Dec 03 03:28:41.282 INFO testing lamport_signature-0.1.4 against 1.30.1 for beta-1.31-5
Dec 03 03:28:41.282 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-3/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 03:28:41.787 INFO [stdout] fc5968dec48f17ae36d2857ad15fb55e4dac71b211f7d1e94fe2657c987c3e22
Dec 03 03:28:41.795 INFO running `"docker" "start" "-a" "fc5968dec48f17ae36d2857ad15fb55e4dac71b211f7d1e94fe2657c987c3e22"`
Dec 03 03:28:42.735 INFO [stderr] usermod: no changes
Dec 03 03:28:42.827 INFO [stderr]    Compiling lamport_signature v0.1.4 (/source)
Dec 03 03:28:43.911 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 03:28:43.911 INFO [stderr]   --> src/lib.rs:21:1
Dec 03 03:28:43.911 INFO [stderr]    |
Dec 03 03:28:43.911 INFO [stderr] 21 | #![feature(test, iterator_flatten)]
Dec 03 03:28:43.911 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 03:28:43.911 INFO [stderr] 
Dec 03 03:28:43.919 INFO [stderr] error: aborting due to previous error
Dec 03 03:28:43.919 INFO [stderr] 
Dec 03 03:28:43.919 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 03:28:43.921 INFO [stderr] error: Could not compile `lamport_signature`.
Dec 03 03:28:43.921 INFO [stderr] 
Dec 03 03:28:43.921 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 03:28:43.921 INFO [stderr] su: No module specific data is present
Dec 03 03:28:44.350 INFO running `"docker" "inspect" "fc5968dec48f17ae36d2857ad15fb55e4dac71b211f7d1e94fe2657c987c3e22"`
Dec 03 03:28:44.511 INFO running `"docker" "rm" "-f" "fc5968dec48f17ae36d2857ad15fb55e4dac71b211f7d1e94fe2657c987c3e22"`
Dec 03 03:28:44.683 INFO [stdout] fc5968dec48f17ae36d2857ad15fb55e4dac71b211f7d1e94fe2657c987c3e22