Sep 06 07:55:43.297 INFO checking disjoint-set-0.0.2 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 07:55:43.297 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 07:55:43.297 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-5/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 07:55:43.516 INFO blam! e0f47ed51cb49f8663d2caa8b4a8d87d9e1591c9be8dc495edf9af47dedfffdc
Sep 06 07:55:43.518 INFO running `"docker" "start" "-a" "e0f47ed51cb49f8663d2caa8b4a8d87d9e1591c9be8dc495edf9af47dedfffdc"`
Sep 06 07:55:44.754 INFO kablam! usermod: no changes
Sep 06 07:55:44.822 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Sep 06 07:55:45.114 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 06 07:55:45.114 INFO kablam!  --> src/lib.rs:3:5
Sep 06 07:55:45.114 INFO kablam!   |
Sep 06 07:55:45.114 INFO kablam! 3 | use std::rc::Rc;
Sep 06 07:55:45.114 INFO kablam!   |     ^^^^^^^^^^^
Sep 06 07:55:45.114 INFO kablam!   |
Sep 06 07:55:45.114 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 06 07:55:45.114 INFO kablam! 
Sep 06 07:55:45.150 INFO kablam! warning: unused variable: `p`
Sep 06 07:55:45.150 INFO kablam!   --> src/lib.rs:37:18
Sep 06 07:55:45.150 INFO kablam!    |
Sep 06 07:55:45.150 INFO kablam! 37 |             Some(p) => return,
Sep 06 07:55:45.150 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 06 07:55:45.150 INFO kablam!    |
Sep 06 07:55:45.150 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 06 07:55:45.150 INFO kablam! 
Sep 06 07:55:45.150 INFO kablam! warning: variable does not need to be mutable
Sep 06 07:55:45.150 INFO kablam!   --> src/lib.rs:35:13
Sep 06 07:55:45.150 INFO kablam!    |
Sep 06 07:55:45.150 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 06 07:55:45.150 INFO kablam!    |             ----^^^
Sep 06 07:55:45.150 INFO kablam!    |             |
Sep 06 07:55:45.150 INFO kablam!    |             help: remove this `mut`
Sep 06 07:55:45.150 INFO kablam!    |
Sep 06 07:55:45.150 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 06 07:55:45.150 INFO kablam! 
Sep 06 07:55:45.150 INFO kablam! warning: variable does not need to be mutable
Sep 06 07:55:45.150 INFO kablam!   --> src/lib.rs:53:13
Sep 06 07:55:45.150 INFO kablam!    |
Sep 06 07:55:45.150 INFO kablam! 53 |         let mut pos: usize;
Sep 06 07:55:45.150 INFO kablam!    |             ----^^^
Sep 06 07:55:45.150 INFO kablam!    |             |
Sep 06 07:55:45.150 INFO kablam!    |             help: remove this `mut`
Sep 06 07:55:45.150 INFO kablam! 
Sep 06 07:55:45.154 INFO kablam! warning: variant is never constructed: `Root`
Sep 06 07:55:45.154 INFO kablam!  --> src/lib.rs:7:5
Sep 06 07:55:45.154 INFO kablam!   |
Sep 06 07:55:45.154 INFO kablam! 7 |     Root(ValueType, u32),
Sep 06 07:55:45.154 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 06 07:55:45.154 INFO kablam!   |
Sep 06 07:55:45.154 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 06 07:55:45.154 INFO kablam! 
Sep 06 07:55:45.154 INFO kablam! warning: variant is never constructed: `Link`
Sep 06 07:55:45.154 INFO kablam!  --> src/lib.rs:8:5
Sep 06 07:55:45.154 INFO kablam!   |
Sep 06 07:55:45.154 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 06 07:55:45.154 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 07:55:45.154 INFO kablam! 
Sep 06 07:55:45.210 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 06 07:55:45.210 INFO kablam!  --> src/lib.rs:3:5
Sep 06 07:55:45.210 INFO kablam!   |
Sep 06 07:55:45.210 INFO kablam! 3 | use std::rc::Rc;
Sep 06 07:55:45.210 INFO kablam!   |     ^^^^^^^^^^^
Sep 06 07:55:45.210 INFO kablam!   |
Sep 06 07:55:45.210 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 06 07:55:45.210 INFO kablam! 
Sep 06 07:55:45.250 INFO kablam! warning: unused variable: `p`
Sep 06 07:55:45.250 INFO kablam!   --> src/lib.rs:37:18
Sep 06 07:55:45.250 INFO kablam!    |
Sep 06 07:55:45.250 INFO kablam! 37 |             Some(p) => return,
Sep 06 07:55:45.250 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 06 07:55:45.250 INFO kablam!    |
Sep 06 07:55:45.250 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 06 07:55:45.250 INFO kablam! 
Sep 06 07:55:45.254 INFO kablam! warning: variable does not need to be mutable
Sep 06 07:55:45.254 INFO kablam!   --> src/lib.rs:35:13
Sep 06 07:55:45.254 INFO kablam!    |
Sep 06 07:55:45.254 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 06 07:55:45.254 INFO kablam!    |             ----^^^
Sep 06 07:55:45.254 INFO kablam!    |             |
Sep 06 07:55:45.254 INFO kablam!    |             help: remove this `mut`
Sep 06 07:55:45.254 INFO kablam!    |
Sep 06 07:55:45.254 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 06 07:55:45.254 INFO kablam! 
Sep 06 07:55:45.254 INFO kablam! warning: variable does not need to be mutable
Sep 06 07:55:45.254 INFO kablam!   --> src/lib.rs:53:13
Sep 06 07:55:45.254 INFO kablam!    |
Sep 06 07:55:45.254 INFO kablam! 53 |         let mut pos: usize;
Sep 06 07:55:45.254 INFO kablam!    |             ----^^^
Sep 06 07:55:45.254 INFO kablam!    |             |
Sep 06 07:55:45.254 INFO kablam!    |             help: remove this `mut`
Sep 06 07:55:45.254 INFO kablam! 
Sep 06 07:55:45.260 INFO kablam! warning: variant is never constructed: `Root`
Sep 06 07:55:45.260 INFO kablam!  --> src/lib.rs:7:5
Sep 06 07:55:45.260 INFO kablam!   |
Sep 06 07:55:45.260 INFO kablam! 7 |     Root(ValueType, u32),
Sep 06 07:55:45.260 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 06 07:55:45.260 INFO kablam!   |
Sep 06 07:55:45.260 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 06 07:55:45.260 INFO kablam! 
Sep 06 07:55:45.260 INFO kablam! warning: variant is never constructed: `Link`
Sep 06 07:55:45.260 INFO kablam!  --> src/lib.rs:8:5
Sep 06 07:55:45.260 INFO kablam!   |
Sep 06 07:55:45.260 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 06 07:55:45.260 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 07:55:45.260 INFO kablam! 
Sep 06 07:55:45.278 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 06 07:55:45.278 INFO kablam!    --> src/lib.rs:106:5
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam! 106 |     ds.union(1, 2);
Sep 06 07:55:45.278 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 06 07:55:45.278 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 06 07:55:45.278 INFO kablam! 
Sep 06 07:55:45.278 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 06 07:55:45.278 INFO kablam!    --> src/lib.rs:107:5
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam! 107 |     ds.union(2, 3);
Sep 06 07:55:45.278 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 06 07:55:45.278 INFO kablam! 
Sep 06 07:55:45.278 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 06 07:55:45.278 INFO kablam!    --> src/lib.rs:118:5
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam! 118 |     ds.union(-1, 4);
Sep 06 07:55:45.278 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 06 07:55:45.278 INFO kablam! 
Sep 06 07:55:45.278 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 06 07:55:45.278 INFO kablam!    --> src/lib.rs:119:5
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam! 119 |     ds.union(2, 4);
Sep 06 07:55:45.278 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 06 07:55:45.278 INFO kablam!     |
Sep 06 07:55:45.278 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 06 07:55:45.278 INFO kablam! 
Sep 06 07:55:45.307 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Sep 06 07:55:45.310 INFO kablam! su: No module specific data is present
Sep 06 07:55:46.285 INFO running `"docker" "rm" "-f" "e0f47ed51cb49f8663d2caa8b4a8d87d9e1591c9be8dc495edf9af47dedfffdc"`
Sep 06 07:55:46.401 INFO blam! e0f47ed51cb49f8663d2caa8b4a8d87d9e1591c9be8dc495edf9af47dedfffdc