Dec 02 20:16:46.402 INFO testing riker-default-0.1.8 against 1.30.1 for beta-1.31-5
Dec 02 20:16:46.402 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 20:16:46.715 INFO [stdout] 278ab0ce6b69c2d0f5a69534a1a92443a3d56757ec50357a4675391754bb871b
Dec 02 20:16:46.719 INFO running `"docker" "start" "-a" "278ab0ce6b69c2d0f5a69534a1a92443a3d56757ec50357a4675391754bb871b"`
Dec 02 20:16:47.952 INFO [stderr] usermod: no changes
Dec 02 20:16:48.101 INFO [stderr]    Compiling futures v0.1.25
Dec 02 20:16:48.123 INFO [stderr]    Compiling runtime-fmt v0.3.0
Dec 02 20:16:48.159 INFO [stderr]    Compiling riker v0.1.8
Dec 02 20:16:49.743 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:49.743 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:17:1
Dec 02 20:16:49.743 INFO [stderr]    |
Dec 02 20:16:49.743 INFO [stderr] 17 | #![feature(fmt_internals)]
Dec 02 20:16:49.744 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:49.744 INFO [stderr] 
Dec 02 20:16:49.744 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:49.744 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:18:1
Dec 02 20:16:49.745 INFO [stderr]    |
Dec 02 20:16:49.745 INFO [stderr] 18 | #![feature(conservative_impl_trait)]
Dec 02 20:16:49.745 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:49.745 INFO [stderr] 
Dec 02 20:16:49.745 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:49.746 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:19:1
Dec 02 20:16:49.746 INFO [stderr]    |
Dec 02 20:16:49.746 INFO [stderr] 19 | #![feature(specialization)]
Dec 02 20:16:49.746 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:49.747 INFO [stderr] 
Dec 02 20:16:49.747 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:49.747 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:20:1
Dec 02 20:16:49.747 INFO [stderr]    |
Dec 02 20:16:49.748 INFO [stderr] 20 | #![feature(print_internals)]
Dec 02 20:16:49.748 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:49.748 INFO [stderr] 
Dec 02 20:16:49.748 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:49.749 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:21:1
Dec 02 20:16:49.749 INFO [stderr]    |
Dec 02 20:16:49.749 INFO [stderr] 21 | #![feature(rustc_private)]
Dec 02 20:16:49.749 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:49.749 INFO [stderr] 
Dec 02 20:16:49.750 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:49.750 INFO [stderr]   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/runtime-fmt-0.3.0/src/lib.rs:22:1
Dec 02 20:16:49.750 INFO [stderr]    |
Dec 02 20:16:49.750 INFO [stderr] 22 | #![feature(try_from)]
Dec 02 20:16:49.751 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:49.751 INFO [stderr] 
Dec 02 20:16:49.754 INFO [stderr] error: aborting due to 6 previous errors
Dec 02 20:16:49.754 INFO [stderr] 
Dec 02 20:16:49.754 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 20:16:49.767 INFO [stderr] error: Could not compile `runtime-fmt`.
Dec 02 20:16:49.767 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 20:16:53.116 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 20:16:53.116 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/riker-0.1.8/src/lib.rs:2:1
Dec 02 20:16:53.117 INFO [stderr]   |
Dec 02 20:16:53.117 INFO [stderr] 2 | #![feature(assoc_unix_epoch)]
Dec 02 20:16:53.117 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 20:16:53.123 INFO [stderr] 
Dec 02 20:16:53.130 INFO [stderr] error: aborting due to previous error
Dec 02 20:16:53.130 INFO [stderr] 
Dec 02 20:16:53.130 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 20:16:53.140 INFO [stderr] error: Could not compile `riker`.
Dec 02 20:16:53.141 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 20:16:54.033 INFO [stderr] error: build failed
Dec 02 20:16:54.035 INFO [stderr] su: No module specific data is present
Dec 02 20:16:54.893 INFO running `"docker" "inspect" "278ab0ce6b69c2d0f5a69534a1a92443a3d56757ec50357a4675391754bb871b"`
Dec 02 20:16:55.268 INFO running `"docker" "rm" "-f" "278ab0ce6b69c2d0f5a69534a1a92443a3d56757ec50357a4675391754bb871b"`
Dec 02 20:16:55.579 INFO [stdout] 278ab0ce6b69c2d0f5a69534a1a92443a3d56757ec50357a4675391754bb871b