Dec 03 14:15:13.976 INFO testing devise_core-0.1.0 against 1.30.1 for beta-1.31-5
Dec 03 14:15:13.976 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 03 14:15:14.491 INFO [stdout] 879b08971693351ad6422301d14f855c04ce0718ac995e988a1b5939ea418a6c
Dec 03 14:15:14.493 INFO running `"docker" "start" "-a" "879b08971693351ad6422301d14f855c04ce0718ac995e988a1b5939ea418a6c"`
Dec 03 14:15:16.810 INFO [stderr] usermod: no changes
Dec 03 14:15:16.909 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 03 14:15:23.563 INFO [stderr]    Compiling quote v0.6.10
Dec 03 14:15:28.298 INFO [stderr]    Compiling syn v0.15.22
Dec 03 14:15:49.119 INFO [stderr]    Compiling devise_core v0.1.0 (/source)
Dec 03 14:15:53.091 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 14:15:53.091 INFO [stderr]  --> src/lib.rs:1:1
Dec 03 14:15:53.091 INFO [stderr]   |
Dec 03 14:15:53.091 INFO [stderr] 1 | #![feature(proc_macro_diagnostic, proc_macro_span)]
Dec 03 14:15:53.091 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 14:15:53.091 INFO [stderr] 
Dec 03 14:15:53.091 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 14:15:53.091 INFO [stderr]  --> src/lib.rs:2:1
Dec 03 14:15:53.091 INFO [stderr]   |
Dec 03 14:15:53.091 INFO [stderr] 2 | #![feature(crate_visibility_modifier)]
Dec 03 14:15:53.091 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 14:15:53.091 INFO [stderr] 
Dec 03 14:15:53.091 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 14:15:53.091 INFO [stderr]  --> src/lib.rs:3:1
Dec 03 14:15:53.091 INFO [stderr]   |
Dec 03 14:15:53.091 INFO [stderr] 3 | #![feature(concat_idents)]
Dec 03 14:15:53.091 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 14:15:53.091 INFO [stderr] 
Dec 03 14:15:53.091 INFO [stderr] error: aborting due to 3 previous errors
Dec 03 14:15:53.091 INFO [stderr] 
Dec 03 14:15:53.091 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 14:15:53.095 INFO [stderr] error: Could not compile `devise_core`.
Dec 03 14:15:53.095 INFO [stderr] 
Dec 03 14:15:53.095 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 14:15:53.095 INFO [stderr] su: No module specific data is present
Dec 03 14:15:53.895 INFO running `"docker" "inspect" "879b08971693351ad6422301d14f855c04ce0718ac995e988a1b5939ea418a6c"`
Dec 03 14:15:53.992 INFO running `"docker" "rm" "-f" "879b08971693351ad6422301d14f855c04ce0718ac995e988a1b5939ea418a6c"`
Dec 03 14:15:54.087 INFO [stdout] 879b08971693351ad6422301d14f855c04ce0718ac995e988a1b5939ea418a6c