Nov 04 11:33:38.647 INFO checking Techno-coder/signal_processing against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 11:33:38.647 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-3/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2ad8c7b3502616aff142a4640cce911c6c2c5463-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 04 11:33:38.863 INFO blam! 4fbf725a086186f7bd6527ed3e0f6065e1b1da7fed3a176d3202af4a9cff0878
Nov 04 11:33:38.864 INFO running `"docker" "start" "-a" "4fbf725a086186f7bd6527ed3e0f6065e1b1da7fed3a176d3202af4a9cff0878"`
Nov 04 11:33:39.429 INFO kablam! usermod: no changes
Nov 04 11:33:39.547 INFO kablam!     Checking rustfft v2.1.0
Nov 04 11:33:41.083 INFO kablam!     Checking signal_processing v0.1.0 (/source)
Nov 04 11:33:42.922 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 04 11:33:42.922 INFO kablam!   --> src/convolution.rs:44:6
Nov 04 11:33:42.922 INFO kablam!    |
Nov 04 11:33:42.922 INFO kablam! 44 |     use test::Bencher;
Nov 04 11:33:42.922 INFO kablam!    |         ^^^^
Nov 04 11:33:42.922 INFO kablam!    |
Nov 04 11:33:42.923 INFO kablam!    = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 04 11:33:42.923 INFO kablam! 
Nov 04 11:33:42.923 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 04 11:33:42.923 INFO kablam!    --> src/short_time_fourier.rs:121:6
Nov 04 11:33:42.923 INFO kablam!     |
Nov 04 11:33:42.923 INFO kablam! 121 |     use test::Bencher;
Nov 04 11:33:42.923 INFO kablam!     |         ^^^^
Nov 04 11:33:42.923 INFO kablam!     |
Nov 04 11:33:42.923 INFO kablam!     = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 04 11:33:42.923 INFO kablam! 
Nov 04 11:33:42.923 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 04 11:33:42.923 INFO kablam!    --> src/phase_vocoder.rs:168:6
Nov 04 11:33:42.923 INFO kablam!     |
Nov 04 11:33:42.923 INFO kablam! 168 |     use test::Bencher;
Nov 04 11:33:42.923 INFO kablam!     |         ^^^^
Nov 04 11:33:42.923 INFO kablam!     |
Nov 04 11:33:42.923 INFO kablam!     = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 04 11:33:42.923 INFO kablam! 
Nov 04 11:33:42.923 INFO kablam! error[E0658]: use of extern prelude names introduced with `extern crate` items is unstable (see issue #54658)
Nov 04 11:33:42.923 INFO kablam!   --> src/fast_fourier.rs:45:6
Nov 04 11:33:42.923 INFO kablam!    |
Nov 04 11:33:42.923 INFO kablam! 45 |     use test::Bencher;
Nov 04 11:33:42.923 INFO kablam!    |         ^^^^
Nov 04 11:33:42.923 INFO kablam!    |
Nov 04 11:33:42.923 INFO kablam!    = help: add #![feature(extern_crate_item_prelude)] to the crate attributes to enable
Nov 04 11:33:42.923 INFO kablam! 
Nov 04 11:33:43.976 INFO kablam! error: aborting due to 4 previous errors
Nov 04 11:33:43.976 INFO kablam! 
Nov 04 11:33:43.976 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Nov 04 11:33:44.011 INFO kablam! error: Could not compile `signal_processing`.
Nov 04 11:33:44.011 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 04 11:33:45.186 INFO kablam! error: build failed
Nov 04 11:33:45.190 INFO kablam! su: No module specific data is present
Nov 04 11:33:46.195 INFO running `"docker" "rm" "-f" "4fbf725a086186f7bd6527ed3e0f6065e1b1da7fed3a176d3202af4a9cff0878"`
Nov 04 11:33:46.467 INFO blam! 4fbf725a086186f7bd6527ed3e0f6065e1b1da7fed3a176d3202af4a9cff0878