Dec 03 03:09:55.766 INFO testing libcodejam-0.2.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 03:09:55.766 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 03:09:56.254 INFO [stdout] eb060b7da20de2f3aa3c92c815c63e18dba6fc53b4c96406b2f64793f7b2c34a
Dec 03 03:09:56.256 INFO running `"docker" "start" "-a" "eb060b7da20de2f3aa3c92c815c63e18dba6fc53b4c96406b2f64793f7b2c34a"`
Dec 03 03:09:57.264 INFO [stderr] usermod: no changes
Dec 03 03:09:57.442 INFO [stderr]    Compiling crossbeam v0.4.1
Dec 03 03:10:00.075 INFO [stderr]    Compiling libcodejam v0.2.0 (/source)
Dec 03 03:10:02.278 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 03:10:02.278 INFO [stderr]  --> src/lib.rs:1:1
Dec 03 03:10:02.278 INFO [stderr]   |
Dec 03 03:10:02.278 INFO [stderr] 1 | #![feature(try_trait)]
Dec 03 03:10:02.278 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 03 03:10:02.278 INFO [stderr] 
Dec 03 03:10:02.278 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 03:10:02.278 INFO [stderr]  --> src/lib.rs:2:1
Dec 03 03:10:02.278 INFO [stderr]   |
Dec 03 03:10:02.278 INFO [stderr] 2 | #![feature(trusted_len)]
Dec 03 03:10:02.278 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 03:10:02.278 INFO [stderr] 
Dec 03 03:10:02.278 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 03:10:02.278 INFO [stderr]  --> src/lib.rs:3:1
Dec 03 03:10:02.278 INFO [stderr]   |
Dec 03 03:10:02.278 INFO [stderr] 3 | #![feature(never_type)]
Dec 03 03:10:02.278 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 03:10:02.278 INFO [stderr] 
Dec 03 03:10:02.282 INFO [stderr] error: aborting due to 3 previous errors
Dec 03 03:10:02.282 INFO [stderr] 
Dec 03 03:10:02.282 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 03:10:02.295 INFO [stderr] error: Could not compile `libcodejam`.
Dec 03 03:10:02.295 INFO [stderr] 
Dec 03 03:10:02.295 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 03:10:02.298 INFO [stderr] su: No module specific data is present
Dec 03 03:10:02.839 INFO running `"docker" "inspect" "eb060b7da20de2f3aa3c92c815c63e18dba6fc53b4c96406b2f64793f7b2c34a"`
Dec 03 03:10:03.091 INFO running `"docker" "rm" "-f" "eb060b7da20de2f3aa3c92c815c63e18dba6fc53b4c96406b2f64793f7b2c34a"`
Dec 03 03:10:03.263 INFO [stdout] eb060b7da20de2f3aa3c92c815c63e18dba6fc53b4c96406b2f64793f7b2c34a