[INFO] cloning repository https://github.com/samuel-cavalcanti/rust_fft_simple_implementation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samuel-cavalcanti/rust_fft_simple_implementation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuel-cavalcanti%2Frust_fft_simple_implementation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuel-cavalcanti%2Frust_fft_simple_implementation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ae518a69ad49ab284c8710b00d348a674041ef8
[INFO] testing samuel-cavalcanti/rust_fft_simple_implementation against 1.55.0 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuel-cavalcanti%2Frust_fft_simple_implementation" "/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/samuel-cavalcanti/rust_fft_simple_implementation on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samuel-cavalcanti/rust_fft_simple_implementation
[INFO] finished tweaking git repo https://github.com/samuel-cavalcanti/rust_fft_simple_implementation
[INFO] tweaked toml for git repo https://github.com/samuel-cavalcanti/rust_fft_simple_implementation written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/samuel-cavalcanti/rust_fft_simple_implementation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 714ed5abfbf4a8a65e1f9f5c40f1ceb45f5cde9de80d72f41c62ae005480ae3d
[INFO] running `Command { std: "docker" "start" "-a" "714ed5abfbf4a8a65e1f9f5c40f1ceb45f5cde9de80d72f41c62ae005480ae3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "714ed5abfbf4a8a65e1f9f5c40f1ceb45f5cde9de80d72f41c62ae005480ae3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714ed5abfbf4a8a65e1f9f5c40f1ceb45f5cde9de80d72f41c62ae005480ae3d", kill_on_drop: false }`
[INFO] [stdout] 714ed5abfbf4a8a65e1f9f5c40f1ceb45f5cde9de80d72f41c62ae005480ae3d
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42dcbf877828ef3a606278e38aa0b4b2153bbf2c945b26d63128a8d4bac1377b
[INFO] running `Command { std: "docker" "start" "-a" "42dcbf877828ef3a606278e38aa0b4b2153bbf2c945b26d63128a8d4bac1377b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_fft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `fft`
[INFO] [stdout]  --> src/fft_algorithm.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |  pub fn fft(signal: &Vec<Complex64>) -> Vec<Complex64> {
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ifft`
[INFO] [stdout]   --> src/fft_algorithm.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn ifft(signal: &Vec<Complex64>) -> Vec<Complex64> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fft_algorithm`
[INFO] [stdout]   --> src/fft_algorithm.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn fft_algorithm(signal: &Vec<Complex64>, d: f64) -> Vec<Complex64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_complex_vector_from_float_vector`
[INFO] [stdout]  --> src/product_of_polynomials.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn new_complex_vector_from_float_vector(vector: &Vec<f64>, size: usize) -> Vec<Complex64> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_new_size_power_of_two`
[INFO] [stdout]   --> src/product_of_polynomials.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn find_new_size_power_of_two(bigger_exp: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `product_of_polynomials`
[INFO] [stdout]   --> src/product_of_polynomials.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn product_of_polynomials(f_x: &Vec<f64>, g_x: &Vec<f64>) -> Vec<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "42dcbf877828ef3a606278e38aa0b4b2153bbf2c945b26d63128a8d4bac1377b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42dcbf877828ef3a606278e38aa0b4b2153bbf2c945b26d63128a8d4bac1377b", kill_on_drop: false }`
[INFO] [stdout] 42dcbf877828ef3a606278e38aa0b4b2153bbf2c945b26d63128a8d4bac1377b
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ab555f0b9d8df91adb62e5d2fbdc9a363b6a975843bf82bcf67e6d655dd0dbc
[INFO] running `Command { std: "docker" "start" "-a" "3ab555f0b9d8df91adb62e5d2fbdc9a363b6a975843bf82bcf67e6d655dd0dbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_fft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `fft`
[INFO] [stdout]  --> src/fft_algorithm.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |  pub fn fft(signal: &Vec<Complex64>) -> Vec<Complex64> {
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ifft`
[INFO] [stdout]   --> src/fft_algorithm.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn ifft(signal: &Vec<Complex64>) -> Vec<Complex64> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fft_algorithm`
[INFO] [stdout]   --> src/fft_algorithm.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn fft_algorithm(signal: &Vec<Complex64>, d: f64) -> Vec<Complex64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_complex_vector_from_float_vector`
[INFO] [stdout]  --> src/product_of_polynomials.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn new_complex_vector_from_float_vector(vector: &Vec<f64>, size: usize) -> Vec<Complex64> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_new_size_power_of_two`
[INFO] [stdout]   --> src/product_of_polynomials.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn find_new_size_power_of_two(bigger_exp: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `product_of_polynomials`
[INFO] [stdout]   --> src/product_of_polynomials.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn product_of_polynomials(f_x: &Vec<f64>, g_x: &Vec<f64>) -> Vec<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "3ab555f0b9d8df91adb62e5d2fbdc9a363b6a975843bf82bcf67e6d655dd0dbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ab555f0b9d8df91adb62e5d2fbdc9a363b6a975843bf82bcf67e6d655dd0dbc", kill_on_drop: false }`
[INFO] [stdout] 3ab555f0b9d8df91adb62e5d2fbdc9a363b6a975843bf82bcf67e6d655dd0dbc
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7e9d28428bbb75ddf41d8f2075cf65456d858899e770e1ef4a669d2797348c47
[INFO] running `Command { std: "docker" "start" "-a" "7e9d28428bbb75ddf41d8f2075cf65456d858899e770e1ef4a669d2797348c47", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `fft`
[INFO] [stderr]  --> src/fft_algorithm.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |  pub fn fft(signal: &Vec<Complex64>) -> Vec<Complex64> {
[INFO] [stderr]   |         ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ifft`
[INFO] [stderr]   --> src/fft_algorithm.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn ifft(signal: &Vec<Complex64>) -> Vec<Complex64> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fft_algorithm`
[INFO] [stderr]   --> src/fft_algorithm.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn fft_algorithm(signal: &Vec<Complex64>, d: f64) -> Vec<Complex64> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `new_complex_vector_from_float_vector`
[INFO] [stderr]  --> src/product_of_polynomials.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn new_complex_vector_from_float_vector(vector: &Vec<f64>, size: usize) -> Vec<Complex64> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_new_size_power_of_two`
[INFO] [stderr]   --> src/product_of_polynomials.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn find_new_size_power_of_two(bigger_exp: usize) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product_of_polynomials`
[INFO] [stderr]   --> src/product_of_polynomials.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn product_of_polynomials(f_x: &Vec<f64>, g_x: &Vec<f64>) -> Vec<f64> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_fft` (lib) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_fft-4b37d09ccf5d5f0c)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_fft
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_product_of_polynomials ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7e9d28428bbb75ddf41d8f2075cf65456d858899e770e1ef4a669d2797348c47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e9d28428bbb75ddf41d8f2075cf65456d858899e770e1ef4a669d2797348c47", kill_on_drop: false }`
[INFO] [stdout] 7e9d28428bbb75ddf41d8f2075cf65456d858899e770e1ef4a669d2797348c47