Sep 10 10:37:39.878 INFO checking rustc-hex-2.0.1 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 10:37:39.878 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 10:37:39.878 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 10:37:40.088 INFO blam! 280888d798a42b4e7f5da22c1a206b543686ffbd876a8dba91226e04e90b97bf
Sep 10 10:37:40.090 INFO running `"docker" "start" "-a" "280888d798a42b4e7f5da22c1a206b543686ffbd876a8dba91226e04e90b97bf"`
Sep 10 10:37:41.089 INFO kablam! usermod: no changes
Sep 10 10:37:41.162 INFO kablam!     Checking rustc-hex v2.0.1 (file:///source)
Sep 10 10:37:42.229 INFO kablam! error[E0283]: type annotations required: cannot resolve `_: std::iter::FromIterator<char>`
Sep 10 10:37:42.229 INFO kablam!   --> benches/hex.rs:14:22
Sep 10 10:37:42.229 INFO kablam!    |
Sep 10 10:37:42.229 INFO kablam! 14 |         s.as_bytes().to_hex();
Sep 10 10:37:42.229 INFO kablam!    |                      ^^^^^^
Sep 10 10:37:42.229 INFO kablam! 
Sep 10 10:37:42.229 INFO kablam! error[E0282]: type annotations needed
Sep 10 10:37:42.229 INFO kablam!   --> benches/hex.rs:25:9
Sep 10 10:37:42.229 INFO kablam!    |
Sep 10 10:37:42.229 INFO kablam! 23 |     let sb = s.as_bytes().to_hex();
Sep 10 10:37:42.229 INFO kablam!    |         -- consider giving `sb` a type
Sep 10 10:37:42.229 INFO kablam! 24 |     b.iter(|| {
Sep 10 10:37:42.229 INFO kablam! 25 |         sb.from_hex().unwrap();
Sep 10 10:37:42.229 INFO kablam!    |         ^^ cannot infer type
Sep 10 10:37:42.229 INFO kablam!    |
Sep 10 10:37:42.229 INFO kablam!    = note: type must be known at this point
Sep 10 10:37:42.230 INFO kablam! 
Sep 10 10:37:42.230 INFO kablam! error: aborting due to 2 previous errors
Sep 10 10:37:42.230 INFO kablam! 
Sep 10 10:37:42.230 INFO kablam! Some errors occurred: E0282, E0283.
Sep 10 10:37:42.230 INFO kablam! For more information about an error, try `rustc --explain E0282`.
Sep 10 10:37:42.250 INFO kablam! error: Could not compile `rustc-hex`.
Sep 10 10:37:42.250 INFO kablam! 
Sep 10 10:37:42.250 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 10:37:42.250 INFO kablam! su: No module specific data is present
Sep 10 10:37:42.981 INFO running `"docker" "rm" "-f" "280888d798a42b4e7f5da22c1a206b543686ffbd876a8dba91226e04e90b97bf"`
Sep 10 10:37:43.082 INFO blam! 280888d798a42b4e7f5da22c1a206b543686ffbd876a8dba91226e04e90b97bf