[INFO] cloning repository https://github.com/plungingChode/open-plang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/plungingChode/open-plang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplungingChode%2Fopen-plang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplungingChode%2Fopen-plang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c49adaaa4c3ff9b9579d6ddfc9c9f2e237547197
[INFO] checking plungingChode/open-plang against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplungingChode%2Fopen-plang" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/plungingChode/open-plang
[INFO] finished tweaking git repo https://github.com/plungingChode/open-plang
[INFO] tweaked toml for git repo https://github.com/plungingChode/open-plang written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/plungingChode/open-plang on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/plungingChode/open-plang 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8971d5bf6ea8eb2ca5d9b67ab3a711e90c25421e2e070261167c9f5043b47813
[INFO] running `Command { std: "docker" "start" "-a" "8971d5bf6ea8eb2ca5d9b67ab3a711e90c25421e2e070261167c9f5043b47813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8971d5bf6ea8eb2ca5d9b67ab3a711e90c25421e2e070261167c9f5043b47813", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8971d5bf6ea8eb2ca5d9b67ab3a711e90c25421e2e070261167c9f5043b47813", kill_on_drop: false }`
[INFO] [stdout] 8971d5bf6ea8eb2ca5d9b67ab3a711e90c25421e2e070261167c9f5043b47813
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64077a72054e83984ad73c5e3bf0bc665c05bb71247792dc22f8350ed3aa3fd9
[INFO] running `Command { std: "docker" "start" "-a" "64077a72054e83984ad73c5e3bf0bc665c05bb71247792dc22f8350ed3aa3fd9", kill_on_drop: false }`
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking plang-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `LexerToken`
[INFO] [stdout]  --> src/plang/mod.rs:9:31
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use self::lexer::{ Lexer, LexerToken };
[INFO] [stdout]   |                               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TokenType`, `Token`, and `Tokenizer`
[INFO] [stdout]   --> src/plang/mod.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use self::tokenizer::{ Tokenizer, Token, TokenType };
[INFO] [stdout]    |                            ^^^^^^^^^  ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LexerToken`
[INFO] [stdout]  --> src/plang/mod.rs:9:31
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use self::lexer::{ Lexer, LexerToken };
[INFO] [stdout]   |                               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TokenType`, `Token`, and `Tokenizer`
[INFO] [stdout]   --> src/plang/mod.rs:10:28
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use self::tokenizer::{ Tokenizer, Token, TokenType };
[INFO] [stdout]    |                            ^^^^^^^^^  ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Type {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 33 | impl dyn Type {
[INFO] [stdout]    |      +++
[INFO] [stdout] help: you might have intended to implement this trait for a given type
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Type for /* Type */ {
[INFO] [stdout]    |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Type {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 33 | impl dyn Type {
[INFO] [stdout]    |      +++
[INFO] [stdout] help: you might have intended to implement this trait for a given type
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Type for /* Type */ {
[INFO] [stdout]    |           ++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:77:50
[INFO] [stdout]    |
[INFO] [stdout] 77 |             return VarDecl::new(names, Box::from(Type::null()), Error::Name);
[INFO] [stdout]    |                                                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 77 |             return VarDecl::new(names, Box::from(<dyn Type>::null()), Error::Name);
[INFO] [stdout]    |                                                  ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:85:54
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 return VarDecl::new(names, Box::from(Type::null()), Error::Name);
[INFO] [stdout]    |                                                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 85 |                 return VarDecl::new(names, Box::from(<dyn Type>::null()), Error::Name);
[INFO] [stdout]    |                                                      ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:92:50
[INFO] [stdout]    |
[INFO] [stdout] 92 |             return VarDecl::new(names, Box::from(Type::null()), Error::Colon);
[INFO] [stdout]    |                                                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 92 |             return VarDecl::new(names, Box::from(<dyn Type>::null()), Error::Colon);
[INFO] [stdout]    |                                                  ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:98:47
[INFO] [stdout]    |
[INFO] [stdout] 98 |         return VarDecl::new(vec![], Box::from(Type::null()), Error::None);
[INFO] [stdout]    |                                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 98 |         return VarDecl::new(vec![], Box::from(<dyn Type>::null()), Error::None);
[INFO] [stdout]    |                                               ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:77:50
[INFO] [stdout]    |
[INFO] [stdout] 77 |             return VarDecl::new(names, Box::from(Type::null()), Error::Name);
[INFO] [stdout]    |                                                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 77 |             return VarDecl::new(names, Box::from(<dyn Type>::null()), Error::Name);
[INFO] [stdout]    |                                                  ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:85:54
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 return VarDecl::new(names, Box::from(Type::null()), Error::Name);
[INFO] [stdout]    |                                                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 85 |                 return VarDecl::new(names, Box::from(<dyn Type>::null()), Error::Name);
[INFO] [stdout]    |                                                      ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:92:50
[INFO] [stdout]    |
[INFO] [stdout] 92 |             return VarDecl::new(names, Box::from(Type::null()), Error::Colon);
[INFO] [stdout]    |                                                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 92 |             return VarDecl::new(names, Box::from(<dyn Type>::null()), Error::Colon);
[INFO] [stdout]    |                                                  ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/plang/variable.rs:98:47
[INFO] [stdout]    |
[INFO] [stdout] 98 |         return VarDecl::new(vec![], Box::from(Type::null()), Error::None);
[INFO] [stdout]    |                                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] 98 |         return VarDecl::new(vec![], Box::from(<dyn Type>::null()), Error::None);
[INFO] [stdout]    |                                               ++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn can_copy(&self, var: Box<dyn Type>) -> bool { unimplemented!() }
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn copy(&self, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn unary_optype(&self, op: UnaryOperator) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn unary_apply(&self, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn binary_optype(&self, op: BinaryOperator, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:54:49
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn binary_optype(&self, op: BinaryOperator, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:55:28
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn binary_apply(&self, op: BinaryOperator, t: Box<dyn Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimpl...
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/plang/variable.rs:55:48
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn binary_apply(&self, op: BinaryOperator, t: Box<dyn Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimpl...
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var1`
[INFO] [stdout]   --> src/plang/variable.rs:55:66
[INFO] [stdout]    |
[INFO] [stdout] 55 | ...Operator, t: Box<dyn Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_var1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var2`
[INFO] [stdout]   --> src/plang/variable.rs:55:87
[INFO] [stdout]    |
[INFO] [stdout] 55 | ...Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:56:35
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn binary_has_accessor(&self, op: BinaryOperator, x: Box<dyn Type>) -> bool { unimplemented!() }
[INFO] [stdout]    |                                   ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/plang/variable.rs:56:55
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn binary_has_accessor(&self, op: BinaryOperator, x: Box<dyn Type>) -> bool { unimplemented!() }
[INFO] [stdout]    |                                                       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/plang/variable.rs:57:42
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/plang/variable.rs:57:60
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                                            ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/plang/variable.rs:57:78
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                                                              ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/plang/lexer.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout]  63 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     pub fn is_data(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     pub fn is_ident(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 141 |     pub fn is_keyword(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 145 |     pub fn sval(&self) -> &'a str {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     pub fn nval(&self) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     pub fn fval(&self) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn ival(&self) -> i64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     pub fn lexical(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `concat_special` is never read
[INFO] [stdout]   --> src/plang/tokenizer.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Tokenizer<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 47 |     concat_special: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tokenizer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from` and `with_options` are never used
[INFO] [stdout]   --> src/plang/tokenizer.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]    | ---------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn from(s: &'a str) -> Tokenizer<'a>
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn with_options(s: &'a str, options: i32) -> Tokenizer<'a>
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Declarations` is never constructed
[INFO] [stdout]  --> src/plang/declarations.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Declarations<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]  --> src/plang/variable.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Type` is never used
[INFO] [stdout]   --> src/plang/variable.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Type {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `null` is never used
[INFO] [stdout]   --> src/plang/variable.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Type {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 34 |     const fn null() -> NullType {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NullType` is never constructed
[INFO] [stdout]   --> src/plang/variable.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct NullType;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VarDecl` is never constructed
[INFO] [stdout]   --> src/plang/variable.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct VarDecl {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `parse` are never used
[INFO] [stdout]   --> src/plang/variable.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl VarDecl {
[INFO] [stdout]    | ------------ associated functions in this implementation
[INFO] [stdout] 69 |     fn new(names: Vec<String>, vtype: Box<dyn Type>, err: Error) -> VarDecl {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn parse(lex: &mut Lexer) -> VarDecl {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Environment` is never constructed
[INFO] [stdout]  --> src/plang/environment.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Environment {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnaryOperator` is never used
[INFO] [stdout]  --> src/plang/unary_operator.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum UnaryOperator {
[INFO] [stdout]   |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `op` and `render` are never used
[INFO] [stdout]   --> src/plang/unary_operator.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl UnaryOperator {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] 12 |     pub const fn op(&self) -> &'static str {
[INFO] [stdout]    |                  ^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn render(&self, e: String /* Expression */) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BinaryOperator` is never used
[INFO] [stdout]  --> src/plang/binary_operator.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum BinaryOperator {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `op` and `render` are never used
[INFO] [stdout]   --> src/plang/binary_operator.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl BinaryOperator {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 10 |     pub const fn op(&self) -> &'static str {
[INFO] [stdout]    |                  ^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn render(&self, a: String /* Expression */, b: String /* Expression */) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/plang/tokenizer.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> Token {
[INFO] [stdout]    |                       ^^^^ the lifetime is elided here      ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> Token<'_> {
[INFO] [stdout]    |                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/plang/tokenizer.rs:30:27
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn from_str(sval: &str, ttype: TokenType) -> Token {
[INFO] [stdout]    |                           ^^^^                       ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn from_str(sval: &str, ttype: TokenType) -> Token<'_> {
[INFO] [stdout]    |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn can_copy(&self, var: Box<dyn Type>) -> bool { unimplemented!() }
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn copy(&self, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn unary_optype(&self, op: UnaryOperator) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn unary_apply(&self, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn binary_optype(&self, op: BinaryOperator, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var`
[INFO] [stdout]   --> src/plang/variable.rs:54:49
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn binary_optype(&self, op: BinaryOperator, var: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:55:28
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn binary_apply(&self, op: BinaryOperator, t: Box<dyn Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimpl...
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/plang/variable.rs:55:48
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn binary_apply(&self, op: BinaryOperator, t: Box<dyn Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimpl...
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var1`
[INFO] [stdout]   --> src/plang/variable.rs:55:66
[INFO] [stdout]    |
[INFO] [stdout] 55 | ...Operator, t: Box<dyn Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_var1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `var2`
[INFO] [stdout]   --> src/plang/variable.rs:55:87
[INFO] [stdout]    |
[INFO] [stdout] 55 | ...Type>, var1: Box<dyn Type>, var2: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:56:35
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn binary_has_accessor(&self, op: BinaryOperator, x: Box<dyn Type>) -> bool { unimplemented!() }
[INFO] [stdout]    |                                   ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/plang/variable.rs:56:55
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn binary_has_accessor(&self, op: BinaryOperator, x: Box<dyn Type>) -> bool { unimplemented!() }
[INFO] [stdout]    |                                                       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/plang/variable.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/plang/variable.rs:57:42
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/plang/variable.rs:57:60
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                                            ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/plang/variable.rs:57:78
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn access(&self, op: BinaryOperator, a: Box<dyn Type>, b: Box<dyn Type>, c: Box<dyn Type>) -> Box<dyn Type> { unimplemented!() }
[INFO] [stdout]    |                                                                              ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/plang/lexer.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl<'a> LexerToken<'a> {
[INFO] [stdout]    | ----------------------- associated function in this implementation
[INFO] [stdout] 43 |     #[cfg(test)]
[INFO] [stdout] 44 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> LexerToken {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/plang/lexer.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout]  63 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 128 |     pub fn is_data(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     pub fn is_ident(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 141 |     pub fn is_keyword(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 145 |     pub fn sval(&self) -> &'a str {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     pub fn nval(&self) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     pub fn fval(&self) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn ival(&self) -> i64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     pub fn lexical(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `concat_special` is never read
[INFO] [stdout]   --> src/plang/tokenizer.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct Tokenizer<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 47 |     concat_special: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tokenizer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Declarations` is never constructed
[INFO] [stdout]  --> src/plang/declarations.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Declarations<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]  --> src/plang/variable.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Type` is never used
[INFO] [stdout]   --> src/plang/variable.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Type {
[INFO] [stdout]    |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `null` is never used
[INFO] [stdout]   --> src/plang/variable.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Type {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 34 |     const fn null() -> NullType {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NullType` is never constructed
[INFO] [stdout]   --> src/plang/variable.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct NullType;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VarDecl` is never constructed
[INFO] [stdout]   --> src/plang/variable.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct VarDecl {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `parse` are never used
[INFO] [stdout]   --> src/plang/variable.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl VarDecl {
[INFO] [stdout]    | ------------ associated functions in this implementation
[INFO] [stdout] 69 |     fn new(names: Vec<String>, vtype: Box<dyn Type>, err: Error) -> VarDecl {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn parse(lex: &mut Lexer) -> VarDecl {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Environment` is never constructed
[INFO] [stdout]  --> src/plang/environment.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Environment {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnaryOperator` is never used
[INFO] [stdout]  --> src/plang/unary_operator.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum UnaryOperator {
[INFO] [stdout]   |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `op` and `render` are never used
[INFO] [stdout]   --> src/plang/unary_operator.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl UnaryOperator {
[INFO] [stdout]    | ------------------ methods in this implementation
[INFO] [stdout] 12 |     pub const fn op(&self) -> &'static str {
[INFO] [stdout]    |                  ^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn render(&self, e: String /* Expression */) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BinaryOperator` is never used
[INFO] [stdout]  --> src/plang/binary_operator.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum BinaryOperator {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `op` and `render` are never used
[INFO] [stdout]   --> src/plang/binary_operator.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl BinaryOperator {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 10 |     pub const fn op(&self) -> &'static str {
[INFO] [stdout]    |                  ^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn render(&self, a: String /* Expression */, b: String /* Expression */) -> String {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/plang/lexer.rs:44:23
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> LexerToken {
[INFO] [stdout]    |                       ^^^^ the lifetime is elided here      ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> LexerToken<'_> {
[INFO] [stdout]    |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/plang/tokenizer.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> Token {
[INFO] [stdout]    |                       ^^^^ the lifetime is elided here      ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn from(sval: &str, nval: f64, ttype: TokenType) -> Token<'_> {
[INFO] [stdout]    |                                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/plang/tokenizer.rs:30:27
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn from_str(sval: &str, ttype: TokenType) -> Token {
[INFO] [stdout]    |                           ^^^^                       ^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn from_str(sval: &str, ttype: TokenType) -> Token<'_> {
[INFO] [stdout]    |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "64077a72054e83984ad73c5e3bf0bc665c05bb71247792dc22f8350ed3aa3fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64077a72054e83984ad73c5e3bf0bc665c05bb71247792dc22f8350ed3aa3fd9", kill_on_drop: false }`
[INFO] [stdout] 64077a72054e83984ad73c5e3bf0bc665c05bb71247792dc22f8350ed3aa3fd9
