[INFO] cloning repository https://github.com/duganc/polynomial-rings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/duganc/polynomial-rings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduganc%2Fpolynomial-rings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduganc%2Fpolynomial-rings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93f50ef4a3841c0a287666a14f5747d162dfb0d4
[INFO] testing duganc/polynomial-rings against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fduganc%2Fpolynomial-rings" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/duganc/polynomial-rings on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/duganc/polynomial-rings
[INFO] finished tweaking git repo https://github.com/duganc/polynomial-rings
[INFO] tweaked toml for git repo https://github.com/duganc/polynomial-rings written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/duganc/polynomial-rings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08b0ee2269999da5cb79769f8c2e27c9192b3ff99105eff4facc66eca155cbea
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "08b0ee2269999da5cb79769f8c2e27c9192b3ff99105eff4facc66eca155cbea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08b0ee2269999da5cb79769f8c2e27c9192b3ff99105eff4facc66eca155cbea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08b0ee2269999da5cb79769f8c2e27c9192b3ff99105eff4facc66eca155cbea", kill_on_drop: false }`
[INFO] [stdout] 08b0ee2269999da5cb79769f8c2e27c9192b3ff99105eff4facc66eca155cbea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e662a2ffe21ffb4c441df4688f69578600a169ce7c5a481fd14ed71e1d09bad8
[INFO] running `Command { std: "docker" "start" "-a" "e662a2ffe21ffb4c441df4688f69578600a169ce7c5a481fd14ed71e1d09bad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling polynomial-rings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `num::complex::Complex`
[INFO] [stdout]  --> src/ring.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use num::complex::Complex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VARIABLE`
[INFO] [stdout]  --> src/ring.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const VARIABLE: &str = "x";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `zero`
[INFO] [stdout]   --> src/ring.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn zero() -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_degree`
[INFO] [stdout]   --> src/ring.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn get_degree(&self) -> i8 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ring.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string_term`
[INFO] [stdout]   --> src/ring.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn to_string_term(coefficient: T, variable: String, power: u16) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string_variable`
[INFO] [stdout]   --> src/ring.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn to_string_variable(variable: String, power: u16) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.36s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e662a2ffe21ffb4c441df4688f69578600a169ce7c5a481fd14ed71e1d09bad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e662a2ffe21ffb4c441df4688f69578600a169ce7c5a481fd14ed71e1d09bad8", kill_on_drop: false }`
[INFO] [stdout] e662a2ffe21ffb4c441df4688f69578600a169ce7c5a481fd14ed71e1d09bad8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 02902a973ec7e4a54b924be28115afa3a2f7ef1ba8e7629d9a110e4c35ffc2a4
[INFO] running `Command { std: "docker" "start" "-a" "02902a973ec7e4a54b924be28115afa3a2f7ef1ba8e7629d9a110e4c35ffc2a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling polynomial-rings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/polynomial_rings-e5b3b2e9e3af016a)
[INFO] running `Command { std: "docker" "inspect" "02902a973ec7e4a54b924be28115afa3a2f7ef1ba8e7629d9a110e4c35ffc2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02902a973ec7e4a54b924be28115afa3a2f7ef1ba8e7629d9a110e4c35ffc2a4", kill_on_drop: false }`
[INFO] [stdout] 02902a973ec7e4a54b924be28115afa3a2f7ef1ba8e7629d9a110e4c35ffc2a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 084c859c6d978022692c3f2c7eba31197cd3fe6eeb8bc49dd83bb7411caebce2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "084c859c6d978022692c3f2c7eba31197cd3fe6eeb8bc49dd83bb7411caebce2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/polynomial_rings-e5b3b2e9e3af016a)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test ring::test::test_degree ... ok
[INFO] [stdout] test ring::test::test_polynomial_adds ... ok
[INFO] [stdout] test ring::test::test_polynomial_adds_zero ... ok
[INFO] [stdout] test ring::test::test_polynomial_initializes ... ok
[INFO] [stdout] test ring::test::test_polynomial_multiplies ... ok
[INFO] [stdout] test ring::test::test_polynomial_multiplies_zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "084c859c6d978022692c3f2c7eba31197cd3fe6eeb8bc49dd83bb7411caebce2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084c859c6d978022692c3f2c7eba31197cd3fe6eeb8bc49dd83bb7411caebce2", kill_on_drop: false }`
[INFO] [stdout] 084c859c6d978022692c3f2c7eba31197cd3fe6eeb8bc49dd83bb7411caebce2