Aug 30 19:57:00.456 INFO checking disjoint-set-0.0.2 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 19:57:00.456 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 19:57:00.456 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-1/try#2d477f9981361618ac78253c28051a66b6cea125:/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 +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 19:57:00.638 INFO blam! 3831575ab0924edc9c2c8b4cc27bc9f33715761843617942bd53d85c52bf5194
Aug 30 19:57:00.640 INFO running `"docker" "start" "-a" "3831575ab0924edc9c2c8b4cc27bc9f33715761843617942bd53d85c52bf5194"`
Aug 30 19:57:01.456 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Aug 30 19:57:01.964 INFO kablam! warning: unused import: `std::rc::Rc`
Aug 30 19:57:01.964 INFO kablam!  --> src/lib.rs:3:5
Aug 30 19:57:01.964 INFO kablam!   |
Aug 30 19:57:01.964 INFO kablam! 3 | use std::rc::Rc;
Aug 30 19:57:01.964 INFO kablam!   |     ^^^^^^^^^^^
Aug 30 19:57:01.964 INFO kablam!   |
Aug 30 19:57:01.964 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 30 19:57:01.964 INFO kablam! 
Aug 30 19:57:02.027 INFO kablam! warning: unused variable: `p`
Aug 30 19:57:02.027 INFO kablam!   --> src/lib.rs:37:18
Aug 30 19:57:02.027 INFO kablam!    |
Aug 30 19:57:02.027 INFO kablam! 37 |             Some(p) => return,
Aug 30 19:57:02.027 INFO kablam!    |                  ^ help: consider using `_p` instead
Aug 30 19:57:02.027 INFO kablam!    |
Aug 30 19:57:02.027 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 30 19:57:02.027 INFO kablam! 
Aug 30 19:57:02.030 INFO kablam! warning: variable does not need to be mutable
Aug 30 19:57:02.030 INFO kablam!   --> src/lib.rs:35:13
Aug 30 19:57:02.030 INFO kablam!    |
Aug 30 19:57:02.030 INFO kablam! 35 |         let mut len = &mut self.set_size;
Aug 30 19:57:02.030 INFO kablam!    |             ----^^^
Aug 30 19:57:02.030 INFO kablam!    |             |
Aug 30 19:57:02.030 INFO kablam!    |             help: remove this `mut`
Aug 30 19:57:02.030 INFO kablam!    |
Aug 30 19:57:02.030 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 19:57:02.030 INFO kablam! 
Aug 30 19:57:02.031 INFO kablam! warning: variable does not need to be mutable
Aug 30 19:57:02.031 INFO kablam!   --> src/lib.rs:53:13
Aug 30 19:57:02.031 INFO kablam!    |
Aug 30 19:57:02.031 INFO kablam! 53 |         let mut pos: usize;
Aug 30 19:57:02.031 INFO kablam!    |             ----^^^
Aug 30 19:57:02.031 INFO kablam!    |             |
Aug 30 19:57:02.031 INFO kablam!    |             help: remove this `mut`
Aug 30 19:57:02.031 INFO kablam! 
Aug 30 19:57:02.033 INFO kablam! warning: variant is never constructed: `Root`
Aug 30 19:57:02.033 INFO kablam!  --> src/lib.rs:7:5
Aug 30 19:57:02.033 INFO kablam!   |
Aug 30 19:57:02.033 INFO kablam! 7 |     Root(ValueType, u32),
Aug 30 19:57:02.033 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Aug 30 19:57:02.033 INFO kablam!   |
Aug 30 19:57:02.033 INFO kablam!   = note: #[warn(dead_code)] on by default
Aug 30 19:57:02.033 INFO kablam! 
Aug 30 19:57:02.033 INFO kablam! warning: variant is never constructed: `Link`
Aug 30 19:57:02.033 INFO kablam!  --> src/lib.rs:8:5
Aug 30 19:57:02.033 INFO kablam!   |
Aug 30 19:57:02.033 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Aug 30 19:57:02.033 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 30 19:57:02.033 INFO kablam! 
Aug 30 19:57:02.153 INFO kablam! warning: unused import: `std::rc::Rc`
Aug 30 19:57:02.153 INFO kablam!  --> src/lib.rs:3:5
Aug 30 19:57:02.153 INFO kablam!   |
Aug 30 19:57:02.153 INFO kablam! 3 | use std::rc::Rc;
Aug 30 19:57:02.153 INFO kablam!   |     ^^^^^^^^^^^
Aug 30 19:57:02.153 INFO kablam!   |
Aug 30 19:57:02.153 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 30 19:57:02.153 INFO kablam! 
Aug 30 19:57:02.209 INFO kablam! warning: unused variable: `p`
Aug 30 19:57:02.209 INFO kablam!   --> src/lib.rs:37:18
Aug 30 19:57:02.209 INFO kablam!    |
Aug 30 19:57:02.209 INFO kablam! 37 |             Some(p) => return,
Aug 30 19:57:02.209 INFO kablam!    |                  ^ help: consider using `_p` instead
Aug 30 19:57:02.209 INFO kablam!    |
Aug 30 19:57:02.209 INFO kablam!    = note: #[warn(unused_variables)] on by default
Aug 30 19:57:02.209 INFO kablam! 
Aug 30 19:57:02.213 INFO kablam! warning: variable does not need to be mutable
Aug 30 19:57:02.213 INFO kablam!   --> src/lib.rs:35:13
Aug 30 19:57:02.213 INFO kablam!    |
Aug 30 19:57:02.213 INFO kablam! 35 |         let mut len = &mut self.set_size;
Aug 30 19:57:02.213 INFO kablam!    |             ----^^^
Aug 30 19:57:02.214 INFO kablam!    |             |
Aug 30 19:57:02.214 INFO kablam!    |             help: remove this `mut`
Aug 30 19:57:02.214 INFO kablam!    |
Aug 30 19:57:02.214 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 19:57:02.214 INFO kablam! 
Aug 30 19:57:02.214 INFO kablam! warning: variable does not need to be mutable
Aug 30 19:57:02.214 INFO kablam!   --> src/lib.rs:53:13
Aug 30 19:57:02.214 INFO kablam!    |
Aug 30 19:57:02.214 INFO kablam! 53 |         let mut pos: usize;
Aug 30 19:57:02.214 INFO kablam!    |             ----^^^
Aug 30 19:57:02.214 INFO kablam!    |             |
Aug 30 19:57:02.214 INFO kablam!    |             help: remove this `mut`
Aug 30 19:57:02.214 INFO kablam! 
Aug 30 19:57:02.219 INFO kablam! warning: variant is never constructed: `Root`
Aug 30 19:57:02.219 INFO kablam!  --> src/lib.rs:7:5
Aug 30 19:57:02.219 INFO kablam!   |
Aug 30 19:57:02.219 INFO kablam! 7 |     Root(ValueType, u32),
Aug 30 19:57:02.219 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Aug 30 19:57:02.219 INFO kablam!   |
Aug 30 19:57:02.219 INFO kablam!   = note: #[warn(dead_code)] on by default
Aug 30 19:57:02.219 INFO kablam! 
Aug 30 19:57:02.219 INFO kablam! warning: variant is never constructed: `Link`
Aug 30 19:57:02.219 INFO kablam!  --> src/lib.rs:8:5
Aug 30 19:57:02.219 INFO kablam!   |
Aug 30 19:57:02.219 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Aug 30 19:57:02.219 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 30 19:57:02.219 INFO kablam! 
Aug 30 19:57:02.232 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 30 19:57:02.233 INFO kablam!    --> src/lib.rs:106:5
Aug 30 19:57:02.233 INFO kablam!     |
Aug 30 19:57:02.233 INFO kablam! 106 |     ds.union(1, 2);
Aug 30 19:57:02.233 INFO kablam!     |     ^^^^^^^^^^^^^^^
Aug 30 19:57:02.233 INFO kablam!     |
Aug 30 19:57:02.233 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Aug 30 19:57:02.233 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 30 19:57:02.233 INFO kablam! 
Aug 30 19:57:02.233 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 30 19:57:02.233 INFO kablam!    --> src/lib.rs:107:5
Aug 30 19:57:02.233 INFO kablam!     |
Aug 30 19:57:02.233 INFO kablam! 107 |     ds.union(2, 3);
Aug 30 19:57:02.233 INFO kablam!     |     ^^^^^^^^^^^^^^^
Aug 30 19:57:02.233 INFO kablam!     |
Aug 30 19:57:02.233 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 30 19:57:02.233 INFO kablam! 
Aug 30 19:57:02.233 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 30 19:57:02.233 INFO kablam!    --> src/lib.rs:118:5
Aug 30 19:57:02.233 INFO kablam!     |
Aug 30 19:57:02.233 INFO kablam! 118 |     ds.union(-1, 4);
Aug 30 19:57:02.233 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Aug 30 19:57:02.233 INFO kablam!     |
Aug 30 19:57:02.233 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 30 19:57:02.233 INFO kablam! 
Aug 30 19:57:02.234 INFO kablam! warning: unused `std::result::Result` which must be used
Aug 30 19:57:02.234 INFO kablam!    --> src/lib.rs:119:5
Aug 30 19:57:02.234 INFO kablam!     |
Aug 30 19:57:02.234 INFO kablam! 119 |     ds.union(2, 4);
Aug 30 19:57:02.234 INFO kablam!     |     ^^^^^^^^^^^^^^^
Aug 30 19:57:02.234 INFO kablam!     |
Aug 30 19:57:02.234 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Aug 30 19:57:02.234 INFO kablam! 
Aug 30 19:57:02.244 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Aug 30 19:57:02.246 INFO kablam! su: No module specific data is present
Aug 30 19:57:02.894 INFO running `"docker" "rm" "-f" "3831575ab0924edc9c2c8b4cc27bc9f33715761843617942bd53d85c52bf5194"`
Aug 30 19:57:02.991 INFO blam! 3831575ab0924edc9c2c8b4cc27bc9f33715761843617942bd53d85c52bf5194