Dec 03 13:01:58.102 INFO testing encoding-0.2.33 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 03 13:01:58.102 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 13:01:58.524 INFO [stdout] 2f5fa52a6f9319dcde24e4f37b0e14c2ecb0a57815521680eb62cb0096575783
Dec 03 13:01:58.526 INFO running `"docker" "start" "-a" "2f5fa52a6f9319dcde24e4f37b0e14c2ecb0a57815521680eb62cb0096575783"`
Dec 03 13:01:59.731 INFO [stderr] usermod: no changes
Dec 03 13:01:59.815 INFO [stderr]    Compiling encoding v0.2.33 (/source)
Dec 03 13:02:02.332 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.58s
Dec 03 13:02:02.335 INFO [stderr] su: No module specific data is present
Dec 03 13:02:02.749 INFO running `"docker" "inspect" "2f5fa52a6f9319dcde24e4f37b0e14c2ecb0a57815521680eb62cb0096575783"`
Dec 03 13:02:02.889 INFO running `"docker" "rm" "-f" "2f5fa52a6f9319dcde24e4f37b0e14c2ecb0a57815521680eb62cb0096575783"`
Dec 03 13:02:03.072 INFO [stdout] 2f5fa52a6f9319dcde24e4f37b0e14c2ecb0a57815521680eb62cb0096575783
Dec 03 13:02:03.077 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 13:02:03.390 INFO [stdout] 64bee2aac965a53bb6265e0243673fe4544d00e1aa6d9bbc81abd1ec49822c8f
Dec 03 13:02:03.392 INFO running `"docker" "start" "-a" "64bee2aac965a53bb6265e0243673fe4544d00e1aa6d9bbc81abd1ec49822c8f"`
Dec 03 13:02:03.787 INFO [stderr] usermod: no changes
Dec 03 13:02:03.819 INFO [stderr]    Compiling encoding v0.2.33 (/source)
Dec 03 13:02:06.019 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 03 13:02:06.019 INFO [stderr]    --> src/lib.rs:207:19
Dec 03 13:02:06.019 INFO [stderr]     |
Dec 03 13:02:06.019 INFO [stderr] 207 | #![cfg_attr(test, feature(test))] // lib stability features as per RFC #507
Dec 03 13:02:06.019 INFO [stderr]     |                   ^^^^^^^^^^^^^
Dec 03 13:02:06.019 INFO [stderr] 
Dec 03 13:02:06.155 INFO [stderr] error: aborting due to previous error
Dec 03 13:02:06.155 INFO [stderr] 
Dec 03 13:02:06.155 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 13:02:06.164 INFO [stderr] error: Could not compile `encoding`.
Dec 03 13:02:06.164 INFO [stderr] 
Dec 03 13:02:06.164 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 13:02:06.165 INFO [stderr] su: No module specific data is present
Dec 03 13:02:06.696 INFO running `"docker" "inspect" "64bee2aac965a53bb6265e0243673fe4544d00e1aa6d9bbc81abd1ec49822c8f"`
Dec 03 13:02:06.989 INFO running `"docker" "rm" "-f" "64bee2aac965a53bb6265e0243673fe4544d00e1aa6d9bbc81abd1ec49822c8f"`
Dec 03 13:02:07.171 INFO [stdout] 64bee2aac965a53bb6265e0243673fe4544d00e1aa6d9bbc81abd1ec49822c8f