Dec 02 19:22:46.620 INFO testing ruma-identifiers-0.11.0 against 1.30.1 for beta-1.31-5
Dec 02 19:22:46.620 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 19:22:46.761 INFO [stdout] 0e569df2a54e8670ec4ce061f2cf5f8fc52935fbd25b3324cf5b5c590eedb26d
Dec 02 19:22:46.765 INFO running `"docker" "start" "-a" "0e569df2a54e8670ec4ce061f2cf5f8fc52935fbd25b3324cf5b5c590eedb26d"`
Dec 02 19:22:47.303 INFO [stderr] usermod: no changes
Dec 02 19:22:47.389 INFO [stderr]    Compiling ruma-identifiers v0.11.0 (/source)
Dec 02 19:22:48.806 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 19:22:48.806 INFO [stderr]  --> src/lib.rs:4:1
Dec 02 19:22:48.806 INFO [stderr]   |
Dec 02 19:22:48.806 INFO [stderr] 4 | #![feature(try_from)]
Dec 02 19:22:48.806 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 02 19:22:48.806 INFO [stderr] 
Dec 02 19:22:48.817 INFO [stderr] error: aborting due to previous error
Dec 02 19:22:48.817 INFO [stderr] 
Dec 02 19:22:48.817 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 19:22:48.823 INFO [stderr] error: Could not compile `ruma-identifiers`.
Dec 02 19:22:48.823 INFO [stderr] 
Dec 02 19:22:48.823 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 19:22:48.823 INFO [stderr] su: No module specific data is present
Dec 02 19:22:49.151 INFO running `"docker" "inspect" "0e569df2a54e8670ec4ce061f2cf5f8fc52935fbd25b3324cf5b5c590eedb26d"`
Dec 02 19:22:49.322 INFO running `"docker" "rm" "-f" "0e569df2a54e8670ec4ce061f2cf5f8fc52935fbd25b3324cf5b5c590eedb26d"`
Dec 02 19:22:49.547 INFO [stdout] 0e569df2a54e8670ec4ce061f2cf5f8fc52935fbd25b3324cf5b5c590eedb26d