Dec 02 09:47:14.439 INFO testing AberrantWolf/bugboy against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 09:47:14.439 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 02 09:47:14.935 INFO [stdout] f74d84399040dde7ea7639a29817e974b10ad3bf6104b35038a5ab57e1f04a57
Dec 02 09:47:14.937 INFO running `"docker" "start" "-a" "f74d84399040dde7ea7639a29817e974b10ad3bf6104b35038a5ab57e1f04a57"`
Dec 02 09:47:16.775 INFO [stderr] usermod: no changes
Dec 02 09:47:16.871 INFO [stderr]    Compiling num-bigint v0.1.43
Dec 02 09:47:20.507 INFO [stderr]    Compiling num-rational v0.1.42
Dec 02 09:47:22.991 INFO [stderr]    Compiling num v0.1.42
Dec 02 09:47:23.799 INFO [stderr]    Compiling bugboy v0.1.0 (/source)
Dec 02 09:47:25.338 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 09:47:25.338 INFO [stderr]  --> src/bugboy.rs:1:1
Dec 02 09:47:25.338 INFO [stderr]   |
Dec 02 09:47:25.338 INFO [stderr] 1 | #![feature(custom_attribute)]
Dec 02 09:47:25.338 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:47:25.338 INFO [stderr] 
Dec 02 09:47:25.338 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 09:47:25.338 INFO [stderr]  --> src/bugboy.rs:2:1
Dec 02 09:47:25.339 INFO [stderr]   |
Dec 02 09:47:25.339 INFO [stderr] 2 | #![feature(slice_patterns)]
Dec 02 09:47:25.339 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:47:25.339 INFO [stderr] 
Dec 02 09:47:25.354 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 09:47:25.354 INFO [stderr] 
Dec 02 09:47:25.354 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 09:47:25.364 INFO [stderr] error: Could not compile `bugboy`.
Dec 02 09:47:25.364 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 02 09:47:25.574 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 09:47:25.574 INFO [stderr]  --> src/traceboy.rs:1:1
Dec 02 09:47:25.574 INFO [stderr]   |
Dec 02 09:47:25.574 INFO [stderr] 1 | #![feature(custom_attribute)]
Dec 02 09:47:25.574 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:47:25.574 INFO [stderr] 
Dec 02 09:47:25.574 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 09:47:25.574 INFO [stderr]  --> src/traceboy.rs:2:1
Dec 02 09:47:25.574 INFO [stderr]   |
Dec 02 09:47:25.574 INFO [stderr] 2 | #![feature(slice_patterns)]
Dec 02 09:47:25.574 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 09:47:25.575 INFO [stderr] 
Dec 02 09:47:25.577 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 09:47:25.577 INFO [stderr] 
Dec 02 09:47:25.577 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 09:47:25.586 INFO [stderr] error: Could not compile `bugboy`.
Dec 02 09:47:25.586 INFO [stderr] 
Dec 02 09:47:25.586 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 09:47:25.588 INFO [stderr] su: No module specific data is present
Dec 02 09:47:26.419 INFO running `"docker" "inspect" "f74d84399040dde7ea7639a29817e974b10ad3bf6104b35038a5ab57e1f04a57"`
Dec 02 09:47:26.741 INFO running `"docker" "rm" "-f" "f74d84399040dde7ea7639a29817e974b10ad3bf6104b35038a5ab57e1f04a57"`
Dec 02 09:47:27.011 INFO [stdout] f74d84399040dde7ea7639a29817e974b10ad3bf6104b35038a5ab57e1f04a57