[INFO] cloning repository https://github.com/kelnos/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kelnos/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkelnos%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkelnos%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2fe2f72e2e04bc74fdcb3f3936e6b8c51a27e14
[INFO] checking kelnos/rlox/e2fe2f72e2e04bc74fdcb3f3936e6b8c51a27e14 against master#021fc25b7a48f6051bee1e1f06c7a277e4de1cc9 for pr-151510
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkelnos%2Frlox" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kelnos/rlox
[INFO] finished tweaking git repo https://github.com/kelnos/rlox
[INFO] tweaked toml for git repo https://github.com/kelnos/rlox written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kelnos/rlox on toolchain 021fc25b7a48f6051bee1e1f06c7a277e4de1cc9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+021fc25b7a48f6051bee1e1f06c7a277e4de1cc9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kelnos/rlox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+021fc25b7a48f6051bee1e1f06c7a277e4de1cc9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+021fc25b7a48f6051bee1e1f06c7a277e4de1cc9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a4458caa52a201f6553efcd96a94c23d19cae69dcf0957eebc691d0d73fa9f2
[INFO] running `Command { std: "docker" "start" "-a" "2a4458caa52a201f6553efcd96a94c23d19cae69dcf0957eebc691d0d73fa9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a4458caa52a201f6553efcd96a94c23d19cae69dcf0957eebc691d0d73fa9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a4458caa52a201f6553efcd96a94c23d19cae69dcf0957eebc691d0d73fa9f2", kill_on_drop: false }`
[INFO] [stdout] 2a4458caa52a201f6553efcd96a94c23d19cae69dcf0957eebc691d0d73fa9f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+021fc25b7a48f6051bee1e1f06c7a277e4de1cc9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10a037ab127554a6784f4cc497aa8e3b2c0c3035fd893609a0752ce871faf269
[INFO] running `Command { std: "docker" "start" "-a" "10a037ab127554a6784f4cc497aa8e3b2c0c3035fd893609a0752ce871faf269", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking lazy_static v0.2.10
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find value `False` in this scope
[INFO] [stdout]    --> src/token.rs:214:17
[INFO] [stdout]     |
[INFO] [stdout] 214 |         let t = False.token(42);
[INFO] [stdout]     |                 ^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: you may want to use a bool value instead (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 214 -         let t = False.token(42);
[INFO] [stdout] 214 +         let t = false.token(42);
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this unit variant
[INFO] [stdout]     |
[INFO] [stdout] 204 +     use token::TokenType::False;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / lazy_static! {
[INFO] [stdout] 15 | |     static ref EXPECT_PRIMARY: Vec<TokenType> = {
[INFO] [stdout] 16 | |         vec![Number, Str, True, False, Nil, LeftParen, Identifier]
[INFO] [stdout] 17 | |     };
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / lazy_static! {
[INFO] [stdout] 15 | |     static ref EXPECT_PRIMARY: Vec<TokenType> = {
[INFO] [stdout] 16 | |         vec![Number, Str, True, False, Nil, LeftParen, Identifier]
[INFO] [stdout] 17 | |     };
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/scanner.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | / lazy_static! {
[INFO] [stdout] 39 | |     static ref KEYWORDS: HashMap<&'static str, fn(u32) -> Token> = {
[INFO] [stdout] 40 | |         let mut m = HashMap::new();
[INFO] [stdout] 41 | |         m.insert("and", create_and as fn(u32) -> Token);
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     };
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/scanner.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | / lazy_static! {
[INFO] [stdout] 39 | |     static ref KEYWORDS: HashMap<&'static str, fn(u32) -> Token> = {
[INFO] [stdout] 40 | |         let mut m = HashMap::new();
[INFO] [stdout] 41 | |         m.insert("and", create_and as fn(u32) -> Token);
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     };
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / lazy_static! {
[INFO] [stdout] 15 | |     static ref EXPECT_PRIMARY: Vec<TokenType> = {
[INFO] [stdout] 16 | |         vec![Number, Str, True, False, Nil, LeftParen, Identifier]
[INFO] [stdout] 17 | |     };
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / lazy_static! {
[INFO] [stdout] 15 | |     static ref EXPECT_PRIMARY: Vec<TokenType> = {
[INFO] [stdout] 16 | |         vec![Number, Str, True, False, Nil, LeftParen, Identifier]
[INFO] [stdout] 17 | |     };
[INFO] [stdout] 18 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/scanner.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | / lazy_static! {
[INFO] [stdout] 39 | |     static ref KEYWORDS: HashMap<&'static str, fn(u32) -> Token> = {
[INFO] [stdout] 40 | |         let mut m = HashMap::new();
[INFO] [stdout] 41 | |         m.insert("and", create_and as fn(u32) -> Token);
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     };
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `Once::new()` function is now preferred
[INFO] [stdout]   --> src/scanner.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | / lazy_static! {
[INFO] [stdout] 39 | |     static ref KEYWORDS: HashMap<&'static str, fn(u32) -> Token> = {
[INFO] [stdout] 40 | |         let mut m = HashMap::new();
[INFO] [stdout] 41 | |         m.insert("and", create_and as fn(u32) -> Token);
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |     };
[INFO] [stdout] 61 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:52:98
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn interpret(environment: Rc<RefCell<Environment>>, statements: Vec<Stmt>) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn interpret(environment: Rc<RefCell<Environment>>, statements: Vec<Stmt>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:64:67
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn execute_stmt(state: &mut State, stmt: &Stmt) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn execute_stmt(state: &mut State, stmt: &Stmt) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:75:79
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn execute_block(state: &mut State, statements: &Vec<Stmt>) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn execute_block(state: &mut State, statements: &Vec<Stmt>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:87:78
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn execute_expression_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn execute_expression_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:91:153
[INFO] [stdout]    |
[INFO] [stdout] 91 | ...increment: &Option<Box<Stmt>>, body: &Stmt) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn execute_for_stmt(state: &mut State, initializer: &Option<Box<Stmt>>, condition: &Expr, increment: &Option<Box<Stmt>>, body: &Stmt) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:111:128
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...ox<Stmt>, else_branch: &Option<Box<Stmt>>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn execute_if_stmt(state: &mut State, expr: &Expr, then_branch: &Box<Stmt>, else_branch: &Option<Box<Stmt>>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:126:73
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn execute_print_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn execute_print_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:133:100
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn execute_var_stmt(state: &mut State, name: &Token, initializer: &Option<Expr>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn execute_var_stmt(state: &mut State, name: &Token, initializer: &Option<Expr>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:143:81
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn evaluate_expression(state: &mut State, expr: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn evaluate_expression(state: &mut State, expr: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:161:92
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn evaluate_assign(state: &mut State, name: &Token, value: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn evaluate_assign(state: &mut State, name: &Token, value: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:172:109
[INFO] [stdout]     |
[INFO] [stdout] 172 | fn evaluate_binary(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 | fn evaluate_binary(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:187:83
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn arithmetic(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn arithmetic(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:218:80
[INFO] [stdout]     |
[INFO] [stdout] 218 | fn compare(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<Error>> {
[INFO] [stdout]     |                                                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 218 | fn compare(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:234:85
[INFO] [stdout]     |
[INFO] [stdout] 234 | fn evaluate_grouping(state: &mut State, expression: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 234 | fn evaluate_grouping(state: &mut State, expression: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:238:84
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn evaluate_literal(_state: &mut State, value: Rc<Value>) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn evaluate_literal(_state: &mut State, value: Rc<Value>) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:242:110
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn evaluate_logical(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn evaluate_logical(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:256:95
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn evaluate_unary(state: &mut State, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn evaluate_unary(state: &mut State, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:62:63
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn parse(tokens: Vec<Token>) -> Result<Vec<Stmt>, Vec<Box<Error>>> {
[INFO] [stdout]    |                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn parse(tokens: Vec<Token>) -> Result<Vec<Stmt>, Vec<Box<dyn Error>>> {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:105:74
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:113:78
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn var_declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn var_declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:124:72
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:140:75
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn if_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn if_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:153:78
[INFO] [stdout]     |
[INFO] [stdout] 153 | fn print_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 153 | fn print_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:160:78
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn while_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn while_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:169:76
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn for_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn for_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:192:83
[INFO] [stdout]     |
[INFO] [stdout] 192 | fn block_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Vec<Stmt>, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 192 | fn block_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Vec<Stmt>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:205:83
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn expression_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn expression_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:212:79
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn parse_expression(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn parse_expression(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:216:79
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn parse_assignment(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn parse_assignment(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:233:110
[INFO] [stdout]     |
[INFO] [stdout] 233 |                 matches: &[TokenType], parse_operand: fn(&mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>>,
[INFO] [stdout]     |                                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 233 |                 matches: &[TokenType], parse_operand: fn(&mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>>,
[INFO] [stdout]     |                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:234:82
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 expr_builder: fn(Expr, Token, Expr) -> Expr) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 expr_builder: fn(Expr, Token, Expr) -> Expr) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:242:71
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn parse_or(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn parse_or(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:246:72
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn parse_and(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn parse_and(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:250:77
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn parse_equality(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn parse_equality(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:254:79
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn parse_comparison(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn parse_comparison(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:258:77
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn parse_addition(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn parse_addition(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:262:83
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn parse_multiplication(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn parse_multiplication(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:266:74
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn parse_unary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn parse_unary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:273:76
[INFO] [stdout]     |
[INFO] [stdout] 273 | fn parse_primary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 273 | fn parse_primary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:321:94
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn consume(iter: &mut Peekable<IntoIter<Token>>, matches: &[TokenType]) -> Result<Token, Box<Error>> {
[INFO] [stdout]     |                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn consume(iter: &mut Peekable<IntoIter<Token>>, matches: &[TokenType]) -> Result<Token, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scanner.rs:178:56
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn scan(source: &String) -> Result<Vec<Token>, Box<Error>> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn scan(source: &String) -> Result<Vec<Token>, Box<dyn Error>> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:24:90
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run(environment: Rc<RefCell<Environment>>, source: &String) -> Result<(), Vec<Box<Error>>> {
[INFO] [stdout]    |                                                                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run(environment: Rc<RefCell<Environment>>, source: &String) -> Result<(), Vec<Box<dyn Error>>> {
[INFO] [stdout]    |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:52:98
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn interpret(environment: Rc<RefCell<Environment>>, statements: Vec<Stmt>) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn interpret(environment: Rc<RefCell<Environment>>, statements: Vec<Stmt>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:64:67
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn execute_stmt(state: &mut State, stmt: &Stmt) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn execute_stmt(state: &mut State, stmt: &Stmt) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:75:79
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn execute_block(state: &mut State, statements: &Vec<Stmt>) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn execute_block(state: &mut State, statements: &Vec<Stmt>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:87:78
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn execute_expression_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn execute_expression_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter.rs:91:153
[INFO] [stdout]    |
[INFO] [stdout] 91 | ...increment: &Option<Box<Stmt>>, body: &Stmt) -> Result<(), Box<Error>> {
[INFO] [stdout]    |                                                                  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn execute_for_stmt(state: &mut State, initializer: &Option<Box<Stmt>>, condition: &Expr, increment: &Option<Box<Stmt>>, body: &Stmt) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                                                                                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:111:128
[INFO] [stdout]     |
[INFO] [stdout] 111 | ...ox<Stmt>, else_branch: &Option<Box<Stmt>>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn execute_if_stmt(state: &mut State, expr: &Expr, then_branch: &Box<Stmt>, else_branch: &Option<Box<Stmt>>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:126:73
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn execute_print_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn execute_print_stmt(state: &mut State, expr: &Expr) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:133:100
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn execute_var_stmt(state: &mut State, name: &Token, initializer: &Option<Expr>) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 133 | fn execute_var_stmt(state: &mut State, name: &Token, initializer: &Option<Expr>) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:143:81
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn evaluate_expression(state: &mut State, expr: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn evaluate_expression(state: &mut State, expr: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:161:92
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn evaluate_assign(state: &mut State, name: &Token, value: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn evaluate_assign(state: &mut State, name: &Token, value: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:172:109
[INFO] [stdout]     |
[INFO] [stdout] 172 | fn evaluate_binary(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 172 | fn evaluate_binary(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:187:83
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn arithmetic(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 187 | fn arithmetic(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:218:80
[INFO] [stdout]     |
[INFO] [stdout] 218 | fn compare(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<Error>> {
[INFO] [stdout]     |                                                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 218 | fn compare(left: &Value, operator: &Token, right: &Value) -> Result<Value, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:234:85
[INFO] [stdout]     |
[INFO] [stdout] 234 | fn evaluate_grouping(state: &mut State, expression: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 234 | fn evaluate_grouping(state: &mut State, expression: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/interpreter.rs:42:30
[INFO] [stdout]    |
[INFO] [stdout] 42 |         write!(f, "{}", self.description())
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:238:84
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn evaluate_literal(_state: &mut State, value: Rc<Value>) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 238 | fn evaluate_literal(_state: &mut State, value: Rc<Value>) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:242:110
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn evaluate_logical(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn evaluate_logical(state: &mut State, left: &Expr, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/interpreter.rs:256:95
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn evaluate_unary(state: &mut State, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<Error>> {
[INFO] [stdout]     |                                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn evaluate_unary(state: &mut State, operator: &Token, right: &Expr) -> Result<Rc<Value>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:62:63
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn parse(tokens: Vec<Token>) -> Result<Vec<Stmt>, Vec<Box<Error>>> {
[INFO] [stdout]    |                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn parse(tokens: Vec<Token>) -> Result<Vec<Stmt>, Vec<Box<dyn Error>>> {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:105:74
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:113:78
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn var_declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn var_declaration(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:124:72
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:140:75
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn if_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn if_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:153:78
[INFO] [stdout]     |
[INFO] [stdout] 153 | fn print_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 153 | fn print_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:160:78
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn while_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn while_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:169:76
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn for_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 169 | fn for_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:192:83
[INFO] [stdout]     |
[INFO] [stdout] 192 | fn block_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Vec<Stmt>, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 192 | fn block_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Vec<Stmt>, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:205:83
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn expression_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn expression_statement(iter: &mut Peekable<IntoIter<Token>>) -> Result<Stmt, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:212:79
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn parse_expression(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn parse_expression(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:216:79
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn parse_assignment(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn parse_assignment(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:233:110
[INFO] [stdout]     |
[INFO] [stdout] 233 |                 matches: &[TokenType], parse_operand: fn(&mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>>,
[INFO] [stdout]     |                                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 233 |                 matches: &[TokenType], parse_operand: fn(&mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>>,
[INFO] [stdout]     |                                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:234:82
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 expr_builder: fn(Expr, Token, Expr) -> Expr) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 expr_builder: fn(Expr, Token, Expr) -> Expr) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:242:71
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn parse_or(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn parse_or(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:246:72
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn parse_and(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn parse_and(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:250:77
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn parse_equality(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn parse_equality(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:254:79
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn parse_comparison(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                               ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn parse_comparison(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:258:77
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn parse_addition(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn parse_addition(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:262:83
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn parse_multiplication(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 262 | fn parse_multiplication(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:266:74
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn parse_unary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 266 | fn parse_unary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:273:76
[INFO] [stdout]     |
[INFO] [stdout] 273 | fn parse_primary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<Error>> {
[INFO] [stdout]     |                                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 273 | fn parse_primary(iter: &mut Peekable<IntoIter<Token>>) -> Result<Expr, Box<dyn Error>> {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:321:94
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn consume(iter: &mut Peekable<IntoIter<Token>>, matches: &[TokenType]) -> Result<Token, Box<Error>> {
[INFO] [stdout]     |                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn consume(iter: &mut Peekable<IntoIter<Token>>, matches: &[TokenType]) -> Result<Token, Box<dyn Error>> {
[INFO] [stdout]     |                                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/scanner.rs:178:56
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn scan(source: &String) -> Result<Vec<Token>, Box<Error>> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn scan(source: &String) -> Result<Vec<Token>, Box<dyn Error>> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:24:90
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run(environment: Rc<RefCell<Environment>>, source: &String) -> Result<(), Vec<Box<Error>>> {
[INFO] [stdout]    |                                                                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run(environment: Rc<RefCell<Environment>>, source: &String) -> Result<(), Vec<Box<dyn Error>>> {
[INFO] [stdout]    |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/interpreter.rs:42:30
[INFO] [stdout]    |
[INFO] [stdout] 42 |         write!(f, "{}", self.description())
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/parser.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |         write!(f, "{}", self.description())
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:274:70
[INFO] [stdout]     |
[INFO] [stdout] 274 |     iter.next().ok_or(ParseError::new(&*EXPECT_PRIMARY, None) as Box<Error>).and_then(|token| {
[INFO] [stdout]     |                                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 274 |     iter.next().ok_or(ParseError::new(&*EXPECT_PRIMARY, None) as Box<dyn Error>).and_then(|token| {
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:326:66
[INFO] [stdout]     |
[INFO] [stdout] 326 |             Err(ParseError::new_arr(matches, Some(token)) as Box<Error>)
[INFO] [stdout]     |                                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 326 |             Err(ParseError::new_arr(matches, Some(token)) as Box<dyn Error>)
[INFO] [stdout]     |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:328:64
[INFO] [stdout]     |
[INFO] [stdout] 328 |     }).unwrap_or(Err(ParseError::new_arr(matches, None) as Box<Error>))
[INFO] [stdout]     |                                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 328 |     }).unwrap_or(Err(ParseError::new_arr(matches, None) as Box<dyn Error>))
[INFO] [stdout]     |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/parser.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |         write!(f, "{}", self.description())
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:274:70
[INFO] [stdout]     |
[INFO] [stdout] 274 |     iter.next().ok_or(ParseError::new(&*EXPECT_PRIMARY, None) as Box<Error>).and_then(|token| {
[INFO] [stdout]     |                                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 274 |     iter.next().ok_or(ParseError::new(&*EXPECT_PRIMARY, None) as Box<dyn Error>).and_then(|token| {
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]   --> src/callable.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn call(arguments: &Vec<&Value>) -> Value {
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:326:66
[INFO] [stdout]     |
[INFO] [stdout] 326 |             Err(ParseError::new_arr(matches, Some(token)) as Box<Error>)
[INFO] [stdout]     |                                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 326 |             Err(ParseError::new_arr(matches, Some(token)) as Box<dyn Error>)
[INFO] [stdout]     |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:328:64
[INFO] [stdout]     |
[INFO] [stdout] 328 |     }).unwrap_or(Err(ParseError::new_arr(matches, None) as Box<Error>))
[INFO] [stdout]     |                                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 328 |     }).unwrap_or(Err(ParseError::new_arr(matches, None) as Box<dyn Error>))
[INFO] [stdout]     |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ConstLexemeTokenType`
[INFO] [stdout]    --> src/token.rs:208:17
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let t = ConstLexemeTokenType::And.token(42);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ use of undeclared type `ConstLexemeTokenType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]   --> src/function.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn call(arguments: &Vec<&Value>) -> Value {
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `VariableTokenType`
[INFO] [stdout]    --> src/token.rs:221:17
[INFO] [stdout]     |
[INFO] [stdout] 221 |         let t = VariableTokenType::String.token(
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ use of undeclared type `VariableTokenType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]   --> src/callable.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn call(arguments: &Vec<&Value>) -> Value {
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]   --> src/function.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn call(arguments: &Vec<&Value>) -> Value {
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `location` is never read
[INFO] [stdout]   --> src/interpreter.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct RuntimeError {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 26 |     location: Token,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `expected` is never read
[INFO] [stdout]   --> src/parser.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct ParseError {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 22 |     expected: Vec<TokenType>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlox` (lib test) due to 3 previous errors; 53 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "10a037ab127554a6784f4cc497aa8e3b2c0c3035fd893609a0752ce871faf269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10a037ab127554a6784f4cc497aa8e3b2c0c3035fd893609a0752ce871faf269", kill_on_drop: false }`
[INFO] [stdout] 10a037ab127554a6784f4cc497aa8e3b2c0c3035fd893609a0752ce871faf269
