Sep 04 07:09:30.554 INFO checking r4-1.0.1 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 07:09:30.554 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 07:09:30.554 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 07:09:30.786 INFO blam! 81aab1946a00e3442a6a2704c032c3e84f5a69bb81f887e72076625dde85ab7d
Sep 04 07:09:30.788 INFO running `"docker" "start" "-a" "81aab1946a00e3442a6a2704c032c3e84f5a69bb81f887e72076625dde85ab7d"`
Sep 04 07:09:31.508 INFO kablam!     Checking r4 v1.0.1 (file:///source)
Sep 04 07:09:32.456 INFO kablam! warning: unused variable: `i`
Sep 04 07:09:32.456 INFO kablam!    --> src/lib.rs:407:34
Sep 04 07:09:32.456 INFO kablam!     |
Sep 04 07:09:32.456 INFO kablam! 407 |                     iterate![for i in 0..4;
Sep 04 07:09:32.456 INFO kablam!     |                                  ^ help: consider using `_i` instead
Sep 04 07:09:32.456 INFO kablam!     |
Sep 04 07:09:32.456 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 04 07:09:32.456 INFO kablam! 
Sep 04 07:09:32.457 INFO kablam! warning: unused variable: `x`
Sep 04 07:09:32.457 INFO kablam!    --> src/lib.rs:433:34
Sep 04 07:09:32.457 INFO kablam!     |
Sep 04 07:09:32.457 INFO kablam! 433 |                     iterate![for x in vs.iter();
Sep 04 07:09:32.457 INFO kablam!     |                                  ^ help: consider using `_x` instead
Sep 04 07:09:32.457 INFO kablam! 
Sep 04 07:09:32.457 INFO kablam! warning: unused variable: `x`
Sep 04 07:09:32.457 INFO kablam!    --> src/lib.rs:443:34
Sep 04 07:09:32.457 INFO kablam!     |
Sep 04 07:09:32.457 INFO kablam! 443 |                     iterate![for x in vs.iter();
Sep 04 07:09:32.458 INFO kablam!     |                                  ^ help: consider using `_x` instead
Sep 04 07:09:32.458 INFO kablam! 
Sep 04 07:09:32.458 INFO kablam! warning: unused variable: `a`
Sep 04 07:09:32.458 INFO kablam!    --> src/lib.rs:474:34
Sep 04 07:09:32.458 INFO kablam!     |
Sep 04 07:09:32.458 INFO kablam! 474 |                              let a = *x + 3;
Sep 04 07:09:32.458 INFO kablam!     |                                  ^ help: consider using `_a` instead
Sep 04 07:09:32.458 INFO kablam! 
Sep 04 07:09:32.458 INFO kablam! warning: unused variable: `a`
Sep 04 07:09:32.458 INFO kablam!    --> src/lib.rs:489:34
Sep 04 07:09:32.458 INFO kablam!     |
Sep 04 07:09:32.458 INFO kablam! 489 |                              let a = *x + 3;
Sep 04 07:09:32.458 INFO kablam!     |                                  ^ help: consider using `_a` instead
Sep 04 07:09:32.458 INFO kablam! 
Sep 04 07:09:32.458 INFO kablam! warning: unused variable: `y`
Sep 04 07:09:32.458 INFO kablam!    --> src/lib.rs:506:34
Sep 04 07:09:32.458 INFO kablam!     |
Sep 04 07:09:32.458 INFO kablam! 506 |                              for y in vs.iter();
Sep 04 07:09:32.458 INFO kablam!     |                                  ^ help: consider using `_y` instead
Sep 04 07:09:32.458 INFO kablam! 
Sep 04 07:09:32.458 INFO kablam! warning: unused variable: `x`
Sep 04 07:09:32.458 INFO kablam!    --> src/lib.rs:522:34
Sep 04 07:09:32.458 INFO kablam!     |
Sep 04 07:09:32.458 INFO kablam! 522 |                              let x = *x + 1;
Sep 04 07:09:32.458 INFO kablam!     |                                  ^ help: consider using `_x` instead
Sep 04 07:09:32.458 INFO kablam! 
Sep 04 07:09:32.624 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
Sep 04 07:09:32.627 INFO kablam! su: No module specific data is present
Sep 04 07:09:33.257 INFO running `"docker" "rm" "-f" "81aab1946a00e3442a6a2704c032c3e84f5a69bb81f887e72076625dde85ab7d"`
Sep 04 07:09:33.411 INFO blam! 81aab1946a00e3442a6a2704c032c3e84f5a69bb81f887e72076625dde85ab7d