Dec 02 19:22:49.620 INFO testing ruma-events-0.10.0 against 1.30.1 for beta-1.31-5
Dec 02 19:22:49.620 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 02 19:22:50.020 INFO [stdout] 2cbf6eca9448be9e6c03481e8785ce34cf3e2e12b05bf9e2fb694b00e22d563c
Dec 02 19:22:50.023 INFO running `"docker" "start" "-a" "2cbf6eca9448be9e6c03481e8785ce34cf3e2e12b05bf9e2fb694b00e22d563c"`
Dec 02 19:22:51.006 INFO [stderr] usermod: no changes
Dec 02 19:22:51.206 INFO [stderr]    Compiling regex v0.2.11
Dec 02 19:22:51.207 INFO [stderr]    Compiling ring v0.9.7
Dec 02 19:23:00.663 INFO [stderr]    Compiling ruma-identifiers v0.11.0
Dec 02 19:23:03.058 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 19:23:03.058 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ruma-identifiers-0.11.0/src/lib.rs:4:1
Dec 02 19:23:03.058 INFO [stderr]   |
Dec 02 19:23:03.058 INFO [stderr] 4 | #![feature(try_from)]
Dec 02 19:23:03.058 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 02 19:23:03.058 INFO [stderr] 
Dec 02 19:23:03.060 INFO [stderr] error: aborting due to previous error
Dec 02 19:23:03.060 INFO [stderr] 
Dec 02 19:23:03.060 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 19:23:03.062 INFO [stderr]    Compiling ruma-signatures v0.4.0
Dec 02 19:23:03.067 INFO [stderr] error: Could not compile `ruma-identifiers`.
Dec 02 19:23:03.067 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 19:23:05.376 INFO [stderr] error: build failed
Dec 02 19:23:05.376 INFO [stderr] su: No module specific data is present
Dec 02 19:23:05.959 INFO running `"docker" "inspect" "2cbf6eca9448be9e6c03481e8785ce34cf3e2e12b05bf9e2fb694b00e22d563c"`
Dec 02 19:23:06.185 INFO running `"docker" "rm" "-f" "2cbf6eca9448be9e6c03481e8785ce34cf3e2e12b05bf9e2fb694b00e22d563c"`
Dec 02 19:23:06.494 INFO [stdout] 2cbf6eca9448be9e6c03481e8785ce34cf3e2e12b05bf9e2fb694b00e22d563c