Dec 01 19:36:57.107 INFO testing derekjw/hearts against 1.30.1 for beta-1.31-5
Dec 01 19:36:57.107 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/beta-1.31-5/1.30.1:/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 +1.30.1 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 01 19:36:57.579 INFO [stdout] ddd1ed3464a4ab1a427253689cc749bf9f0630430716cee03debf2c068182ce2
Dec 01 19:36:57.581 INFO running `"docker" "start" "-a" "ddd1ed3464a4ab1a427253689cc749bf9f0630430716cee03debf2c068182ce2"`
Dec 01 19:37:00.128 INFO [stderr] usermod: no changes
Dec 01 19:37:00.330 INFO [stderr]    Compiling memchr v0.1.11
Dec 01 19:37:00.349 INFO [stderr]    Compiling thread-id v2.0.0
Dec 01 19:37:01.095 INFO [stderr]    Compiling thread_local v0.2.7
Dec 01 19:37:01.503 INFO [stderr]    Compiling aho-corasick v0.5.3
Dec 01 19:37:03.117 INFO [stderr]    Compiling regex v0.1.80
Dec 01 19:37:11.539 INFO [stderr]    Compiling env_logger v0.3.5
Dec 01 19:37:12.890 INFO [stderr]    Compiling hearts v0.0.1 (/source)
Dec 01 19:37:15.557 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 01 19:37:15.557 INFO [stderr]  --> src/main.rs:1:1
Dec 01 19:37:15.557 INFO [stderr]   |
Dec 01 19:37:15.557 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 01 19:37:15.557 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 19:37:15.557 INFO [stderr] 
Dec 01 19:37:15.557 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 01 19:37:15.557 INFO [stderr]  --> src/main.rs:2:1
Dec 01 19:37:15.557 INFO [stderr]   |
Dec 01 19:37:15.557 INFO [stderr] 2 | #![feature(proc_macro)]
Dec 01 19:37:15.557 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 19:37:15.557 INFO [stderr] 
Dec 01 19:37:15.557 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 01 19:37:15.557 INFO [stderr]  --> src/main.rs:3:1
Dec 01 19:37:15.557 INFO [stderr]   |
Dec 01 19:37:15.557 INFO [stderr] 3 | #![feature(try_from)]
Dec 01 19:37:15.557 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 01 19:37:15.557 INFO [stderr] 
Dec 01 19:37:15.563 INFO [stderr] error: aborting due to 3 previous errors
Dec 01 19:37:15.563 INFO [stderr] 
Dec 01 19:37:15.563 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 01 19:37:15.572 INFO [stderr] error: Could not compile `hearts`.
Dec 01 19:37:15.572 INFO [stderr] 
Dec 01 19:37:15.572 INFO [stderr] To learn more, run the command again with --verbose.
Dec 01 19:37:15.577 INFO [stderr] su: No module specific data is present
Dec 01 19:37:16.495 INFO running `"docker" "inspect" "ddd1ed3464a4ab1a427253689cc749bf9f0630430716cee03debf2c068182ce2"`
Dec 01 19:37:16.716 INFO running `"docker" "rm" "-f" "ddd1ed3464a4ab1a427253689cc749bf9f0630430716cee03debf2c068182ce2"`
Dec 01 19:37:17.026 INFO [stdout] ddd1ed3464a4ab1a427253689cc749bf9f0630430716cee03debf2c068182ce2
