Dec 02 14:53:31.831 INFO testing sync-threadpool-0.0.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 14:53:31.831 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 14:53:32.267 INFO [stdout] 25a6cb1593bc214ad36e7700181e4c7dadc188e5cbded9d27d5c98d048b3711b
Dec 02 14:53:32.267 INFO running `"docker" "start" "-a" "25a6cb1593bc214ad36e7700181e4c7dadc188e5cbded9d27d5c98d048b3711b"`
Dec 02 14:53:33.131 INFO [stderr] usermod: no changes
Dec 02 14:53:33.204 INFO [stderr]    Compiling sync-threadpool v0.0.2 (/source)
Dec 02 14:53:33.751 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:53:33.751 INFO [stderr]   --> src/lib.rs:62:1
Dec 02 14:53:33.751 INFO [stderr]    |
Dec 02 14:53:33.751 INFO [stderr] 62 | #![feature(fnbox)]
Dec 02 14:53:33.751 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 02 14:53:33.751 INFO [stderr] 
Dec 02 14:53:33.751 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 14:53:33.751 INFO [stderr]   --> src/lib.rs:63:1
Dec 02 14:53:33.751 INFO [stderr]    |
Dec 02 14:53:33.751 INFO [stderr] 63 | #![feature(box_syntax)]
Dec 02 14:53:33.751 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:53:33.751 INFO [stderr] 
Dec 02 14:53:33.763 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 14:53:33.763 INFO [stderr] 
Dec 02 14:53:33.763 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 14:53:33.763 INFO [stderr] error: Could not compile `sync-threadpool`.
Dec 02 14:53:33.763 INFO [stderr] 
Dec 02 14:53:33.763 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 14:53:33.767 INFO [stderr] su: No module specific data is present
Dec 02 14:53:34.287 INFO running `"docker" "inspect" "25a6cb1593bc214ad36e7700181e4c7dadc188e5cbded9d27d5c98d048b3711b"`
Dec 02 14:53:34.554 INFO running `"docker" "rm" "-f" "25a6cb1593bc214ad36e7700181e4c7dadc188e5cbded9d27d5c98d048b3711b"`
Dec 02 14:53:34.835 INFO [stdout] 25a6cb1593bc214ad36e7700181e4c7dadc188e5cbded9d27d5c98d048b3711b