Nov 18 16:00:26.405 INFO testing disjoint-set-0.0.2 against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 18 16:00:26.406 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt build --frozen" "-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 18 16:00:26.851 INFO [stdout] ec1422e33f581e3da5c84b126da70f8411ee25f16d7b5b3fa253571012db2e7d
Nov 18 16:00:26.861 INFO running `"docker" "start" "-a" "ec1422e33f581e3da5c84b126da70f8411ee25f16d7b5b3fa253571012db2e7d"`
Nov 18 16:00:27.666 INFO [stderr] usermod: no changes
Nov 18 16:00:27.693 INFO [stderr]    Compiling disjoint-set v0.0.2 (/source)
Nov 18 16:00:28.115 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 18 16:00:28.115 INFO [stderr]  --> src/lib.rs:3:5
Nov 18 16:00:28.115 INFO [stderr]   |
Nov 18 16:00:28.116 INFO [stderr] 3 | use std::rc::Rc;
Nov 18 16:00:28.116 INFO [stderr]   |     ^^^^^^^^^^^
Nov 18 16:00:28.116 INFO [stderr]   |
Nov 18 16:00:28.117 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 18 16:00:28.117 INFO [stderr] 
Nov 18 16:00:28.189 INFO [stderr] warning: unused variable: `p`
Nov 18 16:00:28.189 INFO [stderr]   --> src/lib.rs:37:18
Nov 18 16:00:28.189 INFO [stderr]    |
Nov 18 16:00:28.190 INFO [stderr] 37 |             Some(p) => return,
Nov 18 16:00:28.190 INFO [stderr]    |                  ^ help: consider using `_p` instead
Nov 18 16:00:28.190 INFO [stderr]    |
Nov 18 16:00:28.190 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 18 16:00:28.191 INFO [stderr] 
Nov 18 16:00:28.191 INFO [stderr] warning: variable does not need to be mutable
Nov 18 16:00:28.191 INFO [stderr]   --> src/lib.rs:35:13
Nov 18 16:00:28.192 INFO [stderr]    |
Nov 18 16:00:28.192 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Nov 18 16:00:28.192 INFO [stderr]    |             ----^^^
Nov 18 16:00:28.192 INFO [stderr]    |             |
Nov 18 16:00:28.193 INFO [stderr]    |             help: remove this `mut`
Nov 18 16:00:28.193 INFO [stderr]    |
Nov 18 16:00:28.193 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 18 16:00:28.194 INFO [stderr] 
Nov 18 16:00:28.194 INFO [stderr] warning: variable does not need to be mutable
Nov 18 16:00:28.194 INFO [stderr]   --> src/lib.rs:53:13
Nov 18 16:00:28.195 INFO [stderr]    |
Nov 18 16:00:28.195 INFO [stderr] 53 |         let mut pos: usize;
Nov 18 16:00:28.195 INFO [stderr]    |             ----^^^
Nov 18 16:00:28.195 INFO [stderr]    |             |
Nov 18 16:00:28.196 INFO [stderr]    |             help: remove this `mut`
Nov 18 16:00:28.196 INFO [stderr] 
Nov 18 16:00:28.196 INFO [stderr] warning: variant is never constructed: `Root`
Nov 18 16:00:28.197 INFO [stderr]  --> src/lib.rs:7:5
Nov 18 16:00:28.197 INFO [stderr]   |
Nov 18 16:00:28.197 INFO [stderr] 7 |     Root(ValueType, u32),
Nov 18 16:00:28.198 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Nov 18 16:00:28.198 INFO [stderr]   |
Nov 18 16:00:28.198 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 18 16:00:28.199 INFO [stderr] 
Nov 18 16:00:28.199 INFO [stderr] warning: variant is never constructed: `Link`
Nov 18 16:00:28.199 INFO [stderr]  --> src/lib.rs:8:5
Nov 18 16:00:28.199 INFO [stderr]   |
Nov 18 16:00:28.200 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Nov 18 16:00:28.200 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 16:00:28.200 INFO [stderr] 
Nov 18 16:00:28.287 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Nov 18 16:00:28.287 INFO [stderr] su: No module specific data is present
Nov 18 16:00:28.766 INFO running `"docker" "inspect" "ec1422e33f581e3da5c84b126da70f8411ee25f16d7b5b3fa253571012db2e7d"`
Nov 18 16:00:28.967 INFO running `"docker" "rm" "-f" "ec1422e33f581e3da5c84b126da70f8411ee25f16d7b5b3fa253571012db2e7d"`
Nov 18 16:00:29.191 INFO [stdout] ec1422e33f581e3da5c84b126da70f8411ee25f16d7b5b3fa253571012db2e7d
Nov 18 16:00:29.200 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen --no-run" "-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 18 16:00:29.575 INFO [stdout] 66046ab61f5f720b4fc268b0357938635fd5f3b03a99107ba7b5d7348dd6223b
Nov 18 16:00:29.578 INFO running `"docker" "start" "-a" "66046ab61f5f720b4fc268b0357938635fd5f3b03a99107ba7b5d7348dd6223b"`
Nov 18 16:00:30.590 INFO [stderr] usermod: no changes
Nov 18 16:00:30.663 INFO [stderr]    Compiling disjoint-set v0.0.2 (/source)
Nov 18 16:00:31.251 INFO [stderr] warning: unused import: `std::rc::Rc`
Nov 18 16:00:31.251 INFO [stderr]  --> src/lib.rs:3:5
Nov 18 16:00:31.251 INFO [stderr]   |
Nov 18 16:00:31.251 INFO [stderr] 3 | use std::rc::Rc;
Nov 18 16:00:31.251 INFO [stderr]   |     ^^^^^^^^^^^
Nov 18 16:00:31.251 INFO [stderr]   |
Nov 18 16:00:31.251 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 18 16:00:31.251 INFO [stderr] 
Nov 18 16:00:31.283 INFO [stderr] warning: unused variable: `p`
Nov 18 16:00:31.283 INFO [stderr]   --> src/lib.rs:37:18
Nov 18 16:00:31.283 INFO [stderr]    |
Nov 18 16:00:31.283 INFO [stderr] 37 |             Some(p) => return,
Nov 18 16:00:31.283 INFO [stderr]    |                  ^ help: consider using `_p` instead
Nov 18 16:00:31.283 INFO [stderr]    |
Nov 18 16:00:31.283 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 18 16:00:31.283 INFO [stderr] 
Nov 18 16:00:31.291 INFO [stderr] warning: variable does not need to be mutable
Nov 18 16:00:31.291 INFO [stderr]   --> src/lib.rs:35:13
Nov 18 16:00:31.291 INFO [stderr]    |
Nov 18 16:00:31.291 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Nov 18 16:00:31.291 INFO [stderr]    |             ----^^^
Nov 18 16:00:31.291 INFO [stderr]    |             |
Nov 18 16:00:31.291 INFO [stderr]    |             help: remove this `mut`
Nov 18 16:00:31.291 INFO [stderr]    |
Nov 18 16:00:31.291 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 18 16:00:31.291 INFO [stderr] 
Nov 18 16:00:31.291 INFO [stderr] warning: variable does not need to be mutable
Nov 18 16:00:31.291 INFO [stderr]   --> src/lib.rs:53:13
Nov 18 16:00:31.291 INFO [stderr]    |
Nov 18 16:00:31.291 INFO [stderr] 53 |         let mut pos: usize;
Nov 18 16:00:31.291 INFO [stderr]    |             ----^^^
Nov 18 16:00:31.291 INFO [stderr]    |             |
Nov 18 16:00:31.291 INFO [stderr]    |             help: remove this `mut`
Nov 18 16:00:31.291 INFO [stderr] 
Nov 18 16:00:31.307 INFO [stderr] warning: variant is never constructed: `Root`
Nov 18 16:00:31.307 INFO [stderr]  --> src/lib.rs:7:5
Nov 18 16:00:31.307 INFO [stderr]   |
Nov 18 16:00:31.307 INFO [stderr] 7 |     Root(ValueType, u32),
Nov 18 16:00:31.307 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Nov 18 16:00:31.307 INFO [stderr]   |
Nov 18 16:00:31.307 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 18 16:00:31.307 INFO [stderr] 
Nov 18 16:00:31.307 INFO [stderr] warning: variant is never constructed: `Link`
Nov 18 16:00:31.307 INFO [stderr]  --> src/lib.rs:8:5
Nov 18 16:00:31.307 INFO [stderr]   |
Nov 18 16:00:31.307 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Nov 18 16:00:31.307 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 16:00:31.307 INFO [stderr] 
Nov 18 16:00:31.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 16:00:31.323 INFO [stderr]    --> src/lib.rs:106:5
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr] 106 |     ds.union(1, 2);
Nov 18 16:00:31.323 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 18 16:00:31.323 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 16:00:31.323 INFO [stderr] 
Nov 18 16:00:31.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 16:00:31.323 INFO [stderr]    --> src/lib.rs:107:5
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr] 107 |     ds.union(2, 3);
Nov 18 16:00:31.323 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 16:00:31.323 INFO [stderr] 
Nov 18 16:00:31.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 16:00:31.323 INFO [stderr]    --> src/lib.rs:118:5
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr] 118 |     ds.union(-1, 4);
Nov 18 16:00:31.323 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 16:00:31.323 INFO [stderr] 
Nov 18 16:00:31.323 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 16:00:31.323 INFO [stderr]    --> src/lib.rs:119:5
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr] 119 |     ds.union(2, 4);
Nov 18 16:00:31.323 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Nov 18 16:00:31.323 INFO [stderr]     |
Nov 18 16:00:31.323 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 16:00:31.323 INFO [stderr] 
Nov 18 16:00:32.131 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
Nov 18 16:00:32.131 INFO [stderr] su: No module specific data is present
Nov 18 16:00:33.247 INFO running `"docker" "inspect" "66046ab61f5f720b4fc268b0357938635fd5f3b03a99107ba7b5d7348dd6223b"`
Nov 18 16:00:33.581 INFO running `"docker" "rm" "-f" "66046ab61f5f720b4fc268b0357938635fd5f3b03a99107ba7b5d7348dd6223b"`
Nov 18 16:00:33.974 INFO [stdout] 66046ab61f5f720b4fc268b0357938635fd5f3b03a99107ba7b5d7348dd6223b
Nov 18 16:00:33.981 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen" "-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 18 16:00:34.423 INFO [stdout] b38155dd7d6baaa85605529d4529949d76a7f48418f7fb14e75d7dbd9177ac46
Nov 18 16:00:34.425 INFO running `"docker" "start" "-a" "b38155dd7d6baaa85605529d4529949d76a7f48418f7fb14e75d7dbd9177ac46"`
Nov 18 16:00:35.715 INFO [stderr] usermod: no changes
Nov 18 16:00:35.791 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Nov 18 16:00:35.800 INFO [stderr]      Running /target/debug/deps/disjoint_set-3ede976ed15520d8
Nov 18 16:00:35.800 INFO [stdout] 
Nov 18 16:00:35.800 INFO [stdout] running 1 test
Nov 18 16:00:35.811 INFO [stdout] test it_works ... ok
Nov 18 16:00:35.811 INFO [stdout] 
Nov 18 16:00:35.812 INFO [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 16:00:35.812 INFO [stdout] 
Nov 18 16:00:35.823 INFO [stderr]    Doc-tests disjoint-set
Nov 18 16:00:36.743 INFO [stdout] 
Nov 18 16:00:36.743 INFO [stdout] running 0 tests
Nov 18 16:00:36.743 INFO [stdout] 
Nov 18 16:00:36.743 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 16:00:36.743 INFO [stdout] 
Nov 18 16:00:36.751 INFO [stderr] su: No module specific data is present
Nov 18 16:00:37.393 INFO running `"docker" "inspect" "b38155dd7d6baaa85605529d4529949d76a7f48418f7fb14e75d7dbd9177ac46"`
Nov 18 16:00:37.755 INFO running `"docker" "rm" "-f" "b38155dd7d6baaa85605529d4529949d76a7f48418f7fb14e75d7dbd9177ac46"`
Nov 18 16:00:38.151 INFO [stdout] b38155dd7d6baaa85605529d4529949d76a7f48418f7fb14e75d7dbd9177ac46