Sep 10 20:11:40.253 INFO checking disjoint-set-0.0.2 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 20:11:40.253 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 20:11:40.253 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-5/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 20:11:40.419 INFO blam! 67fbf9a5e219583fa5485163589c1e98796c1df8f9adc4a8ea2a3f8579112113
Sep 10 20:11:40.421 INFO running `"docker" "start" "-a" "67fbf9a5e219583fa5485163589c1e98796c1df8f9adc4a8ea2a3f8579112113"`
Sep 10 20:11:41.861 INFO kablam! usermod: no changes
Sep 10 20:11:41.888 INFO kablam!     Checking disjoint-set v0.0.2 (file:///source)
Sep 10 20:11:42.137 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 10 20:11:42.137 INFO kablam!  --> src/lib.rs:3:5
Sep 10 20:11:42.137 INFO kablam!   |
Sep 10 20:11:42.137 INFO kablam! 3 | use std::rc::Rc;
Sep 10 20:11:42.137 INFO kablam!   |     ^^^^^^^^^^^
Sep 10 20:11:42.137 INFO kablam!   |
Sep 10 20:11:42.137 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 20:11:42.137 INFO kablam! 
Sep 10 20:11:42.144 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 10 20:11:42.144 INFO kablam!  --> src/lib.rs:3:5
Sep 10 20:11:42.144 INFO kablam!   |
Sep 10 20:11:42.144 INFO kablam! 3 | use std::rc::Rc;
Sep 10 20:11:42.144 INFO kablam!   |     ^^^^^^^^^^^
Sep 10 20:11:42.144 INFO kablam!   |
Sep 10 20:11:42.144 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 20:11:42.144 INFO kablam! 
Sep 10 20:11:42.179 INFO kablam! warning: unused variable: `p`
Sep 10 20:11:42.179 INFO kablam!   --> src/lib.rs:37:18
Sep 10 20:11:42.179 INFO kablam!    |
Sep 10 20:11:42.179 INFO kablam! 37 |             Some(p) => return,
Sep 10 20:11:42.179 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 10 20:11:42.179 INFO kablam!    |
Sep 10 20:11:42.179 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 20:11:42.179 INFO kablam! 
Sep 10 20:11:42.181 INFO kablam! warning: unused variable: `p`
Sep 10 20:11:42.181 INFO kablam!   --> src/lib.rs:37:18
Sep 10 20:11:42.181 INFO kablam!    |
Sep 10 20:11:42.181 INFO kablam! 37 |             Some(p) => return,
Sep 10 20:11:42.181 INFO kablam!    |                  ^ help: consider using `_p` instead
Sep 10 20:11:42.181 INFO kablam!    |
Sep 10 20:11:42.181 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 20:11:42.181 INFO kablam! 
Sep 10 20:11:42.182 INFO kablam! warning: variable does not need to be mutable
Sep 10 20:11:42.182 INFO kablam!   --> src/lib.rs:35:13
Sep 10 20:11:42.182 INFO kablam!    |
Sep 10 20:11:42.182 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 10 20:11:42.182 INFO kablam!    |             ----^^^
Sep 10 20:11:42.182 INFO kablam!    |             |
Sep 10 20:11:42.182 INFO kablam!    |             help: remove this `mut`
Sep 10 20:11:42.182 INFO kablam!    |
Sep 10 20:11:42.182 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 10 20:11:42.182 INFO kablam! 
Sep 10 20:11:42.186 INFO kablam! warning: variable does not need to be mutable
Sep 10 20:11:42.186 INFO kablam!   --> src/lib.rs:53:13
Sep 10 20:11:42.186 INFO kablam!    |
Sep 10 20:11:42.186 INFO kablam! 53 |         let mut pos: usize;
Sep 10 20:11:42.186 INFO kablam!    |             ----^^^
Sep 10 20:11:42.186 INFO kablam!    |             |
Sep 10 20:11:42.186 INFO kablam!    |             help: remove this `mut`
Sep 10 20:11:42.186 INFO kablam! 
Sep 10 20:11:42.186 INFO kablam! warning: variant is never constructed: `Root`
Sep 10 20:11:42.186 INFO kablam!  --> src/lib.rs:7:5
Sep 10 20:11:42.186 INFO kablam!   |
Sep 10 20:11:42.186 INFO kablam! 7 |     Root(ValueType, u32),
Sep 10 20:11:42.186 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 10 20:11:42.186 INFO kablam!   |
Sep 10 20:11:42.186 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 20:11:42.186 INFO kablam! 
Sep 10 20:11:42.186 INFO kablam! warning: variant is never constructed: `Link`
Sep 10 20:11:42.186 INFO kablam!  --> src/lib.rs:8:5
Sep 10 20:11:42.186 INFO kablam!   |
Sep 10 20:11:42.186 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 10 20:11:42.186 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 20:11:42.186 INFO kablam! 
Sep 10 20:11:42.186 INFO kablam! warning: variable does not need to be mutable
Sep 10 20:11:42.186 INFO kablam!   --> src/lib.rs:35:13
Sep 10 20:11:42.186 INFO kablam!    |
Sep 10 20:11:42.186 INFO kablam! 35 |         let mut len = &mut self.set_size;
Sep 10 20:11:42.186 INFO kablam!    |             ----^^^
Sep 10 20:11:42.186 INFO kablam!    |             |
Sep 10 20:11:42.186 INFO kablam!    |             help: remove this `mut`
Sep 10 20:11:42.186 INFO kablam!    |
Sep 10 20:11:42.186 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 10 20:11:42.186 INFO kablam! 
Sep 10 20:11:42.186 INFO kablam! warning: variable does not need to be mutable
Sep 10 20:11:42.186 INFO kablam!   --> src/lib.rs:53:13
Sep 10 20:11:42.186 INFO kablam!    |
Sep 10 20:11:42.186 INFO kablam! 53 |         let mut pos: usize;
Sep 10 20:11:42.186 INFO kablam!    |             ----^^^
Sep 10 20:11:42.186 INFO kablam!    |             |
Sep 10 20:11:42.186 INFO kablam!    |             help: remove this `mut`
Sep 10 20:11:42.186 INFO kablam! 
Sep 10 20:11:42.188 INFO kablam! warning: variant is never constructed: `Root`
Sep 10 20:11:42.188 INFO kablam!  --> src/lib.rs:7:5
Sep 10 20:11:42.188 INFO kablam!   |
Sep 10 20:11:42.188 INFO kablam! 7 |     Root(ValueType, u32),
Sep 10 20:11:42.188 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 10 20:11:42.188 INFO kablam!   |
Sep 10 20:11:42.188 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 20:11:42.188 INFO kablam! 
Sep 10 20:11:42.188 INFO kablam! warning: variant is never constructed: `Link`
Sep 10 20:11:42.188 INFO kablam!  --> src/lib.rs:8:5
Sep 10 20:11:42.188 INFO kablam!   |
Sep 10 20:11:42.188 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Sep 10 20:11:42.188 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 20:11:42.188 INFO kablam! 
Sep 10 20:11:42.205 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 20:11:42.205 INFO kablam!    --> src/lib.rs:106:5
Sep 10 20:11:42.205 INFO kablam!     |
Sep 10 20:11:42.205 INFO kablam! 106 |     ds.union(1, 2);
Sep 10 20:11:42.205 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 10 20:11:42.205 INFO kablam!     |
Sep 10 20:11:42.205 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 20:11:42.205 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 20:11:42.205 INFO kablam! 
Sep 10 20:11:42.206 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 20:11:42.206 INFO kablam!    --> src/lib.rs:107:5
Sep 10 20:11:42.206 INFO kablam!     |
Sep 10 20:11:42.206 INFO kablam! 107 |     ds.union(2, 3);
Sep 10 20:11:42.206 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 10 20:11:42.206 INFO kablam!     |
Sep 10 20:11:42.206 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 20:11:42.206 INFO kablam! 
Sep 10 20:11:42.206 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 20:11:42.206 INFO kablam!    --> src/lib.rs:118:5
Sep 10 20:11:42.206 INFO kablam!     |
Sep 10 20:11:42.206 INFO kablam! 118 |     ds.union(-1, 4);
Sep 10 20:11:42.206 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Sep 10 20:11:42.206 INFO kablam!     |
Sep 10 20:11:42.206 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 20:11:42.206 INFO kablam! 
Sep 10 20:11:42.206 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 20:11:42.206 INFO kablam!    --> src/lib.rs:119:5
Sep 10 20:11:42.206 INFO kablam!     |
Sep 10 20:11:42.206 INFO kablam! 119 |     ds.union(2, 4);
Sep 10 20:11:42.206 INFO kablam!     |     ^^^^^^^^^^^^^^^
Sep 10 20:11:42.206 INFO kablam!     |
Sep 10 20:11:42.206 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 20:11:42.206 INFO kablam! 
Sep 10 20:11:42.224 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
Sep 10 20:11:42.226 INFO kablam! su: No module specific data is present
Sep 10 20:11:43.092 INFO running `"docker" "rm" "-f" "67fbf9a5e219583fa5485163589c1e98796c1df8f9adc4a8ea2a3f8579112113"`
Sep 10 20:11:43.183 INFO blam! 67fbf9a5e219583fa5485163589c1e98796c1df8f9adc4a8ea2a3f8579112113