Dec 02 10:46:51.955 INFO testing x11-input-mirror-0.3.5 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 10:46:51.955 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 10:46:52.190 INFO [stdout] 27f379a61a2907792dabae131cb97f10c9420fba4e033b3d2b143a8f52f8a0cf
Dec 02 10:46:52.192 INFO running `"docker" "start" "-a" "27f379a61a2907792dabae131cb97f10c9420fba4e033b3d2b143a8f52f8a0cf"`
Dec 02 10:46:52.878 INFO [stderr] usermod: no changes
Dec 02 10:46:53.017 INFO [stderr]    Compiling keystream v1.0.0
Dec 02 10:46:53.031 INFO [stderr]    Compiling sha3 v0.7.3
Dec 02 10:46:53.322 INFO [stderr]    Compiling chacha v0.1.0
Dec 02 10:46:54.603 INFO [stderr]    Compiling x11-input-mirror v0.3.5 (/source)
Dec 02 10:46:55.863 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 10:46:55.863 INFO [stderr]  --> src/lib.rs:1:1
Dec 02 10:46:55.863 INFO [stderr]   |
Dec 02 10:46:55.863 INFO [stderr] 1 | #![feature(panic_info_message)]
Dec 02 10:46:55.863 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 10:46:55.863 INFO [stderr] 
Dec 02 10:46:55.863 INFO [stderr] error[E0554]: #![feature] may not be used on the beta release channel
Dec 02 10:46:55.863 INFO [stderr]  --> src/lib.rs:2:1
Dec 02 10:46:55.863 INFO [stderr]   |
Dec 02 10:46:55.863 INFO [stderr] 2 | #![feature(int_to_from_bytes)]
Dec 02 10:46:55.863 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 10:46:55.863 INFO [stderr] 
Dec 02 10:46:55.863 INFO [stderr] error: aborting due to 2 previous errors
Dec 02 10:46:55.863 INFO [stderr] 
Dec 02 10:46:55.863 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 10:46:55.873 INFO [stderr] error: Could not compile `x11-input-mirror`.
Dec 02 10:46:55.873 INFO [stderr] 
Dec 02 10:46:55.873 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 10:46:55.874 INFO [stderr] su: No module specific data is present
Dec 02 10:46:56.292 INFO running `"docker" "inspect" "27f379a61a2907792dabae131cb97f10c9420fba4e033b3d2b143a8f52f8a0cf"`
Dec 02 10:46:56.491 INFO running `"docker" "rm" "-f" "27f379a61a2907792dabae131cb97f10c9420fba4e033b3d2b143a8f52f8a0cf"`
Dec 02 10:46:56.670 INFO [stdout] 27f379a61a2907792dabae131cb97f10c9420fba4e033b3d2b143a8f52f8a0cf