Oct 13 16:01:19.239 INFO checking disjoint-set-0.0.2 against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 13 16:01:19.240 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 16:01:19.633 INFO blam! 4f4058177f37cc4233cf19c19bc5deff62563ad193ea95e4ec9a7d08fb50dc5f
Oct 13 16:01:19.635 INFO running `"docker" "start" "-a" "4f4058177f37cc4233cf19c19bc5deff62563ad193ea95e4ec9a7d08fb50dc5f"`
Oct 13 16:01:20.584 INFO kablam! usermod: no changes
Oct 13 16:01:20.609 INFO kablam!     Checking disjoint-set v0.0.2 (/source)
Oct 13 16:01:21.112 INFO kablam! warning: unused import: `std::rc::Rc`
Oct 13 16:01:21.112 INFO kablam!  --> src/lib.rs:3:5
Oct 13 16:01:21.112 INFO kablam!   |
Oct 13 16:01:21.112 INFO kablam! 3 | use std::rc::Rc;
Oct 13 16:01:21.112 INFO kablam!   |     ^^^^^^^^^^^
Oct 13 16:01:21.112 INFO kablam!   |
Oct 13 16:01:21.112 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 16:01:21.112 INFO kablam! 
Oct 13 16:01:21.136 INFO kablam! warning: unused variable: `p`
Oct 13 16:01:21.136 INFO kablam!   --> src/lib.rs:37:18
Oct 13 16:01:21.136 INFO kablam!    |
Oct 13 16:01:21.136 INFO kablam! 37 |             Some(p) => return,
Oct 13 16:01:21.136 INFO kablam!    |                  ^ help: consider using `_p` instead
Oct 13 16:01:21.136 INFO kablam!    |
Oct 13 16:01:21.136 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 16:01:21.136 INFO kablam! 
Oct 13 16:01:21.140 INFO kablam! warning: variable does not need to be mutable
Oct 13 16:01:21.140 INFO kablam!   --> src/lib.rs:35:13
Oct 13 16:01:21.140 INFO kablam!    |
Oct 13 16:01:21.140 INFO kablam! 35 |         let mut len = &mut self.set_size;
Oct 13 16:01:21.140 INFO kablam!    |             ----^^^
Oct 13 16:01:21.140 INFO kablam!    |             |
Oct 13 16:01:21.140 INFO kablam!    |             help: remove this `mut`
Oct 13 16:01:21.140 INFO kablam!    |
Oct 13 16:01:21.140 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 16:01:21.140 INFO kablam! 
Oct 13 16:01:21.140 INFO kablam! warning: variable does not need to be mutable
Oct 13 16:01:21.140 INFO kablam!   --> src/lib.rs:53:13
Oct 13 16:01:21.140 INFO kablam!    |
Oct 13 16:01:21.140 INFO kablam! 53 |         let mut pos: usize;
Oct 13 16:01:21.140 INFO kablam!    |             ----^^^
Oct 13 16:01:21.140 INFO kablam!    |             |
Oct 13 16:01:21.140 INFO kablam!    |             help: remove this `mut`
Oct 13 16:01:21.140 INFO kablam! 
Oct 13 16:01:21.140 INFO kablam! warning: variant is never constructed: `Root`
Oct 13 16:01:21.140 INFO kablam!  --> src/lib.rs:7:5
Oct 13 16:01:21.140 INFO kablam!   |
Oct 13 16:01:21.140 INFO kablam! 7 |     Root(ValueType, u32),
Oct 13 16:01:21.140 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Oct 13 16:01:21.140 INFO kablam!   |
Oct 13 16:01:21.140 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 13 16:01:21.140 INFO kablam! 
Oct 13 16:01:21.141 INFO kablam! warning: variant is never constructed: `Link`
Oct 13 16:01:21.141 INFO kablam!  --> src/lib.rs:8:5
Oct 13 16:01:21.141 INFO kablam!   |
Oct 13 16:01:21.141 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Oct 13 16:01:21.141 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 16:01:21.141 INFO kablam! 
Oct 13 16:01:21.229 INFO kablam! warning: unused import: `std::rc::Rc`
Oct 13 16:01:21.229 INFO kablam!  --> src/lib.rs:3:5
Oct 13 16:01:21.229 INFO kablam!   |
Oct 13 16:01:21.229 INFO kablam! 3 | use std::rc::Rc;
Oct 13 16:01:21.229 INFO kablam!   |     ^^^^^^^^^^^
Oct 13 16:01:21.229 INFO kablam!   |
Oct 13 16:01:21.229 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 16:01:21.229 INFO kablam! 
Oct 13 16:01:21.264 INFO kablam! warning: unused variable: `p`
Oct 13 16:01:21.264 INFO kablam!   --> src/lib.rs:37:18
Oct 13 16:01:21.264 INFO kablam!    |
Oct 13 16:01:21.264 INFO kablam! 37 |             Some(p) => return,
Oct 13 16:01:21.264 INFO kablam!    |                  ^ help: consider using `_p` instead
Oct 13 16:01:21.264 INFO kablam!    |
Oct 13 16:01:21.264 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 16:01:21.264 INFO kablam! 
Oct 13 16:01:21.267 INFO kablam! warning: variable does not need to be mutable
Oct 13 16:01:21.267 INFO kablam!   --> src/lib.rs:35:13
Oct 13 16:01:21.267 INFO kablam!    |
Oct 13 16:01:21.267 INFO kablam! 35 |         let mut len = &mut self.set_size;
Oct 13 16:01:21.267 INFO kablam!    |             ----^^^
Oct 13 16:01:21.267 INFO kablam!    |             |
Oct 13 16:01:21.267 INFO kablam!    |             help: remove this `mut`
Oct 13 16:01:21.267 INFO kablam!    |
Oct 13 16:01:21.267 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 16:01:21.267 INFO kablam! 
Oct 13 16:01:21.269 INFO kablam! warning: variable does not need to be mutable
Oct 13 16:01:21.269 INFO kablam!   --> src/lib.rs:53:13
Oct 13 16:01:21.269 INFO kablam!    |
Oct 13 16:01:21.269 INFO kablam! 53 |         let mut pos: usize;
Oct 13 16:01:21.269 INFO kablam!    |             ----^^^
Oct 13 16:01:21.269 INFO kablam!    |             |
Oct 13 16:01:21.269 INFO kablam!    |             help: remove this `mut`
Oct 13 16:01:21.269 INFO kablam! 
Oct 13 16:01:21.271 INFO kablam! warning: variant is never constructed: `Root`
Oct 13 16:01:21.271 INFO kablam!  --> src/lib.rs:7:5
Oct 13 16:01:21.271 INFO kablam!   |
Oct 13 16:01:21.271 INFO kablam! 7 |     Root(ValueType, u32),
Oct 13 16:01:21.271 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Oct 13 16:01:21.271 INFO kablam!   |
Oct 13 16:01:21.271 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 13 16:01:21.271 INFO kablam! 
Oct 13 16:01:21.271 INFO kablam! warning: variant is never constructed: `Link`
Oct 13 16:01:21.271 INFO kablam!  --> src/lib.rs:8:5
Oct 13 16:01:21.272 INFO kablam!   |
Oct 13 16:01:21.272 INFO kablam! 8 |     Link(Box<SetItem<ValueType>>)
Oct 13 16:01:21.272 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 16:01:21.272 INFO kablam! 
Oct 13 16:01:21.282 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 16:01:21.282 INFO kablam!    --> src/lib.rs:106:5
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam! 106 |     ds.union(1, 2);
Oct 13 16:01:21.282 INFO kablam!     |     ^^^^^^^^^^^^^^^
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 13 16:01:21.282 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 16:01:21.282 INFO kablam! 
Oct 13 16:01:21.282 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 16:01:21.282 INFO kablam!    --> src/lib.rs:107:5
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam! 107 |     ds.union(2, 3);
Oct 13 16:01:21.282 INFO kablam!     |     ^^^^^^^^^^^^^^^
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 16:01:21.282 INFO kablam! 
Oct 13 16:01:21.282 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 16:01:21.282 INFO kablam!    --> src/lib.rs:118:5
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam! 118 |     ds.union(-1, 4);
Oct 13 16:01:21.282 INFO kablam!     |     ^^^^^^^^^^^^^^^^
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 16:01:21.282 INFO kablam! 
Oct 13 16:01:21.282 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 16:01:21.282 INFO kablam!    --> src/lib.rs:119:5
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam! 119 |     ds.union(2, 4);
Oct 13 16:01:21.282 INFO kablam!     |     ^^^^^^^^^^^^^^^
Oct 13 16:01:21.282 INFO kablam!     |
Oct 13 16:01:21.282 INFO kablam!     = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 16:01:21.282 INFO kablam! 
Oct 13 16:01:21.294 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
Oct 13 16:01:21.298 INFO kablam! su: No module specific data is present
Oct 13 16:01:21.557 INFO running `"docker" "rm" "-f" "4f4058177f37cc4233cf19c19bc5deff62563ad193ea95e4ec9a7d08fb50dc5f"`
Oct 13 16:01:21.691 INFO blam! 4f4058177f37cc4233cf19c19bc5deff62563ad193ea95e4ec9a7d08fb50dc5f