[INFO] cloning repository https://github.com/CyclotomicFields/cyclotomic
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CyclotomicFields/cyclotomic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyclotomicFields%2Fcyclotomic"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyclotomicFields%2Fcyclotomic'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 320e50685cc0411164eb36fa9032eccbb7383c81
[INFO] testing CyclotomicFields/cyclotomic against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyclotomicFields%2Fcyclotomic" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CyclotomicFields/cyclotomic on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/CyclotomicFields/cyclotomic
[INFO] finished tweaking git repo https://github.com/CyclotomicFields/cyclotomic
[INFO] tweaked toml for git repo https://github.com/CyclotomicFields/cyclotomic written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/CyclotomicFields/cyclotomic already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded combinations v0.1.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7b21681ec10ef642d63b76049d4c7c76ee4768e9836ab8e07fc53f8e12a01a72
[INFO] running `"docker" "start" "-a" "7b21681ec10ef642d63b76049d4c7c76ee4768e9836ab8e07fc53f8e12a01a72"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling combinations v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling divisors v0.2.1
[INFO] [stderr]    Compiling cyclotomic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `BigInt`
[INFO] [stderr]  --> src/divisors/divisors.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use self::num::{BigInt};
[INFO] [stderr]   |                 ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigInt`, `BigRational`
[INFO] [stderr]  --> src/divisors/library_divisors.rs:5:17
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::num::{BigInt, BigRational, Zero, ToPrimitive};
[INFO] [stderr]   |                 ^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigInt`, `BigRational`, `ToPrimitive`, `Zero`
[INFO] [stderr]  --> src/prime_factors/recursive_prime_factorize.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 | use self::num::{BigInt, BigRational, ToPrimitive, Zero};
[INFO] [stderr]   |                 ^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/coprime_counter/hybrid_coprime_counter.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let n_over_two = (n.div(&Z::from(2)));
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::pow::pow`
[INFO] [stderr]  --> src/polynomial.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::pow::pow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigRational`, `Integer`, `ToPrimitive`
[INFO] [stderr]  --> src/polynomial.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::num::{BigInt, BigRational, Zero, ToPrimitive, Integer};
[INFO] [stderr]   |                         ^^^^^^^^^^^        ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::divisors::divisors`
[INFO] [stderr]  --> src/polynomial.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::divisors::divisors;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `quickcheck::Arbitrary`
[INFO] [stderr]  --> src/fields/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use quickcheck::Arbitrary;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arbitrary`, `Gen`
[INFO] [stderr]  --> src/fields/naive.rs:6:18
[INFO] [stderr]   |
[INFO] [stderr] 6 | use quickcheck::{Arbitrary, Gen};
[INFO] [stderr]   |                  ^^^^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/fields/naive.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/fields/naive.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Product`
[INFO] [stderr]   --> src/fields/naive.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::iter::Product;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/fields/naive.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 |             for i in 0..*times {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ZPlus`
[INFO] [stderr]  --> src/primes/prime_table.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | type ZPlus = u64;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PrimeTableReader`
[INFO] [stderr]  --> src/primes/prime_table.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct PrimeTableReader<'a> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/primes/prime_table.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(directory_path: &Path) -> PrimeTableReader {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `first_million_from_file`
[INFO] [stderr]   --> src/primes/prime_table.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn first_million_from_file() -> Option<PrimeTableReader<'a>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `first_million_primes`
[INFO] [stderr]   --> src/primes/prime_table.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn first_million_primes(&self) -> Vec<ZPlus> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_primes_from_table`
[INFO] [stderr]   --> src/primes/prime_table.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn read_primes_from_table(primes_txt_content: String) -> Vec<ZPlus> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_primes_from_csv`
[INFO] [stderr]   --> src/primes/prime_table.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn read_primes_from_csv(primes_csv_content: String) -> Vec<ZPlus> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `R`
[INFO] [stderr]  --> src/primes/primes.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | type R = f64;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Z`
[INFO] [stderr]  --> src/primes/primes.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type Z = i64;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `first_n`
[INFO] [stderr]   --> src/primes/primes.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn first_n(&self, n: ZPlus) -> Option<Primes> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pi_range`
[INFO] [stderr]    --> src/primes/primes.rs:106:12
[INFO] [stderr]     |
[INFO] [stderr] 106 |     pub fn pi_range(&self, lower_bound: ZPlus, upper_bound: ZPlus) -> Option<ZPlus> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/prime_counter/legendre.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn new(primes: &Primes) -> Legendre {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `legendre_sum_phi`
[INFO] [stderr]    --> src/prime_counter/legendre.rs:151:12
[INFO] [stderr]     |
[INFO] [stderr] 151 |     pub fn legendre_sum_phi(&self, x: R, a: ZPlus) -> Z {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/prime_counter/meissel.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(primes: &Primes) -> Meissel {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/prime_counter/lehmer.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn new(primes: &Primes) -> Lehmer {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/divisors/library_divisors.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new() -> LibraryDivisors {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/prime_factors/recursive_prime_factorize.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(divisors_strategy: D) -> RecursivePrimeFactorize<D> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `default`
[INFO] [stderr]   --> src/prime_factors/recursive_prime_factorize.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn default() -> RecursivePrimeFactorize<LibraryDivisors> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Q`
[INFO] [stderr]  --> src/coprime_counter/hybrid_coprime_counter.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | type Q = num::rational::BigRational;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/coprime_counter/hybrid_coprime_counter.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(prime_factorizer: PF) -> HybridCoprimeCounter<PF> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `default`
[INFO] [stderr]   --> src/coprime_counter/hybrid_coprime_counter.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn default() -> HybridCoprimeCounter<RecursivePrimeFactorize<LibraryDivisors>> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Z`
[INFO] [stderr]   --> src/polynomial.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | type Z = num::bigint::BigInt;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Q`
[INFO] [stderr]   --> src/polynomial.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | type Q = num::rational::BigRational;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ZPlus`
[INFO] [stderr]   --> src/polynomial.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | type ZPlus = usize;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Polynomial`
[INFO] [stderr]   --> src/polynomial.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub struct Polynomial {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/polynomial.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(coefficients: Vec<Z>, degrees: Vec<ZPlus>) -> Polynomial {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `assert_sorted_ascending`
[INFO] [stderr]   --> src/polynomial.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn assert_sorted_ascending<T: PartialOrd + Display>(vec: &Vec<T>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute`
[INFO] [stderr]   --> src/polynomial.rs:39:12
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn substitute(&self, t: Q) -> Q {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_monic`
[INFO] [stderr]   --> src/polynomial.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn is_monic(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `degree`
[INFO] [stderr]   --> src/polynomial.rs:51:12
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn degree(&self) -> ZPlus {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_irreducible_over_q`
[INFO] [stderr]   --> src/polynomial.rs:55:12
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn is_irreducible_over_q(&self) -> Option<bool> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `are_coprime`
[INFO] [stderr]    --> src/fields/naive.rs:211:4
[INFO] [stderr]     |
[INFO] [stderr] 211 | fn are_coprime(x: &u64, y: &u64) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `phi`
[INFO] [stderr]    --> src/fields/naive.rs:224:4
[INFO] [stderr]     |
[INFO] [stderr] 224 | fn phi(n: &u64) -> u64 {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 46 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.91s
[INFO] running `"docker" "inspect" "7b21681ec10ef642d63b76049d4c7c76ee4768e9836ab8e07fc53f8e12a01a72"`
[INFO] running `"docker" "rm" "-f" "7b21681ec10ef642d63b76049d4c7c76ee4768e9836ab8e07fc53f8e12a01a72"`
[INFO] [stdout] 7b21681ec10ef642d63b76049d4c7c76ee4768e9836ab8e07fc53f8e12a01a72
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3d77c614fe4fae64a909b8aa4b5b3b5f595bfbf176a9e828c406fd7dae3d0768
[INFO] running `"docker" "start" "-a" "3d77c614fe4fae64a909b8aa4b5b3b5f595bfbf176a9e828c406fd7dae3d0768"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cyclotomic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]    --> src/primes/primes.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |     use std::path::Path;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]    --> src/prime_counter/legendre.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |     use std::path::Path;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]   --> src/prime_counter/meissel.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     use std::path::Path;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]   --> src/prime_counter/lehmer.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     use std::path::Path;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigInt`
[INFO] [stderr]  --> src/divisors/divisors.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use self::num::{BigInt};
[INFO] [stderr]   |                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigRational`
[INFO] [stderr]  --> src/divisors/library_divisors.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::num::{BigInt, BigRational, Zero, ToPrimitive};
[INFO] [stderr]   |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigRational`, `ToPrimitive`, `Zero`
[INFO] [stderr]  --> src/prime_factors/recursive_prime_factorize.rs:9:25
[INFO] [stderr]   |
[INFO] [stderr] 9 | use self::num::{BigInt, BigRational, ToPrimitive, Zero};
[INFO] [stderr]   |                         ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/coprime_counter/hybrid_coprime_counter.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let n_over_two = (n.div(&Z::from(2)));
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::pow::pow`
[INFO] [stderr]  --> src/polynomial.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::pow::pow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigRational`, `Integer`, `ToPrimitive`
[INFO] [stderr]  --> src/polynomial.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::num::{BigInt, BigRational, Zero, ToPrimitive, Integer};
[INFO] [stderr]   |                         ^^^^^^^^^^^        ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::divisors::divisors`
[INFO] [stderr]  --> src/polynomial.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::divisors::divisors;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `quickcheck::Arbitrary`
[INFO] [stderr]  --> src/fields/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use quickcheck::Arbitrary;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/fields/naive.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Product`
[INFO] [stderr]   --> src/fields/naive.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::iter::Product;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/fields/naive.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 |             for i in 0..*times {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `R`
[INFO] [stderr]  --> src/primes/primes.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | type R = f64;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Z`
[INFO] [stderr]  --> src/primes/primes.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type Z = i64;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Q`
[INFO] [stderr]  --> src/coprime_counter/hybrid_coprime_counter.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | type Q = num::rational::BigRational;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `are_coprime`
[INFO] [stderr]    --> src/fields/naive.rs:211:4
[INFO] [stderr]     |
[INFO] [stderr] 211 | fn are_coprime(x: &u64, y: &u64) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `phi`
[INFO] [stderr]    --> src/fields/naive.rs:224:4
[INFO] [stderr]     |
[INFO] [stderr] 224 | fn phi(n: &u64) -> u64 {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `"docker" "inspect" "3d77c614fe4fae64a909b8aa4b5b3b5f595bfbf176a9e828c406fd7dae3d0768"`
[INFO] running `"docker" "rm" "-f" "3d77c614fe4fae64a909b8aa4b5b3b5f595bfbf176a9e828c406fd7dae3d0768"`
[INFO] [stdout] 3d77c614fe4fae64a909b8aa4b5b3b5f595bfbf176a9e828c406fd7dae3d0768
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stdout] b2d385bce572902f1fb11b9fe9f0d43260b5095eddf9e7aed58d6ce03d1852b1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b2d385bce572902f1fb11b9fe9f0d43260b5095eddf9e7aed58d6ce03d1852b1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]    --> src/primes/primes.rs:148:9
[INFO] [stderr]     |
[INFO] [stderr] 148 |     use std::path::Path;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]    --> src/prime_counter/legendre.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |     use std::path::Path;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]   --> src/prime_counter/meissel.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     use std::path::Path;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]   --> src/prime_counter/lehmer.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     use std::path::Path;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigInt`
[INFO] [stderr]  --> src/divisors/divisors.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use self::num::{BigInt};
[INFO] [stderr]   |                 ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigRational`
[INFO] [stderr]  --> src/divisors/library_divisors.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::num::{BigInt, BigRational, Zero, ToPrimitive};
[INFO] [stderr]   |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigRational`, `ToPrimitive`, `Zero`
[INFO] [stderr]  --> src/prime_factors/recursive_prime_factorize.rs:9:25
[INFO] [stderr]   |
[INFO] [stderr] 9 | use self::num::{BigInt, BigRational, ToPrimitive, Zero};
[INFO] [stderr]   |                         ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/coprime_counter/hybrid_coprime_counter.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let n_over_two = (n.div(&Z::from(2)));
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::pow::pow`
[INFO] [stderr]  --> src/polynomial.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::pow::pow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigRational`, `Integer`, `ToPrimitive`
[INFO] [stderr]  --> src/polynomial.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::num::{BigInt, BigRational, Zero, ToPrimitive, Integer};
[INFO] [stderr]   |                         ^^^^^^^^^^^        ^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::divisors::divisors`
[INFO] [stderr]  --> src/polynomial.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::divisors::divisors;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `quickcheck::Arbitrary`
[INFO] [stderr]  --> src/fields/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use quickcheck::Arbitrary;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/fields/naive.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Product`
[INFO] [stderr]   --> src/fields/naive.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::iter::Product;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/fields/naive.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 |             for i in 0..*times {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `R`
[INFO] [stderr]  --> src/primes/primes.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | type R = f64;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Z`
[INFO] [stderr]  --> src/primes/primes.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type Z = i64;
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Q`
[INFO] [stderr]  --> src/coprime_counter/hybrid_coprime_counter.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | type Q = num::rational::BigRational;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `are_coprime`
[INFO] [stderr]    --> src/fields/naive.rs:211:4
[INFO] [stderr]     |
[INFO] [stderr] 211 | fn are_coprime(x: &u64, y: &u64) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `phi`
[INFO] [stderr]    --> src/fields/naive.rs:224:4
[INFO] [stderr]     |
[INFO] [stderr] 224 | fn phi(n: &u64) -> u64 {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cyclotomic-d84ad8a891139765
[INFO] [stdout] 
[INFO] [stdout] running 38 tests
[INFO] [stdout] test fields::naive::tests::zero_neq_one ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_irreducibility_check_edge_cases ... ok
[INFO] [stdout] test divisors::library_divisors::tests::test_divisors ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_irreducibility_check_taking_mod_p ... ignored
[INFO] [stdout] test divisors::library_divisors::tests::test_divisors_without_one ... ok
[INFO] [stdout] test coprime_counter::hybrid_coprime_counter::phi_tests::test_phi_small ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_monic_check ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_polynomial_substitution ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_irreducibility_check_eisenstein_criterion ... ok
[INFO] [stdout] test fields::naive::tests::zero_kills_all ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_irreducibility_check_rational_roots_theorem ... ok
[INFO] [stdout] test polynomial::polynomial_tests::test_irreducibility_no_result ... ok
[INFO] [stdout] test prime_counter::legendre::legendre_tests::test_legendre_sum ... ok
[INFO] [stdout] test prime_counter::lehmer::lehmer_tests::test_lehmer_slow ... ok
[INFO] [stdout] test prime_counter::meissel::meissel_tests::test_meissel_fast ... ok
[INFO] [stdout] test fields::naive::tests::add_has_inverses ... ok
[INFO] [stdout] test fields::naive::tests::zero_is_add_identity ... ok
[INFO] [stdout] test prime_counter::meissel::meissel_tests::test_meissel_slow ... ok
[INFO] [stdout] test prime_counter::lehmer::lehmer_tests::test_lehmer_fast ... ok
[INFO] [stdout] test prime_counter::lehmer::lehmer_tests::test_lehmer_single ... ok
[INFO] [stdout] test prime_factors::recursive_prime_factorize::recursive_prime_factorize_tests::test_prime_factorize ... ok
[INFO] [stdout] test primes::prime_table::prime_table_tests::test_read_primes_to_one_million ... ok
[INFO] [stdout] test primes::primes::primes_test::test_pi ... ok
[INFO] [stdout] test primes::primes::primes_test::test_primes_pi_slow ... ok
[INFO] [stdout] test primes::primes::primes_test::test_range ... ok
[INFO] [stdout] test primes::primes::primes_test::test_first_n ... ok
[INFO] [stdout] test prime_counter::legendre::legendre_tests::test_legendre_sum_phi ... ok
[INFO] [stdout] test primes::primes::primes_test::test_pi_range ... ok
[INFO] [stdout] test fields::naive::tests::mul_is_commutative ... ok
[INFO] [stdout] test fields::naive::tests::add_is_commutative ... ok
[INFO] [stdout] test fields::naive::tests::one_is_mul_identity ... ok
[INFO] [stdout] test fields::naive::tests::mul_is_associative ... ok
[INFO] [stdout] test fields::naive::tests::add_is_associative ... ok
[INFO] [stdout] test fields::naive::tests::mul_distributes_over_add ... ok
[INFO] [stdout] test fields::naive::tests::mul_has_inverses ... ok
[INFO] [stdout] test coprime_counter::hybrid_coprime_counter::phi_tests::test_phi_medium ... ok
[INFO] [stdout] test prime_counter::legendre::legendre_tests::test_legendre_fast ... ok
[INFO] [stdout] test prime_counter::legendre::legendre_tests::test_legendre_slow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b2d385bce572902f1fb11b9fe9f0d43260b5095eddf9e7aed58d6ce03d1852b1"`
[INFO] running `"docker" "rm" "-f" "b2d385bce572902f1fb11b9fe9f0d43260b5095eddf9e7aed58d6ce03d1852b1"`
[INFO] [stdout] b2d385bce572902f1fb11b9fe9f0d43260b5095eddf9e7aed58d6ce03d1852b1