[INFO] updating cached repository totem3/rem
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/totem3/rem
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/totem3/rem" "work/ex/clippy-test-run/sources/stable/gh/totem3/rem"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/totem3/rem'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/totem3/rem" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/totem3/rem"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/totem3/rem'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 366c9e150d71dca9890d69b125efa7669bce53af
[INFO] sha for GitHub repo totem3/rem: 366c9e150d71dca9890d69b125efa7669bce53af
[INFO] validating manifest of totem3/rem 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 totem3/rem 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 totem3/rem
[INFO] finished frobbing totem3/rem
[INFO] frobbed toml for totem3/rem written to work/ex/clippy-test-run/sources/stable/gh/totem3/rem/Cargo.toml
[INFO] started frobbing totem3/rem
[INFO] finished frobbing totem3/rem
[INFO] frobbed toml for totem3/rem written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/totem3/rem/Cargo.toml
[INFO] crate totem3/rem 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 totem3/rem 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-5/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/totem3/rem:/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] 2339fadc4c9a47744f6bf2ac9e2b33b868545c6ff01b3c014e8aa4eea52184d5
[INFO] running `"docker" "start" "-a" "2339fadc4c9a47744f6bf2ac9e2b33b868545c6ff01b3c014e8aa4eea52184d5"`
[INFO] [stderr]     Checking rem v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/instruction.rs:82:24
[INFO] [stderr]    |
[INFO] [stderr] 82 |         HandlerError { reason: reason }
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^ help: replace it with: `reason`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             pos: pos,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `pos`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/compiler_info.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |             instructions: instructions,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `instructions`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/compiler_info.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |             labels: labels,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `labels`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/instruction.rs:82:24
[INFO] [stderr]    |
[INFO] [stderr] 82 |         HandlerError { reason: reason }
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^ help: replace it with: `reason`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/parser.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             pos: pos,
[INFO] [stderr]    |             ^^^^^^^^ help: replace it with: `pos`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/compiler_info.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |             instructions: instructions,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `instructions`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/compiler_info.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |             labels: labels,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `labels`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rem_value.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         match self {
[INFO] [stderr] 42 | |             &RemValue::String_(ref s) => write!(f, "{}", s),
[INFO] [stderr] 43 | |             &RemValue::Number(ref n) => write!(f, "{}", n),
[INFO] [stderr] 44 | |             &RemValue::Boolean(ref n) => write!(f, "{}", n),
[INFO] [stderr] 45 | |             &RemValue::Empty => write!(f, ""),
[INFO] [stderr] 46 | |         }
[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] 41 |         match *self {
[INFO] [stderr] 42 |             RemValue::String_(ref s) => write!(f, "{}", s),
[INFO] [stderr] 43 |             RemValue::Number(ref n) => write!(f, "{}", n),
[INFO] [stderr] 44 |             RemValue::Boolean(ref n) => write!(f, "{}", n),
[INFO] [stderr] 45 |             RemValue::Empty => write!(f, ""),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/instruction.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | /         match self {
[INFO] [stderr] 22 | |             &Operand::Register(ref i) => write!(f, "${}", i),
[INFO] [stderr] 23 | |             &Operand::Value(ref v) => write!(f, "{}", v),
[INFO] [stderr] 24 | |             &Operand::Label(ref v) => write!(f, ":{}", v),
[INFO] [stderr] 25 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 21 |         match *self {
[INFO] [stderr] 22 |             Operand::Register(ref i) => write!(f, "${}", i),
[INFO] [stderr] 23 |             Operand::Value(ref v) => write!(f, "{}", v),
[INFO] [stderr] 24 |             Operand::Label(ref v) => write!(f, ":{}", v),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/instruction.rs:55:32
[INFO] [stderr]    |
[INFO] [stderr] 55 |             v if s.starts_with("$") => {
[INFO] [stderr]    |                                ^^^ help: try using a char instead: `'$'`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/instruction.rs:64:32
[INFO] [stderr]    |
[INFO] [stderr] 64 |             v if s.starts_with(":") => Ok(Operand::Label(v.to_string())),
[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/instruction.rs:85:32
[INFO] [stderr]    |
[INFO] [stderr] 85 |         HandlerError { reason: format!("{}", reason) }
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `reason.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]    = 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: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let ref a = registers[*i];
[INFO] [stderr]     |                 ----^^^^^----------------- help: try: `let a = &registers[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:176:21
[INFO] [stderr]     |
[INFO] [stderr] 176 |                 let ref b = registers[*j];
[INFO] [stderr]     |                 ----^^^^^----------------- help: try: `let b = &registers[*j];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/instruction.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 | /         match &self.0 {
[INFO] [stderr] 278 | |             &Value(ref v) => println!("{}", v),
[INFO] [stderr] 279 | |             &Register(ref i) => {
[INFO] [stderr] 280 | |                 let registers = registers.borrow();
[INFO] [stderr] ...   |
[INFO] [stderr] 284 | |             _ => return Err(HandlerError::str("cannot echo label")),
[INFO] [stderr] 285 | |         };
[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: try
[INFO] [stderr]     |
[INFO] [stderr] 277 |         match self.0 {
[INFO] [stderr] 278 |             Value(ref v) => println!("{}", v),
[INFO] [stderr] 279 |             Register(ref i) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:281:21
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 let ref value = registers[*i].value;
[INFO] [stderr]     |                 ----^^^^^^^^^----------------------- help: try: `let value = &registers[*i].value;`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/instruction.rs:298:9
[INFO] [stderr]     |
[INFO] [stderr] 298 | /         match &self.0 {
[INFO] [stderr] 299 | |             &Value(ref v) => println!("{}", v),
[INFO] [stderr] 300 | |             &Register(ref i) => {
[INFO] [stderr] 301 | |                 let registers = registers.borrow();
[INFO] [stderr] ...   |
[INFO] [stderr] 305 | |             _ => return Err(HandlerError::str("cannot echo label")),
[INFO] [stderr] 306 | |         };
[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: try
[INFO] [stderr]     |
[INFO] [stderr] 298 |         match self.0 {
[INFO] [stderr] 299 |             Value(ref v) => println!("{}", v),
[INFO] [stderr] 300 |             Register(ref i) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:302:21
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 let ref value = registers[*i].value;
[INFO] [stderr]     |                 ----^^^^^^^^^----------------------- help: try: `let value = &registers[*i].value;`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:325:21
[INFO] [stderr]     |
[INFO] [stderr] 325 |                 let ref src = registers[*j];
[INFO] [stderr]     |                 ----^^^^^^^----------------- help: try: `let src = &registers[*j];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:333:13
[INFO] [stderr]     |
[INFO] [stderr] 333 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:354:13
[INFO] [stderr]     |
[INFO] [stderr] 354 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:374:13
[INFO] [stderr]     |
[INFO] [stderr] 374 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:394:13
[INFO] [stderr]     |
[INFO] [stderr] 394 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:414:13
[INFO] [stderr]     |
[INFO] [stderr] 414 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                 let ref register = registers.borrow()[*i];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^-------------------------- help: try: `let register = &registers.borrow()[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:459:21
[INFO] [stderr]     |
[INFO] [stderr] 459 |                 let ref register = registers.borrow()[*i];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^-------------------------- help: try: `let register = &registers.borrow()[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:476:21
[INFO] [stderr]     |
[INFO] [stderr] 476 |                 let ref register = registers.borrow()[*i];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^-------------------------- help: try: `let register = &registers.borrow()[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:509:13
[INFO] [stderr]     |
[INFO] [stderr] 509 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:528:13
[INFO] [stderr]     |
[INFO] [stderr] 528 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:547:13
[INFO] [stderr]     |
[INFO] [stderr] 547 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/rem_value.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         match self {
[INFO] [stderr] 42 | |             &RemValue::String_(ref s) => write!(f, "{}", s),
[INFO] [stderr] 43 | |             &RemValue::Number(ref n) => write!(f, "{}", n),
[INFO] [stderr] 44 | |             &RemValue::Boolean(ref n) => write!(f, "{}", n),
[INFO] [stderr] 45 | |             &RemValue::Empty => write!(f, ""),
[INFO] [stderr] 46 | |         }
[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] 41 |         match *self {
[INFO] [stderr] 42 |             RemValue::String_(ref s) => write!(f, "{}", s),
[INFO] [stderr] 43 |             RemValue::Number(ref n) => write!(f, "{}", n),
[INFO] [stderr] 44 |             RemValue::Boolean(ref n) => write!(f, "{}", n),
[INFO] [stderr] 45 |             RemValue::Empty => write!(f, ""),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:584:13
[INFO] [stderr]     |
[INFO] [stderr] 584 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 32
[INFO] [stderr]    --> src/parser.rs:41:5
[INFO] [stderr]     |
[INFO] [stderr] 41  | /     pub fn parse<R: io::BufRead>(r: &mut R) -> Result<CompilerInfo, ParseError> {
[INFO] [stderr] 42  | |         let mut vec: Vec<Box<Instruction>> = Vec::new();
[INFO] [stderr] 43  | |         let mut labels: HashMap<String, usize> = HashMap::new();
[INFO] [stderr] 44  | |         let mut lnum = 0;
[INFO] [stderr] ...   |
[INFO] [stderr] 355 | |         Ok(ci)
[INFO] [stderr] 356 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/parser.rs:55:26
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { ss[0].clone() } else { "" };
[INFO] [stderr]    |                          ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ss.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type
[INFO] [stderr]   --> src/parser.rs:55:41
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { ss[0].clone() } else { "" };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::clone_double_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_double_ref
[INFO] [stderr] help: try dereferencing it
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { &(*ss[0]).clone() } else { "" };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] help: or try being explicit about what type to clone
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { &str::clone(ss[0]) } else { "" };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parser.rs:63:36
[INFO] [stderr]    |
[INFO] [stderr] 63 |                 v if v.starts_with(":") => {
[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: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/instruction.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | /         match self {
[INFO] [stderr] 22 | |             &Operand::Register(ref i) => write!(f, "${}", i),
[INFO] [stderr] 23 | |             &Operand::Value(ref v) => write!(f, "{}", v),
[INFO] [stderr] 24 | |             &Operand::Label(ref v) => write!(f, ":{}", v),
[INFO] [stderr] 25 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 21 |         match *self {
[INFO] [stderr] 22 |             Operand::Register(ref i) => write!(f, "${}", i),
[INFO] [stderr] 23 |             Operand::Value(ref v) => write!(f, "{}", v),
[INFO] [stderr] 24 |             Operand::Label(ref v) => write!(f, ":{}", v),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `executor::Executor`
[INFO] [stderr]   --> src/executor.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | /     pub fn new() -> Self {
[INFO] [stderr] 11 | |         Executor {
[INFO] [stderr] 12 | |             registers: init_registers(),
[INFO] [stderr] 13 | |             pc: 0,
[INFO] [stderr] 14 | |         }
[INFO] [stderr] 15 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 4  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/instruction.rs:55:32
[INFO] [stderr]    |
[INFO] [stderr] 55 |             v if s.starts_with("$") => {
[INFO] [stderr]    |                                ^^^ help: try using a char instead: `'$'`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/instruction.rs:64:32
[INFO] [stderr]    |
[INFO] [stderr] 64 |             v if s.starts_with(":") => Ok(Operand::Label(v.to_string())),
[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: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/executor.rs:29:17
[INFO] [stderr]    |
[INFO] [stderr] 29 |             let ref inst = instructions[self.pc];
[INFO] [stderr]    |             ----^^^^^^^^------------------------- help: try: `let inst = &instructions[self.pc];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/instruction.rs:85:32
[INFO] [stderr]    |
[INFO] [stderr] 85 |         HandlerError { reason: format!("{}", reason) }
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `reason.to_string()`
[INFO] [stderr] 
[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]    = 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 seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/executor.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 | /             match p {
[INFO] [stderr] 32 | |                 Err(e) => {
[INFO] [stderr] 33 | |                     println!("{:?}", e);
[INFO] [stderr] 34 | |                     break;
[INFO] [stderr] 35 | |                 }
[INFO] [stderr] 36 | |                 _ => {}
[INFO] [stderr] 37 | |             }
[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] 31 |             if let Err(e) = p {
[INFO] [stderr] 32 |     println!("{:?}", e);
[INFO] [stderr] 33 |     break;
[INFO] [stderr] 34 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let ref a = registers[*i];
[INFO] [stderr]     |                 ----^^^^^----------------- help: try: `let a = &registers[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:176:21
[INFO] [stderr]     |
[INFO] [stderr] 176 |                 let ref b = registers[*j];
[INFO] [stderr]     |                 ----^^^^^----------------- help: try: `let b = &registers[*j];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rem`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/instruction.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 | /         match &self.0 {
[INFO] [stderr] 278 | |             &Value(ref v) => println!("{}", v),
[INFO] [stderr] 279 | |             &Register(ref i) => {
[INFO] [stderr] 280 | |                 let registers = registers.borrow();
[INFO] [stderr] ...   |
[INFO] [stderr] 284 | |             _ => return Err(HandlerError::str("cannot echo label")),
[INFO] [stderr] 285 | |         };
[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: try
[INFO] [stderr]     |
[INFO] [stderr] 277 |         match self.0 {
[INFO] [stderr] 278 |             Value(ref v) => println!("{}", v),
[INFO] [stderr] 279 |             Register(ref i) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:281:21
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 let ref value = registers[*i].value;
[INFO] [stderr]     |                 ----^^^^^^^^^----------------------- help: try: `let value = &registers[*i].value;`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to both the expression and the patterns
[INFO] [stderr]    --> src/instruction.rs:298:9
[INFO] [stderr]     |
[INFO] [stderr] 298 | /         match &self.0 {
[INFO] [stderr] 299 | |             &Value(ref v) => println!("{}", v),
[INFO] [stderr] 300 | |             &Register(ref i) => {
[INFO] [stderr] 301 | |                 let registers = registers.borrow();
[INFO] [stderr] ...   |
[INFO] [stderr] 305 | |             _ => return Err(HandlerError::str("cannot echo label")),
[INFO] [stderr] 306 | |         };
[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: try
[INFO] [stderr]     |
[INFO] [stderr] 298 |         match self.0 {
[INFO] [stderr] 299 |             Value(ref v) => println!("{}", v),
[INFO] [stderr] 300 |             Register(ref i) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:302:21
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 let ref value = registers[*i].value;
[INFO] [stderr]     |                 ----^^^^^^^^^----------------------- help: try: `let value = &registers[*i].value;`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:325:21
[INFO] [stderr]     |
[INFO] [stderr] 325 |                 let ref src = registers[*j];
[INFO] [stderr]     |                 ----^^^^^^^----------------- help: try: `let src = &registers[*j];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:333:13
[INFO] [stderr]     |
[INFO] [stderr] 333 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:354:13
[INFO] [stderr]     |
[INFO] [stderr] 354 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:374:13
[INFO] [stderr]     |
[INFO] [stderr] 374 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:394:13
[INFO] [stderr]     |
[INFO] [stderr] 394 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:414:13
[INFO] [stderr]     |
[INFO] [stderr] 414 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:430:21
[INFO] [stderr]     |
[INFO] [stderr] 430 |                 let ref register = registers.borrow()[*i];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^-------------------------- help: try: `let register = &registers.borrow()[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:459:21
[INFO] [stderr]     |
[INFO] [stderr] 459 |                 let ref register = registers.borrow()[*i];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^-------------------------- help: try: `let register = &registers.borrow()[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:476:21
[INFO] [stderr]     |
[INFO] [stderr] 476 |                 let ref register = registers.borrow()[*i];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^-------------------------- help: try: `let register = &registers.borrow()[*i];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:509:13
[INFO] [stderr]     |
[INFO] [stderr] 509 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:528:13
[INFO] [stderr]     |
[INFO] [stderr] 528 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:547:13
[INFO] [stderr]     |
[INFO] [stderr] 547 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/instruction.rs:584:13
[INFO] [stderr]     |
[INFO] [stderr] 584 |         let ref mut dst = registers[dst_index];
[INFO] [stderr]     |         ----^^^^^^^^^^^------------------------ help: try: `let dst = &mut registers[dst_index];`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 32
[INFO] [stderr]    --> src/parser.rs:41:5
[INFO] [stderr]     |
[INFO] [stderr] 41  | /     pub fn parse<R: io::BufRead>(r: &mut R) -> Result<CompilerInfo, ParseError> {
[INFO] [stderr] 42  | |         let mut vec: Vec<Box<Instruction>> = Vec::new();
[INFO] [stderr] 43  | |         let mut labels: HashMap<String, usize> = HashMap::new();
[INFO] [stderr] 44  | |         let mut lnum = 0;
[INFO] [stderr] ...   |
[INFO] [stderr] 355 | |         Ok(ci)
[INFO] [stderr] 356 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]     = help: you could split it up into multiple smaller functions
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/parser.rs:55:26
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { ss[0].clone() } else { "" };
[INFO] [stderr]    |                          ^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!ss.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type
[INFO] [stderr]   --> src/parser.rs:55:41
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { ss[0].clone() } else { "" };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::clone_double_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_double_ref
[INFO] [stderr] help: try dereferencing it
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { &(*ss[0]).clone() } else { "" };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] help: or try being explicit about what type to clone
[INFO] [stderr]    |
[INFO] [stderr] 55 |             let _op = if ss.len() > 0 { &str::clone(ss[0]) } else { "" };
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/parser.rs:63:36
[INFO] [stderr]    |
[INFO] [stderr] 63 |                 v if v.starts_with(":") => {
[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: you should consider deriving a `Default` implementation for `executor::Executor`
[INFO] [stderr]   --> src/executor.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | /     pub fn new() -> Self {
[INFO] [stderr] 11 | |         Executor {
[INFO] [stderr] 12 | |             registers: init_registers(),
[INFO] [stderr] 13 | |             pc: 0,
[INFO] [stderr] 14 | |         }
[INFO] [stderr] 15 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 4  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]   --> src/executor.rs:29:17
[INFO] [stderr]    |
[INFO] [stderr] 29 |             let ref inst = instructions[self.pc];
[INFO] [stderr]    |             ----^^^^^^^^------------------------- help: try: `let inst = &instructions[self.pc];`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[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/executor.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 | /             match p {
[INFO] [stderr] 32 | |                 Err(e) => {
[INFO] [stderr] 33 | |                     println!("{:?}", e);
[INFO] [stderr] 34 | |                     break;
[INFO] [stderr] 35 | |                 }
[INFO] [stderr] 36 | |                 _ => {}
[INFO] [stderr] 37 | |             }
[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] 31 |             if let Err(e) = p {
[INFO] [stderr] 32 |     println!("{:?}", e);
[INFO] [stderr] 33 |     break;
[INFO] [stderr] 34 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rem`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2339fadc4c9a47744f6bf2ac9e2b33b868545c6ff01b3c014e8aa4eea52184d5"`
[INFO] running `"docker" "rm" "-f" "2339fadc4c9a47744f6bf2ac9e2b33b868545c6ff01b3c014e8aa4eea52184d5"`
[INFO] [stdout] 2339fadc4c9a47744f6bf2ac9e2b33b868545c6ff01b3c014e8aa4eea52184d5