[INFO] updating cached repository Nercury/twig-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Nercury/twig-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Nercury/twig-rs" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Nercury/twig-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Nercury/twig-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Nercury/twig-rs" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Nercury/twig-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Nercury/twig-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 810c6df0ed0d32d7312b5fa92186d62378906ab1
[INFO] sha for GitHub repo Nercury/twig-rs: 810c6df0ed0d32d7312b5fa92186d62378906ab1
[INFO] validating manifest of Nercury/twig-rs on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Nercury/twig-rs on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Nercury/twig-rs
[INFO] finished frobbing Nercury/twig-rs
[INFO] frobbed toml for Nercury/twig-rs written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Nercury/twig-rs/Cargo.toml
[INFO] started frobbing Nercury/twig-rs
[INFO] finished frobbing Nercury/twig-rs
[INFO] frobbed toml for Nercury/twig-rs written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Nercury/twig-rs/Cargo.toml
[INFO] crate Nercury/twig-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Nercury/twig-rs against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-2/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Nercury/twig-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 51a5c9457cd3d9aa68513233920176e8eb3d9f82d22e7bf8d66a591d0838d1c4
[INFO] running `"docker" "start" "-a" "51a5c9457cd3d9aa68513233920176e8eb3d9f82d22e7bf8d66a591d0838d1c4"`
[INFO] [stderr]     Checking winapi v0.2.5
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking log v0.3.3
[INFO] [stderr]     Checking sha1 v0.1.1
[INFO] [stderr]     Checking difference v0.4.1
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking little v0.3.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking kernel32-sys v0.2.1
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking term v0.2.13
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking twig v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `little::Instruction`
[INFO] [stderr]  --> src/extension/core/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use little::Instruction;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `little::Instruction`
[INFO] [stderr]  --> src/extension/core/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use little::Instruction;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/tokens/lexer/iter.rs:282:50
[INFO] [stderr]     |
[INFO] [stderr] 282 |                 TokenValueRef::Text(text_content.trim_right())
[INFO] [stderr]     |                                                  ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/tokens/lexer/iter.rs:413:66
[INFO] [stderr]     |
[INFO] [stderr] 413 |                 let op_str = self.code[loc + start .. loc + end].trim_right();
[INFO] [stderr]     |                                                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/tokens/lexer/iter.rs:661:41
[INFO] [stderr]     |
[INFO] [stderr] 661 |                             text = text.trim_right()
[INFO] [stderr]     |                                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/tokens/lexer/iter.rs:282:50
[INFO] [stderr]     |
[INFO] [stderr] 282 |                 TokenValueRef::Text(text_content.trim_right())
[INFO] [stderr]     |                                                  ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/tokens/lexer/iter.rs:413:66
[INFO] [stderr]     |
[INFO] [stderr] 413 |                 let op_str = self.code[loc + start .. loc + end].trim_right();
[INFO] [stderr]     |                                                                  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/tokens/lexer/iter.rs:661:41
[INFO] [stderr]     |
[INFO] [stderr] 661 |                             text = text.trim_right()
[INFO] [stderr]     |                                         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/nodes/parser/expr.rs:379:5
[INFO] [stderr]     |
[INFO] [stderr] 379 | /     Ok(Expr::new_at(
[INFO] [stderr] 380 | |         ExprValue::GetAttr {
[INFO] [stderr] 381 | |             node: Box::new(node),
[INFO] [stderr] 382 | |             arg: Box::new(arg),
[INFO] [stderr] ...   |
[INFO] [stderr] 386 | |         line
[INFO] [stderr] 387 | |     ))
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/nodes/parser/expr.rs:379:5
[INFO] [stderr]     |
[INFO] [stderr] 379 | /     Ok(Expr::new_at(
[INFO] [stderr] 380 | |         ExprValue::GetAttr {
[INFO] [stderr] 381 | |             node: Box::new(node),
[INFO] [stderr] 382 | |             arg: Box::new(arg),
[INFO] [stderr] ...   |
[INFO] [stderr] 386 | |         line
[INFO] [stderr] 387 | |     ))
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/value/ops.rs:130:38
[INFO] [stderr]     |
[INFO] [stderr] 130 |             match value[starts_at..].trim_right().parse() {
[INFO] [stderr]     |                                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Expect`
[INFO] [stderr]  --> src/nodes/parser/body.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use Expect;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Expect`
[INFO] [stderr]  --> src/nodes/parser/expr.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use Expect;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/engine/mod.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::{ Read, Write };
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/value/ops.rs:130:38
[INFO] [stderr]     |
[INFO] [stderr] 130 |             match value[starts_at..].trim_right().parse() {
[INFO] [stderr]     |                                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `arguments` is assigned to, but never used
[INFO] [stderr]    --> src/nodes/parser/expr.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |     let mut arguments = Vec::<Expr<'c>>::new();
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr]     = note: consider using `_arguments` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `call_type` is assigned to, but never used
[INFO] [stderr]    --> src/nodes/parser/expr.rs:347:13
[INFO] [stderr]     |
[INFO] [stderr] 347 |     let mut call_type = ExprCallType::Any;
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_call_type` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:349:9
[INFO] [stderr]     |
[INFO] [stderr] 349 |     let arg = match token.value {
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:352:17
[INFO] [stderr]     |
[INFO] [stderr] 352 |             let arg = match token.value {
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `call_type` is never read
[INFO] [stderr]    --> src/nodes/parser/expr.rs:362:17
[INFO] [stderr]     |
[INFO] [stderr] 362 |                 call_type = ExprCallType::Method;
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `arguments` is never read
[INFO] [stderr]    --> src/nodes/parser/expr.rs:363:17
[INFO] [stderr]     |
[INFO] [stderr] 363 |                 arguments = try!(parse_unnamed_arguments(parser, false));
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `call_type` is never read
[INFO] [stderr]    --> src/nodes/parser/expr.rs:373:13
[INFO] [stderr]     |
[INFO] [stderr] 373 |             call_type = ExprCallType::Array;
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:339:72
[INFO] [stderr]     |
[INFO] [stderr] 339 | pub fn parse_subscript_expression<'p, 'c>(parser: &mut Parser<'p, 'c>, node: Expr<'c>)
[INFO] [stderr]     |                                                                        ^^^^ help: consider prefixing with an underscore: `_node`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:390:40
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn parse_filter_expression<'p, 'c>(parser: &mut Parser<'p, 'c>, expr: Expr<'c>)
[INFO] [stderr]     |                                        ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:390:69
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn parse_filter_expression<'p, 'c>(parser: &mut Parser<'p, 'c>, expr: Expr<'c>)
[INFO] [stderr]     |                                                                     ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:442:25
[INFO] [stderr]     |
[INFO] [stderr] 442 |         let (name_expr, token) = if definition {
[INFO] [stderr]     |                         ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:484:25
[INFO] [stderr]     |
[INFO] [stderr] 484 |                         other => unreachable!("twig bug: expected that expression is a name"),
[INFO] [stderr]     |                         ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/instructions/mod.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn compile(env: (), nodes: &Module) -> Result<Template<Value>> {
[INFO] [stderr]    |                ^^^ help: consider prefixing with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arguments`
[INFO] [stderr]   --> src/instructions/compiler/expr.rs:36:49
[INFO] [stderr]    |
[INFO] [stderr] 36 |             ExprValue::FunctionCall { name, ref arguments } => {
[INFO] [stderr]    |                                                 ^^^^^^^^^ help: try ignoring the field: `arguments: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/instructions/compiler/expr.rs:36:39
[INFO] [stderr]    |
[INFO] [stderr] 36 |             ExprValue::FunctionCall { name, ref arguments } => {
[INFO] [stderr]    |                                       ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]   --> src/environment/mod.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn new(config: Config) -> Environment {
[INFO] [stderr]    |                ^^^^^^ help: consider prefixing with an underscore: `_config`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `staging`
[INFO] [stderr]   --> src/extension/core/mod.rs:70:63
[INFO] [stderr]    |
[INFO] [stderr] 70 |             Function::new_static("include", vec![Arg::Anon], |staging| {
[INFO] [stderr]    |                                                               ^^^^^^^ help: consider prefixing with an underscore: `_staging`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_for.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_for.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_if.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_if.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_extends.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_extends.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_include.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_include.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_block.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_block.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_use.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_use.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_filter.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_filter.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_import.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_import.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_spaceless.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_spaceless.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_flush.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_flush.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_do.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_do.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_embed.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_embed.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]  --> src/extension/escaper/mod.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn apply(env: &mut Environment) {
[INFO] [stderr]   |              ^^^ help: consider prefixing with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/engine/mod.rs:139:55
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn get<D: Into<Value>>(&mut self, name: &str, data: D)
[INFO] [stderr]     |                                                       ^^^^ help: consider prefixing with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Expect`
[INFO] [stderr]  --> src/nodes/parser/body.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use Expect;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Expect`
[INFO] [stderr]  --> src/nodes/parser/expr.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use Expect;
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/engine/mod.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::{ Read, Write };
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `arguments` is assigned to, but never used
[INFO] [stderr]    --> src/nodes/parser/expr.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |     let mut arguments = Vec::<Expr<'c>>::new();
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr]     = note: consider using `_arguments` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `call_type` is assigned to, but never used
[INFO] [stderr]    --> src/nodes/parser/expr.rs:347:13
[INFO] [stderr]     |
[INFO] [stderr] 347 |     let mut call_type = ExprCallType::Any;
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_call_type` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:349:9
[INFO] [stderr]     |
[INFO] [stderr] 349 |     let arg = match token.value {
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:352:17
[INFO] [stderr]     |
[INFO] [stderr] 352 |             let arg = match token.value {
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `call_type` is never read
[INFO] [stderr]    --> src/nodes/parser/expr.rs:362:17
[INFO] [stderr]     |
[INFO] [stderr] 362 |                 call_type = ExprCallType::Method;
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `arguments` is never read
[INFO] [stderr]    --> src/nodes/parser/expr.rs:363:17
[INFO] [stderr]     |
[INFO] [stderr] 363 |                 arguments = try!(parse_unnamed_arguments(parser, false));
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `call_type` is never read
[INFO] [stderr]    --> src/nodes/parser/expr.rs:373:13
[INFO] [stderr]     |
[INFO] [stderr] 373 |             call_type = ExprCallType::Array;
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `node`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:339:72
[INFO] [stderr]     |
[INFO] [stderr] 339 | pub fn parse_subscript_expression<'p, 'c>(parser: &mut Parser<'p, 'c>, node: Expr<'c>)
[INFO] [stderr]     |                                                                        ^^^^ help: consider prefixing with an underscore: `_node`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:390:40
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn parse_filter_expression<'p, 'c>(parser: &mut Parser<'p, 'c>, expr: Expr<'c>)
[INFO] [stderr]     |                                        ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:390:69
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn parse_filter_expression<'p, 'c>(parser: &mut Parser<'p, 'c>, expr: Expr<'c>)
[INFO] [stderr]     |                                                                     ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:442:25
[INFO] [stderr]     |
[INFO] [stderr] 442 |         let (name_expr, token) = if definition {
[INFO] [stderr]     |                         ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/nodes/parser/expr.rs:484:25
[INFO] [stderr]     |
[INFO] [stderr] 484 |                         other => unreachable!("twig bug: expected that expression is a name"),
[INFO] [stderr]     |                         ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/instructions/mod.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn compile(env: (), nodes: &Module) -> Result<Template<Value>> {
[INFO] [stderr]    |                ^^^ help: consider prefixing with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arguments`
[INFO] [stderr]   --> src/instructions/compiler/expr.rs:36:49
[INFO] [stderr]    |
[INFO] [stderr] 36 |             ExprValue::FunctionCall { name, ref arguments } => {
[INFO] [stderr]    |                                                 ^^^^^^^^^ help: try ignoring the field: `arguments: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/instructions/compiler/expr.rs:36:39
[INFO] [stderr]    |
[INFO] [stderr] 36 |             ExprValue::FunctionCall { name, ref arguments } => {
[INFO] [stderr]    |                                       ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]   --> src/environment/mod.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn new(config: Config) -> Environment {
[INFO] [stderr]    |                ^^^^^^ help: consider prefixing with an underscore: `_config`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `staging`
[INFO] [stderr]   --> src/extension/core/mod.rs:70:63
[INFO] [stderr]    |
[INFO] [stderr] 70 |             Function::new_static("include", vec![Arg::Anon], |staging| {
[INFO] [stderr]    |                                                               ^^^^^^^ help: consider prefixing with an underscore: `_staging`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_for.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_for.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_if.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_if.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_extends.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_extends.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_include.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_include.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_block.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_block.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_use.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_use.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_filter.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_filter.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_import.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_import.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_spaceless.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_spaceless.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_flush.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_flush.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_do.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_do.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_embed.rs:15:29
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                             ^^^^^^ help: consider prefixing with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `token`
[INFO] [stderr]   --> src/extension/core/token_parsers/parser_embed.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn parse<'p, 'c>(&self, parser: &mut Parser<'p, 'c>, token: TokenRef<'c>)
[INFO] [stderr]    |                                                          ^^^^^ help: consider prefixing with an underscore: `_token`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]  --> src/extension/escaper/mod.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn apply(env: &mut Environment) {
[INFO] [stderr]   |              ^^^ help: consider prefixing with an underscore: `_env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/engine/mod.rs:139:55
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn get<D: Into<Value>>(&mut self, name: &str, data: D)
[INFO] [stderr]     |                                                       ^^^^ help: consider prefixing with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `functions`
[INFO] [stderr]    --> src/engine/mod.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     functions: HashMap<&'static str, Box<Function<Value>>>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `functions`
[INFO] [stderr]    --> src/engine/mod.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     functions: HashMap<&'static str, Box<Function<Value>>>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `e` should have an upper case name
[INFO] [stderr]    --> src/value/ops.rs:252:15
[INFO] [stderr]     |
[INFO] [stderr] 252 |         const e: f64 = 0.0000001;
[INFO] [stderr]     |               ^ help: convert the identifier to upper case: `E`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/value/mod.rs:241:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |         point.set("x", Value::Int(42));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/value/mod.rs:242:9
[INFO] [stderr]     |
[INFO] [stderr] 242 |         point.set("y", Value::Int(43));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/value/mod.rs:251:9
[INFO] [stderr]     |
[INFO] [stderr] 251 |         point.set("x", Value::Str("48".into()));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/lex_tokens.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut path = env::current_dir().unwrap()
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> tests/fixture_tests.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use] extern crate log;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.70s
[INFO] running `"docker" "inspect" "51a5c9457cd3d9aa68513233920176e8eb3d9f82d22e7bf8d66a591d0838d1c4"`
[INFO] running `"docker" "rm" "-f" "51a5c9457cd3d9aa68513233920176e8eb3d9f82d22e7bf8d66a591d0838d1c4"`
[INFO] [stdout] 51a5c9457cd3d9aa68513233920176e8eb3d9f82d22e7bf8d66a591d0838d1c4