[INFO] updating cached repository abbychau/diesel_cli_ext
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/abbychau/diesel_cli_ext
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/abbychau/diesel_cli_ext" "work/ex/clippy-test-run/sources/stable/gh/abbychau/diesel_cli_ext"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/abbychau/diesel_cli_ext'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/abbychau/diesel_cli_ext" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/abbychau/diesel_cli_ext"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/abbychau/diesel_cli_ext'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4d12db99e8ddb21bc22351c449057e0c395b6951
[INFO] sha for GitHub repo abbychau/diesel_cli_ext: 4d12db99e8ddb21bc22351c449057e0c395b6951
[INFO] validating manifest of abbychau/diesel_cli_ext on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of abbychau/diesel_cli_ext on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing abbychau/diesel_cli_ext
[INFO] finished frobbing abbychau/diesel_cli_ext
[INFO] frobbed toml for abbychau/diesel_cli_ext written to work/ex/clippy-test-run/sources/stable/gh/abbychau/diesel_cli_ext/Cargo.toml
[INFO] started frobbing abbychau/diesel_cli_ext
[INFO] finished frobbing abbychau/diesel_cli_ext
[INFO] frobbed toml for abbychau/diesel_cli_ext written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/abbychau/diesel_cli_ext/Cargo.toml
[INFO] crate abbychau/diesel_cli_ext has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting abbychau/diesel_cli_ext against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/abbychau/diesel_cli_ext:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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 -Dclippy::into_iter_on_array" "-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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aadf8bdaf2f2ee7ae030f675b2e35b9d6f4083ff55f226517247521be5b23adc
[INFO] running `"docker" "start" "-a" "aadf8bdaf2f2ee7ae030f675b2e35b9d6f4083ff55f226517247521be5b23adc"`
[INFO] [stderr]     Checking diesel_cli_ext v0.1.12 (/opt/crater/workdir)
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/parse.rs:152:16
[INFO] [stderr]     |
[INFO] [stderr] 152 |           } else if cmp.contains("}") {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 153 | |             if closable {
[INFO] [stderr] 154 | |                 count = 0;
[INFO] [stderr] 155 | |                 str_model.push_str(&format!("}}\n"));
[INFO] [stderr] ...   |
[INFO] [stderr] 166 | |             }
[INFO] [stderr] 167 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 152 |         } else if cmp.contains("}") && closable {
[INFO] [stderr] 153 |     count = 0;
[INFO] [stderr] 154 |     str_model.push_str(&format!("}}\n"));
[INFO] [stderr] 155 |     str_proto.push_str(&format!("}}\n"));
[INFO] [stderr] 156 | 
[INFO] [stderr] 157 |     str_from_proto.push_str(&format!("        }}\n"));
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         if action == "into_proto" || action == "from_proto" {
[INFO] [stderr] 55 | |             if args.len() >= 3 {
[INFO] [stderr] 56 | |                 class_name = &args[2];
[INFO] [stderr] 57 | |             }
[INFO] [stderr] 58 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 54 |         if (action == "into_proto" || action == "from_proto") && args.len() >= 3 {
[INFO] [stderr] 55 |     class_name = &args[2];
[INFO] [stderr] 56 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]    --> src/parse.rs:152:16
[INFO] [stderr]     |
[INFO] [stderr] 152 |           } else if cmp.contains("}") {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 153 | |             if closable {
[INFO] [stderr] 154 | |                 count = 0;
[INFO] [stderr] 155 | |                 str_model.push_str(&format!("}}\n"));
[INFO] [stderr] ...   |
[INFO] [stderr] 166 | |             }
[INFO] [stderr] 167 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 152 |         } else if cmp.contains("}") && closable {
[INFO] [stderr] 153 |     count = 0;
[INFO] [stderr] 154 |     str_model.push_str(&format!("}}\n"));
[INFO] [stderr] 155 |     str_proto.push_str(&format!("}}\n"));
[INFO] [stderr] 156 | 
[INFO] [stderr] 157 |     str_from_proto.push_str(&format!("        }}\n"));
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this if statement can be collapsed
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         if action == "into_proto" || action == "from_proto" {
[INFO] [stderr] 55 | |             if args.len() >= 3 {
[INFO] [stderr] 56 | |                 class_name = &args[2];
[INFO] [stderr] 57 | |             }
[INFO] [stderr] 58 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 54 |         if (action == "into_proto" || action == "from_proto") && args.len() >= 3 {
[INFO] [stderr] 55 |     class_name = &args[2];
[INFO] [stderr] 56 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parse.rs:19:32
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let lines = contents.split("\n");
[INFO] [stderr]    |                                ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/parse.rs:58:33
[INFO] [stderr]    |
[INFO] [stderr] 58 |             str_model.push_str(&format!("\n#[derive(Queryable,Debug)]\n"));
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"\n#[derive(Queryable,Debug)]\n".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parse.rs:60:45
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let vec: Vec<&str> = line.split(" ").collect();
[INFO] [stderr]    |                                             ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parse.rs:89:45
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let vec: Vec<&str> = line.split(" ").collect();
[INFO] [stderr]    |                                             ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:113:21
[INFO] [stderr]     |
[INFO] [stderr] 113 |                     format!("{}", type_string)
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `type_string.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/parse.rs:133:17
[INFO] [stderr]     |
[INFO] [stderr] 133 | /                 match type_string {
[INFO] [stderr] 134 | |                     &"string" => ".to_string()",
[INFO] [stderr] 135 | |                     &"String" => ".to_string()",
[INFO] [stderr] 136 | |                     &"BigDecimal" => ".to_bigdecimal()",
[INFO] [stderr] 137 | |                     _ => "",
[INFO] [stderr] 138 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 133 |                 match *type_string {
[INFO] [stderr] 134 |                     "string" => ".to_string()",
[INFO] [stderr] 135 |                     "String" => ".to_string()",
[INFO] [stderr] 136 |                     "BigDecimal" => ".to_bigdecimal()",
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/parse.rs:144:17
[INFO] [stderr]     |
[INFO] [stderr] 144 | /                 match type_string {
[INFO] [stderr] 145 | |                     &"string" => ".to_string()",
[INFO] [stderr] 146 | |                     &"String" => ".to_string()",
[INFO] [stderr] 147 | |                     _ => ".into()",
[INFO] [stderr] 148 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 match *type_string {
[INFO] [stderr] 145 |                     "string" => ".to_string()",
[INFO] [stderr] 146 |                     "String" => ".to_string()",
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/parse.rs:152:32
[INFO] [stderr]     |
[INFO] [stderr] 152 |         } else if cmp.contains("}") {
[INFO] [stderr]     |                                ^^^ help: try using a char instead: `'}'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:155:37
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 str_model.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:156:37
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 str_proto.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:158:42
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 str_from_proto.push_str(&format!("        }}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"        }}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:159:42
[INFO] [stderr]     |
[INFO] [stderr] 159 |                 str_from_proto.push_str(&format!("    }}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"    }}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:161:42
[INFO] [stderr]     |
[INFO] [stderr] 161 |                 str_into_proto.push_str(&format!("        o\n    }}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"        o\n    }}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:163:42
[INFO] [stderr]     |
[INFO] [stderr] 163 |                 str_from_proto.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:164:42
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 str_into_proto.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parse.rs:19:32
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let lines = contents.split("\n");
[INFO] [stderr]    |                                ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/parse.rs:58:33
[INFO] [stderr]    |
[INFO] [stderr] 58 |             str_model.push_str(&format!("\n#[derive(Queryable,Debug)]\n"));
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"\n#[derive(Queryable,Debug)]\n".to_string()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parse.rs:60:45
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let vec: Vec<&str> = line.split(" ").collect();
[INFO] [stderr]    |                                             ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parse.rs:89:45
[INFO] [stderr]    |
[INFO] [stderr] 89 |             let vec: Vec<&str> = line.split(" ").collect();
[INFO] [stderr]    |                                             ^^^ help: try using a char instead: `' '`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:113:21
[INFO] [stderr]     |
[INFO] [stderr] 113 |                     format!("{}", type_string)
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `type_string.to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/parse.rs:133:17
[INFO] [stderr]     |
[INFO] [stderr] 133 | /                 match type_string {
[INFO] [stderr] 134 | |                     &"string" => ".to_string()",
[INFO] [stderr] 135 | |                     &"String" => ".to_string()",
[INFO] [stderr] 136 | |                     &"BigDecimal" => ".to_bigdecimal()",
[INFO] [stderr] 137 | |                     _ => "",
[INFO] [stderr] 138 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 133 |                 match *type_string {
[INFO] [stderr] 134 |                     "string" => ".to_string()",
[INFO] [stderr] 135 |                     "String" => ".to_string()",
[INFO] [stderr] 136 |                     "BigDecimal" => ".to_bigdecimal()",
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/parse.rs:144:17
[INFO] [stderr]     |
[INFO] [stderr] 144 | /                 match type_string {
[INFO] [stderr] 145 | |                     &"string" => ".to_string()",
[INFO] [stderr] 146 | |                     &"String" => ".to_string()",
[INFO] [stderr] 147 | |                     _ => ".into()",
[INFO] [stderr] 148 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 match *type_string {
[INFO] [stderr] 145 |                     "string" => ".to_string()",
[INFO] [stderr] 146 |                     "String" => ".to_string()",
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/parse.rs:152:32
[INFO] [stderr]     |
[INFO] [stderr] 152 |         } else if cmp.contains("}") {
[INFO] [stderr]     |                                ^^^ help: try using a char instead: `'}'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:155:37
[INFO] [stderr]     |
[INFO] [stderr] 155 |                 str_model.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:156:37
[INFO] [stderr]     |
[INFO] [stderr] 156 |                 str_proto.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:158:42
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 str_from_proto.push_str(&format!("        }}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"        }}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:159:42
[INFO] [stderr]     |
[INFO] [stderr] 159 |                 str_from_proto.push_str(&format!("    }}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"    }}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:161:42
[INFO] [stderr]     |
[INFO] [stderr] 161 |                 str_into_proto.push_str(&format!("        o\n    }}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"        o\n    }}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:163:42
[INFO] [stderr]     |
[INFO] [stderr] 163 |                 str_from_proto.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/parse.rs:164:42
[INFO] [stderr]     |
[INFO] [stderr] 164 |                 str_into_proto.push_str(&format!("}}\n"));
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^ help: consider using .to_string(): `"}}\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "aadf8bdaf2f2ee7ae030f675b2e35b9d6f4083ff55f226517247521be5b23adc"`
[INFO] running `"docker" "rm" "-f" "aadf8bdaf2f2ee7ae030f675b2e35b9d6f4083ff55f226517247521be5b23adc"`
[INFO] [stdout] aadf8bdaf2f2ee7ae030f675b2e35b9d6f4083ff55f226517247521be5b23adc