need to be mutable
Dec 18 06:15:09.069 INFO [stderr]    --> src/main.rs:123:9
Dec 18 06:15:09.069 INFO [stderr]     |
Dec 18 06:15:09.069 INFO [stderr] 123 |     let mut u: u64 = tu_tuple.1;
Dec 18 06:15:09.069 INFO [stderr]     |         ----^
Dec 18 06:15:09.069 INFO [stderr]     |         |
Dec 18 06:15:09.069 INFO [stderr]     |         help: remove this `mut`
Dec 18 06:15:09.069 INFO [stderr] 
Dec 18 06:15:09.072 INFO [stderr] warning: function is never used: `is_prime_naive`
Dec 18 06:15:09.072 INFO [stderr]   --> src/main.rs:17:1
Dec 18 06:15:09.072 INFO [stderr]    |
Dec 18 06:15:09.072 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 18 06:15:09.072 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:15:09.072 INFO [stderr]    |
Dec 18 06:15:09.072 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:15:09.072 INFO [stderr] 
Dec 18 06:15:09.108 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
Dec 18 06:15:10.071 INFO running `"docker" "inspect" "d88b56c4ed75b3b088a46d1a1ccb4bbf2e3ce1b209e040117271950a80a0be6c"`
Dec 18 06:15:10.331 INFO running `"docker" "rm" "-f" "d88b56c4ed75b3b088a46d1a1ccb4bbf2e3ce1b209e040117271950a80a0be6c"`
Dec 18 06:15:10.551 INFO [stdout] d88b56c4ed75b3b088a46d1a1ccb4bbf2e3ce1b209e040117271950a80a0be6c