Dec 07 18:39:10.269 INFO testing disjoint-set-0.0.2 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 07 18:39:10.269 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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"`
Dec 07 18:39:10.552 INFO [stdout] fa4dcc067c0e78fa71cbb58e6b4df3c333b1174fa9d098da30ee62c6f57211a3
Dec 07 18:39:10.554 INFO running `"docker" "start" "-a" "fa4dcc067c0e78fa71cbb58e6b4df3c333b1174fa9d098da30ee62c6f57211a3"`
Dec 07 18:39:11.545 INFO [stderr] usermod: no changes
Dec 07 18:39:11.620 INFO [stderr]    Compiling disjoint-set v0.0.2 (/source)
Dec 07 18:39:11.993 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 07 18:39:11.993 INFO [stderr]  --> src/lib.rs:3:5
Dec 07 18:39:11.993 INFO [stderr]   |
Dec 07 18:39:11.993 INFO [stderr] 3 | use std::rc::Rc;
Dec 07 18:39:11.993 INFO [stderr]   |     ^^^^^^^^^^^
Dec 07 18:39:11.993 INFO [stderr]   |
Dec 07 18:39:11.993 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 07 18:39:11.993 INFO [stderr] 
Dec 07 18:39:12.018 INFO [stderr] warning: unused variable: `p`
Dec 07 18:39:12.018 INFO [stderr]   --> src/lib.rs:37:18
Dec 07 18:39:12.018 INFO [stderr]    |
Dec 07 18:39:12.018 INFO [stderr] 37 |             Some(p) => return,
Dec 07 18:39:12.018 INFO [stderr]    |                  ^ help: consider using `_p` instead
Dec 07 18:39:12.019 INFO [stderr]    |
Dec 07 18:39:12.019 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 07 18:39:12.019 INFO [stderr] 
Dec 07 18:39:12.022 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:12.022 INFO [stderr]   --> src/lib.rs:35:13
Dec 07 18:39:12.022 INFO [stderr]    |
Dec 07 18:39:12.022 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Dec 07 18:39:12.022 INFO [stderr]    |             ----^^^
Dec 07 18:39:12.022 INFO [stderr]    |             |
Dec 07 18:39:12.022 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:12.022 INFO [stderr]    |
Dec 07 18:39:12.022 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 18:39:12.022 INFO [stderr] 
Dec 07 18:39:12.022 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:12.022 INFO [stderr]   --> src/lib.rs:53:13
Dec 07 18:39:12.022 INFO [stderr]    |
Dec 07 18:39:12.022 INFO [stderr] 53 |         let mut pos: usize;
Dec 07 18:39:12.022 INFO [stderr]    |             ----^^^
Dec 07 18:39:12.022 INFO [stderr]    |             |
Dec 07 18:39:12.022 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:12.022 INFO [stderr] 
Dec 07 18:39:12.028 INFO [stderr] warning: variant is never constructed: `Root`
Dec 07 18:39:12.028 INFO [stderr]  --> src/lib.rs:7:5
Dec 07 18:39:12.028 INFO [stderr]   |
Dec 07 18:39:12.028 INFO [stderr] 7 |     Root(ValueType, u32),
Dec 07 18:39:12.028 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:12.028 INFO [stderr]   |
Dec 07 18:39:12.028 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 07 18:39:12.028 INFO [stderr] 
Dec 07 18:39:12.028 INFO [stderr] warning: variant is never constructed: `Link`
Dec 07 18:39:12.028 INFO [stderr]  --> src/lib.rs:8:5
Dec 07 18:39:12.028 INFO [stderr]   |
Dec 07 18:39:12.028 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Dec 07 18:39:12.028 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:12.028 INFO [stderr] 
Dec 07 18:39:12.092 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Dec 07 18:39:12.110 INFO [stderr] su: No module specific data is present
Dec 07 18:39:12.652 INFO running `"docker" "inspect" "fa4dcc067c0e78fa71cbb58e6b4df3c333b1174fa9d098da30ee62c6f57211a3"`
Dec 07 18:39:12.884 INFO running `"docker" "rm" "-f" "fa4dcc067c0e78fa71cbb58e6b4df3c333b1174fa9d098da30ee62c6f57211a3"`
Dec 07 18:39:13.112 INFO [stdout] fa4dcc067c0e78fa71cbb58e6b4df3c333b1174fa9d098da30ee62c6f57211a3
Dec 07 18:39:13.114 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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"`
Dec 07 18:39:13.654 INFO [stdout] 76a0c10dc7635c3676898aee793d7d5d06f935f8366f15f79b946d89ab052dbd
Dec 07 18:39:13.656 INFO running `"docker" "start" "-a" "76a0c10dc7635c3676898aee793d7d5d06f935f8366f15f79b946d89ab052dbd"`
Dec 07 18:39:15.161 INFO [stderr] usermod: no changes
Dec 07 18:39:15.260 INFO [stderr]    Compiling disjoint-set v0.0.2 (/source)
Dec 07 18:39:15.748 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 07 18:39:15.748 INFO [stderr]  --> src/lib.rs:3:5
Dec 07 18:39:15.748 INFO [stderr]   |
Dec 07 18:39:15.748 INFO [stderr] 3 | use std::rc::Rc;
Dec 07 18:39:15.748 INFO [stderr]   |     ^^^^^^^^^^^
Dec 07 18:39:15.748 INFO [stderr]   |
Dec 07 18:39:15.756 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 07 18:39:15.756 INFO [stderr] 
Dec 07 18:39:15.803 INFO [stderr] warning: unused variable: `p`
Dec 07 18:39:15.803 INFO [stderr]   --> src/lib.rs:37:18
Dec 07 18:39:15.803 INFO [stderr]    |
Dec 07 18:39:15.803 INFO [stderr] 37 |             Some(p) => return,
Dec 07 18:39:15.803 INFO [stderr]    |                  ^ help: consider using `_p` instead
Dec 07 18:39:15.803 INFO [stderr]    |
Dec 07 18:39:15.803 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 07 18:39:15.803 INFO [stderr] 
Dec 07 18:39:15.808 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:15.808 INFO [stderr]   --> src/lib.rs:35:13
Dec 07 18:39:15.808 INFO [stderr]    |
Dec 07 18:39:15.808 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Dec 07 18:39:15.808 INFO [stderr]    |             ----^^^
Dec 07 18:39:15.808 INFO [stderr]    |             |
Dec 07 18:39:15.808 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:15.808 INFO [stderr]    |
Dec 07 18:39:15.808 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 18:39:15.808 INFO [stderr] 
Dec 07 18:39:15.808 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:15.808 INFO [stderr]   --> src/lib.rs:53:13
Dec 07 18:39:15.808 INFO [stderr]    |
Dec 07 18:39:15.808 INFO [stderr] 53 |         let mut pos: usize;
Dec 07 18:39:15.808 INFO [stderr]    |             ----^^^
Dec 07 18:39:15.808 INFO [stderr]    |             |
Dec 07 18:39:15.808 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:15.808 INFO [stderr] 
Dec 07 18:39:15.812 INFO [stderr] warning: variant is never constructed: `Root`
Dec 07 18:39:15.812 INFO [stderr]  --> src/lib.rs:7:5
Dec 07 18:39:15.812 INFO [stderr]   |
Dec 07 18:39:15.812 INFO [stderr] 7 |     Root(ValueType, u32),
Dec 07 18:39:15.812 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:15.812 INFO [stderr]   |
Dec 07 18:39:15.812 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 07 18:39:15.812 INFO [stderr] 
Dec 07 18:39:15.812 INFO [stderr] warning: variant is never constructed: `Link`
Dec 07 18:39:15.812 INFO [stderr]  --> src/lib.rs:8:5
Dec 07 18:39:15.812 INFO [stderr]   |
Dec 07 18:39:15.812 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Dec 07 18:39:15.812 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:15.812 INFO [stderr] 
Dec 07 18:39:15.832 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:15.832 INFO [stderr]    --> src/lib.rs:106:5
Dec 07 18:39:15.832 INFO [stderr]     |
Dec 07 18:39:15.832 INFO [stderr] 106 |     ds.union(1, 2);
Dec 07 18:39:15.832 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 07 18:39:15.832 INFO [stderr]     |
Dec 07 18:39:15.832 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 07 18:39:15.832 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:15.832 INFO [stderr] 
Dec 07 18:39:15.832 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:15.832 INFO [stderr]    --> src/lib.rs:107:5
Dec 07 18:39:15.832 INFO [stderr]     |
Dec 07 18:39:15.832 INFO [stderr] 107 |     ds.union(2, 3);
Dec 07 18:39:15.832 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 07 18:39:15.832 INFO [stderr]     |
Dec 07 18:39:15.832 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:15.833 INFO [stderr] 
Dec 07 18:39:15.833 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:15.833 INFO [stderr]    --> src/lib.rs:118:5
Dec 07 18:39:15.833 INFO [stderr]     |
Dec 07 18:39:15.833 INFO [stderr] 118 |     ds.union(-1, 4);
Dec 07 18:39:15.833 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 07 18:39:15.833 INFO [stderr]     |
Dec 07 18:39:15.833 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:15.833 INFO [stderr] 
Dec 07 18:39:15.833 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:15.833 INFO [stderr]    --> src/lib.rs:119:5
Dec 07 18:39:15.833 INFO [stderr]     |
Dec 07 18:39:15.833 INFO [stderr] 119 |     ds.union(2, 4);
Dec 07 18:39:15.833 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 07 18:39:15.833 INFO [stderr]     |
Dec 07 18:39:15.833 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:15.833 INFO [stderr] 
Dec 07 18:39:16.604 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
Dec 07 18:39:16.608 INFO [stderr] su: No module specific data is present
Dec 07 18:39:17.243 INFO running `"docker" "inspect" "76a0c10dc7635c3676898aee793d7d5d06f935f8366f15f79b946d89ab052dbd"`
Dec 07 18:39:17.538 INFO running `"docker" "rm" "-f" "76a0c10dc7635c3676898aee793d7d5d06f935f8366f15f79b946d89ab052dbd"`
Dec 07 18:39:17.836 INFO [stdout] 76a0c10dc7635c3676898aee793d7d5d06f935f8366f15f79b946d89ab052dbd
Dec 07 18:39:17.844 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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"`
Dec 07 18:39:18.352 INFO [stdout] 63c32c03ff9736a8e31991e62277355e05fe718b5f3c157330c423c097bb3639
Dec 07 18:39:18.355 INFO running `"docker" "start" "-a" "63c32c03ff9736a8e31991e62277355e05fe718b5f3c157330c423c097bb3639"`
Dec 07 18:39:19.457 INFO [stderr] usermod: no changes
Dec 07 18:39:19.484 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 07 18:39:19.484 INFO [stderr]      Running /target/debug/deps/disjoint_set-2ca025b228fc7418
Dec 07 18:39:19.486 INFO [stdout] 
Dec 07 18:39:19.487 INFO [stdout] running 1 test
Dec 07 18:39:19.487 INFO [stdout] test it_works ... ok
Dec 07 18:39:19.487 INFO [stdout] 
Dec 07 18:39:19.487 INFO [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 07 18:39:19.487 INFO [stdout] 
Dec 07 18:39:19.492 INFO [stderr]    Doc-tests disjoint-set
Dec 07 18:39:20.054 INFO [stdout] 
Dec 07 18:39:20.054 INFO [stdout] running 0 tests
Dec 07 18:39:20.054 INFO [stdout] 
Dec 07 18:39:20.054 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 07 18:39:20.054 INFO [stdout] 
Dec 07 18:39:20.060 INFO [stderr] su: No module specific data is present
Dec 07 18:39:20.388 INFO running `"docker" "inspect" "63c32c03ff9736a8e31991e62277355e05fe718b5f3c157330c423c097bb3639"`
Dec 07 18:39:20.490 INFO running `"docker" "rm" "-f" "63c32c03ff9736a8e31991e62277355e05fe718b5f3c157330c423c097bb3639"`
Dec 07 18:39:20.628 INFO [stdout] 63c32c03ff9736a8e31991e62277355e05fe718b5f3c157330c423c097bb3639