Aug 11 19:35:51.680 INFO checking avl_tree-0.2.0 against try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy for libc-1
Aug 11 19:35:51.680 INFO running: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 19:35:51.680 INFO creating container for: cargo +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets
Aug 11 19:35:51.680 INFO running `"docker" "create" "-v" "/tmp/crater.12F8eX3Uk3Rq:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-1/try#a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195+tmplazy:/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 +a77dfcc79fe3e7e1a10ae4dccfd4b2e5e0e49195-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 19:35:52.015 INFO blam! 36022a20ba2075b33a83f6b2d18765326285179af9da3accd0a296e16ae81119
Aug 11 19:35:52.020 INFO running `"docker" "start" "-a" "36022a20ba2075b33a83f6b2d18765326285179af9da3accd0a296e16ae81119"`
Aug 11 19:35:53.071 INFO kablam!     Checking avl_tree v0.2.0 (file:///source)
Aug 11 19:35:54.494 INFO kablam! warning: unnecessary parentheses around function argument
Aug 11 19:35:54.494 INFO kablam!    --> src/node.rs:252:20
Aug 11 19:35:54.494 INFO kablam!     |
Aug 11 19:35:54.494 INFO kablam! 252 |         t = insert((x as u64),1337+x-1,t)
Aug 11 19:35:54.494 INFO kablam!     |                    ^^^^^^^^^^ help: remove these parentheses
Aug 11 19:35:54.494 INFO kablam!     |
Aug 11 19:35:54.494 INFO kablam!     = note: #[warn(unused_parens)] on by default
Aug 11 19:35:54.494 INFO kablam! 
Aug 11 19:35:54.495 INFO kablam! warning: unused imports: `max`, `min`, `to_string`
Aug 11 19:35:54.495 INFO kablam!  --> src/tree.rs:5:33
Aug 11 19:35:54.495 INFO kablam!   |
Aug 11 19:35:54.495 INFO kablam! 5 | use node::{insert,delete,search,min,max,is_avl_tree, to_string, min_pair, max_pair};
Aug 11 19:35:54.495 INFO kablam!   |                                 ^^^ ^^^              ^^^^^^^^^
Aug 11 19:35:54.495 INFO kablam!   |
Aug 11 19:35:54.495 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 11 19:35:54.495 INFO kablam! 
Aug 11 19:35:54.518 INFO kablam! warning: unnecessary parentheses around function argument
Aug 11 19:35:54.518 INFO kablam!    --> src/node.rs:252:20
Aug 11 19:35:54.518 INFO kablam!     |
Aug 11 19:35:54.518 INFO kablam! 252 |         t = insert((x as u64),1337+x-1,t)
Aug 11 19:35:54.518 INFO kablam!     |                    ^^^^^^^^^^ help: remove these parentheses
Aug 11 19:35:54.518 INFO kablam!     |
Aug 11 19:35:54.518 INFO kablam!     = note: #[warn(unused_parens)] on by default
Aug 11 19:35:54.519 INFO kablam! 
Aug 11 19:35:54.520 INFO kablam! warning: unused imports: `max`, `min`, `to_string`
Aug 11 19:35:54.520 INFO kablam!  --> src/tree.rs:5:33
Aug 11 19:35:54.520 INFO kablam!   |
Aug 11 19:35:54.520 INFO kablam! 5 | use node::{insert,delete,search,min,max,is_avl_tree, to_string, min_pair, max_pair};
Aug 11 19:35:54.520 INFO kablam!   |                                 ^^^ ^^^              ^^^^^^^^^
Aug 11 19:35:54.520 INFO kablam!   |
Aug 11 19:35:54.520 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 11 19:35:54.520 INFO kablam! 
Aug 11 19:35:55.329 INFO kablam! warning: function is never used: `contains`
Aug 11 19:35:55.329 INFO kablam!    --> src/node.rs:145:1
Aug 11 19:35:55.329 INFO kablam!     |
Aug 11 19:35:55.329 INFO kablam! 145 | fn contains<K:Ord,D>(key: &K, root: &Box<Node<K,D>> ) -> bool  {
Aug 11 19:35:55.329 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.329 INFO kablam!     |
Aug 11 19:35:55.329 INFO kablam!     = note: #[warn(dead_code)] on by default
Aug 11 19:35:55.330 INFO kablam! 
Aug 11 19:35:55.330 INFO kablam! warning: function is never used: `min`
Aug 11 19:35:55.330 INFO kablam!    --> src/node.rs:175:1
Aug 11 19:35:55.330 INFO kablam!     |
Aug 11 19:35:55.330 INFO kablam! 175 | pub fn min<K:Ord,D>(root: &Box<Node<K,D>>) -> &D {
Aug 11 19:35:55.330 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.330 INFO kablam! 
Aug 11 19:35:55.330 INFO kablam! warning: function is never used: `max`
Aug 11 19:35:55.330 INFO kablam!    --> src/node.rs:180:1
Aug 11 19:35:55.330 INFO kablam!     |
Aug 11 19:35:55.330 INFO kablam! 180 | pub fn max<K:Ord,D>(root: &Box<Node<K,D>>) -> &D {
Aug 11 19:35:55.330 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.331 INFO kablam! 
Aug 11 19:35:55.331 INFO kablam! warning: function is never used: `simple_tree`
Aug 11 19:35:55.331 INFO kablam!    --> src/node.rs:249:1
Aug 11 19:35:55.331 INFO kablam!     |
Aug 11 19:35:55.331 INFO kablam! 249 | fn simple_tree(size: i32) -> Box<Node<u64,i32>> {
Aug 11 19:35:55.331 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.331 INFO kablam! 
Aug 11 19:35:55.331 INFO kablam! warning: function is never used: `is_sorted_left`
Aug 11 19:35:55.331 INFO kablam!    --> src/node.rs:257:1
Aug 11 19:35:55.331 INFO kablam!     |
Aug 11 19:35:55.331 INFO kablam! 257 | fn is_sorted_left<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
Aug 11 19:35:55.331 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.331 INFO kablam! 
Aug 11 19:35:55.332 INFO kablam! warning: function is never used: `is_sorted_right`
Aug 11 19:35:55.332 INFO kablam!    --> src/node.rs:261:1
Aug 11 19:35:55.332 INFO kablam!     |
Aug 11 19:35:55.332 INFO kablam! 261 | fn is_sorted_right<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
Aug 11 19:35:55.332 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.332 INFO kablam! 
Aug 11 19:35:55.332 INFO kablam! warning: function is never used: `is_avl_node`
Aug 11 19:35:55.332 INFO kablam!    --> src/node.rs:265:1
Aug 11 19:35:55.332 INFO kablam!     |
Aug 11 19:35:55.332 INFO kablam! 265 | fn is_avl_node<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
Aug 11 19:35:55.332 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.332 INFO kablam! 
Aug 11 19:35:55.332 INFO kablam! warning: function is never used: `is_avl_tree`
Aug 11 19:35:55.332 INFO kablam!    --> src/node.rs:271:1
Aug 11 19:35:55.332 INFO kablam!     |
Aug 11 19:35:55.332 INFO kablam! 271 | pub fn is_avl_tree<K:Ord,D>(root: &Option<Box<Node<K,D>>>) -> bool {
Aug 11 19:35:55.332 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.333 INFO kablam! 
Aug 11 19:35:55.333 INFO kablam! warning: method is never used: `test_avl_tree`
Aug 11 19:35:55.333 INFO kablam!    --> src/tree.rs:183:5
Aug 11 19:35:55.333 INFO kablam!     |
Aug 11 19:35:55.333 INFO kablam! 183 |     fn test_avl_tree(&self) -> bool {
Aug 11 19:35:55.333 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.333 INFO kablam! 
Aug 11 19:35:55.336 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Aug 11 19:35:55.337 INFO kablam!  --> src/lib.rs:4:12
Aug 11 19:35:55.337 INFO kablam!   |
Aug 11 19:35:55.337 INFO kablam! 4 | #![feature(collections_bound)]
Aug 11 19:35:55.337 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.337 INFO kablam!   |
Aug 11 19:35:55.337 INFO kablam!   = note: #[warn(stable_features)] on by default
Aug 11 19:35:55.337 INFO kablam! 
Aug 11 19:35:55.337 INFO kablam! error[E0635]: unknown feature `rand`
Aug 11 19:35:55.337 INFO kablam!  --> src/lib.rs:5:12
Aug 11 19:35:55.337 INFO kablam!   |
Aug 11 19:35:55.337 INFO kablam! 5 | #![feature(rand)]
Aug 11 19:35:55.337 INFO kablam!   |            ^^^^
Aug 11 19:35:55.337 INFO kablam! 
Aug 11 19:35:55.387 INFO kablam! error: aborting due to previous error
Aug 11 19:35:55.387 INFO kablam! 
Aug 11 19:35:55.388 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 19:35:55.396 INFO kablam! error: Could not compile `avl_tree`.
Aug 11 19:35:55.396 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 19:35:55.652 INFO kablam! warning: variable does not need to be mutable
Aug 11 19:35:55.652 INFO kablam!    --> src/node.rs:368:9
Aug 11 19:35:55.652 INFO kablam!     |
Aug 11 19:35:55.653 INFO kablam! 368 |     let mut t = simple_tree(50);
Aug 11 19:35:55.653 INFO kablam!     |         ----^
Aug 11 19:35:55.653 INFO kablam!     |         |
Aug 11 19:35:55.653 INFO kablam!     |         help: remove this `mut`
Aug 11 19:35:55.653 INFO kablam!     |
Aug 11 19:35:55.653 INFO kablam!     = note: #[warn(unused_mut)] on by default
Aug 11 19:35:55.653 INFO kablam! 
Aug 11 19:35:55.740 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Aug 11 19:35:55.740 INFO kablam!  --> src/lib.rs:4:12
Aug 11 19:35:55.740 INFO kablam!   |
Aug 11 19:35:55.740 INFO kablam! 4 | #![feature(collections_bound)]
Aug 11 19:35:55.740 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Aug 11 19:35:55.741 INFO kablam!   |
Aug 11 19:35:55.741 INFO kablam!   = note: #[warn(stable_features)] on by default
Aug 11 19:35:55.741 INFO kablam! 
Aug 11 19:35:55.741 INFO kablam! error[E0635]: unknown feature `rand`
Aug 11 19:35:55.741 INFO kablam!  --> src/lib.rs:5:12
Aug 11 19:35:55.741 INFO kablam!   |
Aug 11 19:35:55.741 INFO kablam! 5 | #![feature(rand)]
Aug 11 19:35:55.741 INFO kablam!   |            ^^^^
Aug 11 19:35:55.741 INFO kablam! 
Aug 11 19:35:55.770 INFO kablam! error: aborting due to previous error
Aug 11 19:35:55.770 INFO kablam! 
Aug 11 19:35:55.770 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 19:35:55.782 INFO kablam! error: Could not compile `avl_tree`.
Aug 11 19:35:55.782 INFO kablam! 
Aug 11 19:35:55.782 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 19:35:55.784 INFO kablam! su: No module specific data is present
Aug 11 19:35:56.553 INFO running `"docker" "rm" "-f" "36022a20ba2075b33a83f6b2d18765326285179af9da3accd0a296e16ae81119"`
Aug 11 19:35:56.717 INFO blam! 36022a20ba2075b33a83f6b2d18765326285179af9da3accd0a296e16ae81119