Dec 02 15:52:00.787 INFO testing spherical-cow-0.1.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 15:52:00.788 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 15:52:01.295 INFO [stdout] 698280ef244cc620fbfcc2bedf39a4ded8035a5b5ebbbcf8be9e0f29578bfb89
Dec 02 15:52:01.301 INFO running `"docker" "start" "-a" "698280ef244cc620fbfcc2bedf39a4ded8035a5b5ebbbcf8be9e0f29578bfb89"`
Dec 02 15:52:02.699 INFO [stderr] usermod: no changes
Dec 02 15:52:02.959 INFO [stderr]    Compiling float-cmp v0.4.0
Dec 02 15:52:02.959 INFO [stderr]    Compiling alga v0.7.2
Dec 02 15:52:07.838 INFO [stderr]    Compiling nalgebra v0.16.11
Dec 02 15:52:42.101 INFO [stderr]    Compiling spherical-cow v0.1.2 (/source)
Dec 02 15:52:43.049 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 15:52:43.049 INFO [stderr]   --> src/lib.rs:58:1
Dec 02 15:52:43.049 INFO [stderr]    |
Dec 02 15:52:43.049 INFO [stderr] 58 | #![feature(vec_remove_item)]
Dec 02 15:52:43.049 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 15:52:43.049 INFO [stderr] 
Dec 02 15:52:43.050 INFO [stderr] error: aborting due to previous error
Dec 02 15:52:43.050 INFO [stderr] 
Dec 02 15:52:43.050 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 15:52:43.066 INFO [stderr] error: Could not compile `spherical-cow`.
Dec 02 15:52:43.066 INFO [stderr] 
Dec 02 15:52:43.066 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 15:52:43.068 INFO [stderr] su: No module specific data is present
Dec 02 15:52:43.324 INFO running `"docker" "inspect" "698280ef244cc620fbfcc2bedf39a4ded8035a5b5ebbbcf8be9e0f29578bfb89"`
Dec 02 15:52:43.404 INFO running `"docker" "rm" "-f" "698280ef244cc620fbfcc2bedf39a4ded8035a5b5ebbbcf8be9e0f29578bfb89"`
Dec 02 15:52:43.515 INFO [stdout] 698280ef244cc620fbfcc2bedf39a4ded8035a5b5ebbbcf8be9e0f29578bfb89