Nov 29 02:22:12.633 INFO checking disjoint-set-0.0.2 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 29 02:22:12.633 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-6/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 29 02:22:15.932 INFO [stdout] 820455ca965319b1d00e2392b9410d9b658b724e5535905053c14b2e095695dc
Nov 29 02:22:15.938 INFO running `"docker" "start" "-a" "820455ca965319b1d00e2392b9410d9b658b724e5535905053c14b2e095695dc"`
Nov 29 02:22:17.360 INFO [stderr] usermod: no changes
Nov 29 02:22:17.437 INFO [stderr]     Checking disjoint-set v0.0.2 (/source)
Nov 29 02:22:18.148 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 29 02:22:18.148 INFO [stderr]  --> src/lib.rs:3:5
Nov 29 02:22:18.148 INFO [stderr]   |
Nov 29 02:22:18.148 INFO [stderr] 3 | use std::rc::Rc;
Nov 29 02:22:18.148 INFO [stderr]   |     ^^^^^^^^^^^
Nov 29 02:22:18.148 INFO [stderr]   |
Nov 29 02:22:18.148 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 29 02:22:18.148 INFO [stderr] 
Nov 29 02:22:18.198 INFO [stderr] warning: unused variable: `p`
Nov 29 02:22:18.198 INFO [stderr]   --> src/lib.rs:37:18
Nov 29 02:22:18.198 INFO [stderr]    |
Nov 29 02:22:18.198 INFO [stderr] 37 |             Some(p) => return,
Nov 29 02:22:18.198 INFO [stderr]    |                  ^ help: consider using `_p` instead
Nov 29 02:22:18.198 INFO [stderr]    |
Nov 29 02:22:18.198 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 29 02:22:18.198 INFO [stderr] 
Nov 29 02:22:18.214 INFO [stderr] warning: variable does not need to be mutable
Nov 29 02:22:18.214 INFO [stderr]   --> src/lib.rs:35:13
Nov 29 02:22:18.214 INFO [stderr]    |
Nov 29 02:22:18.214 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Nov 29 02:22:18.214 INFO [stderr]    |             ----^^^
Nov 29 02:22:18.214 INFO [stderr]    |             |
Nov 29 02:22:18.214 INFO [stderr]    |             help: remove this `mut`
Nov 29 02:22:18.214 INFO [stderr]    |
Nov 29 02:22:18.214 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 29 02:22:18.214 INFO [stderr] 
Nov 29 02:22:18.214 INFO [stderr] warning: variable does not need to be mutable
Nov 29 02:22:18.214 INFO [stderr]   --> src/lib.rs:53:13
Nov 29 02:22:18.214 INFO [stderr]    |
Nov 29 02:22:18.214 INFO [stderr] 53 |         let mut pos: usize;
Nov 29 02:22:18.214 INFO [stderr]    |             ----^^^
Nov 29 02:22:18.214 INFO [stderr]    |             |
Nov 29 02:22:18.214 INFO [stderr]    |             help: remove this `mut`
Nov 29 02:22:18.214 INFO [stderr] 
Nov 29 02:22:18.214 INFO [stderr] warning: variant is never constructed: `Root`
Nov 29 02:22:18.214 INFO [stderr]  --> src/lib.rs:7:5
Nov 29 02:22:18.214 INFO [stderr]   |
Nov 29 02:22:18.214 INFO [stderr] 7 |     Root(ValueType, u32),
Nov 29 02:22:18.214 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Nov 29 02:22:18.214 INFO [stderr]   |
Nov 29 02:22:18.214 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 29 02:22:18.214 INFO [stderr] 
Nov 29 02:22:18.214 INFO [stderr] warning: variant is never constructed: `Link`
Nov 29 02:22:18.214 INFO [stderr]  --> src/lib.rs:8:5
Nov 29 02:22:18.214 INFO [stderr]   |
Nov 29 02:22:18.214 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Nov 29 02:22:18.214 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 02:22:18.214 INFO [stderr] 
Nov 29 02:22:18.344 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 29 02:22:18.344 INFO [stderr]  --> src/lib.rs:3:5
Nov 29 02:22:18.344 INFO [stderr]   |
Nov 29 02:22:18.344 INFO [stderr] 3 | use std::rc::Rc;
Nov 29 02:22:18.344 INFO [stderr]   |     ^^^^^^^^^^^
Nov 29 02:22:18.344 INFO [stderr]   |
Nov 29 02:22:18.344 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 29 02:22:18.344 INFO [stderr] 
Nov 29 02:22:18.377 INFO [stderr] warning: unused variable: `p`
Nov 29 02:22:18.377 INFO [stderr]   --> src/lib.rs:37:18
Nov 29 02:22:18.377 INFO [stderr]    |
Nov 29 02:22:18.377 INFO [stderr] 37 |             Some(p) => return,
Nov 29 02:22:18.377 INFO [stderr]    |                  ^ help: consider using `_p` instead
Nov 29 02:22:18.377 INFO [stderr]    |
Nov 29 02:22:18.377 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 29 02:22:18.377 INFO [stderr] 
Nov 29 02:22:18.380 INFO [stderr] warning: variable does not need to be mutable
Nov 29 02:22:18.380 INFO [stderr]   --> src/lib.rs:35:13
Nov 29 02:22:18.380 INFO [stderr]    |
Nov 29 02:22:18.380 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Nov 29 02:22:18.380 INFO [stderr]    |             ----^^^
Nov 29 02:22:18.380 INFO [stderr]    |             |
Nov 29 02:22:18.380 INFO [stderr]    |             help: remove this `mut`
Nov 29 02:22:18.380 INFO [stderr]    |
Nov 29 02:22:18.380 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 29 02:22:18.380 INFO [stderr] 
Nov 29 02:22:18.380 INFO [stderr] warning: variable does not need to be mutable
Nov 29 02:22:18.380 INFO [stderr]   --> src/lib.rs:53:13
Nov 29 02:22:18.380 INFO [stderr]    |
Nov 29 02:22:18.380 INFO [stderr] 53 |         let mut pos: usize;
Nov 29 02:22:18.380 INFO [stderr]    |             ----^^^
Nov 29 02:22:18.380 INFO [stderr]    |             |
Nov 29 02:22:18.380 INFO [stderr]    |             help: remove this `mut`
Nov 29 02:22:18.380 INFO [stderr] 
Nov 29 02:22:18.387 INFO [stderr] warning: variant is never constructed: `Root`
Nov 29 02:22:18.387 INFO [stderr]  --> src/lib.rs:7:5
Nov 29 02:22:18.387 INFO [stderr]   |
Nov 29 02:22:18.387 INFO [stderr] 7 |     Root(ValueType, u32),
Nov 29 02:22:18.387 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Nov 29 02:22:18.387 INFO [stderr]   |
Nov 29 02:22:18.387 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 29 02:22:18.387 INFO [stderr] 
Nov 29 02:22:18.387 INFO [stderr] warning: variant is never constructed: `Link`
Nov 29 02:22:18.387 INFO [stderr]  --> src/lib.rs:8:5
Nov 29 02:22:18.387 INFO [stderr]   |
Nov 29 02:22:18.387 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Nov 29 02:22:18.387 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 02:22:18.387 INFO [stderr] 
Nov 29 02:22:18.402 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 29 02:22:18.402 INFO [stderr]    --> src/lib.rs:106:5
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr] 106 |     ds.union(1, 2);
Nov 29 02:22:18.402 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 29 02:22:18.402 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 29 02:22:18.402 INFO [stderr] 
Nov 29 02:22:18.402 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 29 02:22:18.402 INFO [stderr]    --> src/lib.rs:107:5
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr] 107 |     ds.union(2, 3);
Nov 29 02:22:18.402 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 29 02:22:18.402 INFO [stderr] 
Nov 29 02:22:18.402 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 29 02:22:18.402 INFO [stderr]    --> src/lib.rs:118:5
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr] 118 |     ds.union(-1, 4);
Nov 29 02:22:18.402 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 29 02:22:18.402 INFO [stderr] 
Nov 29 02:22:18.402 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 29 02:22:18.402 INFO [stderr]    --> src/lib.rs:119:5
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr] 119 |     ds.union(2, 4);
Nov 29 02:22:18.402 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Nov 29 02:22:18.402 INFO [stderr]     |
Nov 29 02:22:18.402 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 29 02:22:18.402 INFO [stderr] 
Nov 29 02:22:18.420 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
Nov 29 02:22:18.425 INFO [stderr] su: No module specific data is present
Nov 29 02:22:18.866 INFO running `"docker" "inspect" "820455ca965319b1d00e2392b9410d9b658b724e5535905053c14b2e095695dc"`
Nov 29 02:22:19.018 INFO running `"docker" "rm" "-f" "820455ca965319b1d00e2392b9410d9b658b724e5535905053c14b2e095695dc"`
Nov 29 02:22:19.237 INFO [stdout] 820455ca965319b1d00e2392b9410d9b658b724e5535905053c14b2e095695dc