[INFO] cloning repository https://github.com/Ryu1845/cutfd_lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ryu1845/cutfd_lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyu1845%2Fcutfd_lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyu1845%2Fcutfd_lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f80542d264e849b05c09daae503d30d714d42bf
[INFO] testing Ryu1845/cutfd_lib against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyu1845%2Fcutfd_lib" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ryu1845/cutfd_lib on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ryu1845/cutfd_lib
[INFO] finished tweaking git repo https://github.com/Ryu1845/cutfd_lib
[INFO] tweaked toml for git repo https://github.com/Ryu1845/cutfd_lib written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Ryu1845/cutfd_lib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rstats v1.0.13
[INFO] [stderr]   Downloaded indxvec v1.1.5
[INFO] [stderr]   Downloaded super_mass v0.1.0
[INFO] [stderr]   Downloaded rustfft v4.1.0
[INFO] [stderr]   Downloaded transpose v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b95eafb0bbac57cf7301de38d6c5d5c91a54df809c53f6e6876c63e30d3beb0
[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" "7b95eafb0bbac57cf7301de38d6c5d5c91a54df809c53f6e6876c63e30d3beb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b95eafb0bbac57cf7301de38d6c5d5c91a54df809c53f6e6876c63e30d3beb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b95eafb0bbac57cf7301de38d6c5d5c91a54df809c53f6e6876c63e30d3beb0", kill_on_drop: false }`
[INFO] [stdout] 7b95eafb0bbac57cf7301de38d6c5d5c91a54df809c53f6e6876c63e30d3beb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.60.0" "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] 351903a8de9b2caf6755e84ea0b3e0c7133e816453bec8107fcf7594f4675364
[INFO] running `Command { std: "docker" "start" "-a" "351903a8de9b2caf6755e84ea0b3e0c7133e816453bec8107fcf7594f4675364", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling strength_reduce v0.2.3
[INFO] [stderr]    Compiling indxvec v1.1.5
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling rstats v1.0.13
[INFO] [stderr]    Compiling transpose v0.2.1
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rustfft v4.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling super_mass v0.1.0
[INFO] [stderr]    Compiling cutfd_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 | /             match orig_sampl.next() {
[INFO] [stdout] 59 | |                 Some(sample) => match sample {
[INFO] [stdout] 60 | |                     Ok(sample) => Ok(orig_sampl_chunk.push(sample)),
[INFO] [stdout] 61 | |                     Err(err) => Err(err),
[INFO] [stdout] 62 | |                 },
[INFO] [stdout] 63 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 64 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 | /             match cp_sampl.next() {
[INFO] [stdout] 71 | |                 Some(sample) => match sample {
[INFO] [stdout] 72 | |                     Ok(sample) => Ok(cp_sampl_chunk.push(sample)),
[INFO] [stdout] 73 | |                     Err(err) => Err(err),
[INFO] [stdout] 74 | |                 },
[INFO] [stdout] 75 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 76 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 | /         match cp_sampl.next() {
[INFO] [stdout] 107 | |             Some(sample) => match sample {
[INFO] [stdout] 108 | |                 Ok(sample) => Ok(cp_sampl_chunk.push(sample as f64)),
[INFO] [stdout] 109 | |                 Err(err) => Err(err),
[INFO] [stdout] 110 | |             },
[INFO] [stdout] 111 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 112 | |         };
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 | /         match orig_samples.next() {
[INFO] [stdout] 116 | |             Some(sample) => match sample {
[INFO] [stdout] 117 | |                 Ok(sample) => Ok(window_samples.push(sample as f64)),
[INFO] [stdout] 118 | |                 Err(err) => Err(err),
[INFO] [stdout] 119 | |             },
[INFO] [stdout] 120 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 121 | |         };
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.41s
[INFO] running `Command { std: "docker" "inspect" "351903a8de9b2caf6755e84ea0b3e0c7133e816453bec8107fcf7594f4675364", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351903a8de9b2caf6755e84ea0b3e0c7133e816453bec8107fcf7594f4675364", kill_on_drop: false }`
[INFO] [stdout] 351903a8de9b2caf6755e84ea0b3e0c7133e816453bec8107fcf7594f4675364
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1afb3b50e676b3ca87ceef8e9687ce2a7f120a99e2b20ddd7c0d7fc7dab3e5f
[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" "f1afb3b50e676b3ca87ceef8e9687ce2a7f120a99e2b20ddd7c0d7fc7dab3e5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cutfd_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 | /             match orig_sampl.next() {
[INFO] [stdout] 59 | |                 Some(sample) => match sample {
[INFO] [stdout] 60 | |                     Ok(sample) => Ok(orig_sampl_chunk.push(sample)),
[INFO] [stdout] 61 | |                     Err(err) => Err(err),
[INFO] [stdout] 62 | |                 },
[INFO] [stdout] 63 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 64 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 | /             match cp_sampl.next() {
[INFO] [stdout] 71 | |                 Some(sample) => match sample {
[INFO] [stdout] 72 | |                     Ok(sample) => Ok(cp_sampl_chunk.push(sample)),
[INFO] [stdout] 73 | |                     Err(err) => Err(err),
[INFO] [stdout] 74 | |                 },
[INFO] [stdout] 75 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 76 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 | /         match cp_sampl.next() {
[INFO] [stdout] 107 | |             Some(sample) => match sample {
[INFO] [stdout] 108 | |                 Ok(sample) => Ok(cp_sampl_chunk.push(sample as f64)),
[INFO] [stdout] 109 | |                 Err(err) => Err(err),
[INFO] [stdout] 110 | |             },
[INFO] [stdout] 111 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 112 | |         };
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 | /         match orig_samples.next() {
[INFO] [stdout] 116 | |             Some(sample) => match sample {
[INFO] [stdout] 117 | |                 Ok(sample) => Ok(window_samples.push(sample as f64)),
[INFO] [stdout] 118 | |                 Err(err) => Err(err),
[INFO] [stdout] 119 | |             },
[INFO] [stdout] 120 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 121 | |         };
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 | /             match orig_sampl.next() {
[INFO] [stdout] 59 | |                 Some(sample) => match sample {
[INFO] [stdout] 60 | |                     Ok(sample) => Ok(orig_sampl_chunk.push(sample)),
[INFO] [stdout] 61 | |                     Err(err) => Err(err),
[INFO] [stdout] 62 | |                 },
[INFO] [stdout] 63 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 64 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 | /             match cp_sampl.next() {
[INFO] [stdout] 71 | |                 Some(sample) => match sample {
[INFO] [stdout] 72 | |                     Ok(sample) => Ok(cp_sampl_chunk.push(sample)),
[INFO] [stdout] 73 | |                     Err(err) => Err(err),
[INFO] [stdout] 74 | |                 },
[INFO] [stdout] 75 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 76 | |             };
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 | /         match cp_sampl.next() {
[INFO] [stdout] 107 | |             Some(sample) => match sample {
[INFO] [stdout] 108 | |                 Ok(sample) => Ok(cp_sampl_chunk.push(sample as f64)),
[INFO] [stdout] 109 | |                 Err(err) => Err(err),
[INFO] [stdout] 110 | |             },
[INFO] [stdout] 111 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 112 | |         };
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 | /         match orig_samples.next() {
[INFO] [stdout] 116 | |             Some(sample) => match sample {
[INFO] [stdout] 117 | |                 Ok(sample) => Ok(window_samples.push(sample as f64)),
[INFO] [stdout] 118 | |                 Err(err) => Err(err),
[INFO] [stdout] 119 | |             },
[INFO] [stdout] 120 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stdout] 121 | |         };
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "f1afb3b50e676b3ca87ceef8e9687ce2a7f120a99e2b20ddd7c0d7fc7dab3e5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1afb3b50e676b3ca87ceef8e9687ce2a7f120a99e2b20ddd7c0d7fc7dab3e5f", kill_on_drop: false }`
[INFO] [stdout] f1afb3b50e676b3ca87ceef8e9687ce2a7f120a99e2b20ddd7c0d7fc7dab3e5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 337a8b2175023ded56a8292fe0c5f1a265cad562ae01e198cd1c8eaaaf23110d
[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" "337a8b2175023ded56a8292fe0c5f1a265cad562ae01e198cd1c8eaaaf23110d", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 | /             match orig_sampl.next() {
[INFO] [stderr] 59 | |                 Some(sample) => match sample {
[INFO] [stderr] 60 | |                     Ok(sample) => Ok(orig_sampl_chunk.push(sample)),
[INFO] [stderr] 61 | |                     Err(err) => Err(err),
[INFO] [stderr] 62 | |                 },
[INFO] [stderr] 63 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stderr] 64 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 | /             match cp_sampl.next() {
[INFO] [stderr] 71 | |                 Some(sample) => match sample {
[INFO] [stderr] 72 | |                     Ok(sample) => Ok(cp_sampl_chunk.push(sample)),
[INFO] [stderr] 73 | |                     Err(err) => Err(err),
[INFO] [stderr] 74 | |                 },
[INFO] [stderr] 75 | |                 None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stderr] 76 | |             };
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 | /         match cp_sampl.next() {
[INFO] [stderr] 107 | |             Some(sample) => match sample {
[INFO] [stderr] 108 | |                 Ok(sample) => Ok(cp_sampl_chunk.push(sample as f64)),
[INFO] [stderr] 109 | |                 Err(err) => Err(err),
[INFO] [stderr] 110 | |             },
[INFO] [stderr] 111 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stderr] 112 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/lib.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 | /         match orig_samples.next() {
[INFO] [stderr] 116 | |             Some(sample) => match sample {
[INFO] [stderr] 117 | |                 Ok(sample) => Ok(window_samples.push(sample as f64)),
[INFO] [stderr] 118 | |                 Err(err) => Err(err),
[INFO] [stderr] 119 | |             },
[INFO] [stderr] 120 | |             None => Err(hound::Error::InvalidSampleFormat),
[INFO] [stderr] 121 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `cutfd_lib` (lib) generated 4 warnings
[INFO] [stderr] warning: `cutfd_lib` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cutfd_lib-2a32b3d4c7fc0601)
[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] [stderr]    Doc-tests cutfd_lib
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - find_beginning (line 22) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - find_beginning (line 22) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'Failed to open input waveform: IoError(Os { code: 2, kind: NotFound, message: "No such file or directory" })', src/lib.rs:4:6
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55efa846215d - std::backtrace_rs::backtrace::libunwind::trace::hee598835bc88d35b
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x55efa846215d - std::backtrace_rs::backtrace::trace_unsynchronized::h9cdc730ba5cf5d72
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55efa846215d - std::sys_common::backtrace::_print_fmt::h75aeaf7ed30e43fa
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stdout]    3:     0x55efa846215d - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h606862f787600875
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stdout]    4:     0x55efa847e32c - core::fmt::write::he803f0f418caf762
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/fmt/mod.rs:1190:17
[INFO] [stdout]    5:     0x55efa845f198 - std::io::Write::write_fmt::h70bc45872f37e7bb
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/io/mod.rs:1657:15
[INFO] [stdout]    6:     0x55efa8463bf7 - std::sys_common::backtrace::_print::h64d038cf8ac3e13e
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stdout]    7:     0x55efa8463bf7 - std::sys_common::backtrace::print::h359300b4a7fccf65
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stdout]    8:     0x55efa8463bf7 - std::panicking::default_hook::{{closure}}::hf51be35e2f510149
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x55efa84638c0 - std::panicking::default_hook::h03ca0f22e1d2d25e
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:314:9
[INFO] [stdout]   10:     0x55efa8464349 - std::panicking::rust_panic_with_hook::h3b7380e99b825b63
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:698:17
[INFO] [stdout]   11:     0x55efa8464037 - std::panicking::begin_panic_handler::{{closure}}::h8e849d0710154ce0
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:588:13
[INFO] [stdout]   12:     0x55efa8462624 - std::sys_common::backtrace::__rust_end_short_backtrace::hedcdaddbd4c46cc5
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stdout]   13:     0x55efa8463d49 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:584:5
[INFO] [stdout]   14:     0x55efa8443303 - core::panicking::panic_fmt::he1bbc7336d49a357
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/panicking.rs:143:14
[INFO] [stdout]   15:     0x55efa8443393 - core::result::unwrap_failed::h719f957ed74f93fd
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/result.rs:1749:5
[INFO] [stdout]   16:     0x55efa844bf9b - core::result::Result<T,E>::expect::h619877a13d1c9aa2
[INFO] [stdout]   17:     0x55efa8443e28 - rust_out::main::_doctest_main_src_lib_rs_22_0::h8c4414425222c271
[INFO] [stdout]   18:     0x55efa8443dd6 - rust_out::main::he239c4229bb09803
[INFO] [stdout]   19:     0x55efa8443b73 - core::ops::function::FnOnce::call_once::h13013349529417b5
[INFO] [stdout]   20:     0x55efa844c279 - std::sys_common::backtrace::__rust_begin_short_backtrace::hf40d275ec09763ca
[INFO] [stdout]   21:     0x55efa844c249 - std::rt::lang_start::{{closure}}::h3f8eb3e9838506c6
[INFO] [stdout]   22:     0x55efa8461841 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hb7014f43484a8b4e
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/core/src/ops/function.rs:259:13
[INFO] [stdout]   23:     0x55efa8461841 - std::panicking::try::do_call::h7bc9dc436daeb8c7
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:492:40
[INFO] [stdout]   24:     0x55efa8461841 - std::panicking::try::h653d68a27ff5f175
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:456:19
[INFO] [stdout]   25:     0x55efa8461841 - std::panic::catch_unwind::h9d739f9f59895e68
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panic.rs:137:14
[INFO] [stdout]   26:     0x55efa8461841 - std::rt::lang_start_internal::{{closure}}::hf006f2bc7ce22bbe
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/rt.rs:128:48
[INFO] [stdout]   27:     0x55efa8461841 - std::panicking::try::do_call::hfb39d6df61a2e69f
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:492:40
[INFO] [stdout]   28:     0x55efa8461841 - std::panicking::try::h13e2d225134958ac
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panicking.rs:456:19
[INFO] [stdout]   29:     0x55efa8461841 - std::panic::catch_unwind::h3bd49b5a5dfb1a50
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/panic.rs:137:14
[INFO] [stdout]   30:     0x55efa8461841 - std::rt::lang_start_internal::h2ba92edce36c035e
[INFO] [stdout]                                at /rustc/7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c/library/std/src/rt.rs:128:20
[INFO] [stdout]   31:     0x55efa844c231 - std::rt::lang_start::he6b3cd9500177830
[INFO] [stdout]   32:     0x55efa844d133 - main
[INFO] [stdout]   33:     0x7ffad276a0b3 - __libc_start_main
[INFO] [stdout]   34:     0x55efa8443a8e - _start
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - find_beginning (line 22)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.91s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "337a8b2175023ded56a8292fe0c5f1a265cad562ae01e198cd1c8eaaaf23110d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "337a8b2175023ded56a8292fe0c5f1a265cad562ae01e198cd1c8eaaaf23110d", kill_on_drop: false }`
[INFO] [stdout] 337a8b2175023ded56a8292fe0c5f1a265cad562ae01e198cd1c8eaaaf23110d