Dec 02 12:23:18.988 INFO testing unrest-0.1.0 against 1.30.1 for beta-1.31-5
Dec 02 12:23:18.988 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 12:23:19.175 INFO [stdout] 669715142e07cdae1981d2f81239338b47e57782feaa108697606cc1f1fbadcd
Dec 02 12:23:19.187 INFO running `"docker" "start" "-a" "669715142e07cdae1981d2f81239338b47e57782feaa108697606cc1f1fbadcd"`
Dec 02 12:23:19.769 INFO [stderr] usermod: no changes
Dec 02 12:23:19.938 INFO [stderr]    Compiling tokio-proto v0.1.1
Dec 02 12:23:25.918 INFO [stderr]    Compiling hyper v0.11.27
Dec 02 12:23:37.441 INFO [stderr]    Compiling unrest v0.1.0 (/source)
Dec 02 12:23:41.852 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 12:23:41.852 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 12:23:41.852 INFO [stderr]   |
Dec 02 12:23:41.852 INFO [stderr] 1 | #![feature(conservative_impl_trait)]
Dec 02 12:23:41.852 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 12:23:41.852 INFO [stderr] 
Dec 02 12:23:41.852 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 12:23:41.852 INFO [stderr]  --> src/lib.rs:2:1
Dec 02 12:23:41.852 INFO [stderr]   |
Dec 02 12:23:41.852 INFO [stderr] 2 | #![feature(proc_macro)]
Dec 02 12:23:41.852 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 12:23:41.852 INFO [stderr] 
Dec 02 12:23:41.852 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 12:23:41.852 INFO [stderr] 
Dec 02 12:23:41.852 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 12:23:41.868 INFO [stderr] error: Could not compile `unrest`.
Dec 02 12:23:41.868 INFO [stderr] 
Dec 02 12:23:41.868 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 12:23:41.868 INFO [stderr] su: No module specific data is present
Dec 02 12:23:42.281 INFO running `"docker" "inspect" "669715142e07cdae1981d2f81239338b47e57782feaa108697606cc1f1fbadcd"`
Dec 02 12:23:42.439 INFO running `"docker" "rm" "-f" "669715142e07cdae1981d2f81239338b47e57782feaa108697606cc1f1fbadcd"`
Dec 02 12:23:42.609 INFO [stdout] 669715142e07cdae1981d2f81239338b47e57782feaa108697606cc1f1fbadcd