Sep 21 13:11:53.316 INFO checking avl_tree-0.2.0 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 13:11:53.316 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 13:11:53.317 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-1/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 13:11:53.537 INFO blam! c0ed05d525826176c6b1441bb66d342d64a0f47082f5818834585ed101687cff
Sep 21 13:11:53.540 INFO running `"docker" "start" "-a" "c0ed05d525826176c6b1441bb66d342d64a0f47082f5818834585ed101687cff"`
Sep 21 13:11:55.366 INFO kablam! usermod: no changes
Sep 21 13:11:55.506 INFO kablam!     Checking avl_tree v0.2.0 (/source)
Sep 21 13:11:56.454 INFO kablam! warning: unnecessary parentheses around function argument
Sep 21 13:11:56.454 INFO kablam!    --> src/node.rs:252:20
Sep 21 13:11:56.454 INFO kablam!     |
Sep 21 13:11:56.454 INFO kablam! 252 |         t = insert((x as u64),1337+x-1,t)
Sep 21 13:11:56.454 INFO kablam!     |                    ^^^^^^^^^^ help: remove these parentheses
Sep 21 13:11:56.454 INFO kablam!     |
Sep 21 13:11:56.454 INFO kablam!     = note: #[warn(unused_parens)] on by default
Sep 21 13:11:56.454 INFO kablam! 
Sep 21 13:11:56.458 INFO kablam! warning: unused imports: `max`, `min`, `to_string`
Sep 21 13:11:56.458 INFO kablam!  --> src/tree.rs:5:33
Sep 21 13:11:56.458 INFO kablam!   |
Sep 21 13:11:56.458 INFO kablam! 5 | use node::{insert,delete,search,min,max,is_avl_tree, to_string, min_pair, max_pair};
Sep 21 13:11:56.458 INFO kablam!   |                                 ^^^ ^^^              ^^^^^^^^^
Sep 21 13:11:56.458 INFO kablam!   |
Sep 21 13:11:56.458 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 13:11:56.458 INFO kablam! 
Sep 21 13:11:56.550 INFO kablam! warning: unnecessary parentheses around function argument
Sep 21 13:11:56.550 INFO kablam!    --> src/node.rs:252:20
Sep 21 13:11:56.550 INFO kablam!     |
Sep 21 13:11:56.550 INFO kablam! 252 |         t = insert((x as u64),1337+x-1,t)
Sep 21 13:11:56.550 INFO kablam!     |                    ^^^^^^^^^^ help: remove these parentheses
Sep 21 13:11:56.550 INFO kablam!     |
Sep 21 13:11:56.550 INFO kablam!     = note: #[warn(unused_parens)] on by default
Sep 21 13:11:56.550 INFO kablam! 
Sep 21 13:11:56.558 INFO kablam! warning: unused imports: `max`, `min`, `to_string`
Sep 21 13:11:56.558 INFO kablam!  --> src/tree.rs:5:33
Sep 21 13:11:56.558 INFO kablam!   |
Sep 21 13:11:56.558 INFO kablam! 5 | use node::{insert,delete,search,min,max,is_avl_tree, to_string, min_pair, max_pair};
Sep 21 13:11:56.558 INFO kablam!   |                                 ^^^ ^^^              ^^^^^^^^^
Sep 21 13:11:56.558 INFO kablam!   |
Sep 21 13:11:56.558 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 13:11:56.558 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `contains`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:145:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 145 | fn contains<K:Ord,D>(key: &K, root: &Box<Node<K,D>> ) -> bool  {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam!     = note: #[warn(dead_code)] on by default
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `min`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:175:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 175 | pub fn min<K:Ord,D>(root: &Box<Node<K,D>>) -> &D {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `max`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:180:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 180 | pub fn max<K:Ord,D>(root: &Box<Node<K,D>>) -> &D {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `simple_tree`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:249:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 249 | fn simple_tree(size: i32) -> Box<Node<u64,i32>> {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `is_sorted_left`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:257:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 257 | fn is_sorted_left<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `is_sorted_right`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:261:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 261 | fn is_sorted_right<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `is_avl_node`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:265:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.830 INFO kablam! 265 | fn is_avl_node<K:Ord,D>(node: &Box<Node<K,D>>) -> bool {
Sep 21 13:11:56.830 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.830 INFO kablam! 
Sep 21 13:11:56.830 INFO kablam! warning: function is never used: `is_avl_tree`
Sep 21 13:11:56.830 INFO kablam!    --> src/node.rs:271:1
Sep 21 13:11:56.830 INFO kablam!     |
Sep 21 13:11:56.831 INFO kablam! 271 | pub fn is_avl_tree<K:Ord,D>(root: &Option<Box<Node<K,D>>>) -> bool {
Sep 21 13:11:56.831 INFO kablam!     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.831 INFO kablam! 
Sep 21 13:11:56.831 INFO kablam! warning: method is never used: `test_avl_tree`
Sep 21 13:11:56.831 INFO kablam!    --> src/tree.rs:183:5
Sep 21 13:11:56.831 INFO kablam!     |
Sep 21 13:11:56.831 INFO kablam! 183 |     fn test_avl_tree(&self) -> bool {
Sep 21 13:11:56.831 INFO kablam!     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.831 INFO kablam! 
Sep 21 13:11:56.832 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 21 13:11:56.832 INFO kablam!  --> src/lib.rs:4:12
Sep 21 13:11:56.832 INFO kablam!   |
Sep 21 13:11:56.832 INFO kablam! 4 | #![feature(collections_bound)]
Sep 21 13:11:56.832 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 21 13:11:56.832 INFO kablam!   |
Sep 21 13:11:56.832 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 13:11:56.832 INFO kablam! 
Sep 21 13:11:56.834 INFO kablam! error[E0635]: unknown feature `rand`
Sep 21 13:11:56.834 INFO kablam!  --> src/lib.rs:5:12
Sep 21 13:11:56.834 INFO kablam!   |
Sep 21 13:11:56.834 INFO kablam! 5 | #![feature(rand)]
Sep 21 13:11:56.834 INFO kablam!   |            ^^^^
Sep 21 13:11:56.834 INFO kablam! 
Sep 21 13:11:56.874 INFO kablam! error: aborting due to previous error
Sep 21 13:11:56.874 INFO kablam! 
Sep 21 13:11:56.874 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 13:11:56.890 INFO kablam! error: Could not compile `avl_tree`.
Sep 21 13:11:56.891 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 21 13:11:57.079 INFO kablam! warning: variable does not need to be mutable
Sep 21 13:11:57.079 INFO kablam!    --> src/node.rs:368:9
Sep 21 13:11:57.079 INFO kablam!     |
Sep 21 13:11:57.079 INFO kablam! 368 |     let mut t = simple_tree(50);
Sep 21 13:11:57.079 INFO kablam!     |         ----^
Sep 21 13:11:57.079 INFO kablam!     |         |
Sep 21 13:11:57.079 INFO kablam!     |         help: remove this `mut`
Sep 21 13:11:57.079 INFO kablam!     |
Sep 21 13:11:57.079 INFO kablam!     = note: #[warn(unused_mut)] on by default
Sep 21 13:11:57.079 INFO kablam! 
Sep 21 13:11:57.115 INFO kablam! warning: the feature `collections_bound` has been stable since 1.17.0 and no longer requires an attribute to enable
Sep 21 13:11:57.115 INFO kablam!  --> src/lib.rs:4:12
Sep 21 13:11:57.115 INFO kablam!   |
Sep 21 13:11:57.115 INFO kablam! 4 | #![feature(collections_bound)]
Sep 21 13:11:57.115 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 21 13:11:57.116 INFO kablam!   |
Sep 21 13:11:57.116 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 21 13:11:57.116 INFO kablam! 
Sep 21 13:11:57.116 INFO kablam! error[E0635]: unknown feature `rand`
Sep 21 13:11:57.116 INFO kablam!  --> src/lib.rs:5:12
Sep 21 13:11:57.116 INFO kablam!   |
Sep 21 13:11:57.117 INFO kablam! 5 | #![feature(rand)]
Sep 21 13:11:57.117 INFO kablam!   |            ^^^^
Sep 21 13:11:57.117 INFO kablam! 
Sep 21 13:11:57.134 INFO kablam! error: aborting due to previous error
Sep 21 13:11:57.134 INFO kablam! 
Sep 21 13:11:57.134 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 21 13:11:57.144 INFO kablam! error: Could not compile `avl_tree`.
Sep 21 13:11:57.144 INFO kablam! 
Sep 21 13:11:57.144 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 13:11:57.170 INFO kablam! su: No module specific data is present
Sep 21 13:11:58.379 INFO running `"docker" "rm" "-f" "c0ed05d525826176c6b1441bb66d342d64a0f47082f5818834585ed101687cff"`
Sep 21 13:11:58.494 INFO blam! c0ed05d525826176c6b1441bb66d342d64a0f47082f5818834585ed101687cff