Ignore two-phase-reservation-sharing-interference-2.rs in Polonius compare mode

This is just a difference from the test construction, it's ignore-compare-mode-nll and manually checks migrate/nll over edition2015/2018.

This failure is because the `migrate2015` and `migrate2018`  revisions are ran with `-Zpolonius`. There is no actual difference in the errors output by NLLs and Polonius.

Author: lqd

src/test/ui/borrowck/two-phase-reservation-sharing-interference-2.migrate2015.stderr

@@ -1,5 +1,5 @@
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:18:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:19:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here
@@ -11,7 +11,7 @@ LL |     v.extend(shared);
    |     mutable borrow occurs here
 
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:28:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:29:5
    |
 LL |     v.extend(&v);
    |     ^^------^--^
@@ -21,7 +21,7 @@ LL |     v.extend(&v);
    |     mutable borrow occurs here
 
 warning: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:39:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:40:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here

src/test/ui/borrowck/two-phase-reservation-sharing-interference-2.migrate2018.stderr

@@ -1,5 +1,5 @@
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:18:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:19:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here
@@ -11,7 +11,7 @@ LL |     v.extend(shared);
    |     mutable borrow occurs here
 
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:28:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:29:5
    |
 LL |     v.extend(&v);
    |     ^^------^--^
@@ -21,7 +21,7 @@ LL |     v.extend(&v);
    |     mutable borrow occurs here
 
 warning: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:39:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:40:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here

src/test/ui/borrowck/two-phase-reservation-sharing-interference-2.nll2015.stderr

@@ -1,5 +1,5 @@
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:18:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:19:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here
@@ -10,7 +10,7 @@ LL |     v.extend(shared);
    |     mutable borrow occurs here
 
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:28:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:29:5
    |
 LL |     v.extend(&v);
    |     ^^------^--^
@@ -20,7 +20,7 @@ LL |     v.extend(&v);
    |     mutable borrow occurs here
 
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:39:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:40:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here

src/test/ui/borrowck/two-phase-reservation-sharing-interference-2.nll2018.stderr

@@ -1,5 +1,5 @@
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:18:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:19:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here
@@ -10,7 +10,7 @@ LL |     v.extend(shared);
    |     mutable borrow occurs here
 
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:28:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:29:5
    |
 LL |     v.extend(&v);
    |     ^^------^--^
@@ -20,7 +20,7 @@ LL |     v.extend(&v);
    |     mutable borrow occurs here
 
 error[E0502]: cannot borrow `v` as mutable because it is also borrowed as immutable
-  --> $DIR/two-phase-reservation-sharing-interference-2.rs:39:5
+  --> $DIR/two-phase-reservation-sharing-interference-2.rs:40:5
    |
 LL |     let shared = &v;
    |                  -- immutable borrow occurs here

src/test/ui/borrowck/two-phase-reservation-sharing-interference-2.rs

@@ -3,6 +3,7 @@
 // everyone else.
 
 //ignore-compare-mode-nll
+//ignore-compare-mode-polonius
 
 //revisions: migrate2015 migrate2018 nll2015 nll2018