Sep 02 16:17:51.320 INFO checking disjoint-set-0.0.2 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 02 16:17:51.320 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 16:17:51.320 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-3/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 16:17:51.617 INFO blam! 431e97c093ac434c6a251d67e194a3487d8e893081df86a775d8ba7c48102d6b
Sep 02 16:17:51.619 INFO running `"docker" "start" "-a" "431e97c093ac434c6a251d67e194a3487d8e893081df86a775d8ba7c48102d6b"`
Sep 02 16:17:52.494 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Sep 02 16:17:53.162 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 02 16:17:53.162 INFO kablam!  --> src/lib.rs:3:5
Sep 02 16:17:53.162 INFO kablam!   |
Sep 02 16:17:53.163 INFO kablam! 3 | use std::rc::Rc;
Sep 02 16:17:53.163 INFO kablam!   |     ^^^^^^^^^^^
Sep 02 16:17:53.163 INFO kablam!   |
Sep 02 16:17:53.163 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 02 16:17:53.163 INFO kablam! 
Sep 02 16:17:53.233 INFO kablam! warning: unused variable: `p`
Sep 02 16:17:53.233 INFO kablam!   --> src/lib.rs:37:18
Sep 02 16:17:53.233 INFO kablam!    |
Sep 02 16:17:53.233 INFO kablam! 37 |             Some(p) => return,
Sep 02 16:17:53.233 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 02 16:17:53.234 INFO kablam!    |
Sep 02 16:17:53.234 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 02 16:17:53.234 INFO kablam! 
Sep 02 16:17:53.237 INFO kablam! warning: variable does not need to be mutable
Sep 02 16:17:53.237 INFO kablam!   --> src/lib.rs:35:13
Sep 02 16:17:53.237 INFO kablam!    |
Sep 02 16:17:53.237 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 02 16:17:53.237 INFO kablam!    |             ----^^^
Sep 02 16:17:53.237 INFO kablam!    |             |
Sep 02 16:17:53.238 INFO kablam!    |             help: remove this `mut`
Sep 02 16:17:53.238 INFO kablam!    |
Sep 02 16:17:53.238 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 02 16:17:53.238 INFO kablam! 
Sep 02 16:17:53.238 INFO kablam! warning: variable does not need to be mutable
Sep 02 16:17:53.238 INFO kablam!   --> src/lib.rs:53:13
Sep 02 16:17:53.239 INFO kablam!    |
Sep 02 16:17:53.239 INFO kablam! 53 |         let mut pos: usize;
Sep 02 16:17:53.239 INFO kablam!    |             ----^^^
Sep 02 16:17:53.239 INFO kablam!    |             |
Sep 02 16:17:53.239 INFO kablam!    |             help: remove this `mut`
Sep 02 16:17:53.239 INFO kablam! 
Sep 02 16:17:53.241 INFO kablam! warning: variant is never constructed: `Root`
Sep 02 16:17:53.241 INFO kablam!  --> src/lib.rs:7:5
Sep 02 16:17:53.241 INFO kablam!   |
Sep 02 16:17:53.241 INFO kablam! 7 |     Root(ValueType, u32),
Sep 02 16:17:53.241 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 02 16:17:53.241 INFO kablam!   |
Sep 02 16:17:53.241 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 02 16:17:53.241 INFO kablam! 
Sep 02 16:17:53.241 INFO kablam! warning: variant is never constructed: `Link`
Sep 02 16:17:53.241 INFO kablam!  --> src/lib.rs:8:5
Sep 02 16:17:53.241 INFO kablam!   |
Sep 02 16:17:53.241 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 02 16:17:53.241 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 16:17:53.241 INFO kablam! 
Sep 02 16:17:53.319 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 02 16:17:53.319 INFO kablam!  --> src/lib.rs:3:5
Sep 02 16:17:53.319 INFO kablam!   |
Sep 02 16:17:53.319 INFO kablam! 3 | use std::rc::Rc;
Sep 02 16:17:53.319 INFO kablam!   |     ^^^^^^^^^^^
Sep 02 16:17:53.319 INFO kablam!   |
Sep 02 16:17:53.319 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 02 16:17:53.319 INFO kablam! 
Sep 02 16:17:53.407 INFO kablam! warning: unused variable: `p`
Sep 02 16:17:53.407 INFO kablam!   --> src/lib.rs:37:18
Sep 02 16:17:53.408 INFO kablam!    |
Sep 02 16:17:53.408 INFO kablam! 37 |             Some(p) => return,
Sep 02 16:17:53.408 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 02 16:17:53.408 INFO kablam!    |
Sep 02 16:17:53.408 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 02 16:17:53.408 INFO kablam! 
Sep 02 16:17:53.413 INFO kablam! warning: variable does not need to be mutable
Sep 02 16:17:53.413 INFO kablam!   --> src/lib.rs:35:13
Sep 02 16:17:53.413 INFO kablam!    |
Sep 02 16:17:53.413 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 02 16:17:53.413 INFO kablam!    |             ----^^^
Sep 02 16:17:53.413 INFO kablam!    |             |
Sep 02 16:17:53.413 INFO kablam!    |             help: remove this `mut`
Sep 02 16:17:53.413 INFO kablam!    |
Sep 02 16:17:53.413 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 02 16:17:53.413 INFO kablam! 
Sep 02 16:17:53.414 INFO kablam! warning: variable does not need to be mutable
Sep 02 16:17:53.414 INFO kablam!   --> src/lib.rs:53:13
Sep 02 16:17:53.414 INFO kablam!    |
Sep 02 16:17:53.414 INFO kablam! 53 |         let mut pos: usize;
Sep 02 16:17:53.414 INFO kablam!    |             ----^^^
Sep 02 16:17:53.414 INFO kablam!    |             |
Sep 02 16:17:53.414 INFO kablam!    |             help: remove this `mut`
Sep 02 16:17:53.414 INFO kablam! 
Sep 02 16:17:53.420 INFO kablam! warning: variant is never constructed: `Root`
Sep 02 16:17:53.420 INFO kablam!  --> src/lib.rs:7:5
Sep 02 16:17:53.420 INFO kablam!   |
Sep 02 16:17:53.420 INFO kablam! 7 |     Root(ValueType, u32),
Sep 02 16:17:53.420 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 02 16:17:53.420 INFO kablam!   |
Sep 02 16:17:53.420 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 02 16:17:53.420 INFO kablam! 
Sep 02 16:17:53.420 INFO kablam! warning: variant is never constructed: `Link`
Sep 02 16:17:53.420 INFO kablam!  --> src/lib.rs:8:5
Sep 02 16:17:53.420 INFO kablam!   |
Sep 02 16:17:53.420 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 02 16:17:53.420 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 02 16:17:53.421 INFO kablam! 
Sep 02 16:17:53.436 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 16:17:53.436 INFO kablam!    --> src/lib.rs:106:5
Sep 02 16:17:53.436 INFO kablam!     |
Sep 02 16:17:53.436 INFO kablam! 106 |     ds.union(1, 2);
Sep 02 16:17:53.436 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 02 16:17:53.436 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 02 16:17:53.437 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 16:17:53.437 INFO kablam! 
Sep 02 16:17:53.437 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 16:17:53.437 INFO kablam!    --> src/lib.rs:107:5
Sep 02 16:17:53.437 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam! 107 |     ds.union(2, 3);
Sep 02 16:17:53.437 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 02 16:17:53.437 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 16:17:53.437 INFO kablam! 
Sep 02 16:17:53.437 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 16:17:53.437 INFO kablam!    --> src/lib.rs:118:5
Sep 02 16:17:53.437 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam! 118 |     ds.union(-1, 4);
Sep 02 16:17:53.437 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Sep 02 16:17:53.437 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 16:17:53.437 INFO kablam! 
Sep 02 16:17:53.437 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 02 16:17:53.437 INFO kablam!    --> src/lib.rs:119:5
Sep 02 16:17:53.437 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam! 119 |     ds.union(2, 4);
Sep 02 16:17:53.437 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 02 16:17:53.437 INFO kablam!     |
Sep 02 16:17:53.437 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 02 16:17:53.437 INFO kablam! 
Sep 02 16:17:53.453 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
Sep 02 16:17:53.455 INFO kablam! su: No module specific data is present
Sep 02 16:17:53.785 INFO running `"docker" "rm" "-f" "431e97c093ac434c6a251d67e194a3487d8e893081df86a775d8ba7c48102d6b"`
Sep 02 16:17:53.885 INFO blam! 431e97c093ac434c6a251d67e194a3487d8e893081df86a775d8ba7c48102d6b