Dec 03 16:36:23.164 INFO testing cell-0.1.2 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 16:36:23.165 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 03 16:36:23.621 INFO [stdout] ade438d5117b92178bac7fd147860ef68988bcfcf273c6fb471c6ded2e94da4b
Dec 03 16:36:23.624 INFO running `"docker" "start" "-a" "ade438d5117b92178bac7fd147860ef68988bcfcf273c6fb471c6ded2e94da4b"`
Dec 03 16:36:24.595 INFO [stderr] usermod: no changes
Dec 03 16:36:24.667 INFO [stderr]    Compiling cell v0.1.2 (/source)
Dec 03 16:36:25.331 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 16:36:25.331 INFO [stderr]   --> src/lib.rs:12:1
Dec 03 16:36:25.331 INFO [stderr]    |
Dec 03 16:36:25.331 INFO [stderr] 12 | #![feature(optin_builtin_traits)]
Dec 03 16:36:25.331 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 16:36:25.331 INFO [stderr] 
Dec 03 16:36:25.333 INFO [stderr] error: aborting due to previous error
Dec 03 16:36:25.335 INFO [stderr] 
Dec 03 16:36:25.335 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 16:36:25.340 INFO [stderr] error: Could not compile `cell`.
Dec 03 16:36:25.340 INFO [stderr] 
Dec 03 16:36:25.340 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 16:36:25.340 INFO [stderr] su: No module specific data is present
Dec 03 16:36:25.863 INFO running `"docker" "inspect" "ade438d5117b92178bac7fd147860ef68988bcfcf273c6fb471c6ded2e94da4b"`
Dec 03 16:36:26.145 INFO running `"docker" "rm" "-f" "ade438d5117b92178bac7fd147860ef68988bcfcf273c6fb471c6ded2e94da4b"`
Dec 03 16:36:26.409 INFO [stdout] ade438d5117b92178bac7fd147860ef68988bcfcf273c6fb471c6ded2e94da4b