Dec 01 19:36:48.771 INFO testing derekjw/hearts against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 01 19:36:48.771 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 01 19:36:49.260 INFO [stdout] 56a82b744dbc93f219df3b736c125fac9580790d3ce3c8efa97e55a32cda7e9f
Dec 01 19:36:49.262 INFO running `"docker" "start" "-a" "56a82b744dbc93f219df3b736c125fac9580790d3ce3c8efa97e55a32cda7e9f"`
Dec 01 19:36:51.945 INFO [stderr] usermod: no changes
Dec 01 19:36:52.266 INFO [stderr]    Compiling hearts v0.0.1 (/source)
Dec 01 19:36:54.827 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 01 19:36:54.827 INFO [stderr]  --> src/main.rs:1:1
Dec 01 19:36:54.827 INFO [stderr]   |
Dec 01 19:36:54.827 INFO [stderr] 1 | #![feature(custom_derive, plugin)]
Dec 01 19:36:54.827 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 19:36:54.827 INFO [stderr] 
Dec 01 19:36:54.827 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 01 19:36:54.827 INFO [stderr]  --> src/main.rs:2:1
Dec 01 19:36:54.827 INFO [stderr]   |
Dec 01 19:36:54.827 INFO [stderr] 2 | #![feature(proc_macro)]
Dec 01 19:36:54.827 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 19:36:54.827 INFO [stderr] 
Dec 01 19:36:54.827 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 01 19:36:54.827 INFO [stderr]  --> src/main.rs:3:1
Dec 01 19:36:54.827 INFO [stderr]   |
Dec 01 19:36:54.827 INFO [stderr] 3 | #![feature(try_from)]
Dec 01 19:36:54.827 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 01 19:36:54.827 INFO [stderr] 
Dec 01 19:36:54.835 INFO [stderr] error: aborting due to 3 previous errors
Dec 01 19:36:54.835 INFO [stderr] 
Dec 01 19:36:54.835 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 01 19:36:54.855 INFO [stderr] error: Could not compile `hearts`.
Dec 01 19:36:54.855 INFO [stderr] 
Dec 01 19:36:54.855 INFO [stderr] To learn more, run the command again with --verbose.
Dec 01 19:36:54.859 INFO [stderr] su: No module specific data is present
Dec 01 19:36:56.251 INFO running `"docker" "inspect" "56a82b744dbc93f219df3b736c125fac9580790d3ce3c8efa97e55a32cda7e9f"`
Dec 01 19:36:56.612 INFO running `"docker" "rm" "-f" "56a82b744dbc93f219df3b736c125fac9580790d3ce3c8efa97e55a32cda7e9f"`
Dec 01 19:36:57.020 INFO [stdout] 56a82b744dbc93f219df3b736c125fac9580790d3ce3c8efa97e55a32cda7e9f
