[INFO] crate czt 0.3.6 is already in cache
[INFO] extracting crate czt 0.3.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/czt/0.3.6
[INFO] extracting crate czt 0.3.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/czt/0.3.6
[INFO] validating manifest of czt-0.3.6 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of czt-0.3.6 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing czt-0.3.6
[INFO] finished frobbing czt-0.3.6
[INFO] frobbed toml for czt-0.3.6 written to work/ex/beta-1.37-6/sources/1.36.0/reg/czt/0.3.6/Cargo.toml
[INFO] started frobbing czt-0.3.6
[INFO] finished frobbing czt-0.3.6
[INFO] frobbed toml for czt-0.3.6 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/czt/0.3.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing czt-0.3.6 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/czt/0.3.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 88c89b5bf322d23fbffa492de7e11131f704d40dc030690a860d674c06860566
[INFO] running `"docker" "start" "-a" "88c89b5bf322d23fbffa492de7e11131f704d40dc030690a860d674c06860566"`
[INFO] [stderr]    Compiling dft v0.5.5
[INFO] [stderr]    Compiling czt v0.3.6 (/opt/crater/workdir)
[INFO] [stderr] error[E0282]: type annotations needed for `num_complex::Complex<T>`
[INFO] [stderr]   --> src/transform.rs:23:19
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let one = Complex::one();
[INFO] [stderr]    |             ---   ^^^^^^^^^^^^ cannot infer type for `T`
[INFO] [stderr]    |             |
[INFO] [stderr]    |             consider giving `one` the explicit type `num_complex::Complex<T>`, where the type parameter `T` is specified
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0282`.
[INFO] [stderr] error: Could not compile `czt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "88c89b5bf322d23fbffa492de7e11131f704d40dc030690a860d674c06860566"`
[INFO] running `"docker" "rm" "-f" "88c89b5bf322d23fbffa492de7e11131f704d40dc030690a860d674c06860566"`
[INFO] [stdout] 88c89b5bf322d23fbffa492de7e11131f704d40dc030690a860d674c06860566