Dec 02 11:17:54.792 INFO testing wchar-0.2.0 against 1.30.1 for beta-1.31-5
Dec 02 11:17:54.792 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 02 11:17:55.043 INFO [stdout] 44568dc1bb07343d3e7fd797516318c6388f5fd2378fa313cb09cce1a914fd87
Dec 02 11:17:55.050 INFO running `"docker" "start" "-a" "44568dc1bb07343d3e7fd797516318c6388f5fd2378fa313cb09cce1a914fd87"`
Dec 02 11:17:56.150 INFO [stderr] usermod: no changes
Dec 02 11:17:56.219 INFO [stderr]    Compiling proc-macro2 v0.4.24
Dec 02 11:18:02.855 INFO [stderr]    Compiling syn v0.14.9
Dec 02 11:18:12.539 INFO [stderr]    Compiling wchar v0.2.0 (/source)
Dec 02 11:18:15.751 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 11:18:15.751 INFO [stderr]   --> src/lib.rs:30:1
Dec 02 11:18:15.751 INFO [stderr]    |
Dec 02 11:18:15.751 INFO [stderr] 30 | #![feature(proc_macro)]
Dec 02 11:18:15.751 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 11:18:15.751 INFO [stderr] 
Dec 02 11:18:15.751 INFO [stderr] error: aborting due to previous error
Dec 02 11:18:15.751 INFO [stderr] 
Dec 02 11:18:15.751 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 11:18:15.751 INFO [stderr] error: Could not compile `wchar`.
Dec 02 11:18:15.751 INFO [stderr] 
Dec 02 11:18:15.751 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 11:18:15.757 INFO [stderr] su: No module specific data is present
Dec 02 11:18:16.569 INFO running `"docker" "inspect" "44568dc1bb07343d3e7fd797516318c6388f5fd2378fa313cb09cce1a914fd87"`
Dec 02 11:18:16.835 INFO running `"docker" "rm" "-f" "44568dc1bb07343d3e7fd797516318c6388f5fd2378fa313cb09cce1a914fd87"`
Dec 02 11:18:17.093 INFO [stdout] 44568dc1bb07343d3e7fd797516318c6388f5fd2378fa313cb09cce1a914fd87