Aug 18 00:12:04.292 INFO checking disjoint-set-0.0.2 against try#a5d98b025f62ace80fe9d2a15781f900fc42515e for pr-53426
Aug 18 00:12:04.292 INFO running: cargo +a5d98b025f62ace80fe9d2a15781f900fc42515e-alt check --frozen --all --all-targets
Aug 18 00:12:04.292 INFO creating container for: cargo +a5d98b025f62ace80fe9d2a15781f900fc42515e-alt check --frozen --all --all-targets
Aug 18 00:12:04.292 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-53426/try#a5d98b025f62ace80fe9d2a15781f900fc42515e:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53426/worker-7/try#a5d98b025f62ace80fe9d2a15781f900fc42515e:/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 +a5d98b025f62ace80fe9d2a15781f900fc42515e-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 18 00:12:04.719 INFO blam! 02674d8e0b5bb131ebb5358f1138772bb0eca26c99a1da7c80be0cc2997cf6bc
Aug 18 00:12:04.726 INFO running `"docker" "start" "-a" "02674d8e0b5bb131ebb5358f1138772bb0eca26c99a1da7c80be0cc2997cf6bc"`
Aug 18 00:12:05.705 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Aug 18 00:12:06.488 INFO kablam! warning: unused import: `std::rc::Rc`
Aug 18 00:12:06.488 INFO kablam!  --> src/lib.rs:3:5
Aug 18 00:12:06.488 INFO kablam!   |
Aug 18 00:12:06.488 INFO kablam! 3 | use std::rc::Rc;
Aug 18 00:12:06.488 INFO kablam!   |     ^^^^^^^^^^^
Aug 18 00:12:06.488 INFO kablam!   |
Aug 18 00:12:06.488 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 18 00:12:06.488 INFO kablam! 
Aug 18 00:12:06.622 INFO kablam! warning: unused variable: `p`
Aug 18 00:12:06.622 INFO kablam!   --> src/lib.rs:37:18
Aug 18 00:12:06.622 INFO kablam!    |
Aug 18 00:12:06.622 INFO kablam! 37 |             Some(p) => return,
Aug 18 00:12:06.622 INFO kablam!    |                  ^ help: consider using `_p` instead
Aug 18 00:12:06.622 INFO kablam!    |
Aug 18 00:12:06.622 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 18 00:12:06.622 INFO kablam! 
Aug 18 00:12:06.638 INFO kablam! warning: variable does not need to be mutable
Aug 18 00:12:06.638 INFO kablam!   --> src/lib.rs:35:13
Aug 18 00:12:06.638 INFO kablam!    |
Aug 18 00:12:06.638 INFO kablam! 35 |         let mut len = &mut self.set_size;
Aug 18 00:12:06.638 INFO kablam!    |             ----^^^
Aug 18 00:12:06.639 INFO kablam!    |             |
Aug 18 00:12:06.639 INFO kablam!    |             help: remove this `mut`
Aug 18 00:12:06.642 INFO kablam!    |
Aug 18 00:12:06.643 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 18 00:12:06.643 INFO kablam! 
Aug 18 00:12:06.644 INFO kablam! warning: variable does not need to be mutable
Aug 18 00:12:06.644 INFO kablam!   --> src/lib.rs:53:13
Aug 18 00:12:06.644 INFO kablam!    |
Aug 18 00:12:06.644 INFO kablam! 53 |         let mut pos: usize;
Aug 18 00:12:06.644 INFO kablam!    |             ----^^^
Aug 18 00:12:06.644 INFO kablam!    |             |
Aug 18 00:12:06.644 INFO kablam!    |             help: remove this `mut`
Aug 18 00:12:06.644 INFO kablam! 
Aug 18 00:12:06.663 INFO kablam! warning: variant is never constructed: `Root`
Aug 18 00:12:06.663 INFO kablam!  --> src/lib.rs:7:5
Aug 18 00:12:06.663 INFO kablam!   |
Aug 18 00:12:06.663 INFO kablam! 7 |     Root(ValueType, u32),
Aug 18 00:12:06.663 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Aug 18 00:12:06.663 INFO kablam!   |
Aug 18 00:12:06.663 INFO kablam!   = note: #[warn(dead_code)] on by default
Aug 18 00:12:06.663 INFO kablam! 
Aug 18 00:12:06.663 INFO kablam! warning: variant is never constructed: `Link`
Aug 18 00:12:06.663 INFO kablam!  --> src/lib.rs:8:5
Aug 18 00:12:06.663 INFO kablam!   |
Aug 18 00:12:06.663 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Aug 18 00:12:06.663 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 18 00:12:06.663 INFO kablam! 
Aug 18 00:12:06.685 INFO kablam! warning: unused import: `std::rc::Rc`
Aug 18 00:12:06.685 INFO kablam!  --> src/lib.rs:3:5
Aug 18 00:12:06.685 INFO kablam!   |
Aug 18 00:12:06.685 INFO kablam! 3 | use std::rc::Rc;
Aug 18 00:12:06.685 INFO kablam!   |     ^^^^^^^^^^^
Aug 18 00:12:06.691 INFO kablam!   |
Aug 18 00:12:06.691 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 18 00:12:06.691 INFO kablam! 
Aug 18 00:12:06.697 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 18 00:12:06.697 INFO kablam!    --> src/lib.rs:106:5
Aug 18 00:12:06.697 INFO kablam!     |
Aug 18 00:12:06.697 INFO kablam! 106 |     ds.union(1, 2);
Aug 18 00:12:06.697 INFO kablam!     |     ^^^^^^^^^^^^^^^
Aug 18 00:12:06.703 INFO kablam!     |
Aug 18 00:12:06.703 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 18 00:12:06.703 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 18 00:12:06.703 INFO kablam! 
Aug 18 00:12:06.703 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 18 00:12:06.703 INFO kablam!    --> src/lib.rs:107:5
Aug 18 00:12:06.703 INFO kablam!     |
Aug 18 00:12:06.703 INFO kablam! 107 |     ds.union(2, 3);
Aug 18 00:12:06.703 INFO kablam!     |     ^^^^^^^^^^^^^^^
Aug 18 00:12:06.704 INFO kablam!     |
Aug 18 00:12:06.704 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 18 00:12:06.704 INFO kablam! 
Aug 18 00:12:06.704 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 18 00:12:06.704 INFO kablam!    --> src/lib.rs:118:5
Aug 18 00:12:06.704 INFO kablam!     |
Aug 18 00:12:06.704 INFO kablam! 118 |     ds.union(-1, 4);
Aug 18 00:12:06.704 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Aug 18 00:12:06.704 INFO kablam!     |
Aug 18 00:12:06.704 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 18 00:12:06.704 INFO kablam! 
Aug 18 00:12:06.704 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 18 00:12:06.704 INFO kablam!    --> src/lib.rs:119:5
Aug 18 00:12:06.704 INFO kablam!     |
Aug 18 00:12:06.704 INFO kablam! 119 |     ds.union(2, 4);
Aug 18 00:12:06.704 INFO kablam!     |     ^^^^^^^^^^^^^^^
Aug 18 00:12:06.704 INFO kablam!     |
Aug 18 00:12:06.704 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 18 00:12:06.704 INFO kablam! 
Aug 18 00:12:06.852 INFO kablam! warning: unused variable: `p`
Aug 18 00:12:06.852 INFO kablam!   --> src/lib.rs:37:18
Aug 18 00:12:06.852 INFO kablam!    |
Aug 18 00:12:06.852 INFO kablam! 37 |             Some(p) => return,
Aug 18 00:12:06.852 INFO kablam!    |                  ^ help: consider using `_p` instead
Aug 18 00:12:06.852 INFO kablam!    |
Aug 18 00:12:06.852 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 18 00:12:06.852 INFO kablam! 
Aug 18 00:12:06.860 INFO kablam! warning: variable does not need to be mutable
Aug 18 00:12:06.860 INFO kablam!   --> src/lib.rs:35:13
Aug 18 00:12:06.860 INFO kablam!    |
Aug 18 00:12:06.860 INFO kablam! 35 |         let mut len = &mut self.set_size;
Aug 18 00:12:06.860 INFO kablam!    |             ----^^^
Aug 18 00:12:06.860 INFO kablam!    |             |
Aug 18 00:12:06.860 INFO kablam!    |             help: remove this `mut`
Aug 18 00:12:06.860 INFO kablam!    |
Aug 18 00:12:06.860 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 18 00:12:06.860 INFO kablam! 
Aug 18 00:12:06.861 INFO kablam! warning: variable does not need to be mutable
Aug 18 00:12:06.861 INFO kablam!   --> src/lib.rs:53:13
Aug 18 00:12:06.861 INFO kablam!    |
Aug 18 00:12:06.861 INFO kablam! 53 |         let mut pos: usize;
Aug 18 00:12:06.861 INFO kablam!    |             ----^^^
Aug 18 00:12:06.861 INFO kablam!    |             |
Aug 18 00:12:06.861 INFO kablam!    |             help: remove this `mut`
Aug 18 00:12:06.861 INFO kablam! 
Aug 18 00:12:06.865 INFO kablam! warning: variant is never constructed: `Root`
Aug 18 00:12:06.865 INFO kablam!  --> src/lib.rs:7:5
Aug 18 00:12:06.865 INFO kablam!   |
Aug 18 00:12:06.865 INFO kablam! 7 |     Root(ValueType, u32),
Aug 18 00:12:06.865 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Aug 18 00:12:06.865 INFO kablam!   |
Aug 18 00:12:06.865 INFO kablam!   = note: #[warn(dead_code)] on by default
Aug 18 00:12:06.865 INFO kablam! 
Aug 18 00:12:06.866 INFO kablam! warning: variant is never constructed: `Link`
Aug 18 00:12:06.866 INFO kablam!  --> src/lib.rs:8:5
Aug 18 00:12:06.866 INFO kablam!   |
Aug 18 00:12:06.866 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Aug 18 00:12:06.866 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 18 00:12:06.866 INFO kablam! 
Aug 18 00:12:06.936 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Aug 18 00:12:06.950 INFO kablam! su: No module specific data is present
Aug 18 00:12:07.477 INFO running `"docker" "rm" "-f" "02674d8e0b5bb131ebb5358f1138772bb0eca26c99a1da7c80be0cc2997cf6bc"`
Aug 18 00:12:07.658 INFO blam! 02674d8e0b5bb131ebb5358f1138772bb0eca26c99a1da7c80be0cc2997cf6bc