[INFO] cloning repository https://github.com/Illuminate-dev/polysolve
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Illuminate-dev/polysolve" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIlluminate-dev%2Fpolysolve", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIlluminate-dev%2Fpolysolve'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2b172448f19cd1409498eef98e577fcf91d75f0
[INFO] testing Illuminate-dev/polysolve against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIlluminate-dev%2Fpolysolve" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Illuminate-dev/polysolve
[INFO] finished tweaking git repo https://github.com/Illuminate-dev/polysolve
[INFO] tweaked toml for git repo https://github.com/Illuminate-dev/polysolve written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Illuminate-dev/polysolve on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Illuminate-dev/polysolve already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e8b4e05e933b6b4ddfbd6ec56311dc2fea20eb85810bf53da08ff9131d7c0ab
[INFO] running `Command { std: "docker" "start" "-a" "3e8b4e05e933b6b4ddfbd6ec56311dc2fea20eb85810bf53da08ff9131d7c0ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e8b4e05e933b6b4ddfbd6ec56311dc2fea20eb85810bf53da08ff9131d7c0ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e8b4e05e933b6b4ddfbd6ec56311dc2fea20eb85810bf53da08ff9131d7c0ab", kill_on_drop: false }`
[INFO] [stdout] 3e8b4e05e933b6b4ddfbd6ec56311dc2fea20eb85810bf53da08ff9131d7c0ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbaa18c3caa73cb264930cf456f1a5d9163f5c3fd26efb6222a218a622f5c90e
[INFO] running `Command { std: "docker" "start" "-a" "dbaa18c3caa73cb264930cf456f1a5d9163f5c3fd26efb6222a218a622f5c90e", kill_on_drop: false }`
[INFO] [stderr]    Compiling polysolve v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Term` is never constructed
[INFO] [stdout]  --> src/types/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Term {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `evaluate` are never used
[INFO] [stdout]   --> src/types/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Term {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 14 |     fn new(coefficient: Number, degree: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn evaluate(&self, x: Number) -> Number {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PolynomialFunction` is never constructed
[INFO] [stdout]   --> src/types/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct PolynomialFunction {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `simplify`, `evaluate`, and `roots` are never used
[INFO] [stdout]   --> src/types/mod.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl PolynomialFunction {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 33 |     fn new(terms: Vec<Term>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn simplify(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn evaluate(&self, x: f64) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn roots(&self) -> Vec<Number> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gcd` is never used
[INFO] [stdout]  --> src/types/number.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn gcd(a: u32, b: u32) -> u32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]   --> src/types/number.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Number {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `simplify`, `not_zero`, `factors`, `is_integer`, and `pow` are never used
[INFO] [stdout]   --> src/types/number.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Number {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(numerator: u32, denominator: u32, sign: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn simplify(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn not_zero(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn factors(&self) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn is_integer(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn pow(&self, degree: i32) -> Number {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "dbaa18c3caa73cb264930cf456f1a5d9163f5c3fd26efb6222a218a622f5c90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbaa18c3caa73cb264930cf456f1a5d9163f5c3fd26efb6222a218a622f5c90e", kill_on_drop: false }`
[INFO] [stdout] dbaa18c3caa73cb264930cf456f1a5d9163f5c3fd26efb6222a218a622f5c90e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73d603177f201ab67736418a6d62d50c2b8aa5095a605e13470b2762e04c1bac
[INFO] running `Command { std: "docker" "start" "-a" "73d603177f201ab67736418a6d62d50c2b8aa5095a605e13470b2762e04c1bac", kill_on_drop: false }`
[INFO] [stderr]    Compiling polysolve v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Term` is never constructed
[INFO] [stdout]  --> src/types/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Term {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `evaluate` are never used
[INFO] [stdout]   --> src/types/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Term {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 14 |     fn new(coefficient: Number, degree: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn evaluate(&self, x: Number) -> Number {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PolynomialFunction` is never constructed
[INFO] [stdout]   --> src/types/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct PolynomialFunction {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `simplify`, `evaluate`, and `roots` are never used
[INFO] [stdout]   --> src/types/mod.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl PolynomialFunction {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 33 |     fn new(terms: Vec<Term>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn simplify(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn evaluate(&self, x: f64) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn roots(&self) -> Vec<Number> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gcd` is never used
[INFO] [stdout]  --> src/types/number.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn gcd(a: u32, b: u32) -> u32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]   --> src/types/number.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Number {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `simplify`, `not_zero`, `factors`, `is_integer`, and `pow` are never used
[INFO] [stdout]   --> src/types/number.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Number {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new(numerator: u32, denominator: u32, sign: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn simplify(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn not_zero(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn factors(&self) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn is_integer(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn pow(&self, degree: i32) -> Number {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "73d603177f201ab67736418a6d62d50c2b8aa5095a605e13470b2762e04c1bac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73d603177f201ab67736418a6d62d50c2b8aa5095a605e13470b2762e04c1bac", kill_on_drop: false }`
[INFO] [stdout] 73d603177f201ab67736418a6d62d50c2b8aa5095a605e13470b2762e04c1bac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 68f9054458fc3eb02fda7d7b441bbb0f36ff526e1e755dc5dfe6bbe28deb8bd5
[INFO] running `Command { std: "docker" "start" "-a" "68f9054458fc3eb02fda7d7b441bbb0f36ff526e1e755dc5dfe6bbe28deb8bd5", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Term` is never constructed
[INFO] [stderr]  --> src/types/mod.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct Term {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `evaluate` are never used
[INFO] [stderr]   --> src/types/mod.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl Term {
[INFO] [stderr]    | --------- associated items in this implementation
[INFO] [stderr] 14 |     fn new(coefficient: Number, degree: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 21 |     fn evaluate(&self, x: Number) -> Number {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `PolynomialFunction` is never constructed
[INFO] [stderr]   --> src/types/mod.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct PolynomialFunction {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `simplify`, `evaluate`, and `roots` are never used
[INFO] [stderr]   --> src/types/mod.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | impl PolynomialFunction {
[INFO] [stderr]    | ----------------------- associated items in this implementation
[INFO] [stderr] 33 |     fn new(terms: Vec<Term>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |     fn simplify(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |     pub fn evaluate(&self, x: f64) -> f64 {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 74 |     fn roots(&self) -> Vec<Number> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `gcd` is never used
[INFO] [stderr]  --> src/types/number.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn gcd(a: u32, b: u32) -> u32 {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Number` is never constructed
[INFO] [stderr]   --> src/types/number.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Number {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `simplify`, `not_zero`, `factors`, `is_integer`, and `pow` are never used
[INFO] [stderr]   --> src/types/number.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl Number {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr] 19 |     pub fn new(numerator: u32, denominator: u32, sign: bool) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 29 |     pub fn simplify(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 35 |     pub fn not_zero(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 39 |     pub fn factors(&self) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 47 |     pub fn is_integer(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |     pub fn pow(&self, degree: i32) -> Number {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `polysolve` (lib) generated 7 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/polysolve-a9a75a980c729fc3)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test types::number::tests::test_division ... ok
[INFO] [stdout] test types::number::tests::test_pow ... ok
[INFO] [stdout] test types::number::tests::test_simplify ... ok
[INFO] [stdout] test types::number::tests::test_multiplication ... ok
[INFO] [stdout] test types::tests::find_roots ... ok
[INFO] [stdout] test types::tests::find_roots_fractional ... ok
[INFO] [stdout] test types::tests::simplify ... ok
[INFO] [stdout] test types::tests::poly_new ... ok
[INFO] [stdout] test types::tests::evaluate ... ok
[INFO] [stdout] test types::tests::find_roots_irrational ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- types::tests::find_roots_irrational stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'types::tests::find_roots_irrational' (32) panicked at src/types/number.rs:73:21:
[INFO] [stdout] attempt to multiply with overflow
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59082954c992 - std::backtrace_rs::backtrace::libunwind::trace::h786de35fecf3582f
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59082954c992 - std::backtrace_rs::backtrace::trace_unsynchronized::h4a7da1a2a64387f1
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59082954c992 - std::sys::backtrace::_print_fmt::h6bd7d500070c788c
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x59082954c992 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h6d82c1afff976903
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x59082955ce4f - core::fmt::rt::Argument::fmt::hc4ce6d643d397690
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x59082955ce4f - core::fmt::write::hb1e7ca88b6a3936e
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x59082951a333 - std::io::default_write_fmt::haffd49d96f1984a8
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x59082951a333 - std::io::Write::write_fmt::h027871c57cf57c01
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x590829526202 - std::sys::backtrace::BacktraceLock::print::ha2430613ee79d059
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x59082952acdf - std::panicking::default_hook::{{closure}}::hdbd2db9e5c303cf6
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x59082952ab71 - std::panicking::default_hook::hed93c70cba5fdcf0
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5908294edd3e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd0ee8b569efc6a07
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x5908294edd3e - test::test_main_with_exit_callback::{{closure}}::hf10864b576ecd15d
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59082952b2ef - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3a55ca34534c0d00
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x59082952b2ef - std::panicking::panic_with_hook::h3862d766c2cec19b
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x59082952b116 - std::panicking::panic_handler::{{closure}}::hb95eb402b5e28ee1
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x590829526339 - std::sys::backtrace::__rust_end_short_backtrace::hf73a26dc1835d85a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x59082950ec2d - __rustc[6ed5915ee467787]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5908295648a0 - core::panicking::panic_fmt::h3454303eb8e6f7cd
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5908295643d7 - core::panicking::panic_const::panic_const_mul_overflow::h2a77e65d3c456c0e
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panicking.rs:180:17
[INFO] [stdout]   20:     0x5908294b7e6c - <polysolve::types::number::Number as core::ops::arith::Add>::add::h0639632ad8e8f941
[INFO] [stdout]                                at /opt/rustwide/workdir/src/types/number.rs:73:21
[INFO] [stdout]   21:     0x5908294be9c1 - polysolve::types::PolynomialFunction::_evaluate::{{closure}}::h4da9161c7becae4e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/types/mod.rs:71:38
[INFO] [stdout]   22:     0x5908294bd7c0 - <core::slice::iter::Iter<T> as core::iter::traits::iterator::Iterator>::fold::h64e1bb4567b5893a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/slice/iter/macros.rs:255:27
[INFO] [stdout]   23:     0x5908294be93e - polysolve::types::PolynomialFunction::_evaluate::ha8787c8243ef7fc1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/types/mod.rs:71:14
[INFO] [stdout]   24:     0x5908294be14b - polysolve::types::PolynomialFunction::roots::hb6dda5eb365d8aac
[INFO] [stdout]                                at /opt/rustwide/workdir/src/types/mod.rs:123:21
[INFO] [stdout]   25:     0x5908294cc01a - polysolve::types::tests::find_roots_irrational::h73dd6731917f4922
[INFO] [stdout]                                at /opt/rustwide/workdir/src/types/mod.rs:226:30
[INFO] [stdout]   26:     0x5908294cc337 - polysolve::types::tests::find_roots_irrational::{{closure}}::h6af4b487374ff8bb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/types/mod.rs:218:31
[INFO] [stdout]   27:     0x5908294bf236 - core::ops::function::FnOnce::call_once::h4c88007ba7037ea3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   28:     0x5908294edb1b - core::ops::function::FnOnce::call_once::ha729ee35d2fab541
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   29:     0x5908294edb1b - test::__rust_begin_short_backtrace::ha40f4db8207e1111
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:663:18
[INFO] [stdout]   30:     0x590829501b9d - test::run_test_in_process::{{closure}}::hc1b77cda5d44f0f3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:686:74
[INFO] [stdout]   31:     0x590829501b9d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h1dbea1de64785521
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   32:     0x590829501b9d - std::panicking::catch_unwind::do_call::hd5febe9affd5a1b3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:590:40
[INFO] [stdout]   33:     0x590829501b9d - std::panicking::catch_unwind::h51ea89627559b6f4
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:553:19
[INFO] [stdout]   34:     0x590829501b9d - std::panic::catch_unwind::hb8b8c2367cae3d66
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panic.rs:359:14
[INFO] [stdout]   35:     0x590829501b9d - test::run_test_in_process::ha5b55801407ea100
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:686:27
[INFO] [stdout]   36:     0x590829501b9d - test::run_test::{{closure}}::h0b9d4072b527abf5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:607:43
[INFO] [stdout]   37:     0x5908294db0b4 - test::run_test::{{closure}}::hb1056b5731205822
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:637:41
[INFO] [stdout]   38:     0x5908294db0b4 - std::sys::backtrace::__rust_begin_short_backtrace::hb61ff5a34023c7ef
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   39:     0x5908294de9ea - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hb0a83c0e8b353cff
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   40:     0x5908294de9ea - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb4f32cb008535298
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   41:     0x5908294de9ea - std::panicking::catch_unwind::do_call::h16d110e4fc35789a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:590:40
[INFO] [stdout]   42:     0x5908294de9ea - std::panicking::catch_unwind::hea9118f355699c4b
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:553:19
[INFO] [stdout]   43:     0x5908294de9ea - std::panic::catch_unwind::hf4b3c2a06d3f42f5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panic.rs:359:14
[INFO] [stdout]   44:     0x5908294de9ea - std::thread::Builder::spawn_unchecked_::{{closure}}::h3f4cb733a52d53d5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   45:     0x5908294de9ea - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4052f0967b37caeb
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   46:     0x59082952173f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7ec433abd3f148b4
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   47:     0x59082952173f - std::sys::thread::unix::Thread::new::thread_start::he514622d3d7ba65c
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   48:     0x7a66e58eaaa4 - <unknown>
[INFO] [stdout]   49:     0x7a66e5977a64 - clone
[INFO] [stdout]   50:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     types::tests::find_roots_irrational
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "68f9054458fc3eb02fda7d7b441bbb0f36ff526e1e755dc5dfe6bbe28deb8bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f9054458fc3eb02fda7d7b441bbb0f36ff526e1e755dc5dfe6bbe28deb8bd5", kill_on_drop: false }`
[INFO] [stdout] 68f9054458fc3eb02fda7d7b441bbb0f36ff526e1e755dc5dfe6bbe28deb8bd5
