Sway-lib-core warnings during forc build

Hi guys, I’m using new forc v0.39 and I have these warnings during the build using forc build

Predicate build output
warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:485:21
    |
483 | 
484 |     fn lsh(self, other: u64) -> Self {
485 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width thirty two, will lose precision.
486 |     }
487 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:488:21
    |
486 | 
487 |     fn rsh(self, other: u64) -> Self {
488 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width thirty two, will lose precision.
489 |     }
490 | }
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:494:21
    |
492 | 
493 |     fn lsh(self, other: u64) -> Self {
494 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width sixteen, will lose precision.
495 |     }
496 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:497:21
    |
495 | 
496 |     fn rsh(self, other: u64) -> Self {
497 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width sixteen, will lose precision.
498 |     }
499 | }
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:503:21
    |
501 | 
502 |     fn lsh(self, other: u64) -> Self {
503 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width eight, will lose precision.
504 |     }
505 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:506:21
    |
504 | 
505 |     fn rsh(self, other: u64) -> Self {
506 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width eight, will lose precision.
507 |     }
508 | }
    |
____

warning
 --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/lib.sw:0:1
  |
0 | library;
  | - Module privacy rules will soon change to make modules private by default.
                                            You can enable the new behavior with the --experimental-private-modules flag, which will become the default behavior in a later release.
                                            More details are available in the related RFC: https://github.com/FuelLabs/sway-rfcs/blob/master/rfcs/0008-private-modules.md
1 | 
2 | pub mod primitives;
  |
____

  Compiled library "core" with 7 warnings.
 Compiling library std (git+https://github.com/fuellabs/sway?tag=v0.39.0#7a095280e7e1c0bfbbfc201867896e720aab7209)
warning
 --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-std/src/lib.sw:0:1
  |
0 | library;
  | - Module privacy rules will soon change to make modules private by default.
                                            You can enable the new behavior with the --experimental-private-modules flag, which will become the default behavior in a later release.
                                            More details are available in the related RFC: https://github.com/FuelLabs/sway-rfcs/blob/master/rfcs/0008-private-modules.md
1 | 
2 | pub mod error_signals;
  |
____

  Compiled library "std" with 1 warning.
 Compiling predicate limit-order-predicate (/Users/alexey/projects/fuel/ethglobal-predicate)
warning
 --> /Users/alexey/projects/fuel/ethglobal-predicate/src/main.sw:0:1
  |
0 | predicate;
  | - Module privacy rules will soon change to make modules private by default.
                                            You can enable the new behavior with the --experimental-private-modules flag, which will become the default behavior in a later release.
                                            More details are available in the related RFC: https://github.com/FuelLabs/sway-rfcs/blob/master/rfcs/0008-private-modules.md
1 | mod utils;
  |
____

  Compiled predicate "limit-order-predicate" with 1 warning.
  Finished debug in 1.173160708s
 predicate limit-order-predicate
      Bytecode size: 9692 bytes
      Predicate root: 0x36c7cc4eb4be98901b9755f57e0c0a1daa56529d7e954a694f5d1e6c50a301f6
^^/p/f/ethglobal-predicate >>> rm -rf out target  && forc build && cargo test                                                                     (*master+14) 13:50:24 
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: constants
  WARNING! unused manifest key: constants
 Compiling library core (/Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core)
warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:485:21
    |
483 | 
484 |     fn lsh(self, other: u64) -> Self {
485 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width thirty two, will lose precision.
486 |     }
487 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:488:21
    |
486 | 
487 |     fn rsh(self, other: u64) -> Self {
488 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width thirty two, will lose precision.
489 |     }
490 | }
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:494:21
    |
492 | 
493 |     fn lsh(self, other: u64) -> Self {
494 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width sixteen, will lose precision.
495 |     }
496 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:497:21
    |
495 | 
496 |     fn rsh(self, other: u64) -> Self {
497 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width sixteen, will lose precision.
498 |     }
499 | }
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:503:21
    |
501 | 
502 |     fn lsh(self, other: u64) -> Self {
503 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width eight, will lose precision.
504 |     }
505 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:506:21
    |
504 | 
505 |     fn rsh(self, other: u64) -> Self {
506 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width eight, will lose precision.
507 |     }
508 | }
    |
____

warning
 --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/lib.sw:0:1
  |
0 | library;
  | - Module privacy rules will soon change to make modules private by default.
                                            You can enable the new behavior with the --experimental-private-modules flag, which will become the default behavior in a later release.
                                            More details are available in the related RFC: https://github.com/FuelLabs/sway-rfcs/blob/master/rfcs/0008-private-modules.md
1 | 
2 | pub mod primitives;
  |
____

  Compiled library "core" with 7 warnings.
 Compiling library std (git+https://github.com/fuellabs/sway?tag=v0.39.0#7a095280e7e1c0bfbbfc201867896e720aab7209)
warning
 --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-std/src/lib.sw:0:1
  |
0 | library;
  | - Module privacy rules will soon change to make modules private by default.
                                            You can enable the new behavior with the --experimental-private-modules flag, which will become the default behavior in a later release.
                                            More details are available in the related RFC: https://github.com/FuelLabs/sway-rfcs/blob/master/rfcs/0008-private-modules.md
1 | 
2 | pub mod error_signals;
  |
____

  Compiled library "std" with 1 warning.
 Compiling predicate limit-order-predicate (/Users/alexey/projects/fuel/ethglobal-predicate)
warning
 --> /Users/alexey/projects/fuel/ethglobal-predicate/src/main.sw:0:1
  |
0 | predicate;
  | - Module privacy rules will soon change to make modules private by default.
                                            You can enable the new behavior with the --experimental-private-modules flag, which will become the default behavior in a later release.
                                            More details are available in the related RFC: https://github.com/FuelLabs/sway-rfcs/blob/master/rfcs/0008-private-modules.md
1 | mod utils;
  |
____

  Compiled predicate "limit-order-predicate" with 1 warning.

Also if I follow the suggestion of warnings to use this command to build forc build --experimental-private-modules , I will have these warnings:

Warnings during `forc build --experimental-private-modules `command
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: project.target
  WARNING! unused manifest key: constants
  WARNING! unused manifest key: constants
 Compiling library core (/Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core)
warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:485:21
    |
483 | 
484 |     fn lsh(self, other: u64) -> Self {
485 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width thirty two, will lose precision.
486 |     }
487 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:488:21
    |
486 | 
487 |     fn rsh(self, other: u64) -> Self {
488 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width thirty two, will lose precision.
489 |     }
490 | }
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:494:21
    |
492 | 
493 |     fn lsh(self, other: u64) -> Self {
494 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width sixteen, will lose precision.
495 |     }
496 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:497:21
    |
495 | 
496 |     fn rsh(self, other: u64) -> Self {
497 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width sixteen, will lose precision.
498 |     }
499 | }
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:503:21
    |
501 | 
502 |     fn lsh(self, other: u64) -> Self {
503 |         __lsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width eight, will lose precision.
504 |     }
505 |     fn rsh(self, other: u64) -> Self {
    |
____

warning
   --> /Users/alexey/.forc/git/checkouts/std-9be0d6062747ea7/7a095280e7e1c0bfbbfc201867896e720aab7209/sway-lib-core/src/ops.sw:506:21
    |
504 | 
505 |     fn rsh(self, other: u64) -> Self {
506 |         __rsh(self, other)
    |                     ----- This cast, from integer type of width sixty four to integer type of width eight, will lose precision.
507 |     }
508 | }
    |
____

  Compiled library "core" with 6 warnings.
 Compiling library std (git+https://github.com/fuellabs/sway?tag=v0.39.0#7a095280e7e1c0bfbbfc201867896e720aab7209)
 Compiling predicate limit-order-predicate (/Users/alexey/projects/fuel/ethglobal-predicate)
  Finished debug in 1.074838375s
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