Dec 05 07:22:21.866 INFO checking rustc-hex-2.0.1 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 07:22:21.866 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 07:22:22.251 INFO [stdout] 7c0ec1ec27650e32c2249706de8f9335fad147e678f47d917faa2cee94948da8
Dec 05 07:22:22.253 INFO running `"docker" "start" "-a" "7c0ec1ec27650e32c2249706de8f9335fad147e678f47d917faa2cee94948da8"`
Dec 05 07:22:23.391 INFO [stderr] usermod: no changes
Dec 05 07:22:23.415 INFO [stderr]     Checking rustc-hex v2.0.1 (/source)
Dec 05 07:22:24.735 INFO [stderr] error[E0283]: type annotations required: cannot resolve `_: std::iter::FromIterator<char>`
Dec 05 07:22:24.735 INFO [stderr]   --> benches/hex.rs:14:22
Dec 05 07:22:24.735 INFO [stderr]    |
Dec 05 07:22:24.735 INFO [stderr] 14 |         s.as_bytes().to_hex();
Dec 05 07:22:24.735 INFO [stderr]    |                      ^^^^^^
Dec 05 07:22:24.735 INFO [stderr] 
Dec 05 07:22:24.735 INFO [stderr] error[E0282]: type annotations needed
Dec 05 07:22:24.735 INFO [stderr]   --> benches/hex.rs:25:9
Dec 05 07:22:24.735 INFO [stderr]    |
Dec 05 07:22:24.735 INFO [stderr] 23 |     let sb = s.as_bytes().to_hex();
Dec 05 07:22:24.735 INFO [stderr]    |         -- consider giving `sb` a type
Dec 05 07:22:24.735 INFO [stderr] 24 |     b.iter(|| {
Dec 05 07:22:24.735 INFO [stderr] 25 |         sb.from_hex().unwrap();
Dec 05 07:22:24.735 INFO [stderr]    |         ^^ cannot infer type
Dec 05 07:22:24.735 INFO [stderr]    |
Dec 05 07:22:24.735 INFO [stderr]    = note: type must be known at this point
Dec 05 07:22:24.735 INFO [stderr] 
Dec 05 07:22:24.735 INFO [stderr] error: aborting due to 2 previous errors
Dec 05 07:22:24.735 INFO [stderr] 
Dec 05 07:22:24.735 INFO [stderr] Some errors occurred: E0282, E0283.
Dec 05 07:22:24.735 INFO [stderr] For more information about an error, try `rustc --explain E0282`.
Dec 05 07:22:24.739 INFO [stderr] error: Could not compile `rustc-hex`.
Dec 05 07:22:24.739 INFO [stderr] 
Dec 05 07:22:24.739 INFO [stderr] To learn more, run the command again with --verbose.
Dec 05 07:22:24.739 INFO [stderr] su: No module specific data is present
Dec 05 07:22:25.141 INFO running `"docker" "inspect" "7c0ec1ec27650e32c2249706de8f9335fad147e678f47d917faa2cee94948da8"`
Dec 05 07:22:25.244 INFO running `"docker" "rm" "-f" "7c0ec1ec27650e32c2249706de8f9335fad147e678f47d917faa2cee94948da8"`
Dec 05 07:22:25.379 INFO [stdout] 7c0ec1ec27650e32c2249706de8f9335fad147e678f47d917faa2cee94948da8