[INFO] fetching crate waveform_space 0.1.2...
[INFO] testing waveform_space-0.1.2 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate waveform_space 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate waveform_space 0.1.2 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate waveform_space 0.1.2
[INFO] finished tweaking crates.io crate waveform_space 0.1.2
[INFO] tweaked toml for crates.io crate waveform_space 0.1.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4a810895164407edba35748c94dfab5ff6436aa645f9ab70cad0bf8ef7abfce4
[INFO] running `"docker" "start" "-a" "4a810895164407edba35748c94dfab5ff6436aa645f9ab70cad0bf8ef7abfce4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling stream-dct v0.1.0
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rustfft v1.0.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling waveform_space v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::iter::Peekable`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::iter::Peekable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/lib.rs:152:14
[INFO] [stderr]     |
[INFO] [stderr] 152 |     fft.process(&signal[..], &mut spectrum[..]);
[INFO] [stderr]     |                 ^^^^^^^^^^^ expected struct `num_complex::Complex`, found struct `num::Complex`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected reference `&[num_complex::Complex<_>]`
[INFO] [stderr]                found reference `&[num::Complex<f32>]`
[INFO] [stderr]     = note: perhaps two different versions of crate `num_complex` are being used?
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/lib.rs:152:27
[INFO] [stderr]     |
[INFO] [stderr] 152 |     fft.process(&signal[..], &mut spectrum[..]);
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^ expected struct `num_complex::Complex`, found struct `num::Complex`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected mutable reference `&mut [num_complex::Complex<_>]`
[INFO] [stderr]                found mutable reference `&mut [num::Complex<f32>]`
[INFO] [stderr]     = note: perhaps two different versions of crate `num_complex` are being used?
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `waveform_space`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4a810895164407edba35748c94dfab5ff6436aa645f9ab70cad0bf8ef7abfce4"`
[INFO] running `"docker" "rm" "-f" "4a810895164407edba35748c94dfab5ff6436aa645f9ab70cad0bf8ef7abfce4"`
[INFO] [stdout] 4a810895164407edba35748c94dfab5ff6436aa645f9ab70cad0bf8ef7abfce4