Dec 02 23:16:44.800 INFO testing pandora-0.1.1 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 23:16:44.800 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 02 23:16:45.292 INFO [stdout] a57f8fd3b22c86e6243c8df138dd79341cfa517696e0aee7e1905ef525cc39db
Dec 02 23:16:45.295 INFO running `"docker" "start" "-a" "a57f8fd3b22c86e6243c8df138dd79341cfa517696e0aee7e1905ef525cc39db"`
Dec 02 23:16:47.003 INFO [stderr] usermod: no changes
Dec 02 23:16:47.059 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 02 23:16:47.295 INFO [stderr]    Compiling syn v0.10.8
Dec 02 23:16:51.753 INFO [stderr]    Compiling serde_codegen_internals v0.11.3
Dec 02 23:16:53.373 INFO [stderr]    Compiling serde_codegen v0.8.23
Dec 02 23:16:57.707 INFO [stderr]    Compiling serde_derive v0.8.23
Dec 02 23:17:01.719 INFO [stderr]    Compiling pandora v0.1.1 (/source)
Dec 02 23:17:04.871 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 23:17:04.871 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 23:17:04.871 INFO [stderr]   |
Dec 02 23:17:04.871 INFO [stderr] 1 | #![feature(proc_macro)]
Dec 02 23:17:04.871 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 23:17:04.871 INFO [stderr] 
Dec 02 23:17:04.874 INFO [stderr] error: aborting due to previous error
Dec 02 23:17:04.874 INFO [stderr] 
Dec 02 23:17:04.874 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 23:17:04.887 INFO [stderr] error: Could not compile `pandora`.
Dec 02 23:17:04.887 INFO [stderr] 
Dec 02 23:17:04.887 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 23:17:04.890 INFO [stderr] su: No module specific data is present
Dec 02 23:17:05.216 INFO running `"docker" "inspect" "a57f8fd3b22c86e6243c8df138dd79341cfa517696e0aee7e1905ef525cc39db"`
Dec 02 23:17:05.472 INFO running `"docker" "rm" "-f" "a57f8fd3b22c86e6243c8df138dd79341cfa517696e0aee7e1905ef525cc39db"`
Dec 02 23:17:05.751 INFO [stdout] a57f8fd3b22c86e6243c8df138dd79341cfa517696e0aee7e1905ef525cc39db