Dec 03 13:01:47.735 INFO testing encoding-index-singlebyte-1.20141219.5 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 13:01:47.736 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 13:01:47.992 INFO [stdout] 5d223397940930a35c2cb3db8f027a7df315dbef0f45a4d4e493edb94a73c301
Dec 03 13:01:47.996 INFO running `"docker" "start" "-a" "5d223397940930a35c2cb3db8f027a7df315dbef0f45a4d4e493edb94a73c301"`
Dec 03 13:01:49.051 INFO [stderr] usermod: no changes
Dec 03 13:01:49.101 INFO [stderr]    Compiling encoding-index-singlebyte v1.20141219.5 (/source)
Dec 03 13:01:50.163 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
Dec 03 13:01:50.175 INFO [stderr] su: No module specific data is present
Dec 03 13:01:51.009 INFO running `"docker" "inspect" "5d223397940930a35c2cb3db8f027a7df315dbef0f45a4d4e493edb94a73c301"`
Dec 03 13:01:51.367 INFO running `"docker" "rm" "-f" "5d223397940930a35c2cb3db8f027a7df315dbef0f45a4d4e493edb94a73c301"`
Dec 03 13:01:51.636 INFO [stdout] 5d223397940930a35c2cb3db8f027a7df315dbef0f45a4d4e493edb94a73c301
Dec 03 13:01:51.643 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-6/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 03 13:01:52.083 INFO [stdout] 04fc8451ac43bfa42ba8dbbd4f6f6795e875c657a94712bf32d0bb1e8c36421a
Dec 03 13:01:52.085 INFO running `"docker" "start" "-a" "04fc8451ac43bfa42ba8dbbd4f6f6795e875c657a94712bf32d0bb1e8c36421a"`
Dec 03 13:01:53.263 INFO [stderr] usermod: no changes
Dec 03 13:01:53.326 INFO [stderr]    Compiling encoding-index-singlebyte v1.20141219.5 (/source)
Dec 03 13:01:54.151 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 13:01:54.151 INFO [stderr]  --> lib.rs:9:19
Dec 03 13:01:54.151 INFO [stderr]   |
Dec 03 13:01:54.151 INFO [stderr] 9 | #![cfg_attr(test, feature(test))]
Dec 03 13:01:54.151 INFO [stderr]   |                   ^^^^^^^^^^^^^
Dec 03 13:01:54.151 INFO [stderr] 
Dec 03 13:01:54.159 INFO [stderr] error: aborting due to previous error
Dec 03 13:01:54.159 INFO [stderr] 
Dec 03 13:01:54.159 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 13:01:54.167 INFO [stderr] error: Could not compile `encoding-index-singlebyte`.
Dec 03 13:01:54.167 INFO [stderr] 
Dec 03 13:01:54.167 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 13:01:54.167 INFO [stderr] su: No module specific data is present
Dec 03 13:01:54.591 INFO running `"docker" "inspect" "04fc8451ac43bfa42ba8dbbd4f6f6795e875c657a94712bf32d0bb1e8c36421a"`
Dec 03 13:01:54.831 INFO running `"docker" "rm" "-f" "04fc8451ac43bfa42ba8dbbd4f6f6795e875c657a94712bf32d0bb1e8c36421a"`
Dec 03 13:01:54.999 INFO [stdout] 04fc8451ac43bfa42ba8dbbd4f6f6795e875c657a94712bf32d0bb1e8c36421a