Sep 14 17:31:14.233 INFO checking disjoint-set-0.0.2 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 17:31:14.233 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 17:31:14.234 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-5/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 17:31:14.379 INFO blam! 6799df99932925a293582eb7d7bad11ed001e928aa96d861ba7797e3d6e549dc
Sep 14 17:31:14.383 INFO running `"docker" "start" "-a" "6799df99932925a293582eb7d7bad11ed001e928aa96d861ba7797e3d6e549dc"`
Sep 14 17:31:15.807 INFO kablam! usermod: no changes
Sep 14 17:31:15.825 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Sep 14 17:31:16.012 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 14 17:31:16.012 INFO kablam!  --> src/lib.rs:3:5
Sep 14 17:31:16.012 INFO kablam!   |
Sep 14 17:31:16.012 INFO kablam! 3 | use std::rc::Rc;
Sep 14 17:31:16.012 INFO kablam!   |     ^^^^^^^^^^^
Sep 14 17:31:16.012 INFO kablam!   |
Sep 14 17:31:16.012 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 14 17:31:16.012 INFO kablam! 
Sep 14 17:31:16.046 INFO kablam! warning: unused variable: `p`
Sep 14 17:31:16.046 INFO kablam!   --> src/lib.rs:37:18
Sep 14 17:31:16.046 INFO kablam!    |
Sep 14 17:31:16.046 INFO kablam! 37 |             Some(p) => return,
Sep 14 17:31:16.046 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 14 17:31:16.046 INFO kablam!    |
Sep 14 17:31:16.046 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 14 17:31:16.046 INFO kablam! 
Sep 14 17:31:16.049 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.049 INFO kablam!   --> src/lib.rs:35:13
Sep 14 17:31:16.049 INFO kablam!    |
Sep 14 17:31:16.049 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 14 17:31:16.049 INFO kablam!    |             ----^^^
Sep 14 17:31:16.049 INFO kablam!    |             |
Sep 14 17:31:16.049 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.049 INFO kablam!    |
Sep 14 17:31:16.049 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 17:31:16.049 INFO kablam! 
Sep 14 17:31:16.049 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.049 INFO kablam!   --> src/lib.rs:53:13
Sep 14 17:31:16.049 INFO kablam!    |
Sep 14 17:31:16.049 INFO kablam! 53 |         let mut pos: usize;
Sep 14 17:31:16.049 INFO kablam!    |             ----^^^
Sep 14 17:31:16.049 INFO kablam!    |             |
Sep 14 17:31:16.049 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.049 INFO kablam! 
Sep 14 17:31:16.051 INFO kablam! warning: variant is never constructed: `Root`
Sep 14 17:31:16.051 INFO kablam!  --> src/lib.rs:7:5
Sep 14 17:31:16.051 INFO kablam!   |
Sep 14 17:31:16.051 INFO kablam! 7 |     Root(ValueType, u32),
Sep 14 17:31:16.051 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.051 INFO kablam!   |
Sep 14 17:31:16.051 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 14 17:31:16.051 INFO kablam! 
Sep 14 17:31:16.051 INFO kablam! warning: variant is never constructed: `Link`
Sep 14 17:31:16.051 INFO kablam!  --> src/lib.rs:8:5
Sep 14 17:31:16.051 INFO kablam!   |
Sep 14 17:31:16.051 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 14 17:31:16.051 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.051 INFO kablam! 
Sep 14 17:31:16.056 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 14 17:31:16.056 INFO kablam!  --> src/lib.rs:3:5
Sep 14 17:31:16.056 INFO kablam!   |
Sep 14 17:31:16.056 INFO kablam! 3 | use std::rc::Rc;
Sep 14 17:31:16.056 INFO kablam!   |     ^^^^^^^^^^^
Sep 14 17:31:16.056 INFO kablam!   |
Sep 14 17:31:16.056 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 14 17:31:16.056 INFO kablam! 
Sep 14 17:31:16.098 INFO kablam! warning: unused variable: `p`
Sep 14 17:31:16.098 INFO kablam!   --> src/lib.rs:37:18
Sep 14 17:31:16.098 INFO kablam!    |
Sep 14 17:31:16.098 INFO kablam! 37 |             Some(p) => return,
Sep 14 17:31:16.098 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 14 17:31:16.098 INFO kablam!    |
Sep 14 17:31:16.098 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 14 17:31:16.098 INFO kablam! 
Sep 14 17:31:16.101 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.101 INFO kablam!   --> src/lib.rs:35:13
Sep 14 17:31:16.101 INFO kablam!    |
Sep 14 17:31:16.101 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 14 17:31:16.101 INFO kablam!    |             ----^^^
Sep 14 17:31:16.101 INFO kablam!    |             |
Sep 14 17:31:16.101 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.101 INFO kablam!    |
Sep 14 17:31:16.101 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 14 17:31:16.101 INFO kablam! 
Sep 14 17:31:16.102 INFO kablam! warning: variable does not need to be mutable
Sep 14 17:31:16.102 INFO kablam!   --> src/lib.rs:53:13
Sep 14 17:31:16.102 INFO kablam!    |
Sep 14 17:31:16.102 INFO kablam! 53 |         let mut pos: usize;
Sep 14 17:31:16.102 INFO kablam!    |             ----^^^
Sep 14 17:31:16.102 INFO kablam!    |             |
Sep 14 17:31:16.102 INFO kablam!    |             help: remove this `mut`
Sep 14 17:31:16.102 INFO kablam! 
Sep 14 17:31:16.105 INFO kablam! warning: variant is never constructed: `Root`
Sep 14 17:31:16.105 INFO kablam!  --> src/lib.rs:7:5
Sep 14 17:31:16.105 INFO kablam!   |
Sep 14 17:31:16.105 INFO kablam! 7 |     Root(ValueType, u32),
Sep 14 17:31:16.105 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.105 INFO kablam!   |
Sep 14 17:31:16.105 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 14 17:31:16.105 INFO kablam! 
Sep 14 17:31:16.105 INFO kablam! warning: variant is never constructed: `Link`
Sep 14 17:31:16.105 INFO kablam!  --> src/lib.rs:8:5
Sep 14 17:31:16.105 INFO kablam!   |
Sep 14 17:31:16.105 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 14 17:31:16.106 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 14 17:31:16.106 INFO kablam! 
Sep 14 17:31:16.120 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.120 INFO kablam!    --> src/lib.rs:106:5
Sep 14 17:31:16.120 INFO kablam!     |
Sep 14 17:31:16.120 INFO kablam! 106 |     ds.union(1, 2);
Sep 14 17:31:16.120 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 14 17:31:16.120 INFO kablam!     |
Sep 14 17:31:16.120 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 14 17:31:16.120 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.121 INFO kablam! 
Sep 14 17:31:16.121 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.121 INFO kablam!    --> src/lib.rs:107:5
Sep 14 17:31:16.121 INFO kablam!     |
Sep 14 17:31:16.121 INFO kablam! 107 |     ds.union(2, 3);
Sep 14 17:31:16.121 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 14 17:31:16.121 INFO kablam!     |
Sep 14 17:31:16.121 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.121 INFO kablam! 
Sep 14 17:31:16.121 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.121 INFO kablam!    --> src/lib.rs:118:5
Sep 14 17:31:16.121 INFO kablam!     |
Sep 14 17:31:16.121 INFO kablam! 118 |     ds.union(-1, 4);
Sep 14 17:31:16.121 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Sep 14 17:31:16.121 INFO kablam!     |
Sep 14 17:31:16.121 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.121 INFO kablam! 
Sep 14 17:31:16.121 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 14 17:31:16.121 INFO kablam!    --> src/lib.rs:119:5
Sep 14 17:31:16.121 INFO kablam!     |
Sep 14 17:31:16.121 INFO kablam! 119 |     ds.union(2, 4);
Sep 14 17:31:16.121 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 14 17:31:16.121 INFO kablam!     |
Sep 14 17:31:16.121 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 14 17:31:16.121 INFO kablam! 
Sep 14 17:31:16.133 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
Sep 14 17:31:16.135 INFO kablam! su: No module specific data is present
Sep 14 17:31:17.177 INFO running `"docker" "rm" "-f" "6799df99932925a293582eb7d7bad11ed001e928aa96d861ba7797e3d6e549dc"`
Sep 14 17:31:17.266 INFO blam! 6799df99932925a293582eb7d7bad11ed001e928aa96d861ba7797e3d6e549dc