[INFO] updating cached repository McGittyHub/js-interpret
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/McGittyHub/js-interpret
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/McGittyHub/js-interpret" "work/ex/clippy-test-run/sources/stable/gh/McGittyHub/js-interpret"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/McGittyHub/js-interpret'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/McGittyHub/js-interpret" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/McGittyHub/js-interpret"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/McGittyHub/js-interpret'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8530b559bc766a5e8b0f4fa2492bbfa69b8b4414
[INFO] sha for GitHub repo McGittyHub/js-interpret: 8530b559bc766a5e8b0f4fa2492bbfa69b8b4414
[INFO] validating manifest of McGittyHub/js-interpret 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 McGittyHub/js-interpret 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 McGittyHub/js-interpret
[INFO] finished frobbing McGittyHub/js-interpret
[INFO] frobbed toml for McGittyHub/js-interpret written to work/ex/clippy-test-run/sources/stable/gh/McGittyHub/js-interpret/Cargo.toml
[INFO] started frobbing McGittyHub/js-interpret
[INFO] finished frobbing McGittyHub/js-interpret
[INFO] frobbed toml for McGittyHub/js-interpret written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/McGittyHub/js-interpret/Cargo.toml
[INFO] crate McGittyHub/js-interpret 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 McGittyHub/js-interpret against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/McGittyHub/js-interpret:/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" "-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] dbec2ccabedaf8de154ca34fef1cfb78c8166a2296f6434208b34a97c24db540
[INFO] running `"docker" "start" "-a" "dbec2ccabedaf8de154ca34fef1cfb78c8166a2296f6434208b34a97c24db540"`
[INFO] [stderr]     Checking js-interpret v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/eval.rs:59:31
[INFO] [stderr]    |
[INFO] [stderr] 59 |           self.scope.retain(|x| match x {
[INFO] [stderr]    |  _______________________________^
[INFO] [stderr] 60 | |             &Statement::Decl(ref n, ..) => n != name,
[INFO] [stderr] 61 | |             _ => true,
[INFO] [stderr] 62 | |         });
[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] 59 |         self.scope.retain(|x| match *x {
[INFO] [stderr] 60 |             Statement::Decl(ref n, ..) => n != name,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/eval.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 | /             match st {
[INFO] [stderr] 108 | |                 &Statement::Return(ref expr) => {
[INFO] [stderr] 109 | |                     return self.do_return(expr);
[INFO] [stderr] 110 | |                 }
[INFO] [stderr] 111 | |                 _ => {}
[INFO] [stderr] 112 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 107 |             if let &Statement::Return(ref expr) = st {
[INFO] [stderr] 108 |     return self.do_return(expr);
[INFO] [stderr] 109 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 | /             match st {
[INFO] [stderr] 108 | |                 &Statement::Return(ref expr) => {
[INFO] [stderr] 109 | |                     return self.do_return(expr);
[INFO] [stderr] 110 | |                 }
[INFO] [stderr] 111 | |                 _ => {}
[INFO] [stderr] 112 | |             }
[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] 107 |             match *st {
[INFO] [stderr] 108 |                 Statement::Return(ref expr) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 | /         match expr {
[INFO] [stderr] 136 | |             &Expr::Var(ref name) => match name.as_str() {
[INFO] [stderr] 137 | |                 "log" => {
[INFO] [stderr] 138 | |                     for param in params {
[INFO] [stderr] ...   |
[INFO] [stderr] 162 | |             _ => panic!(),
[INFO] [stderr] 163 | |         }
[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] 135 |         match *expr {
[INFO] [stderr] 136 |             Expr::Var(ref name) => match name.as_str() {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:224:34
[INFO] [stderr]     |
[INFO] [stderr] 224 |               &BinaryOp::Assign => match lhs {
[INFO] [stderr]     |  __________________________________^
[INFO] [stderr] 225 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 226 | |                     self = self.visit_expr(rhs);
[INFO] [stderr] 227 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 237 | |                 _ => panic!(),
[INFO] [stderr] 238 | |             },
[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] 224 |             &BinaryOp::Assign => match *lhs {
[INFO] [stderr] 225 |                 Expr::Var(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:239:37
[INFO] [stderr]     |
[INFO] [stderr] 239 |               &BinaryOp::AddAssign => match lhs {
[INFO] [stderr]     |  _____________________________________^
[INFO] [stderr] 240 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 241 | |                     self = self.visit_expr(lhs);
[INFO] [stderr] 242 | |                     let l = self.unpack_int_return_value();
[INFO] [stderr] ...   |
[INFO] [stderr] 251 | |                 _ => panic!(),
[INFO] [stderr] 252 | |             },
[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] 239 |             &BinaryOp::AddAssign => match *lhs {
[INFO] [stderr] 240 |                 Expr::Var(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 | /         match op {
[INFO] [stderr] 259 | |             &UnaryOp::Increment => match expr {
[INFO] [stderr] 260 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 261 | |                     self.increment_var(name);
[INFO] [stderr] ...   |
[INFO] [stderr] 266 | |             },
[INFO] [stderr] 267 | |         }
[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] 258 |         match *op {
[INFO] [stderr] 259 |             UnaryOp::Increment => match expr {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:259:36
[INFO] [stderr]     |
[INFO] [stderr] 259 |               &UnaryOp::Increment => match expr {
[INFO] [stderr]     |  ____________________________________^
[INFO] [stderr] 260 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 261 | |                     self.increment_var(name);
[INFO] [stderr] 262 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 265 | |                 _ => panic!(),
[INFO] [stderr] 266 | |             },
[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] 259 |             &UnaryOp::Increment => match *expr {
[INFO] [stderr] 260 |                 Expr::Var(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:286:13
[INFO] [stderr]     |
[INFO] [stderr] 286 | /             match stmt {
[INFO] [stderr] 287 | |                 &Statement::Decl(ref nme, Decl::VarDecl(ref expr)) if nme == name => {
[INFO] [stderr] 288 | |                     return expr.clone();
[INFO] [stderr] 289 | |                 }
[INFO] [stderr] 290 | |                 _ => {}
[INFO] [stderr] 291 | |             }
[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] 286 |             match *stmt {
[INFO] [stderr] 287 |                 Statement::Decl(ref nme, Decl::VarDecl(ref expr)) if nme == name => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:303:13
[INFO] [stderr]     |
[INFO] [stderr] 303 | /             match stmt {
[INFO] [stderr] 304 | |                 &Statement::Decl(ref nme, Decl::FnDecl(ref prms, ref stmts)) if nme == name => {
[INFO] [stderr] 305 | |                     return (prms.clone(), stmts.clone());
[INFO] [stderr] 306 | |                 }
[INFO] [stderr] 307 | |                 _ => {}
[INFO] [stderr] 308 | |             }
[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] 303 |             match *stmt {
[INFO] [stderr] 304 |                 Statement::Decl(ref nme, Decl::FnDecl(ref prms, ref stmts)) if nme == name => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:320:13
[INFO] [stderr]     |
[INFO] [stderr] 320 | /             match stmt {
[INFO] [stderr] 321 | |                 &mut Statement::Decl(ref nme, Decl::VarDecl(Expr::Int(ref mut n)))
[INFO] [stderr] 322 | |                     if nme == name =>
[INFO] [stderr] 323 | |                 {
[INFO] [stderr] ...   |
[INFO] [stderr] 328 | |                 _ => {}
[INFO] [stderr] 329 | |             }
[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] 320 |             match *stmt {
[INFO] [stderr] 321 |                 Statement::Decl(ref nme, Decl::VarDecl(Expr::Int(ref mut n)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:339:13
[INFO] [stderr]     |
[INFO] [stderr] 339 | /             match stmt {
[INFO] [stderr] 340 | |                 &mut Statement::Decl(ref nme, Decl::VarDecl(ref mut expr)) if nme == name => {
[INFO] [stderr] 341 | |                     match assign {
[INFO] [stderr] 342 | |                         &Expr::Int(n) => {
[INFO] [stderr] ...   |
[INFO] [stderr] 350 | |                 _ => {}
[INFO] [stderr] 351 | |             }
[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] 339 |             match *stmt {
[INFO] [stderr] 340 |                 Statement::Decl(ref nme, Decl::VarDecl(ref mut expr)) if nme == name => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:341:21
[INFO] [stderr]     |
[INFO] [stderr] 341 | /                     match assign {
[INFO] [stderr] 342 | |                         &Expr::Int(n) => {
[INFO] [stderr] 343 | |                             *expr = Expr::Int(n);
[INFO] [stderr] 344 | |                         }
[INFO] [stderr] 345 | |                         _ => panic!(),
[INFO] [stderr] 346 | |                     }
[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] 341 |                     match *assign {
[INFO] [stderr] 342 |                         Expr::Int(n) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/eval.rs:59:31
[INFO] [stderr]    |
[INFO] [stderr] 59 |           self.scope.retain(|x| match x {
[INFO] [stderr]    |  _______________________________^
[INFO] [stderr] 60 | |             &Statement::Decl(ref n, ..) => n != name,
[INFO] [stderr] 61 | |             _ => true,
[INFO] [stderr] 62 | |         });
[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] 59 |         self.scope.retain(|x| match *x {
[INFO] [stderr] 60 |             Statement::Decl(ref n, ..) => n != name,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/eval.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 | /             match st {
[INFO] [stderr] 108 | |                 &Statement::Return(ref expr) => {
[INFO] [stderr] 109 | |                     return self.do_return(expr);
[INFO] [stderr] 110 | |                 }
[INFO] [stderr] 111 | |                 _ => {}
[INFO] [stderr] 112 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 107 |             if let &Statement::Return(ref expr) = st {
[INFO] [stderr] 108 |     return self.do_return(expr);
[INFO] [stderr] 109 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 | /             match st {
[INFO] [stderr] 108 | |                 &Statement::Return(ref expr) => {
[INFO] [stderr] 109 | |                     return self.do_return(expr);
[INFO] [stderr] 110 | |                 }
[INFO] [stderr] 111 | |                 _ => {}
[INFO] [stderr] 112 | |             }
[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] 107 |             match *st {
[INFO] [stderr] 108 |                 Statement::Return(ref expr) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 | /         match expr {
[INFO] [stderr] 136 | |             &Expr::Var(ref name) => match name.as_str() {
[INFO] [stderr] 137 | |                 "log" => {
[INFO] [stderr] 138 | |                     for param in params {
[INFO] [stderr] ...   |
[INFO] [stderr] 162 | |             _ => panic!(),
[INFO] [stderr] 163 | |         }
[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] 135 |         match *expr {
[INFO] [stderr] 136 |             Expr::Var(ref name) => match name.as_str() {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:224:34
[INFO] [stderr]     |
[INFO] [stderr] 224 |               &BinaryOp::Assign => match lhs {
[INFO] [stderr]     |  __________________________________^
[INFO] [stderr] 225 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 226 | |                     self = self.visit_expr(rhs);
[INFO] [stderr] 227 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 237 | |                 _ => panic!(),
[INFO] [stderr] 238 | |             },
[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] 224 |             &BinaryOp::Assign => match *lhs {
[INFO] [stderr] 225 |                 Expr::Var(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:239:37
[INFO] [stderr]     |
[INFO] [stderr] 239 |               &BinaryOp::AddAssign => match lhs {
[INFO] [stderr]     |  _____________________________________^
[INFO] [stderr] 240 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 241 | |                     self = self.visit_expr(lhs);
[INFO] [stderr] 242 | |                     let l = self.unpack_int_return_value();
[INFO] [stderr] ...   |
[INFO] [stderr] 251 | |                 _ => panic!(),
[INFO] [stderr] 252 | |             },
[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] 239 |             &BinaryOp::AddAssign => match *lhs {
[INFO] [stderr] 240 |                 Expr::Var(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 | /         match op {
[INFO] [stderr] 259 | |             &UnaryOp::Increment => match expr {
[INFO] [stderr] 260 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 261 | |                     self.increment_var(name);
[INFO] [stderr] ...   |
[INFO] [stderr] 266 | |             },
[INFO] [stderr] 267 | |         }
[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] 258 |         match *op {
[INFO] [stderr] 259 |             UnaryOp::Increment => match expr {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:259:36
[INFO] [stderr]     |
[INFO] [stderr] 259 |               &UnaryOp::Increment => match expr {
[INFO] [stderr]     |  ____________________________________^
[INFO] [stderr] 260 | |                 &Expr::Var(ref name) => {
[INFO] [stderr] 261 | |                     self.increment_var(name);
[INFO] [stderr] 262 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 265 | |                 _ => panic!(),
[INFO] [stderr] 266 | |             },
[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] 259 |             &UnaryOp::Increment => match *expr {
[INFO] [stderr] 260 |                 Expr::Var(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:286:13
[INFO] [stderr]     |
[INFO] [stderr] 286 | /             match stmt {
[INFO] [stderr] 287 | |                 &Statement::Decl(ref nme, Decl::VarDecl(ref expr)) if nme == name => {
[INFO] [stderr] 288 | |                     return expr.clone();
[INFO] [stderr] 289 | |                 }
[INFO] [stderr] 290 | |                 _ => {}
[INFO] [stderr] 291 | |             }
[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] 286 |             match *stmt {
[INFO] [stderr] 287 |                 Statement::Decl(ref nme, Decl::VarDecl(ref expr)) if nme == name => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:303:13
[INFO] [stderr]     |
[INFO] [stderr] 303 | /             match stmt {
[INFO] [stderr] 304 | |                 &Statement::Decl(ref nme, Decl::FnDecl(ref prms, ref stmts)) if nme == name => {
[INFO] [stderr] 305 | |                     return (prms.clone(), stmts.clone());
[INFO] [stderr] 306 | |                 }
[INFO] [stderr] 307 | |                 _ => {}
[INFO] [stderr] 308 | |             }
[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] 303 |             match *stmt {
[INFO] [stderr] 304 |                 Statement::Decl(ref nme, Decl::FnDecl(ref prms, ref stmts)) if nme == name => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:320:13
[INFO] [stderr]     |
[INFO] [stderr] 320 | /             match stmt {
[INFO] [stderr] 321 | |                 &mut Statement::Decl(ref nme, Decl::VarDecl(Expr::Int(ref mut n)))
[INFO] [stderr] 322 | |                     if nme == name =>
[INFO] [stderr] 323 | |                 {
[INFO] [stderr] ...   |
[INFO] [stderr] 328 | |                 _ => {}
[INFO] [stderr] 329 | |             }
[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] 320 |             match *stmt {
[INFO] [stderr] 321 |                 Statement::Decl(ref nme, Decl::VarDecl(Expr::Int(ref mut n)))
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:339:13
[INFO] [stderr]     |
[INFO] [stderr] 339 | /             match stmt {
[INFO] [stderr] 340 | |                 &mut Statement::Decl(ref nme, Decl::VarDecl(ref mut expr)) if nme == name => {
[INFO] [stderr] 341 | |                     match assign {
[INFO] [stderr] 342 | |                         &Expr::Int(n) => {
[INFO] [stderr] ...   |
[INFO] [stderr] 350 | |                 _ => {}
[INFO] [stderr] 351 | |             }
[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] 339 |             match *stmt {
[INFO] [stderr] 340 |                 Statement::Decl(ref nme, Decl::VarDecl(ref mut expr)) if nme == name => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/eval.rs:341:21
[INFO] [stderr]     |
[INFO] [stderr] 341 | /                     match assign {
[INFO] [stderr] 342 | |                         &Expr::Int(n) => {
[INFO] [stderr] 343 | |                             *expr = Expr::Int(n);
[INFO] [stderr] 344 | |                         }
[INFO] [stderr] 345 | |                         _ => panic!(),
[INFO] [stderr] 346 | |                     }
[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] 341 |                     match *assign {
[INFO] [stderr] 342 |                         Expr::Int(n) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `"docker" "inspect" "dbec2ccabedaf8de154ca34fef1cfb78c8166a2296f6434208b34a97c24db540"`
[INFO] running `"docker" "rm" "-f" "dbec2ccabedaf8de154ca34fef1cfb78c8166a2296f6434208b34a97c24db540"`
[INFO] [stdout] dbec2ccabedaf8de154ca34fef1cfb78c8166a2296f6434208b34a97c24db540