Dec 07 18:39:07.144 INFO testing disjoint-set-0.0.2 against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 07 18:39:07.144 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 18:39:07.690 INFO [stdout] 8a76b2cb6d30903f8fc02337ab286f60c99f2e484d5f6001323c0362d1e4d497
Dec 07 18:39:07.692 INFO running `"docker" "start" "-a" "8a76b2cb6d30903f8fc02337ab286f60c99f2e484d5f6001323c0362d1e4d497"`
Dec 07 18:39:09.155 INFO [stderr] usermod: no changes
Dec 07 18:39:09.216 INFO [stderr]    Compiling disjoint-set v0.0.2 (/source)
Dec 07 18:39:09.769 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 07 18:39:09.769 INFO [stderr]  --> src/lib.rs:3:5
Dec 07 18:39:09.769 INFO [stderr]   |
Dec 07 18:39:09.769 INFO [stderr] 3 | use std::rc::Rc;
Dec 07 18:39:09.769 INFO [stderr]   |     ^^^^^^^^^^^
Dec 07 18:39:09.769 INFO [stderr]   |
Dec 07 18:39:09.769 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 07 18:39:09.769 INFO [stderr] 
Dec 07 18:39:09.793 INFO [stderr] warning: unused variable: `p`
Dec 07 18:39:09.793 INFO [stderr]   --> src/lib.rs:37:18
Dec 07 18:39:09.793 INFO [stderr]    |
Dec 07 18:39:09.793 INFO [stderr] 37 |             Some(p) => return,
Dec 07 18:39:09.793 INFO [stderr]    |                  ^ help: consider using `_p` instead
Dec 07 18:39:09.793 INFO [stderr]    |
Dec 07 18:39:09.793 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 07 18:39:09.793 INFO [stderr] 
Dec 07 18:39:09.793 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:09.793 INFO [stderr]   --> src/lib.rs:35:13
Dec 07 18:39:09.793 INFO [stderr]    |
Dec 07 18:39:09.793 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Dec 07 18:39:09.793 INFO [stderr]    |             ----^^^
Dec 07 18:39:09.793 INFO [stderr]    |             |
Dec 07 18:39:09.793 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:09.793 INFO [stderr]    |
Dec 07 18:39:09.793 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 18:39:09.793 INFO [stderr] 
Dec 07 18:39:09.796 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:09.796 INFO [stderr]   --> src/lib.rs:53:13
Dec 07 18:39:09.796 INFO [stderr]    |
Dec 07 18:39:09.796 INFO [stderr] 53 |         let mut pos: usize;
Dec 07 18:39:09.796 INFO [stderr]    |             ----^^^
Dec 07 18:39:09.796 INFO [stderr]    |             |
Dec 07 18:39:09.796 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:09.796 INFO [stderr] 
Dec 07 18:39:09.796 INFO [stderr] warning: variant is never constructed: `Root`
Dec 07 18:39:09.796 INFO [stderr]  --> src/lib.rs:7:5
Dec 07 18:39:09.796 INFO [stderr]   |
Dec 07 18:39:09.796 INFO [stderr] 7 |     Root(ValueType, u32),
Dec 07 18:39:09.796 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:09.796 INFO [stderr]   |
Dec 07 18:39:09.796 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 07 18:39:09.796 INFO [stderr] 
Dec 07 18:39:09.796 INFO [stderr] warning: variant is never constructed: `Link`
Dec 07 18:39:09.796 INFO [stderr]  --> src/lib.rs:8:5
Dec 07 18:39:09.796 INFO [stderr]   |
Dec 07 18:39:09.796 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Dec 07 18:39:09.796 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:09.796 INFO [stderr] 
Dec 07 18:39:09.830 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 07 18:39:09.837 INFO [stderr] su: No module specific data is present
Dec 07 18:39:10.278 INFO running `"docker" "inspect" "8a76b2cb6d30903f8fc02337ab286f60c99f2e484d5f6001323c0362d1e4d497"`
Dec 07 18:39:10.526 INFO running `"docker" "rm" "-f" "8a76b2cb6d30903f8fc02337ab286f60c99f2e484d5f6001323c0362d1e4d497"`
Dec 07 18:39:10.739 INFO [stdout] 8a76b2cb6d30903f8fc02337ab286f60c99f2e484d5f6001323c0362d1e4d497
Dec 07 18:39:10.742 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 18:39:11.236 INFO [stdout] 5f10ae8d4d8494a5a86901e2af5863e5e6216df84ebaf04ba96068ad428d514e
Dec 07 18:39:11.236 INFO running `"docker" "start" "-a" "5f10ae8d4d8494a5a86901e2af5863e5e6216df84ebaf04ba96068ad428d514e"`
Dec 07 18:39:12.281 INFO [stderr] usermod: no changes
Dec 07 18:39:12.334 INFO [stderr]    Compiling disjoint-set v0.0.2 (/source)
Dec 07 18:39:12.994 INFO [stderr] warning: unused import: `std::rc::Rc`
Dec 07 18:39:12.994 INFO [stderr]  --> src/lib.rs:3:5
Dec 07 18:39:12.994 INFO [stderr]   |
Dec 07 18:39:12.994 INFO [stderr] 3 | use std::rc::Rc;
Dec 07 18:39:12.994 INFO [stderr]   |     ^^^^^^^^^^^
Dec 07 18:39:12.994 INFO [stderr]   |
Dec 07 18:39:12.994 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 07 18:39:12.994 INFO [stderr] 
Dec 07 18:39:13.028 INFO [stderr] warning: unused variable: `p`
Dec 07 18:39:13.028 INFO [stderr]   --> src/lib.rs:37:18
Dec 07 18:39:13.028 INFO [stderr]    |
Dec 07 18:39:13.028 INFO [stderr] 37 |             Some(p) => return,
Dec 07 18:39:13.028 INFO [stderr]    |                  ^ help: consider using `_p` instead
Dec 07 18:39:13.028 INFO [stderr]    |
Dec 07 18:39:13.028 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 07 18:39:13.028 INFO [stderr] 
Dec 07 18:39:13.036 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:13.036 INFO [stderr]   --> src/lib.rs:35:13
Dec 07 18:39:13.036 INFO [stderr]    |
Dec 07 18:39:13.036 INFO [stderr] 35 |         let mut len = &mut self.set_size;
Dec 07 18:39:13.036 INFO [stderr]    |             ----^^^
Dec 07 18:39:13.036 INFO [stderr]    |             |
Dec 07 18:39:13.036 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:13.036 INFO [stderr]    |
Dec 07 18:39:13.036 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 18:39:13.036 INFO [stderr] 
Dec 07 18:39:13.036 INFO [stderr] warning: variable does not need to be mutable
Dec 07 18:39:13.036 INFO [stderr]   --> src/lib.rs:53:13
Dec 07 18:39:13.036 INFO [stderr]    |
Dec 07 18:39:13.036 INFO [stderr] 53 |         let mut pos: usize;
Dec 07 18:39:13.036 INFO [stderr]    |             ----^^^
Dec 07 18:39:13.036 INFO [stderr]    |             |
Dec 07 18:39:13.036 INFO [stderr]    |             help: remove this `mut`
Dec 07 18:39:13.036 INFO [stderr] 
Dec 07 18:39:13.037 INFO [stderr] warning: variant is never constructed: `Root`
Dec 07 18:39:13.037 INFO [stderr]  --> src/lib.rs:7:5
Dec 07 18:39:13.037 INFO [stderr]   |
Dec 07 18:39:13.037 INFO [stderr] 7 |     Root(ValueType, u32),
Dec 07 18:39:13.037 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:13.037 INFO [stderr]   |
Dec 07 18:39:13.037 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 07 18:39:13.037 INFO [stderr] 
Dec 07 18:39:13.037 INFO [stderr] warning: variant is never constructed: `Link`
Dec 07 18:39:13.037 INFO [stderr]  --> src/lib.rs:8:5
Dec 07 18:39:13.037 INFO [stderr]   |
Dec 07 18:39:13.037 INFO [stderr] 8 |     Link(Box<SetItem<ValueType>>)
Dec 07 18:39:13.037 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 07 18:39:13.037 INFO [stderr] 
Dec 07 18:39:13.046 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:13.047 INFO [stderr]    --> src/lib.rs:106:5
Dec 07 18:39:13.047 INFO [stderr]     |
Dec 07 18:39:13.047 INFO [stderr] 106 |     ds.union(1, 2);
Dec 07 18:39:13.047 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 07 18:39:13.047 INFO [stderr]     |
Dec 07 18:39:13.047 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 07 18:39:13.047 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:13.047 INFO [stderr] 
Dec 07 18:39:13.047 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:13.047 INFO [stderr]    --> src/lib.rs:107:5
Dec 07 18:39:13.047 INFO [stderr]     |
Dec 07 18:39:13.047 INFO [stderr] 107 |     ds.union(2, 3);
Dec 07 18:39:13.047 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 07 18:39:13.047 INFO [stderr]     |
Dec 07 18:39:13.047 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:13.047 INFO [stderr] 
Dec 07 18:39:13.047 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:13.047 INFO [stderr]    --> src/lib.rs:118:5
Dec 07 18:39:13.047 INFO [stderr]     |
Dec 07 18:39:13.047 INFO [stderr] 118 |     ds.union(-1, 4);
Dec 07 18:39:13.047 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 07 18:39:13.047 INFO [stderr]     |
Dec 07 18:39:13.047 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:13.047 INFO [stderr] 
Dec 07 18:39:13.047 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 07 18:39:13.047 INFO [stderr]    --> src/lib.rs:119:5
Dec 07 18:39:13.048 INFO [stderr]     |
Dec 07 18:39:13.048 INFO [stderr] 119 |     ds.union(2, 4);
Dec 07 18:39:13.048 INFO [stderr]     |     ^^^^^^^^^^^^^^^
Dec 07 18:39:13.048 INFO [stderr]     |
Dec 07 18:39:13.048 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 07 18:39:13.048 INFO [stderr] 
Dec 07 18:39:13.722 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
Dec 07 18:39:13.725 INFO [stderr] su: No module specific data is present
Dec 07 18:39:14.572 INFO running `"docker" "inspect" "5f10ae8d4d8494a5a86901e2af5863e5e6216df84ebaf04ba96068ad428d514e"`
Dec 07 18:39:14.883 INFO running `"docker" "rm" "-f" "5f10ae8d4d8494a5a86901e2af5863e5e6216df84ebaf04ba96068ad428d514e"`
Dec 07 18:39:15.223 INFO [stdout] 5f10ae8d4d8494a5a86901e2af5863e5e6216df84ebaf04ba96068ad428d514e
Dec 07 18:39:15.225 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 18:39:15.584 INFO [stdout] f3e8a35a01d3d22db88daa3963feeeee3ebf479a12ce36060f592c30aca4c109
Dec 07 18:39:15.590 INFO running `"docker" "start" "-a" "f3e8a35a01d3d22db88daa3963feeeee3ebf479a12ce36060f592c30aca4c109"`
Dec 07 18:39:17.012 INFO [stderr] usermod: no changes
Dec 07 18:39:17.056 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 07 18:39:17.072 INFO [stdout] 
Dec 07 18:39:17.072 INFO [stdout] running 1 test
Dec 07 18:39:17.072 INFO [stdout] test it_works ... ok
Dec 07 18:39:17.072 INFO [stdout] 
Dec 07 18:39:17.072 INFO [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 07 18:39:17.072 INFO [stdout] 
Dec 07 18:39:17.072 INFO [stderr]      Running /target/debug/deps/disjoint_set-ff728e46b7a12f9e
Dec 07 18:39:17.076 INFO [stderr]    Doc-tests disjoint-set
Dec 07 18:39:18.058 INFO [stdout] 
Dec 07 18:39:18.058 INFO [stdout] running 0 tests
Dec 07 18:39:18.058 INFO [stdout] 
Dec 07 18:39:18.058 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 07 18:39:18.058 INFO [stdout] 
Dec 07 18:39:18.067 INFO [stderr] su: No module specific data is present
Dec 07 18:39:18.972 INFO running `"docker" "inspect" "f3e8a35a01d3d22db88daa3963feeeee3ebf479a12ce36060f592c30aca4c109"`
Dec 07 18:39:19.202 INFO running `"docker" "rm" "-f" "f3e8a35a01d3d22db88daa3963feeeee3ebf479a12ce36060f592c30aca4c109"`
Dec 07 18:39:19.437 INFO [stdout] f3e8a35a01d3d22db88daa3963feeeee3ebf479a12ce36060f592c30aca4c109