Sep 21 03:52:49.613 INFO checking rustc-hex-2.0.1 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 03:52:49.613 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 03:52:49.613 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-0/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 03:52:49.835 INFO blam! 581550a0d3835067544d11033527ef9afabdd95cdbc20a8cbb9ecb63395a6a85
Sep 21 03:52:49.837 INFO running `"docker" "start" "-a" "581550a0d3835067544d11033527ef9afabdd95cdbc20a8cbb9ecb63395a6a85"`
Sep 21 03:52:50.571 INFO kablam! usermod: no changes
Sep 21 03:52:50.599 INFO kablam!     Checking rustc-hex v2.0.1 (/source)
Sep 21 03:52:51.215 INFO kablam! error[E0283]: type annotations required: cannot resolve `_: std::iter::FromIterator<char>`
Sep 21 03:52:51.215 INFO kablam!   --> benches/hex.rs:14:22
Sep 21 03:52:51.215 INFO kablam!    |
Sep 21 03:52:51.215 INFO kablam! 14 |         s.as_bytes().to_hex();
Sep 21 03:52:51.215 INFO kablam!    |                      ^^^^^^
Sep 21 03:52:51.215 INFO kablam! 
Sep 21 03:52:51.215 INFO kablam! error[E0282]: type annotations needed
Sep 21 03:52:51.215 INFO kablam!   --> benches/hex.rs:25:9
Sep 21 03:52:51.215 INFO kablam!    |
Sep 21 03:52:51.215 INFO kablam! 23 |     let sb = s.as_bytes().to_hex();
Sep 21 03:52:51.215 INFO kablam!    |         -- consider giving `sb` a type
Sep 21 03:52:51.215 INFO kablam! 24 |     b.iter(|| {
Sep 21 03:52:51.215 INFO kablam! 25 |         sb.from_hex().unwrap();
Sep 21 03:52:51.215 INFO kablam!    |         ^^ cannot infer type
Sep 21 03:52:51.215 INFO kablam!    |
Sep 21 03:52:51.215 INFO kablam!    = note: type must be known at this point
Sep 21 03:52:51.215 INFO kablam! 
Sep 21 03:52:51.215 INFO kablam! error: aborting due to 2 previous errors
Sep 21 03:52:51.215 INFO kablam! 
Sep 21 03:52:51.215 INFO kablam! Some errors occurred: E0282, E0283.
Sep 21 03:52:51.215 INFO kablam! For more information about an error, try `rustc --explain E0282`.
Sep 21 03:52:51.224 INFO kablam! error: Could not compile `rustc-hex`.
Sep 21 03:52:51.224 INFO kablam! 
Sep 21 03:52:51.224 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 03:52:51.225 INFO kablam! su: No module specific data is present
Sep 21 03:52:52.100 INFO running `"docker" "rm" "-f" "581550a0d3835067544d11033527ef9afabdd95cdbc20a8cbb9ecb63395a6a85"`
Sep 21 03:52:52.233 INFO blam! 581550a0d3835067544d11033527ef9afabdd95cdbc20a8cbb9ecb63395a6a85