Sep 14 17:31:15.138 INFO checking disjoint-set-0.0.2 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 17:31:15.138 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 17:31:15.138 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-6/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 17:31:15.272 INFO blam! 7940f942cdca672c8a83484f7dbb8ee6563159fb93003c8571a2473fda83bb1d
Sep 14 17:31:15.273 INFO running `"docker" "start" "-a" "7940f942cdca672c8a83484f7dbb8ee6563159fb93003c8571a2473fda83bb1d"`
Sep 14 17:31:16.244 INFO kablam! usermod: no changes
Sep 14 17:31:16.271 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Sep 14 17:31:16.472 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 14 17:31:16.472 INFO kablam!  --> src/lib.rs:3:5
Sep 14 17:31:16.472 INFO kablam!   |
Sep 14 17:31:16.472 INFO kablam! 3 | use std::rc::Rc;
Sep 14 17:31:16.472 INFO kablam!   |     ^^^^^^^^^^^
Sep 14 17:31:16.472 INFO kablam!   |
Sep 14 17:31:16.472 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 14 17:31:16.472 INFO kablam! 
Sep 14 17:31:16.497 INFO kablam! warning: unused variable: `p`
Sep 14 17:31:16.497 INFO kablam!   --> src/lib.rs:37:18
Sep 14 17:31:16.497 INFO kablam!    |
Sep 14 17:31:16.497 INFO kablam! 37 |             Some(p) => return,
Sep 14 17:31:16.497 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 14 17:31:16.497 INFO kablam!    |
Sep 14 17:31:16.497 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 14 17:31:16.497 INFO kablam! 
Sep 14 17:31:16.515 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.515 INFO kablam!   --> src/lib.rs:35:13
Sep 14 17:31:16.515 INFO kablam!    |
Sep 14 17:31:16.515 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 14 17:31:16.515 INFO kablam!    |             ----^^^
Sep 14 17:31:16.515 INFO kablam!    |             |
Sep 14 17:31:16.515 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.515 INFO kablam!    |
Sep 14 17:31:16.515 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 17:31:16.515 INFO kablam! 
Sep 14 17:31:16.515 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.515 INFO kablam!   --> src/lib.rs:53:13
Sep 14 17:31:16.515 INFO kablam!    |
Sep 14 17:31:16.515 INFO kablam! 53 |         let mut pos: usize;
Sep 14 17:31:16.515 INFO kablam!    |             ----^^^
Sep 14 17:31:16.515 INFO kablam!    |             |
Sep 14 17:31:16.515 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.515 INFO kablam! 
Sep 14 17:31:16.515 INFO kablam! warning: variant is never constructed: `Root`
Sep 14 17:31:16.515 INFO kablam!  --> src/lib.rs:7:5
Sep 14 17:31:16.515 INFO kablam!   |
Sep 14 17:31:16.515 INFO kablam! 7 |     Root(ValueType, u32),
Sep 14 17:31:16.515 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.515 INFO kablam!   |
Sep 14 17:31:16.515 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 14 17:31:16.515 INFO kablam! 
Sep 14 17:31:16.515 INFO kablam! warning: variant is never constructed: `Link`
Sep 14 17:31:16.515 INFO kablam!  --> src/lib.rs:8:5
Sep 14 17:31:16.515 INFO kablam!   |
Sep 14 17:31:16.515 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 14 17:31:16.515 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.515 INFO kablam! 
Sep 14 17:31:16.590 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 14 17:31:16.590 INFO kablam!  --> src/lib.rs:3:5
Sep 14 17:31:16.590 INFO kablam!   |
Sep 14 17:31:16.590 INFO kablam! 3 | use std::rc::Rc;
Sep 14 17:31:16.590 INFO kablam!   |     ^^^^^^^^^^^
Sep 14 17:31:16.591 INFO kablam!   |
Sep 14 17:31:16.591 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 14 17:31:16.591 INFO kablam! 
Sep 14 17:31:16.591 INFO kablam! warning: unused variable: `p`
Sep 14 17:31:16.591 INFO kablam!   --> src/lib.rs:37:18
Sep 14 17:31:16.591 INFO kablam!    |
Sep 14 17:31:16.591 INFO kablam! 37 |             Some(p) => return,
Sep 14 17:31:16.591 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 14 17:31:16.591 INFO kablam!    |
Sep 14 17:31:16.591 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 14 17:31:16.591 INFO kablam! 
Sep 14 17:31:16.591 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.591 INFO kablam!   --> src/lib.rs:35:13
Sep 14 17:31:16.591 INFO kablam!    |
Sep 14 17:31:16.591 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 14 17:31:16.591 INFO kablam!    |             ----^^^
Sep 14 17:31:16.591 INFO kablam!    |             |
Sep 14 17:31:16.591 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.591 INFO kablam!    |
Sep 14 17:31:16.591 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 17:31:16.591 INFO kablam! 
Sep 14 17:31:16.591 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.591 INFO kablam!   --> src/lib.rs:53:13
Sep 14 17:31:16.591 INFO kablam!    |
Sep 14 17:31:16.591 INFO kablam! 53 |         let mut pos: usize;
Sep 14 17:31:16.591 INFO kablam!    |             ----^^^
Sep 14 17:31:16.591 INFO kablam!    |             |
Sep 14 17:31:16.591 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.591 INFO kablam! 
Sep 14 17:31:16.591 INFO kablam! warning: variant is never constructed: `Root`
Sep 14 17:31:16.591 INFO kablam!  --> src/lib.rs:7:5
Sep 14 17:31:16.591 INFO kablam!   |
Sep 14 17:31:16.591 INFO kablam! 7 |     Root(ValueType, u32),
Sep 14 17:31:16.591 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.591 INFO kablam!   |
Sep 14 17:31:16.591 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 14 17:31:16.591 INFO kablam! 
Sep 14 17:31:16.591 INFO kablam! warning: variant is never constructed: `Link`
Sep 14 17:31:16.591 INFO kablam!  --> src/lib.rs:8:5
Sep 14 17:31:16.591 INFO kablam!   |
Sep 14 17:31:16.591 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 14 17:31:16.591 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.591 INFO kablam! 
Sep 14 17:31:16.601 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.601 INFO kablam!    --> src/lib.rs:106:5
Sep 14 17:31:16.601 INFO kablam!     |
Sep 14 17:31:16.601 INFO kablam! 106 |     ds.union(1, 2);
Sep 14 17:31:16.601 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 14 17:31:16.601 INFO kablam!     |
Sep 14 17:31:16.601 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 14 17:31:16.601 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.601 INFO kablam! 
Sep 14 17:31:16.601 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.601 INFO kablam!    --> src/lib.rs:107:5
Sep 14 17:31:16.601 INFO kablam!     |
Sep 14 17:31:16.601 INFO kablam! 107 |     ds.union(2, 3);
Sep 14 17:31:16.601 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 14 17:31:16.601 INFO kablam!     |
Sep 14 17:31:16.601 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.601 INFO kablam! 
Sep 14 17:31:16.602 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.602 INFO kablam!    --> src/lib.rs:118:5
Sep 14 17:31:16.602 INFO kablam!     |
Sep 14 17:31:16.602 INFO kablam! 118 |     ds.union(-1, 4);
Sep 14 17:31:16.602 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Sep 14 17:31:16.602 INFO kablam!     |
Sep 14 17:31:16.602 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.602 INFO kablam! 
Sep 14 17:31:16.602 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.602 INFO kablam!    --> src/lib.rs:119:5
Sep 14 17:31:16.602 INFO kablam!     |
Sep 14 17:31:16.602 INFO kablam! 119 |     ds.union(2, 4);
Sep 14 17:31:16.602 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 14 17:31:16.602 INFO kablam!     |
Sep 14 17:31:16.602 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.602 INFO kablam! 
Sep 14 17:31:16.613 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
Sep 14 17:31:16.616 INFO kablam! su: No module specific data is present
Sep 14 17:31:17.355 INFO running `"docker" "rm" "-f" "7940f942cdca672c8a83484f7dbb8ee6563159fb93003c8571a2473fda83bb1d"`
Sep 14 17:31:17.555 INFO blam! 7940f942cdca672c8a83484f7dbb8ee6563159fb93003c8571a2473fda83bb1d