Sep 04 19:37:43.031 INFO checking disjoint-set-0.0.2 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 19:37:43.031 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 19:37:43.031 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 19:37:43.219 INFO blam! 0bc6f45802c8e5bf12b2843d5cbb131fee35cf931a8009449c69f0e55a466f92
Sep 04 19:37:43.221 INFO running `"docker" "start" "-a" "0bc6f45802c8e5bf12b2843d5cbb131fee35cf931a8009449c69f0e55a466f92"`
Sep 04 19:37:43.903 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Sep 04 19:37:44.396 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 04 19:37:44.397 INFO kablam!  --> src/lib.rs:3:5
Sep 04 19:37:44.397 INFO kablam!   |
Sep 04 19:37:44.397 INFO kablam! 3 | use std::rc::Rc;
Sep 04 19:37:44.397 INFO kablam!   |     ^^^^^^^^^^^
Sep 04 19:37:44.397 INFO kablam!   |
Sep 04 19:37:44.397 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 04 19:37:44.397 INFO kablam! 
Sep 04 19:37:44.476 INFO kablam! warning: unused variable: `p`
Sep 04 19:37:44.476 INFO kablam!   --> src/lib.rs:37:18
Sep 04 19:37:44.476 INFO kablam!    |
Sep 04 19:37:44.476 INFO kablam! 37 |             Some(p) => return,
Sep 04 19:37:44.476 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 04 19:37:44.476 INFO kablam!    |
Sep 04 19:37:44.476 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 04 19:37:44.476 INFO kablam! 
Sep 04 19:37:44.482 INFO kablam! warning: variable does not need to be mutable
Sep 04 19:37:44.482 INFO kablam!   --> src/lib.rs:35:13
Sep 04 19:37:44.482 INFO kablam!    |
Sep 04 19:37:44.482 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 04 19:37:44.482 INFO kablam!    |             ----^^^
Sep 04 19:37:44.482 INFO kablam!    |             |
Sep 04 19:37:44.482 INFO kablam!    |             help: remove this `mut`
Sep 04 19:37:44.482 INFO kablam!    |
Sep 04 19:37:44.483 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 04 19:37:44.483 INFO kablam! 
Sep 04 19:37:44.483 INFO kablam! warning: variable does not need to be mutable
Sep 04 19:37:44.483 INFO kablam!   --> src/lib.rs:53:13
Sep 04 19:37:44.483 INFO kablam!    |
Sep 04 19:37:44.483 INFO kablam! 53 |         let mut pos: usize;
Sep 04 19:37:44.483 INFO kablam!    |             ----^^^
Sep 04 19:37:44.484 INFO kablam!    |             |
Sep 04 19:37:44.484 INFO kablam!    |             help: remove this `mut`
Sep 04 19:37:44.484 INFO kablam! 
Sep 04 19:37:44.487 INFO kablam! warning: variant is never constructed: `Root`
Sep 04 19:37:44.487 INFO kablam!  --> src/lib.rs:7:5
Sep 04 19:37:44.487 INFO kablam!   |
Sep 04 19:37:44.487 INFO kablam! 7 |     Root(ValueType, u32),
Sep 04 19:37:44.487 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 04 19:37:44.487 INFO kablam!   |
Sep 04 19:37:44.487 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 04 19:37:44.487 INFO kablam! 
Sep 04 19:37:44.487 INFO kablam! warning: variant is never constructed: `Link`
Sep 04 19:37:44.487 INFO kablam!  --> src/lib.rs:8:5
Sep 04 19:37:44.487 INFO kablam!   |
Sep 04 19:37:44.487 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 04 19:37:44.487 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 04 19:37:44.487 INFO kablam! 
Sep 04 19:37:44.524 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 04 19:37:44.524 INFO kablam!  --> src/lib.rs:3:5
Sep 04 19:37:44.524 INFO kablam!   |
Sep 04 19:37:44.524 INFO kablam! 3 | use std::rc::Rc;
Sep 04 19:37:44.524 INFO kablam!   |     ^^^^^^^^^^^
Sep 04 19:37:44.524 INFO kablam!   |
Sep 04 19:37:44.524 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 04 19:37:44.524 INFO kablam! 
Sep 04 19:37:44.603 INFO kablam! warning: unused variable: `p`
Sep 04 19:37:44.603 INFO kablam!   --> src/lib.rs:37:18
Sep 04 19:37:44.603 INFO kablam!    |
Sep 04 19:37:44.603 INFO kablam! 37 |             Some(p) => return,
Sep 04 19:37:44.603 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 04 19:37:44.603 INFO kablam!    |
Sep 04 19:37:44.603 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 04 19:37:44.603 INFO kablam! 
Sep 04 19:37:44.608 INFO kablam! warning: variable does not need to be mutable
Sep 04 19:37:44.608 INFO kablam!   --> src/lib.rs:35:13
Sep 04 19:37:44.608 INFO kablam!    |
Sep 04 19:37:44.608 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 04 19:37:44.608 INFO kablam!    |             ----^^^
Sep 04 19:37:44.608 INFO kablam!    |             |
Sep 04 19:37:44.608 INFO kablam!    |             help: remove this `mut`
Sep 04 19:37:44.608 INFO kablam!    |
Sep 04 19:37:44.608 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 04 19:37:44.608 INFO kablam! 
Sep 04 19:37:44.608 INFO kablam! warning: variable does not need to be mutable
Sep 04 19:37:44.608 INFO kablam!   --> src/lib.rs:53:13
Sep 04 19:37:44.609 INFO kablam!    |
Sep 04 19:37:44.609 INFO kablam! 53 |         let mut pos: usize;
Sep 04 19:37:44.609 INFO kablam!    |             ----^^^
Sep 04 19:37:44.609 INFO kablam!    |             |
Sep 04 19:37:44.609 INFO kablam!    |             help: remove this `mut`
Sep 04 19:37:44.609 INFO kablam! 
Sep 04 19:37:44.614 INFO kablam! warning: variant is never constructed: `Root`
Sep 04 19:37:44.614 INFO kablam!  --> src/lib.rs:7:5
Sep 04 19:37:44.614 INFO kablam!   |
Sep 04 19:37:44.614 INFO kablam! 7 |     Root(ValueType, u32),
Sep 04 19:37:44.614 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 04 19:37:44.614 INFO kablam!   |
Sep 04 19:37:44.614 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 04 19:37:44.614 INFO kablam! 
Sep 04 19:37:44.614 INFO kablam! warning: variant is never constructed: `Link`
Sep 04 19:37:44.614 INFO kablam!  --> src/lib.rs:8:5
Sep 04 19:37:44.614 INFO kablam!   |
Sep 04 19:37:44.614 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 04 19:37:44.614 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 04 19:37:44.614 INFO kablam! 
Sep 04 19:37:44.634 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 04 19:37:44.634 INFO kablam!    --> src/lib.rs:106:5
Sep 04 19:37:44.634 INFO kablam!     |
Sep 04 19:37:44.634 INFO kablam! 106 |     ds.union(1, 2);
Sep 04 19:37:44.634 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 04 19:37:44.634 INFO kablam!     |
Sep 04 19:37:44.634 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 19:37:44.634 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 04 19:37:44.634 INFO kablam! 
Sep 04 19:37:44.634 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 04 19:37:44.634 INFO kablam!    --> src/lib.rs:107:5
Sep 04 19:37:44.635 INFO kablam!     |
Sep 04 19:37:44.635 INFO kablam! 107 |     ds.union(2, 3);
Sep 04 19:37:44.635 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 04 19:37:44.635 INFO kablam!     |
Sep 04 19:37:44.635 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 04 19:37:44.635 INFO kablam! 
Sep 04 19:37:44.635 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 04 19:37:44.635 INFO kablam!    --> src/lib.rs:118:5
Sep 04 19:37:44.635 INFO kablam!     |
Sep 04 19:37:44.635 INFO kablam! 118 |     ds.union(-1, 4);
Sep 04 19:37:44.635 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Sep 04 19:37:44.635 INFO kablam!     |
Sep 04 19:37:44.635 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 04 19:37:44.635 INFO kablam! 
Sep 04 19:37:44.635 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 04 19:37:44.635 INFO kablam!    --> src/lib.rs:119:5
Sep 04 19:37:44.635 INFO kablam!     |
Sep 04 19:37:44.635 INFO kablam! 119 |     ds.union(2, 4);
Sep 04 19:37:44.635 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 04 19:37:44.635 INFO kablam!     |
Sep 04 19:37:44.635 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 04 19:37:44.635 INFO kablam! 
Sep 04 19:37:44.651 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
Sep 04 19:37:44.653 INFO kablam! su: No module specific data is present
Sep 04 19:37:45.121 INFO running `"docker" "rm" "-f" "0bc6f45802c8e5bf12b2843d5cbb131fee35cf931a8009449c69f0e55a466f92"`
Sep 04 19:37:45.231 INFO blam! 0bc6f45802c8e5bf12b2843d5cbb131fee35cf931a8009449c69f0e55a466f92