warning: this expression creates a reference which is immediately dereferenced by the compiler --> halo2_proofs/src/plonk/prover.rs:390:29 | 390 | ... &domain, | ^^^^^^^ help: change this to: `domain` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow = note: `-W clippy::needless-borrow` implied by `-W clippy::all`

warning: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` --> halo2_proofs/src/plonk/prover.rs:369:22 | 369 | let advice = std::mem::replace(&mut self.advice, Vec::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut self.advice)` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_with_default

warning: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` --> halo2_proofs/src/plonk/prover.rs:368:24 | 368 | let instance = std::mem::replace(&mut self.instance, Vec::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut self.instance)` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_with_default = note: `-W clippy::mem-replace-with-default` implied by `-W clippy::all`

warning: this `if` has identical blocks --> halo2_proofs/src/plonk/prover.rs:268:55 | 268 | if column_indices.contains(&column_index) { | _______________________________________________________^ 269 | | // TODO: Check that column_index in witness is Some 270 | | // TODO: Check that the column length is `params.n()` 271 | | } else { | |_____________^ | note: same as this --> halo2_proofs/src/plonk/prover.rs:271:20 | 271 | } else { | ____________________^ 272 | | // TODO: Check that column_index in witness is None 273 | | }; | |_____________^ = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else = note: `-W clippy::if-same-then-else` implied by `-W clippy::all`

warning: unnecessary `if let` since only the `Some` variant of the iterator element is used --> halo2_proofs/src/plonk/prover.rs:253:13 | 253 | for witness_column in witness_circuit { | ^ --------------- help: try: `witness_circuit.iter().flatten()` | _____________| | | 254 | | if let Some(witness_column) = witness_column { 255 | | if witness_column.len() != self.params.n() as usize { 256 | | return Err(Error::Other(format!( ... | 262 | | } 263 | | } | |_____________^ | help: ...and remove the `if let` statement in the for loop --> halo2_proofs/src/plonk/prover.rs:254:17 | 254 | / if let Some(witness_column) = witness_column { 255 | | if witness_column.len() != self.params.n() as usize { 256 | | return Err(Error::Other(format!( 257 | | "unexpected length in witness_column. Got {}, expected {}", ... | 261 | | } 262 | | } | |_________________^ = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_flatten = note: `-W clippy::manual-flatten` implied by `-W clippy::all`

warning: useless use of `format!` --> halo2_proofs/src/plonk/prover.rs:243:37 | 243 | return Err(Error::Other(format!("witness.len() != advice.len()"))); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"witness.len() != advice.len()".to_string()` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format = note: `-W clippy::useless-format` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/prover.rs:203:18 | 203 | witness: Vec<Vec<Option<Polynomial<Assigned<Scheme::Scalar>, LagrangeCoeff>>>>, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity

warning: redundant closure --> halo2_proofs/src/plonk/circuit.rs:2294:22 | 2294 | .map(|p| sealed::Phase(p)) | ^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `sealed::Phase` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure

warning: redundant closure --> halo2_proofs/src/plonk/circuit.rs:2289:22 | 2289 | .map(|p| sealed::Phase(p)) | ^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `sealed::Phase` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure = note: `-W clippy::redundant-closure` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/circuit.rs:2128:10 | 2128 | ) -> ( | __________^ 2129 | | Queries, 2130 | | Vec<Gate<F>>, 2131 | | Vec<lookup::Argument<F>>, 2132 | | Vec<shuffle::Argument<F>>, 2133 | | ) { | |_____^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity

warning: casting to the same type is unnecessary (`usize` -> `usize`) --> halo2_proofs/src/plonk/circuit.rs:2025:25 | 2025 | usable_rows: 0..n as usize - (cs.blinding_factors() + 1), | ^^^^^^^^^^ help: try: `n` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`) --> halo2_proofs/src/plonk/circuit.rs:2024:37 | 2024 | selectors: vec![vec![false; n as usize]; cs.num_selectors], | ^^^^^^^^^^ help: try: `n` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast = note: `-W clippy::unnecessary-cast` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/circuit.rs:2000:6 | 2000 | ) -> Result< | ______^ 2001 | | ( 2002 | | CompiledCircuitV2<F>, 2003 | | ConcreteCircuit::Config, ... | 2006 | | Error, 2007 | | > { | |_^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/circuit.rs:1928:10 | 1928 | ) -> Result<Vec<Option<Polynomial<Assigned<F>, LagrangeCoeff>>>, Error> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity = note: `-W clippy::type-complexity` implied by `-W clippy::all`

warning: methods with the following characteristics: (`to_*` and `self` type is not `Copy`) usually take `self` by reference --> halo2_proofs/src/plonk/circuit.rs:1738:32 | 1738 | fn to_expression<F: Field>(&mut self, expr: &ExpressionMid<F>) -> Expression<F> { | ^^^^^^^^^ | = help: consider choosing a less ambiguous name = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention = note: `-W clippy::wrong-self-convention` implied by `-W clippy::all`

warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true --> halo2_proofs/src/plonk/circuit.rs:892:1 | 892 | impl<F> Into<ExpressionMid<F>> for Expression<F> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: replace the `Into` implentation with `From<plonk::circuit::Expression<F>>` = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into = note: `-W clippy::from-over-into` implied by `-W clippy::all`

warning: unused variable: `advice_column` --> halo2_proofs/src/plonk/prover.rs:267:28 | 267 | for (column_index, advice_column) in witness.iter().enumerate() { | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_advice_column` | = note: `#[warn(unused_variables)]` on by default

warning: this expression creates a reference which is immediately dereferenced by the compiler --> halo2_proofs/tests/frontend_backend_split.rs:578:40 | 578 | let strategy = SingleStrategy::new(&verifier_params); | ^^^^^^^^^^^^^^^^ help: change this to: `verifier_params` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow

warning: this expression creates a reference which is immediately dereferenced by the compiler --> halo2_proofs/tests/frontend_backend_split.rs:511:40 | 511 | let strategy = SingleStrategy::new(&verifier_params); | ^^^^^^^^^^^^^^^^ help: change this to: `verifier_params` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow = note: `-W clippy::needless-borrow` implied by `-W clippy::all`

warning: redundant clone --> halo2_proofs/tests/frontend_backend_split.rs:496:18 | 496 | &[circuit.clone()], | ^^^^^^^^ help: remove this | note: this value is dropped without further use --> halo2_proofs/tests/frontend_backend_split.rs:496:11 | 496 | &[circuit.clone()], | ^^^^^^^ = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_clone = note: `-W clippy::redundant-clone` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/tests/frontend_backend_split.rs:65:10 | 65 | ) -> Result<(AssignedCell<F, F>, [AssignedCell<F, F>; 4]), Error> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity = note: `-W clippy::type-complexity` implied by `-W clippy::all`

warning: variable does not need to be mutable --> halo2_proofs/tests/frontend_backend_split.rs:567:9 | 567 | let mut transcript = prover.create_proof().unwrap(); | ----^^^^^^^^^^ | | | help: remove this `mut`

warning: variable does not need to be mutable --> halo2_proofs/tests/frontend_backend_split.rs:548:9 | 548 | let mut transcript = Blake2bWrite::<_, G1Affine, Challenge255<_>>::init(vec![]); | ----^^^^^^^^^^ | | | help: remove this `mut` | = note: `#[warn(unused_mut)]` on by default

warning: unused variable: `instance` --> halo2_proofs/tests/frontend_backend_split.rs:426:29 | 426 | for (i, instance) in instance_copy.iter().enumerate() { | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instance`

warning: unused variable: `i` --> halo2_proofs/tests/frontend_backend_split.rs:426:26 | 426 | for (i, instance) in instance_copy.iter().enumerate() { | ^ help: if this is intentional, prefix it with an underscore: `_i` | = note: `#[warn(unused_variables)]` on by default

warning: unused import: `EncodedChallenge` --> halo2_proofs/tests/frontend_backend_split.rs:19:46 | 19 | Blake2bRead, Blake2bWrite, Challenge255, EncodedChallenge, TranscriptReadBuffer, | ^^^^^^^^^^^^^^^^

warning: unused import: `halo2_proofs::poly::VerificationStrategy` --> halo2_proofs/tests/frontend_backend_split.rs:17:5 | 17 | use halo2_proofs::poly::VerificationStrategy; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused import: `Verifier` --> halo2_proofs/tests/frontend_backend_split.rs:15:78 | 15 | use halo2_proofs::poly::commitment::{CommitmentScheme, ParamsProver, Prover, Verifier}; | ^^^^^^^^

warning: unused import: `Prover` --> halo2_proofs/tests/frontend_backend_split.rs:15:70 | 15 | use halo2_proofs::poly::commitment::{CommitmentScheme, ParamsProver, Prover, Verifier}; | ^^^^^^

warning: unused import: `ParamsVerifierKZG` --> halo2_proofs/tests/frontend_backend_split.rs:441:75 | 441 | use halo2_proofs::poly::kzg::commitment::{KZGCommitmentScheme, ParamsKZG, ParamsVerifierKZG}; | ^^^^^^^^^^^^^^^^^

warning: unused import: `std::marker::PhantomData` --> halo2_proofs/tests/frontend_backend_split.rs:24:5 | 24 | use std::marker::PhantomData; | ^^^^^^^^^^^^^^^^^^^^^^^^

warning: unused imports: `OsRng`, `RngCore` --> halo2_proofs/tests/frontend_backend_split.rs:22:17 | 22 | use rand_core::{OsRng, RngCore}; | ^^^^^ ^^^^^^^

warning: unused import: `CommitmentScheme` --> halo2_proofs/tests/frontend_backend_split.rs:15:38 | 15 | use halo2_proofs::poly::commitment::{CommitmentScheme, ParamsProver, Prover, Verifier}; | ^^^^^^^^^^^^^^^^

warning: unused imports: `Assigned`, `CompiledCircuitV2`, `ConstraintSystemV2Backend`, `ProvingKey`, `TableColumn`, `VerifyingKey` --> halo2_proofs/tests/frontend_backend_split.rs:11:13 | 11 | Advice, Assigned, Challenge, Circuit, Column, CompiledCircuitV2, ConstraintSystem, | ^^^^^^^^ ^^^^^^^^^^^^^^^^^ 12 | ConstraintSystemV2Backend, Error, Expression, FirstPhase, Fixed, Instance, ProverV2, | ^^^^^^^^^^^^^^^^^^^^^^^^^ 13 | ProvingKey, SecondPhase, Selector, TableColumn, VerifyingKey, WitnessCalculator, | ^^^^^^^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^^

warning: unused import: `Cell` --> halo2_proofs/tests/frontend_backend_split.rs:7:43 | 7 | use halo2_proofs::circuit::{AssignedCell, Cell, Layouter, Region, SimpleFloorPlanner, Value}; | ^^^^

warning: unused imports: `FromUniformBytes`, `WithSmallOrderMulGroup` --> halo2_proofs/tests/frontend_backend_split.rs:5:10 | 5 | use ff::{FromUniformBytes, WithSmallOrderMulGroup}; | ^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^

warning: unused import: `assert_matches::assert_matches` --> halo2_proofs/tests/frontend_backend_split.rs:4:5 | 4 | use assert_matches::assert_matches; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `#[warn(unused_imports)]` on by default

warning: this expression creates a reference which is immediately dereferenced by the compiler --> halo2_proofs/src/plonk/prover.rs:390:29 | 390 | ... &domain, | ^^^^^^^ help: change this to: `domain` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow = note: `-W clippy::needless-borrow` implied by `-W clippy::all`

warning: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` --> halo2_proofs/src/plonk/prover.rs:369:22 | 369 | let advice = std::mem::replace(&mut self.advice, Vec::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut self.advice)` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_with_default

warning: replacing a value of type `T` with `T::default()` is better expressed using `std::mem::take` --> halo2_proofs/src/plonk/prover.rs:368:24 | 368 | let instance = std::mem::replace(&mut self.instance, Vec::new()); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `std::mem::take(&mut self.instance)` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_with_default = note: `-W clippy::mem-replace-with-default` implied by `-W clippy::all`

warning: this `if` has identical blocks --> halo2_proofs/src/plonk/prover.rs:268:55 | 268 | if column_indices.contains(&column_index) { | _______________________________________________________^ 269 | | // TODO: Check that column_index in witness is Some 270 | | // TODO: Check that the column length is `params.n()` 271 | | } else { | |_____________^ | note: same as this --> halo2_proofs/src/plonk/prover.rs:271:20 | 271 | } else { | ____________________^ 272 | | // TODO: Check that column_index in witness is None 273 | | }; | |_____________^ = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else = note: `-W clippy::if-same-then-else` implied by `-W clippy::all`

warning: unnecessary `if let` since only the `Some` variant of the iterator element is used --> halo2_proofs/src/plonk/prover.rs:253:13 | 253 | for witness_column in witness_circuit { | ^ --------------- help: try: `witness_circuit.iter().flatten()` | _____________| | | 254 | | if let Some(witness_column) = witness_column { 255 | | if witness_column.len() != self.params.n() as usize { 256 | | return Err(Error::Other(format!( ... | 262 | | } 263 | | } | |_____________^ | help: ...and remove the `if let` statement in the for loop --> halo2_proofs/src/plonk/prover.rs:254:17 | 254 | / if let Some(witness_column) = witness_column { 255 | | if witness_column.len() != self.params.n() as usize { 256 | | return Err(Error::Other(format!( 257 | | "unexpected length in witness_column. Got {}, expected {}", ... | 261 | | } 262 | | } | |_________________^ = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_flatten = note: `-W clippy::manual-flatten` implied by `-W clippy::all`

warning: useless use of `format!` --> halo2_proofs/src/plonk/prover.rs:243:37 | 243 | return Err(Error::Other(format!("witness.len() != advice.len()"))); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"witness.len() != advice.len()".to_string()` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format = note: `-W clippy::useless-format` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/prover.rs:203:18 | 203 | witness: Vec<Vec<Option<Polynomial<Assigned<Scheme::Scalar>, LagrangeCoeff>>>>, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity

warning: redundant closure --> halo2_proofs/src/plonk/circuit.rs:2294:22 | 2294 | .map(|p| sealed::Phase(p)) | ^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `sealed::Phase` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure

warning: redundant closure --> halo2_proofs/src/plonk/circuit.rs:2289:22 | 2289 | .map(|p| sealed::Phase(p)) | ^^^^^^^^^^^^^^^^^^^^ help: replace the closure with the function itself: `sealed::Phase` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure = note: `-W clippy::redundant-closure` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/circuit.rs:2128:10 | 2128 | ) -> ( | __________^ 2129 | | Queries, 2130 | | Vec<Gate<F>>, 2131 | | Vec<lookup::Argument<F>>, 2132 | | Vec<shuffle::Argument<F>>, 2133 | | ) { | |_____^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity

warning: casting to the same type is unnecessary (`usize` -> `usize`) --> halo2_proofs/src/plonk/circuit.rs:2025:25 | 2025 | usable_rows: 0..n as usize - (cs.blinding_factors() + 1), | ^^^^^^^^^^ help: try: `n` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

warning: casting to the same type is unnecessary (`usize` -> `usize`) --> halo2_proofs/src/plonk/circuit.rs:2024:37 | 2024 | selectors: vec![vec![false; n as usize]; cs.num_selectors], | ^^^^^^^^^^ help: try: `n` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast = note: `-W clippy::unnecessary-cast` implied by `-W clippy::all`

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/circuit.rs:2000:6 | 2000 | ) -> Result< | ______^ 2001 | | ( 2002 | | CompiledCircuitV2<F>, 2003 | | ConcreteCircuit::Config, ... | 2006 | | Error, 2007 | | > { | |_^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity

warning: very complex type used. Consider factoring parts into `type` definitions --> halo2_proofs/src/plonk/circuit.rs:1928:10 | 1928 | ) -> Result<Vec<Option<Polynomial<Assigned<F>, LagrangeCoeff>>>, Error> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity = note: `-W clippy::type-complexity` implied by `-W clippy::all`

warning: methods with the following characteristics: (`to_*` and `self` type is not `Copy`) usually take `self` by reference --> halo2_proofs/src/plonk/circuit.rs:1738:32 | 1738 | fn to_expression<F: Field>(&mut self, expr: &ExpressionMid<F>) -> Expression<F> { | ^^^^^^^^^ | = help: consider choosing a less ambiguous name = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention = note: `-W clippy::wrong-self-convention` implied by `-W clippy::all`

warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true --> halo2_proofs/src/plonk/circuit.rs:892:1 | 892 | impl<F> Into<ExpressionMid<F>> for Expression<F> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: replace the `Into` implentation with `From<plonk::circuit::Expression<F>>` = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into = note: `-W clippy::from-over-into` implied by `-W clippy::all`

warning: unused variable: `advice_column` --> halo2_proofs/src/plonk/prover.rs:267:28 | 267 | for (column_index, advice_column) in witness.iter().enumerate() { | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_advice_column` | = note: `#[warn(unused_variables)]` on by default

The following actions uses node12 which is deprecated and will be forced to run on node16: actions-rs/toolchain@v1, actions-rs/clippy-check@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/