Dec 14 07:31:42.145 INFO testing NewlineCoding/lab_8 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 07:31:42.145 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-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 14 07:31:42.371 INFO [stdout] bd0df70637f6d391ea70a207432941cec16a0e6ad67ae85283d5e6d135278985
Dec 14 07:31:42.373 INFO running `"docker" "start" "-a" "bd0df70637f6d391ea70a207432941cec16a0e6ad67ae85283d5e6d135278985"`
Dec 14 07:31:43.008 INFO [stderr] usermod: no changes
Dec 14 07:31:43.058 INFO [stderr]    Compiling mersenne_twister v1.1.0
Dec 14 07:31:43.774 INFO [stderr]    Compiling lab_8 v0.1.0 (/source)
Dec 14 07:31:44.109 INFO [stderr] warning: unused imports: `IndependentSample`, `Range`
Dec 14 07:31:44.109 INFO [stderr]  --> src/main.rs:6:27
Dec 14 07:31:44.109 INFO [stderr]   |
Dec 14 07:31:44.109 INFO [stderr] 6 | use rand::distributions::{IndependentSample, Range};
Dec 14 07:31:44.109 INFO [stderr]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^
Dec 14 07:31:44.109 INFO [stderr]   |
Dec 14 07:31:44.109 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 07:31:44.109 INFO [stderr] 
Dec 14 07:31:44.109 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 14 07:31:44.109 INFO [stderr]  --> src/main.rs:7:5
Dec 14 07:31:44.109 INFO [stderr]   |
Dec 14 07:31:44.109 INFO [stderr] 7 | use std::collections::HashSet;
Dec 14 07:31:44.109 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 07:31:44.110 INFO [stderr] 
Dec 14 07:31:44.110 INFO [stderr] warning: unused import: `mersenne_twister::MersenneTwister`
Dec 14 07:31:44.110 INFO [stderr]  --> src/main.rs:9:5
Dec 14 07:31:44.110 INFO [stderr]   |
Dec 14 07:31:44.110 INFO [stderr] 9 | use mersenne_twister::MersenneTwister;
Dec 14 07:31:44.110 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 07:31:44.110 INFO [stderr] 
Dec 14 07:31:44.110 INFO [stderr] warning: unused imports: `Rng`, `SeedableRng`
Dec 14 07:31:44.110 INFO [stderr]   --> src/main.rs:10:12
Dec 14 07:31:44.110 INFO [stderr]    |
Dec 14 07:31:44.110 INFO [stderr] 10 | use rand::{Rng, SeedableRng};
Dec 14 07:31:44.110 INFO [stderr]    |            ^^^  ^^^^^^^^^^^
Dec 14 07:31:44.110 INFO [stderr] 
Dec 14 07:31:44.110 INFO [stderr] warning: unused import: `Duration`
Dec 14 07:31:44.110 INFO [stderr]   --> src/main.rs:12:17
Dec 14 07:31:44.110 INFO [stderr]    |
Dec 14 07:31:44.110 INFO [stderr] 12 | use std::time::{Duration, Instant};
Dec 14 07:31:44.110 INFO [stderr]    |                 ^^^^^^^^
Dec 14 07:31:44.110 INFO [stderr] 
Dec 14 07:31:44.166 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 14 07:31:44.166 INFO [stderr]   --> src/main.rs:85:9
Dec 14 07:31:44.166 INFO [stderr]    |
Dec 14 07:31:44.166 INFO [stderr] 85 |         tests_per_core = n - 2
Dec 14 07:31:44.166 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 14 07:31:44.166 INFO [stderr]    |
Dec 14 07:31:44.166 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 14 07:31:44.166 INFO [stderr] 
Dec 14 07:31:44.166 INFO [stderr] warning: unused variable: `num_cpu`
Dec 14 07:31:44.166 INFO [stderr]    --> src/main.rs:113:9
Dec 14 07:31:44.166 INFO [stderr]     |
Dec 14 07:31:44.166 INFO [stderr] 113 |     let num_cpu = num_cpus::get();
Dec 14 07:31:44.166 INFO [stderr]     |         ^^^^^^^ help: consider using `_num_cpu` instead
Dec 14 07:31:44.166 INFO [stderr]     |
Dec 14 07:31:44.166 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 14 07:31:44.166 INFO [stderr] 
Dec 14 07:31:44.166 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 14 07:31:44.166 INFO [stderr]    --> src/main.rs:116:9
Dec 14 07:31:44.166 INFO [stderr]     |
Dec 14 07:31:44.166 INFO [stderr] 116 |         tests_per_core = n - 2
Dec 14 07:31:44.166 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 14 07:31:44.166 INFO [stderr] 
Dec 14 07:31:44.166 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.166 INFO [stderr]   --> src/main.rs:17:19
Dec 14 07:31:44.166 INFO [stderr]    |
Dec 14 07:31:44.166 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 14 07:31:44.166 INFO [stderr]    |                   ----^
Dec 14 07:31:44.166 INFO [stderr]    |                   |
Dec 14 07:31:44.166 INFO [stderr]    |                   help: remove this `mut`
Dec 14 07:31:44.166 INFO [stderr]    |
Dec 14 07:31:44.166 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 07:31:44.166 INFO [stderr] 
Dec 14 07:31:44.168 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.168 INFO [stderr]   --> src/main.rs:31:28
Dec 14 07:31:44.168 INFO [stderr]    |
Dec 14 07:31:44.168 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 14 07:31:44.168 INFO [stderr]    |                            ----^
Dec 14 07:31:44.168 INFO [stderr]    |                            |
Dec 14 07:31:44.168 INFO [stderr]    |                            help: remove this `mut`
Dec 14 07:31:44.168 INFO [stderr] 
Dec 14 07:31:44.168 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.168 INFO [stderr]   --> src/main.rs:31:40
Dec 14 07:31:44.168 INFO [stderr]    |
Dec 14 07:31:44.168 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 14 07:31:44.168 INFO [stderr]    |                                        ----^
Dec 14 07:31:44.168 INFO [stderr]    |                                        |
Dec 14 07:31:44.168 INFO [stderr]    |                                        help: remove this `mut`
Dec 14 07:31:44.168 INFO [stderr] 
Dec 14 07:31:44.168 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.168 INFO [stderr]   --> src/main.rs:52:14
Dec 14 07:31:44.168 INFO [stderr]    |
Dec 14 07:31:44.168 INFO [stderr] 52 | fn tu_finder(mut n: u64) -> (u64, u64) {
Dec 14 07:31:44.168 INFO [stderr]    |              ----^
Dec 14 07:31:44.168 INFO [stderr]    |              |
Dec 14 07:31:44.168 INFO [stderr]    |              help: remove this `mut`
Dec 14 07:31:44.168 INFO [stderr] 
Dec 14 07:31:44.175 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.175 INFO [stderr]   --> src/main.rs:79:27
Dec 14 07:31:44.175 INFO [stderr]    |
Dec 14 07:31:44.175 INFO [stderr] 79 | fn is_prime_mr_multi_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 14 07:31:44.175 INFO [stderr]    |                           ----^
Dec 14 07:31:44.175 INFO [stderr]    |                           |
Dec 14 07:31:44.175 INFO [stderr]    |                           help: remove this `mut`
Dec 14 07:31:44.175 INFO [stderr] 
Dec 14 07:31:44.175 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.175 INFO [stderr]   --> src/main.rs:82:9
Dec 14 07:31:44.175 INFO [stderr]    |
Dec 14 07:31:44.175 INFO [stderr] 82 |     let mut workers = ThreadPool::new_with_name("worker".into(), num_cpu);
Dec 14 07:31:44.175 INFO [stderr]    |         ----^^^^^^^
Dec 14 07:31:44.175 INFO [stderr]    |         |
Dec 14 07:31:44.175 INFO [stderr]    |         help: remove this `mut`
Dec 14 07:31:44.175 INFO [stderr] 
Dec 14 07:31:44.175 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.175 INFO [stderr]   --> src/main.rs:91:9
Dec 14 07:31:44.175 INFO [stderr]    |
Dec 14 07:31:44.175 INFO [stderr] 91 |     let mut t: u64 = tu_tuple.0;
Dec 14 07:31:44.175 INFO [stderr]    |         ----^
Dec 14 07:31:44.175 INFO [stderr]    |         |
Dec 14 07:31:44.175 INFO [stderr]    |         help: remove this `mut`
Dec 14 07:31:44.175 INFO [stderr] 
Dec 14 07:31:44.175 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.175 INFO [stderr]   --> src/main.rs:92:9
Dec 14 07:31:44.175 INFO [stderr]    |
Dec 14 07:31:44.175 INFO [stderr] 92 |     let mut u: u64 = tu_tuple.1;
Dec 14 07:31:44.175 INFO [stderr]    |         ----^
Dec 14 07:31:44.175 INFO [stderr]    |         |
Dec 14 07:31:44.176 INFO [stderr]    |         help: remove this `mut`
Dec 14 07:31:44.176 INFO [stderr] 
Dec 14 07:31:44.176 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.176 INFO [stderr]    --> src/main.rs:112:28
Dec 14 07:31:44.176 INFO [stderr]     |
Dec 14 07:31:44.176 INFO [stderr] 112 | fn is_prime_mr_single_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 14 07:31:44.176 INFO [stderr]     |                            ----^
Dec 14 07:31:44.176 INFO [stderr]     |                            |
Dec 14 07:31:44.176 INFO [stderr]     |                            help: remove this `mut`
Dec 14 07:31:44.176 INFO [stderr] 
Dec 14 07:31:44.176 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.176 INFO [stderr]    --> src/main.rs:122:9
Dec 14 07:31:44.176 INFO [stderr]     |
Dec 14 07:31:44.176 INFO [stderr] 122 |     let mut t: u64 = tu_tuple.0;
Dec 14 07:31:44.176 INFO [stderr]     |         ----^
Dec 14 07:31:44.176 INFO [stderr]     |         |
Dec 14 07:31:44.176 INFO [stderr]     |         help: remove this `mut`
Dec 14 07:31:44.176 INFO [stderr] 
Dec 14 07:31:44.176 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:44.176 INFO [stderr]    --> src/main.rs:123:9
Dec 14 07:31:44.176 INFO [stderr]     |
Dec 14 07:31:44.176 INFO [stderr] 123 |     let mut u: u64 = tu_tuple.1;
Dec 14 07:31:44.176 INFO [stderr]     |         ----^
Dec 14 07:31:44.176 INFO [stderr]     |         |
Dec 14 07:31:44.176 INFO [stderr]     |         help: remove this `mut`
Dec 14 07:31:44.176 INFO [stderr] 
Dec 14 07:31:44.178 INFO [stderr] warning: function is never used: `is_prime_naive`
Dec 14 07:31:44.178 INFO [stderr]   --> src/main.rs:17:1
Dec 14 07:31:44.178 INFO [stderr]    |
Dec 14 07:31:44.178 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 14 07:31:44.178 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 07:31:44.178 INFO [stderr]    |
Dec 14 07:31:44.178 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 07:31:44.178 INFO [stderr] 
Dec 14 07:31:44.849 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
Dec 14 07:31:44.849 INFO [stderr] su: No module specific data is present
Dec 14 07:31:45.127 INFO running `"docker" "inspect" "bd0df70637f6d391ea70a207432941cec16a0e6ad67ae85283d5e6d135278985"`
Dec 14 07:31:45.232 INFO running `"docker" "rm" "-f" "bd0df70637f6d391ea70a207432941cec16a0e6ad67ae85283d5e6d135278985"`
Dec 14 07:31:45.349 INFO [stdout] bd0df70637f6d391ea70a207432941cec16a0e6ad67ae85283d5e6d135278985
Dec 14 07:31:45.351 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-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 14 07:31:45.527 INFO [stdout] 5c39d376adb96de96b4ba037b1d148f6d65e03912d1d264045cf1e4be7d2a9bf
Dec 14 07:31:45.533 INFO running `"docker" "start" "-a" "5c39d376adb96de96b4ba037b1d148f6d65e03912d1d264045cf1e4be7d2a9bf"`
Dec 14 07:31:46.104 INFO [stderr] usermod: no changes
Dec 14 07:31:46.179 INFO [stderr]    Compiling lab_8 v0.1.0 (/source)
Dec 14 07:31:46.760 INFO [stderr] warning: unused imports: `IndependentSample`, `Range`
Dec 14 07:31:46.760 INFO [stderr]  --> src/main.rs:6:27
Dec 14 07:31:46.760 INFO [stderr]   |
Dec 14 07:31:46.760 INFO [stderr] 6 | use rand::distributions::{IndependentSample, Range};
Dec 14 07:31:46.760 INFO [stderr]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^
Dec 14 07:31:46.760 INFO [stderr]   |
Dec 14 07:31:46.760 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 14 07:31:46.760 INFO [stderr] 
Dec 14 07:31:46.760 INFO [stderr] warning: unused import: `std::collections::HashSet`
Dec 14 07:31:46.760 INFO [stderr]  --> src/main.rs:7:5
Dec 14 07:31:46.760 INFO [stderr]   |
Dec 14 07:31:46.760 INFO [stderr] 7 | use std::collections::HashSet;
Dec 14 07:31:46.760 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 07:31:46.760 INFO [stderr] 
Dec 14 07:31:46.760 INFO [stderr] warning: unused import: `mersenne_twister::MersenneTwister`
Dec 14 07:31:46.760 INFO [stderr]  --> src/main.rs:9:5
Dec 14 07:31:46.760 INFO [stderr]   |
Dec 14 07:31:46.760 INFO [stderr] 9 | use mersenne_twister::MersenneTwister;
Dec 14 07:31:46.760 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 07:31:46.760 INFO [stderr] 
Dec 14 07:31:46.760 INFO [stderr] warning: unused imports: `Rng`, `SeedableRng`
Dec 14 07:31:46.760 INFO [stderr]   --> src/main.rs:10:12
Dec 14 07:31:46.760 INFO [stderr]    |
Dec 14 07:31:46.760 INFO [stderr] 10 | use rand::{Rng, SeedableRng};
Dec 14 07:31:46.760 INFO [stderr]    |            ^^^  ^^^^^^^^^^^
Dec 14 07:31:46.760 INFO [stderr] 
Dec 14 07:31:46.761 INFO [stderr] warning: unused import: `Duration`
Dec 14 07:31:46.761 INFO [stderr]   --> src/main.rs:12:17
Dec 14 07:31:46.761 INFO [stderr]    |
Dec 14 07:31:46.761 INFO [stderr] 12 | use std::time::{Duration, Instant};
Dec 14 07:31:46.761 INFO [stderr]    |                 ^^^^^^^^
Dec 14 07:31:46.761 INFO [stderr] 
Dec 14 07:31:46.819 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 14 07:31:46.819 INFO [stderr]   --> src/main.rs:85:9
Dec 14 07:31:46.819 INFO [stderr]    |
Dec 14 07:31:46.819 INFO [stderr] 85 |         tests_per_core = n - 2
Dec 14 07:31:46.819 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 14 07:31:46.819 INFO [stderr]    |
Dec 14 07:31:46.819 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 14 07:31:46.819 INFO [stderr] 
Dec 14 07:31:46.819 INFO [stderr] warning: unused variable: `num_cpu`
Dec 14 07:31:46.819 INFO [stderr]    --> src/main.rs:113:9
Dec 14 07:31:46.819 INFO [stderr]     |
Dec 14 07:31:46.819 INFO [stderr] 113 |     let num_cpu = num_cpus::get();
Dec 14 07:31:46.819 INFO [stderr]     |         ^^^^^^^ help: consider using `_num_cpu` instead
Dec 14 07:31:46.819 INFO [stderr]     |
Dec 14 07:31:46.819 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 14 07:31:46.819 INFO [stderr] 
Dec 14 07:31:46.819 INFO [stderr] warning: value assigned to `tests_per_core` is never read
Dec 14 07:31:46.819 INFO [stderr]    --> src/main.rs:116:9
Dec 14 07:31:46.819 INFO [stderr]     |
Dec 14 07:31:46.819 INFO [stderr] 116 |         tests_per_core = n - 2
Dec 14 07:31:46.819 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 14 07:31:46.819 INFO [stderr] 
Dec 14 07:31:46.820 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.820 INFO [stderr]   --> src/main.rs:17:19
Dec 14 07:31:46.820 INFO [stderr]    |
Dec 14 07:31:46.820 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 14 07:31:46.820 INFO [stderr]    |                   ----^
Dec 14 07:31:46.820 INFO [stderr]    |                   |
Dec 14 07:31:46.820 INFO [stderr]    |                   help: remove this `mut`
Dec 14 07:31:46.820 INFO [stderr]    |
Dec 14 07:31:46.820 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 14 07:31:46.820 INFO [stderr] 
Dec 14 07:31:46.823 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.823 INFO [stderr]   --> src/main.rs:31:28
Dec 14 07:31:46.823 INFO [stderr]    |
Dec 14 07:31:46.823 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 14 07:31:46.823 INFO [stderr]    |                            ----^
Dec 14 07:31:46.823 INFO [stderr]    |                            |
Dec 14 07:31:46.823 INFO [stderr]    |                            help: remove this `mut`
Dec 14 07:31:46.823 INFO [stderr] 
Dec 14 07:31:46.823 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.823 INFO [stderr]   --> src/main.rs:31:40
Dec 14 07:31:46.823 INFO [stderr]    |
Dec 14 07:31:46.823 INFO [stderr] 31 | fn modular_exp(mut a: u64, mut b: u64, mut c: u64) -> u64 {
Dec 14 07:31:46.823 INFO [stderr]    |                                        ----^
Dec 14 07:31:46.823 INFO [stderr]    |                                        |
Dec 14 07:31:46.823 INFO [stderr]    |                                        help: remove this `mut`
Dec 14 07:31:46.823 INFO [stderr] 
Dec 14 07:31:46.823 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.823 INFO [stderr]   --> src/main.rs:52:14
Dec 14 07:31:46.823 INFO [stderr]    |
Dec 14 07:31:46.823 INFO [stderr] 52 | fn tu_finder(mut n: u64) -> (u64, u64) {
Dec 14 07:31:46.823 INFO [stderr]    |              ----^
Dec 14 07:31:46.823 INFO [stderr]    |              |
Dec 14 07:31:46.823 INFO [stderr]    |              help: remove this `mut`
Dec 14 07:31:46.823 INFO [stderr] 
Dec 14 07:31:46.826 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.826 INFO [stderr]   --> src/main.rs:79:27
Dec 14 07:31:46.826 INFO [stderr]    |
Dec 14 07:31:46.826 INFO [stderr] 79 | fn is_prime_mr_multi_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 14 07:31:46.826 INFO [stderr]    |                           ----^
Dec 14 07:31:46.826 INFO [stderr]    |                           |
Dec 14 07:31:46.826 INFO [stderr]    |                           help: remove this `mut`
Dec 14 07:31:46.826 INFO [stderr] 
Dec 14 07:31:46.827 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.827 INFO [stderr]   --> src/main.rs:82:9
Dec 14 07:31:46.827 INFO [stderr]    |
Dec 14 07:31:46.827 INFO [stderr] 82 |     let mut workers = ThreadPool::new_with_name("worker".into(), num_cpu);
Dec 14 07:31:46.827 INFO [stderr]    |         ----^^^^^^^
Dec 14 07:31:46.827 INFO [stderr]    |         |
Dec 14 07:31:46.827 INFO [stderr]    |         help: remove this `mut`
Dec 14 07:31:46.827 INFO [stderr] 
Dec 14 07:31:46.827 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.827 INFO [stderr]   --> src/main.rs:91:9
Dec 14 07:31:46.827 INFO [stderr]    |
Dec 14 07:31:46.827 INFO [stderr] 91 |     let mut t: u64 = tu_tuple.0;
Dec 14 07:31:46.827 INFO [stderr]    |         ----^
Dec 14 07:31:46.827 INFO [stderr]    |         |
Dec 14 07:31:46.827 INFO [stderr]    |         help: remove this `mut`
Dec 14 07:31:46.827 INFO [stderr] 
Dec 14 07:31:46.827 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.827 INFO [stderr]   --> src/main.rs:92:9
Dec 14 07:31:46.827 INFO [stderr]    |
Dec 14 07:31:46.827 INFO [stderr] 92 |     let mut u: u64 = tu_tuple.1;
Dec 14 07:31:46.827 INFO [stderr]    |         ----^
Dec 14 07:31:46.827 INFO [stderr]    |         |
Dec 14 07:31:46.827 INFO [stderr]    |         help: remove this `mut`
Dec 14 07:31:46.827 INFO [stderr] 
Dec 14 07:31:46.830 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.830 INFO [stderr]    --> src/main.rs:112:28
Dec 14 07:31:46.830 INFO [stderr]     |
Dec 14 07:31:46.830 INFO [stderr] 112 | fn is_prime_mr_single_core(mut n: u64, mut tests_per_core: u64) -> bool {
Dec 14 07:31:46.830 INFO [stderr]     |                            ----^
Dec 14 07:31:46.830 INFO [stderr]     |                            |
Dec 14 07:31:46.830 INFO [stderr]     |                            help: remove this `mut`
Dec 14 07:31:46.831 INFO [stderr] 
Dec 14 07:31:46.831 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.831 INFO [stderr]    --> src/main.rs:122:9
Dec 14 07:31:46.831 INFO [stderr]     |
Dec 14 07:31:46.831 INFO [stderr] 122 |     let mut t: u64 = tu_tuple.0;
Dec 14 07:31:46.831 INFO [stderr]     |         ----^
Dec 14 07:31:46.831 INFO [stderr]     |         |
Dec 14 07:31:46.831 INFO [stderr]     |         help: remove this `mut`
Dec 14 07:31:46.831 INFO [stderr] 
Dec 14 07:31:46.831 INFO [stderr] warning: variable does not need to be mutable
Dec 14 07:31:46.831 INFO [stderr]    --> src/main.rs:123:9
Dec 14 07:31:46.831 INFO [stderr]     |
Dec 14 07:31:46.831 INFO [stderr] 123 |     let mut u: u64 = tu_tuple.1;
Dec 14 07:31:46.831 INFO [stderr]     |         ----^
Dec 14 07:31:46.831 INFO [stderr]     |         |
Dec 14 07:31:46.831 INFO [stderr]     |         help: remove this `mut`
Dec 14 07:31:46.831 INFO [stderr] 
Dec 14 07:31:46.835 INFO [stderr] warning: function is never used: `is_prime_naive`
Dec 14 07:31:46.835 INFO [stderr]   --> src/main.rs:17:1
Dec 14 07:31:46.835 INFO [stderr]    |
Dec 14 07:31:46.835 INFO [stderr] 17 | fn is_prime_naive(mut n: u64) -> bool {
Dec 14 07:31:46.835 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 14 07:31:46.835 INFO [stderr]    |
Dec 14 07:31:46.835 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 14 07:31:46.835 INFO [stderr] 
Dec 14 07:31:47.179 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
Dec 14 07:31:47.183 INFO [stderr] su: No module specific data is present
Dec 14 07:31:47.895 INFO running `"docker" "inspect" "5c39d376adb96de96b4ba037b1d148f6d65e03912d1d264045cf1e4be7d2a9bf"`
Dec 14 07:31:48.263 INFO running `"docker" "rm" "-f" "5c39d376adb96de96b4ba037b1d148f6d65e03912d1d264045cf1e4be7d2a9bf"`
Dec 14 07:31:48.555 INFO [stdout] 5c39d376adb96de96b4ba037b1d148f6d65e03912d1d264045cf1e4be7d2a9bf
Dec 14 07:31:48.557 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-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 14 07:31:49.076 INFO [stdout] 3238682f32dd8119e79cf147849be20440261e349b16133615bc3f9cb2548cb4
Dec 14 07:31:49.081 INFO running `"docker" "start" "-a" "3238682f32dd8119e79cf147849be20440261e349b16133615bc3f9cb2548cb4"`
Dec 14 07:31:50.293 INFO [stderr] usermod: no changes
Dec 14 07:31:50.367 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 14 07:31:50.367 INFO [stderr]      Running /target/debug/deps/lab_8-27161f30154b25c8
Dec 14 07:31:50.373 INFO [stdout] 
Dec 14 07:31:50.373 INFO [stdout] running 0 tests
Dec 14 07:31:50.373 INFO [stdout] 
Dec 14 07:31:50.373 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 07:31:50.373 INFO [stdout] 
Dec 14 07:31:50.373 INFO [stderr] su: No module specific data is present
Dec 14 07:31:50.983 INFO running `"docker" "inspect" "3238682f32dd8119e79cf147849be20440261e349b16133615bc3f9cb2548cb4"`
Dec 14 07:31:51.355 INFO running `"docker" "rm" "-f" "3238682f32dd8119e79cf147849be20440261e349b16133615bc3f9cb2548cb4"`
Dec 14 07:31:51.791 INFO [stdout] 3238682f32dd8119e79cf147849be20440261e349b16133615bc3f9cb2548cb4