Sep 10 12:21:10.919 INFO checking r4-1.0.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 12:21:10.919 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 12:21:10.919 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-2/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 12:21:11.103 INFO blam! 3df05145516bae78b6a772d671b7f7e653f92e74beaad4cfc2a25e1f79598752
Sep 10 12:21:11.104 INFO running `"docker" "start" "-a" "3df05145516bae78b6a772d671b7f7e653f92e74beaad4cfc2a25e1f79598752"`
Sep 10 12:21:11.902 INFO kablam! usermod: no changes
Sep 10 12:21:11.954 INFO kablam!     Checking r4 v1.0.1 (file:///source)
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `i`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:407:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 407 |                     iterate![for i in 0..4;
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_i` instead
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam!     = note: #[warn(unused_variables)] on by default
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `x`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:433:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 433 |                     iterate![for x in vs.iter();
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_x` instead
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `x`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:443:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 443 |                     iterate![for x in vs.iter();
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_x` instead
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `a`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:474:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 474 |                              let a = *x + 3;
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_a` instead
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `a`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:489:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 489 |                              let a = *x + 3;
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_a` instead
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `y`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:506:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 506 |                              for y in vs.iter();
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_y` instead
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.481 INFO kablam! warning: unused variable: `x`
Sep 10 12:21:12.481 INFO kablam!    --> src/lib.rs:522:34
Sep 10 12:21:12.481 INFO kablam!     |
Sep 10 12:21:12.481 INFO kablam! 522 |                              let x = *x + 1;
Sep 10 12:21:12.481 INFO kablam!     |                                  ^ help: consider using `_x` instead
Sep 10 12:21:12.481 INFO kablam! 
Sep 10 12:21:12.565 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Sep 10 12:21:12.567 INFO kablam! su: No module specific data is present
Sep 10 12:21:13.191 INFO running `"docker" "rm" "-f" "3df05145516bae78b6a772d671b7f7e653f92e74beaad4cfc2a25e1f79598752"`
Sep 10 12:21:13.286 INFO blam! 3df05145516bae78b6a772d671b7f7e653f92e74beaad4cfc2a25e1f79598752