Sep 01 08:01:07.965 INFO checking rustc-hex-2.0.1 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 08:01:07.965 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 08:01:07.965 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-1/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 08:01:08.166 INFO blam! b2c0e997e908003aa811bcca0278a7913eec3b0180864a48fe948ef96ad92692
Sep 01 08:01:08.169 INFO running `"docker" "start" "-a" "b2c0e997e908003aa811bcca0278a7913eec3b0180864a48fe948ef96ad92692"`
Sep 01 08:01:08.988 INFO kablam!     Checking rustc-hex v2.0.1 (file:///source)
Sep 01 08:01:10.188 INFO kablam! error[E0283]: type annotations required: cannot resolve `_: std::iter::FromIterator<char>`
Sep 01 08:01:10.188 INFO kablam!   --> benches/hex.rs:14:22
Sep 01 08:01:10.188 INFO kablam!    |
Sep 01 08:01:10.188 INFO kablam! 14 |         s.as_bytes().to_hex();
Sep 01 08:01:10.188 INFO kablam!    |                      ^^^^^^
Sep 01 08:01:10.188 INFO kablam! 
Sep 01 08:01:10.189 INFO kablam! error[E0282]: type annotations needed
Sep 01 08:01:10.189 INFO kablam!   --> benches/hex.rs:25:9
Sep 01 08:01:10.189 INFO kablam!    |
Sep 01 08:01:10.189 INFO kablam! 23 |     let sb = s.as_bytes().to_hex();
Sep 01 08:01:10.189 INFO kablam!    |         -- consider giving `sb` a type
Sep 01 08:01:10.189 INFO kablam! 24 |     b.iter(|| {
Sep 01 08:01:10.189 INFO kablam! 25 |         sb.from_hex().unwrap();
Sep 01 08:01:10.189 INFO kablam!    |         ^^ cannot infer type
Sep 01 08:01:10.189 INFO kablam!    |
Sep 01 08:01:10.189 INFO kablam!    = note: type must be known at this point
Sep 01 08:01:10.189 INFO kablam! 
Sep 01 08:01:10.190 INFO kablam! error: aborting due to 2 previous errors
Sep 01 08:01:10.190 INFO kablam! 
Sep 01 08:01:10.190 INFO kablam! Some errors occurred: E0282, E0283.
Sep 01 08:01:10.190 INFO kablam! For more information about an error, try `rustc --explain E0282`.
Sep 01 08:01:10.196 INFO kablam! error: Could not compile `rustc-hex`.
Sep 01 08:01:10.196 INFO kablam! 
Sep 01 08:01:10.196 INFO kablam! To learn more, run the command again with --verbose.
Sep 01 08:01:10.197 INFO kablam! su: No module specific data is present
Sep 01 08:01:10.905 INFO running `"docker" "rm" "-f" "b2c0e997e908003aa811bcca0278a7913eec3b0180864a48fe948ef96ad92692"`
Sep 01 08:01:10.995 INFO blam! b2c0e997e908003aa811bcca0278a7913eec3b0180864a48fe948ef96ad92692