[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] d30fd3dbf8005db922c8de436ff641cfb2122653
[INFO] checking CyclotomicFields/cyclotomic against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyclotomicFields%2Fcyclotomic" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CyclotomicFields/cyclotomic on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "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-11/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=forbid" "-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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdecdce8c6f039999a7103bd8edd8ac3b5796c2e2a46078e03567fc9dda223a9
[INFO] running `"docker" "start" "-a" "bdecdce8c6f039999a7103bd8edd8ac3b5796c2e2a46078e03567fc9dda223a9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking combinations v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[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-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking divisors v0.2.1
[INFO] [stderr]     Checking cyclotomic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `num::pow::pow`
[INFO] [stderr]  --> src/polynomial.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use num::pow::pow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigRational`
[INFO] [stderr]  --> src/polynomial.rs:7:25
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::num::{BigInt, BigRational, Zero, ToPrimitive};
[INFO] [stderr]   |                         ^^^^^^^^^^^
[INFO] [stderr] 
[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: `num::pow::pow`
[INFO] [stderr]  --> src/polynomial.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use num::pow::pow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigRational`
[INFO] [stderr]  --> src/polynomial.rs:7:25
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::num::{BigInt, BigRational, Zero, ToPrimitive};
[INFO] [stderr]   |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::divisors::get_divisors`
[INFO] [stderr]   --> src/polynomial.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |     use super::divisors::get_divisors;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/fields/naive.rs:139:18
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn mul(self, rhs: Self) -> Self::Output {
[INFO] [stderr]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[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:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     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:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn first_million_primes(&self) -> Vec<ZPlus> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_primes`
[INFO] [stderr]   --> src/primes/prime_table.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn read_primes(primes_text_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: type alias is never used: `Z`
[INFO] [stderr]   --> src/polynomial.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | type Z = num::bigint::BigInt;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Q`
[INFO] [stderr]   --> src/polynomial.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | type Q = num::rational::BigRational;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ZPlus`
[INFO] [stderr]   --> src/polynomial.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | type ZPlus = usize;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Polynomial`
[INFO] [stderr]   --> src/polynomial.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Polynomial {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/polynomial.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |     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:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 |     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:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     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:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn is_monic(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_irreducible_over_z`
[INFO] [stderr]   --> src/polynomial.rs:48:12
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn is_irreducible_over_z(&self) -> Option<bool> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `divisors`
[INFO] [stderr]   --> src/polynomial.rs:84:8
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn divisors(z: Z) -> Vec<Z> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 27 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/fields/naive.rs:139:18
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn mul(self, rhs: Self) -> Self::Output {
[INFO] [stderr]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[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: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.78s
[INFO] running `"docker" "inspect" "bdecdce8c6f039999a7103bd8edd8ac3b5796c2e2a46078e03567fc9dda223a9"`
[INFO] running `"docker" "rm" "-f" "bdecdce8c6f039999a7103bd8edd8ac3b5796c2e2a46078e03567fc9dda223a9"`
[INFO] [stdout] bdecdce8c6f039999a7103bd8edd8ac3b5796c2e2a46078e03567fc9dda223a9