Dec 03 11:52:18.897 INFO testing fixed_width_derive-0.1.0 against 1.30.1 for beta-1.31-5
Dec 03 11:52:18.897 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 11:52:19.191 INFO [stdout] 7d9990d6d311b26ddfa22b5e70a30ff30adbe94e957c1f3fdddba0b9e872e741
Dec 03 11:52:19.193 INFO running `"docker" "start" "-a" "7d9990d6d311b26ddfa22b5e70a30ff30adbe94e957c1f3fdddba0b9e872e741"`
Dec 03 11:52:19.735 INFO [stderr] usermod: no changes
Dec 03 11:52:19.780 INFO [stderr]    Compiling fixed_width v0.1.0
Dec 03 11:52:21.250 INFO [stderr]    Compiling fixed_width_derive v0.1.0 (/source)
Dec 03 11:52:24.923 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 11:52:24.923 INFO [stderr]   --> src/lib.rs:89:1
Dec 03 11:52:24.924 INFO [stderr]    |
Dec 03 11:52:24.924 INFO [stderr] 89 | #![feature(proc_macro)]
Dec 03 11:52:24.927 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 11:52:24.927 INFO [stderr] 
Dec 03 11:52:24.927 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 03 11:52:24.927 INFO [stderr]   --> src/lib.rs:90:1
Dec 03 11:52:24.927 INFO [stderr]    |
Dec 03 11:52:24.927 INFO [stderr] 90 | #![feature(extern_prelude)]
Dec 03 11:52:24.927 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 03 11:52:24.927 INFO [stderr] 
Dec 03 11:52:24.927 INFO [stderr] error: aborting due to 2 previous errors
Dec 03 11:52:24.927 INFO [stderr] 
Dec 03 11:52:24.927 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 03 11:52:24.927 INFO [stderr] error: Could not compile `fixed_width_derive`.
Dec 03 11:52:24.927 INFO [stderr] 
Dec 03 11:52:24.927 INFO [stderr] To learn more, run the command again with --verbose.
Dec 03 11:52:24.931 INFO [stderr] su: No module specific data is present
Dec 03 11:52:25.220 INFO running `"docker" "inspect" "7d9990d6d311b26ddfa22b5e70a30ff30adbe94e957c1f3fdddba0b9e872e741"`
Dec 03 11:52:25.345 INFO running `"docker" "rm" "-f" "7d9990d6d311b26ddfa22b5e70a30ff30adbe94e957c1f3fdddba0b9e872e741"`
Dec 03 11:52:25.448 INFO [stdout] 7d9990d6d311b26ddfa22b5e70a30ff30adbe94e957c1f3fdddba0b9e872e741