Aug 10 19:29:37.943 INFO checking jasongraalum/generic_tree against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1 Aug 10 19:29:37.943 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets Aug 10 19:29:37.943 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets Aug 10 19:29:37.944 INFO running `"docker" "create" "-v" "/tmp/crater.mcrhs7CMcVL4:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-4/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"` Aug 10 19:29:38.198 INFO blam! 3bd600d57f046c66979edf69578e84bf203d4cd2cb814bc6402a10d99cd20124 Aug 10 19:29:38.200 INFO running `"docker" "start" "-a" "3bd600d57f046c66979edf69578e84bf203d4cd2cb814bc6402a10d99cd20124"` Aug 10 19:29:39.324 INFO kablam! Checking generic_tree v0.1.0 (file:///source) Aug 10 19:29:39.602 INFO kablam! error[E0499]: cannot borrow `tree.0` as mutable more than once at a time Aug 10 19:29:39.603 INFO kablam! --> src/lib.rs:79:28 Aug 10 19:29:39.603 INFO kablam! | Aug 10 19:29:39.603 INFO kablam! 79 | while let NonEmpty(ref mut node) = *tree { Aug 10 19:29:39.603 INFO kablam! | ^^^^^^^^^^^^ mutable borrow starts here in previous iteration of loop Aug 10 19:29:39.603 INFO kablam! ... Aug 10 19:29:39.603 INFO kablam! 83 | } Aug 10 19:29:39.603 INFO kablam! | - mutable borrow ends here Aug 10 19:29:39.603 INFO kablam! Aug 10 19:29:39.603 INFO kablam! error[E0506]: cannot assign to `tree` because it is borrowed Aug 10 19:29:39.603 INFO kablam! --> src/lib.rs:81:13 Aug 10 19:29:39.603 INFO kablam! | Aug 10 19:29:39.603 INFO kablam! 79 | while let NonEmpty(ref mut node) = *tree { Aug 10 19:29:39.604 INFO kablam! | ------------ borrow of `tree` occurs here Aug 10 19:29:39.604 INFO kablam! 80 | self.iter_stack.push(node); Aug 10 19:29:39.604 INFO kablam! 81 | tree = & mut node.left; Aug 10 19:29:39.604 INFO kablam! | ^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `tree` occurs here Aug 10 19:29:39.604 INFO kablam! Aug 10 19:29:39.604 INFO kablam! error[E0499]: cannot borrow `node.left` as mutable more than once at a time Aug 10 19:29:39.604 INFO kablam! --> src/lib.rs:81:26 Aug 10 19:29:39.604 INFO kablam! | Aug 10 19:29:39.604 INFO kablam! 79 | while let NonEmpty(ref mut node) = *tree { Aug 10 19:29:39.604 INFO kablam! | - first borrow ends here Aug 10 19:29:39.604 INFO kablam! 80 | self.iter_stack.push(node); Aug 10 19:29:39.604 INFO kablam! | ---- first mutable borrow occurs here Aug 10 19:29:39.604 INFO kablam! 81 | tree = & mut node.left; Aug 10 19:29:39.604 INFO kablam! | ^^^^^^^^^ second mutable borrow occurs here Aug 10 19:29:39.604 INFO kablam! Aug 10 19:29:39.609 INFO kablam! error: aborting due to 3 previous errors Aug 10 19:29:39.610 INFO kablam! Aug 10 19:29:39.610 INFO kablam! Some errors occurred: E0499, E0506. Aug 10 19:29:39.610 INFO kablam! For more information about an error, try `rustc --explain E0499`. Aug 10 19:29:39.623 INFO kablam! error: Could not compile `generic_tree`. Aug 10 19:29:39.624 INFO kablam! warning: build failed, waiting for other jobs to finish... Aug 10 19:29:39.633 INFO kablam! warning: unused variable: `i` Aug 10 19:29:39.633 INFO kablam! --> src/lib.rs:179:9 Aug 10 19:29:39.633 INFO kablam! | Aug 10 19:29:39.633 INFO kablam! 179 | for i in 0..3 { Aug 10 19:29:39.633 INFO kablam! | ^ help: consider using `_i` instead Aug 10 19:29:39.633 INFO kablam! | Aug 10 19:29:39.633 INFO kablam! = note: #[warn(unused_variables)] on by default Aug 10 19:29:39.633 INFO kablam! Aug 10 19:29:39.633 INFO kablam! warning: unused variable: `vec_reverse` Aug 10 19:29:39.633 INFO kablam! --> src/lib.rs:181:13 Aug 10 19:29:39.633 INFO kablam! | Aug 10 19:29:39.633 INFO kablam! 181 | let vec_reverse = node_vec.reverse(); Aug 10 19:29:39.633 INFO kablam! | ^^^^^^^^^^^ help: consider using `_vec_reverse` instead Aug 10 19:29:39.633 INFO kablam! Aug 10 19:29:39.634 INFO kablam! warning: unused variable: `node_vec` Aug 10 19:29:39.634 INFO kablam! --> src/lib.rs:191:13 Aug 10 19:29:39.634 INFO kablam! | Aug 10 19:29:39.634 INFO kablam! 191 | let mut node_vec: Vec = vec![1,6,7,8,10,13,20]; Aug 10 19:29:39.634 INFO kablam! | ^^^^^^^^ help: consider using `_node_vec` instead Aug 10 19:29:39.635 INFO kablam! Aug 10 19:29:39.641 INFO kablam! error[E0499]: cannot borrow `tree.0` as mutable more than once at a time Aug 10 19:29:39.641 INFO kablam! --> src/lib.rs:79:28 Aug 10 19:29:39.641 INFO kablam! | Aug 10 19:29:39.641 INFO kablam! 79 | while let NonEmpty(ref mut node) = *tree { Aug 10 19:29:39.641 INFO kablam! | ^^^^^^^^^^^^ mutable borrow starts here in previous iteration of loop Aug 10 19:29:39.641 INFO kablam! ... Aug 10 19:29:39.641 INFO kablam! 83 | } Aug 10 19:29:39.641 INFO kablam! | - mutable borrow ends here Aug 10 19:29:39.641 INFO kablam! Aug 10 19:29:39.641 INFO kablam! error[E0506]: cannot assign to `tree` because it is borrowed Aug 10 19:29:39.641 INFO kablam! --> src/lib.rs:81:13 Aug 10 19:29:39.641 INFO kablam! | Aug 10 19:29:39.641 INFO kablam! 79 | while let NonEmpty(ref mut node) = *tree { Aug 10 19:29:39.641 INFO kablam! | ------------ borrow of `tree` occurs here Aug 10 19:29:39.641 INFO kablam! 80 | self.iter_stack.push(node); Aug 10 19:29:39.642 INFO kablam! 81 | tree = & mut node.left; Aug 10 19:29:39.642 INFO kablam! | ^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `tree` occurs here Aug 10 19:29:39.642 INFO kablam! Aug 10 19:29:39.642 INFO kablam! error[E0499]: cannot borrow `node.left` as mutable more than once at a time Aug 10 19:29:39.642 INFO kablam! --> src/lib.rs:81:26 Aug 10 19:29:39.642 INFO kablam! | Aug 10 19:29:39.642 INFO kablam! 79 | while let NonEmpty(ref mut node) = *tree { Aug 10 19:29:39.642 INFO kablam! | - first borrow ends here Aug 10 19:29:39.642 INFO kablam! 80 | self.iter_stack.push(node); Aug 10 19:29:39.642 INFO kablam! | ---- first mutable borrow occurs here Aug 10 19:29:39.642 INFO kablam! 81 | tree = & mut node.left; Aug 10 19:29:39.642 INFO kablam! | ^^^^^^^^^ second mutable borrow occurs here Aug 10 19:29:39.642 INFO kablam! Aug 10 19:29:39.652 INFO kablam! warning: variable does not need to be mutable Aug 10 19:29:39.652 INFO kablam! --> src/lib.rs:191:9 Aug 10 19:29:39.652 INFO kablam! | Aug 10 19:29:39.652 INFO kablam! 191 | let mut node_vec: Vec = vec![1,6,7,8,10,13,20]; Aug 10 19:29:39.652 INFO kablam! | ----^^^^^^^^ Aug 10 19:29:39.652 INFO kablam! | | Aug 10 19:29:39.652 INFO kablam! | help: remove this `mut` Aug 10 19:29:39.653 INFO kablam! | Aug 10 19:29:39.653 INFO kablam! = note: #[warn(unused_mut)] on by default Aug 10 19:29:39.654 INFO kablam! Aug 10 19:29:39.667 INFO kablam! error: aborting due to 3 previous errors Aug 10 19:29:39.667 INFO kablam! Aug 10 19:29:39.667 INFO kablam! Some errors occurred: E0499, E0506. Aug 10 19:29:39.667 INFO kablam! For more information about an error, try `rustc --explain E0499`. Aug 10 19:29:39.674 INFO kablam! error: Could not compile `generic_tree`. Aug 10 19:29:39.674 INFO kablam! Aug 10 19:29:39.674 INFO kablam! To learn more, run the command again with --verbose. Aug 10 19:29:39.676 INFO kablam! su: No module specific data is present Aug 10 19:29:40.482 INFO running `"docker" "rm" "-f" "3bd600d57f046c66979edf69578e84bf203d4cd2cb814bc6402a10d99cd20124"` Aug 10 19:29:40.647 INFO blam! 3bd600d57f046c66979edf69578e84bf203d4cd2cb814bc6402a10d99cd20124