Nov 30 19:40:24.230 INFO testing yu-i9/mini_python against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Nov 30 19:40:24.231 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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"`
Nov 30 19:40:24.886 INFO [stdout] 51f7d6e805dfff49818e68c415d9b6cfbbc4bc02105ea3f5ecfe01d0e9bf36db
Nov 30 19:40:24.891 INFO running `"docker" "start" "-a" "51f7d6e805dfff49818e68c415d9b6cfbbc4bc02105ea3f5ecfe01d0e9bf36db"`
Nov 30 19:40:26.804 INFO [stderr] usermod: no changes
Nov 30 19:40:26.859 INFO [stderr]    Compiling mini_python v0.1.0 (/source)
Nov 30 19:40:27.271 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Nov 30 19:40:27.271 INFO [stderr]  --> src/core/mod.rs:1:1
Nov 30 19:40:27.271 INFO [stderr]   |
Nov 30 19:40:27.271 INFO [stderr] 1 | #![feature(arbitrary_self_types)]
Nov 30 19:40:27.271 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 19:40:27.271 INFO [stderr] 
Nov 30 19:40:27.271 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Nov 30 19:40:27.271 INFO [stderr]  --> src/core/mod.rs:2:1
Nov 30 19:40:27.271 INFO [stderr]   |
Nov 30 19:40:27.271 INFO [stderr] 2 | #![feature(iterator_find_map)]
Nov 30 19:40:27.271 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 19:40:27.271 INFO [stderr] 
Nov 30 19:40:27.271 INFO [stderr] error: aborting due to 2 previous errors
Nov 30 19:40:27.271 INFO [stderr] 
Nov 30 19:40:27.281 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Nov 30 19:40:27.283 INFO [stderr] error: Could not compile `mini_python`.
Nov 30 19:40:27.283 INFO [stderr] 
Nov 30 19:40:27.283 INFO [stderr] To learn more, run the command again with --verbose.
Nov 30 19:40:27.284 INFO [stderr] su: No module specific data is present
Nov 30 19:40:28.607 INFO running `"docker" "inspect" "51f7d6e805dfff49818e68c415d9b6cfbbc4bc02105ea3f5ecfe01d0e9bf36db"`
Nov 30 19:40:28.935 INFO running `"docker" "rm" "-f" "51f7d6e805dfff49818e68c415d9b6cfbbc4bc02105ea3f5ecfe01d0e9bf36db"`
Nov 30 19:40:29.247 INFO [stdout] 51f7d6e805dfff49818e68c415d9b6cfbbc4bc02105ea3f5ecfe01d0e9bf36db
