Dec 03 02:03:41.292 INFO testing mayer_multiple-0.0.1 against 1.30.1 for beta-1.31-5
Dec 03 02:03:41.293 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 02:03:41.576 INFO [stdout] c360d52aabb096c50732d540fb4947780e7cac8f4c8ebadcdaf75de1f20851a6
Dec 03 02:03:41.583 INFO running `"docker" "start" "-a" "c360d52aabb096c50732d540fb4947780e7cac8f4c8ebadcdaf75de1f20851a6"`
Dec 03 02:03:42.211 INFO [stderr] usermod: no changes
Dec 03 02:03:42.400 INFO [stderr]    Compiling serde v0.6.15
Dec 03 02:03:46.584 INFO [stderr]    Compiling mime v0.1.3
Dec 03 02:03:48.463 INFO [stderr]    Compiling hyper v0.7.2
Dec 03 02:03:59.073 INFO [stderr]    Compiling mayer_multiple v0.0.1 (/source)
Dec 03 02:04:02.663 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 02:04:02.663 INFO [stderr]  --> src/main.rs:1:1
Dec 03 02:04:02.663 INFO [stderr]   |
Dec 03 02:04:02.663 INFO [stderr] 1 | #![feature(rustc_private)]
Dec 03 02:04:02.663 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 02:04:02.663 INFO [stderr] 
Dec 03 02:04:02.663 INFO [stderr] error: aborting due to previous error
Dec 03 02:04:02.663 INFO [stderr] 
Dec 03 02:04:02.663 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 02:04:02.679 INFO [stderr] error: Could not compile `mayer_multiple`.
Dec 03 02:04:02.679 INFO [stderr] 
Dec 03 02:04:02.679 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 02:04:02.679 INFO [stderr] su: No module specific data is present
Dec 03 02:04:03.192 INFO running `"docker" "inspect" "c360d52aabb096c50732d540fb4947780e7cac8f4c8ebadcdaf75de1f20851a6"`
Dec 03 02:04:03.481 INFO running `"docker" "rm" "-f" "c360d52aabb096c50732d540fb4947780e7cac8f4c8ebadcdaf75de1f20851a6"`
Dec 03 02:04:03.695 INFO [stdout] c360d52aabb096c50732d540fb4947780e7cac8f4c8ebadcdaf75de1f20851a6