Dec 03 12:31:03.752 INFO testing exar-server-0.1.0 against 1.30.1 for beta-1.31-5
Dec 03 12:31:03.752 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 03 12:31:03.906 INFO [stdout] ce4ddf9b503ecbf5ed6b59de4c5b6da129601aac3c9d15a22917c145852d6c4c
Dec 03 12:31:03.912 INFO running `"docker" "start" "-a" "ce4ddf9b503ecbf5ed6b59de4c5b6da129601aac3c9d15a22917c145852d6c4c"`
Dec 03 12:31:04.407 INFO [stderr] usermod: no changes
Dec 03 12:31:04.466 INFO [stderr]    Compiling indexed-line-reader v0.2.0
Dec 03 12:31:05.401 INFO [stderr]    Compiling exar v0.1.0
Dec 03 12:31:10.185 INFO [stderr]    Compiling exar-net v0.1.0
Dec 03 12:31:12.103 INFO [stderr]    Compiling exar-server v0.1.0 (/source)
Dec 03 12:31:14.131 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.69s
Dec 03 12:31:14.131 INFO [stderr] su: No module specific data is present
Dec 03 12:31:14.827 INFO running `"docker" "inspect" "ce4ddf9b503ecbf5ed6b59de4c5b6da129601aac3c9d15a22917c145852d6c4c"`
Dec 03 12:31:15.160 INFO running `"docker" "rm" "-f" "ce4ddf9b503ecbf5ed6b59de4c5b6da129601aac3c9d15a22917c145852d6c4c"`
Dec 03 12:31:15.411 INFO [stdout] ce4ddf9b503ecbf5ed6b59de4c5b6da129601aac3c9d15a22917c145852d6c4c
Dec 03 12:31:15.413 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-5/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 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 12:31:15.851 INFO [stdout] e14cb687fb405d709266bd4c0b52a112d552cb91c1819f67ca0a63a6ac36ea3e
Dec 03 12:31:15.853 INFO running `"docker" "start" "-a" "e14cb687fb405d709266bd4c0b52a112d552cb91c1819f67ca0a63a6ac36ea3e"`
Dec 03 12:31:16.943 INFO [stderr] usermod: no changes
Dec 03 12:31:17.044 INFO [stderr]    Compiling exar-testkit v0.1.0
Dec 03 12:31:17.987 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 12:31:17.987 INFO [stderr]  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/exar-testkit-0.1.0/src/lib.rs:1:1
Dec 03 12:31:17.987 INFO [stderr]   |
Dec 03 12:31:17.988 INFO [stderr] 1 | #![feature(const_fn)]
Dec 03 12:31:17.988 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 03 12:31:17.988 INFO [stderr] 
Dec 03 12:31:17.988 INFO [stderr] error: aborting due to previous error
Dec 03 12:31:17.989 INFO [stderr] 
Dec 03 12:31:17.989 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 12:31:17.995 INFO [stderr] error: Could not compile `exar-testkit`.
Dec 03 12:31:17.995 INFO [stderr] 
Dec 03 12:31:17.995 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 12:31:17.997 INFO [stderr] su: No module specific data is present
Dec 03 12:31:18.708 INFO running `"docker" "inspect" "e14cb687fb405d709266bd4c0b52a112d552cb91c1819f67ca0a63a6ac36ea3e"`
Dec 03 12:31:19.041 INFO running `"docker" "rm" "-f" "e14cb687fb405d709266bd4c0b52a112d552cb91c1819f67ca0a63a6ac36ea3e"`
Dec 03 12:31:19.210 INFO [stdout] e14cb687fb405d709266bd4c0b52a112d552cb91c1819f67ca0a63a6ac36ea3e