Dec 02 12:42:21.906 INFO testing two_three-0.0.6 against 1.30.1 for beta-1.31-5
Dec 02 12:42:21.906 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 02 12:42:22.139 INFO [stdout] 203a5d0847ec19d6fb5885a96f1f1907cdea4e1a00c79fcae8eebf4ec1a28f37
Dec 02 12:42:22.145 INFO running `"docker" "start" "-a" "203a5d0847ec19d6fb5885a96f1f1907cdea4e1a00c79fcae8eebf4ec1a28f37"`
Dec 02 12:42:22.668 INFO [stderr] usermod: no changes
Dec 02 12:42:22.694 INFO [stderr]    Compiling two_three v0.0.6 (/source)
Dec 02 12:42:23.173 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
Dec 02 12:42:23.173 INFO [stderr] su: No module specific data is present
Dec 02 12:42:23.496 INFO running `"docker" "inspect" "203a5d0847ec19d6fb5885a96f1f1907cdea4e1a00c79fcae8eebf4ec1a28f37"`
Dec 02 12:42:23.582 INFO running `"docker" "rm" "-f" "203a5d0847ec19d6fb5885a96f1f1907cdea4e1a00c79fcae8eebf4ec1a28f37"`
Dec 02 12:42:23.696 INFO [stdout] 203a5d0847ec19d6fb5885a96f1f1907cdea4e1a00c79fcae8eebf4ec1a28f37
Dec 02 12:42:23.699 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 test --frozen --no-run" "-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 12:42:23.956 INFO [stdout] 9faf5a3b230f7496c165399230658acc7c54d85c1d3777dc1bbc8d83e1fed154
Dec 02 12:42:23.960 INFO running `"docker" "start" "-a" "9faf5a3b230f7496c165399230658acc7c54d85c1d3777dc1bbc8d83e1fed154"`
Dec 02 12:42:24.615 INFO [stderr] usermod: no changes
Dec 02 12:42:24.639 INFO [stderr]    Compiling two_three v0.0.6 (/source)
Dec 02 12:42:25.292 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 12:42:25.292 INFO [stderr]  --> tests/test_tree.rs:1:1
Dec 02 12:42:25.292 INFO [stderr]   |
Dec 02 12:42:25.292 INFO [stderr] 1 | #![feature(box_patterns)]
Dec 02 12:42:25.292 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 12:42:25.292 INFO [stderr] 
Dec 02 12:42:25.292 INFO [stderr] error: aborting due to previous error
Dec 02 12:42:25.292 INFO [stderr] 
Dec 02 12:42:25.292 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 12:42:25.292 INFO [stderr] error: Could not compile `two_three`.
Dec 02 12:42:25.292 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 12:42:25.628 INFO [stderr] error: build failed
Dec 02 12:42:25.629 INFO [stderr] su: No module specific data is present
Dec 02 12:42:25.856 INFO running `"docker" "inspect" "9faf5a3b230f7496c165399230658acc7c54d85c1d3777dc1bbc8d83e1fed154"`
Dec 02 12:42:25.982 INFO running `"docker" "rm" "-f" "9faf5a3b230f7496c165399230658acc7c54d85c1d3777dc1bbc8d83e1fed154"`
Dec 02 12:42:26.111 INFO [stdout] 9faf5a3b230f7496c165399230658acc7c54d85c1d3777dc1bbc8d83e1fed154