[INFO] updating cached repository atti1a/jsish-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/atti1a/jsish-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/atti1a/jsish-rust" "work/ex/clippy-test-run/sources/stable/gh/atti1a/jsish-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/atti1a/jsish-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/atti1a/jsish-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atti1a/jsish-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atti1a/jsish-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d539fd4be935768fc8034f6ea84a4e571ffe4e93
[INFO] sha for GitHub repo atti1a/jsish-rust: d539fd4be935768fc8034f6ea84a4e571ffe4e93
[INFO] validating manifest of atti1a/jsish-rust 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 atti1a/jsish-rust 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 atti1a/jsish-rust
[INFO] finished frobbing atti1a/jsish-rust
[INFO] frobbed toml for atti1a/jsish-rust written to work/ex/clippy-test-run/sources/stable/gh/atti1a/jsish-rust/Cargo.toml
[INFO] started frobbing atti1a/jsish-rust
[INFO] finished frobbing atti1a/jsish-rust
[INFO] frobbed toml for atti1a/jsish-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atti1a/jsish-rust/Cargo.toml
[INFO] crate atti1a/jsish-rust 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 atti1a/jsish-rust 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-4/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/atti1a/jsish-rust:/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] 5c21ae01abfd2906bcdbb712001b74013b1ecc5f415f2f6c7daa2a96bf5bc54e
[INFO] running `"docker" "start" "-a" "5c21ae01abfd2906bcdbb712001b74013b1ecc5f415f2f6c7daa2a96bf5bc54e"`
[INFO] [stderr]     Checking clap v2.29.0
[INFO] [stderr]     Checking jsish-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/parser.rs:434:25
[INFO] [stderr]     |
[INFO] [stderr] 434 |     Ok(((StIf(StIfData {guard: guard, th: Box::new(th), el: Box::new(el)})),
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: replace it with: `guard`
[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:448:31
[INFO] [stderr]     |
[INFO] [stderr] 448 |     Ok(((StWhile(StWhileData {guard: guard, body: Box::new(th)})), tk5))
[INFO] [stderr]     |                               ^^^^^^^^^^^^ help: replace it with: `guard`
[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/parser.rs:486:36
[INFO] [stderr]     |
[INFO] [stderr] 486 |         Ok((DeclInit(DeclInitData {id: id, src: Box::new(src)}), tk3))
[INFO] [stderr]     |                                    ^^^^^^ help: replace it with: `id`
[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: literal with an empty format string
[INFO] [stderr]    --> src/ast.rs:179:33
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 write!(f, "{}", "{\n")?;
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/ast.rs:181:21
[INFO] [stderr]     |
[INFO] [stderr] 181 |                     write!(f, "{}\n", stmt)?;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/ast.rs:183:33
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 write!(f, "{}", "}")
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/ast.rs:210:17
[INFO] [stderr]     |
[INFO] [stderr] 210 |                 write!(f, "\n")
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/ast.rs:227:13
[INFO] [stderr]     |
[INFO] [stderr] 227 |             write!(f, "{}\n", se)?;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:43:20
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Ok(Config {filename: filename, mode: mode})
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: replace it with: `filename`
[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/lib.rs:43:40
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Ok(Config {filename: filename, mode: mode})
[INFO] [stderr]    |                                        ^^^^^^^^^^ help: replace it with: `mode`
[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/parser.rs:434:25
[INFO] [stderr]     |
[INFO] [stderr] 434 |     Ok(((StIf(StIfData {guard: guard, th: Box::new(th), el: Box::new(el)})),
[INFO] [stderr]     |                         ^^^^^^^^^^^^ help: replace it with: `guard`
[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:448:31
[INFO] [stderr]     |
[INFO] [stderr] 448 |     Ok(((StWhile(StWhileData {guard: guard, body: Box::new(th)})), tk5))
[INFO] [stderr]     |                               ^^^^^^^^^^^^ help: replace it with: `guard`
[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/parser.rs:486:36
[INFO] [stderr]     |
[INFO] [stderr] 486 |         Ok((DeclInit(DeclInitData {id: id, src: Box::new(src)}), tk3))
[INFO] [stderr]     |                                    ^^^^^^ help: replace it with: `id`
[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: literal with an empty format string
[INFO] [stderr]    --> src/ast.rs:179:33
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 write!(f, "{}", "{\n")?;
[INFO] [stderr]     |                                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_literal)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/ast.rs:181:21
[INFO] [stderr]     |
[INFO] [stderr] 181 |                     write!(f, "{}\n", stmt)?;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::write_with_newline)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]    --> src/ast.rs:183:33
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 write!(f, "{}", "}")
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_literal
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/ast.rs:210:17
[INFO] [stderr]     |
[INFO] [stderr] 210 |                 write!(f, "\n")
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: using `write!()` with a format string that ends in a single newline, consider using `writeln!()` instead
[INFO] [stderr]    --> src/ast.rs:227:13
[INFO] [stderr]     |
[INFO] [stderr] 227 |             write!(f, "{}\n", se)?;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/lib.rs:43:20
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Ok(Config {filename: filename, mode: mode})
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^ help: replace it with: `filename`
[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/lib.rs:43:40
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Ok(Config {filename: filename, mode: mode})
[INFO] [stderr]    |                                        ^^^^^^^^^^ help: replace it with: `mode`
[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: unneeded unit return type
[INFO] [stderr]    --> src/tokenizer.rs:326:40
[INFO] [stderr]     |
[INFO] [stderr] 326 | fn clear_whitespace(itr: &mut FStream) -> () {
[INFO] [stderr]     |                                        ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     NumValue(i64),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     StringValue(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     BoolValue(bool),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     UndefinedValue
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same postfix: `Value`
[INFO] [stderr]   --> src/interpreter.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / enum Value {
[INFO] [stderr] 17 | |     NumValue(i64),
[INFO] [stderr] 18 | |     StringValue(String),
[INFO] [stderr] 19 | |     BoolValue(bool),
[INFO] [stderr] 20 | |     UndefinedValue
[INFO] [stderr] 21 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: remove the postfixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/tokenizer.rs:326:40
[INFO] [stderr]     |
[INFO] [stderr] 326 | fn clear_whitespace(itr: &mut FStream) -> () {
[INFO] [stderr]     |                                        ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     NumValue(i64),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     StringValue(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     BoolValue(bool),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: Variant name ends with the enum's name
[INFO] [stderr]   --> src/interpreter.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     UndefinedValue
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same postfix: `Value`
[INFO] [stderr]   --> src/interpreter.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | / enum Value {
[INFO] [stderr] 17 | |     NumValue(i64),
[INFO] [stderr] 18 | |     StringValue(String),
[INFO] [stderr] 19 | |     BoolValue(bool),
[INFO] [stderr] 20 | |     UndefinedValue
[INFO] [stderr] 21 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: remove the postfixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/tokenizer.rs:327:5
[INFO] [stderr]     |
[INFO] [stderr] 327 | /     loop {
[INFO] [stderr] 328 | |         if let Some(&Ok(c)) = itr.peek() {
[INFO] [stderr] 329 | |             if (c as char).is_whitespace() {
[INFO] [stderr] 330 | |                 itr.next();
[INFO] [stderr] ...   |
[INFO] [stderr] 338 | |         }
[INFO] [stderr] 339 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(&Ok(c)) = itr.peek() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/parser.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 | /     match tk {
[INFO] [stderr] 72 | |         &ExpId(_) => true,
[INFO] [stderr] 73 | |         _ => false
[INFO] [stderr] 74 | |     }
[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] 71 |     match *tk {
[INFO] [stderr] 72 |         ExpId(_) => true,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/parser.rs:95:15
[INFO] [stderr]    |
[INFO] [stderr] 95 |     op_pairs: &'a Vec<(Token, T)>
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(Token, T)]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/parser.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 | /     loop {
[INFO] [stderr] 161 | |         if let Some(&(_, ref opr)) = search_for_op(&tk_cursor, &op_pairs) {
[INFO] [stderr] 162 | |             let tk2 = next_token(itr)?;
[INFO] [stderr] 163 | |             let (rht, tk3) = parse_opnd(itr, tk2.clone())?;
[INFO] [stderr] ...   |
[INFO] [stderr] 172 | |         }
[INFO] [stderr] 173 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(&(_, ref opr)) = search_for_op(&tk_cursor, &op_pairs) { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/tokenizer.rs:327:5
[INFO] [stderr]     |
[INFO] [stderr] 327 | /     loop {
[INFO] [stderr] 328 | |         if let Some(&Ok(c)) = itr.peek() {
[INFO] [stderr] 329 | |             if (c as char).is_whitespace() {
[INFO] [stderr] 330 | |                 itr.next();
[INFO] [stderr] ...   |
[INFO] [stderr] 338 | |         }
[INFO] [stderr] 339 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(&Ok(c)) = itr.peek() { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/parser.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 | /     match tk {
[INFO] [stderr] 72 | |         &ExpId(_) => true,
[INFO] [stderr] 73 | |         _ => false
[INFO] [stderr] 74 | |     }
[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] 71 |     match *tk {
[INFO] [stderr] 72 |         ExpId(_) => true,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/parser.rs:95:15
[INFO] [stderr]    |
[INFO] [stderr] 95 |     op_pairs: &'a Vec<(Token, T)>
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[(Token, T)]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `while let` loop
[INFO] [stderr]    --> src/parser.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 | /     loop {
[INFO] [stderr] 161 | |         if let Some(&(_, ref opr)) = search_for_op(&tk_cursor, &op_pairs) {
[INFO] [stderr] 162 | |             let tk2 = next_token(itr)?;
[INFO] [stderr] 163 | |             let (rht, tk3) = parse_opnd(itr, tk2.clone())?;
[INFO] [stderr] ...   |
[INFO] [stderr] 172 | |         }
[INFO] [stderr] 173 | |     }
[INFO] [stderr]     | |_____^ help: try: `while let Some(&(_, ref opr)) = search_for_op(&tk_cursor, &op_pairs) { .. }`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/ast.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |         for ref se in se_list {
[INFO] [stderr]     |             ^^^^^^    ------- help: try: `let se = &se_list;`
[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: passing a unit value to a function
[INFO] [stderr]   --> src/lib.rs:51:25
[INFO] [stderr]    |
[INFO] [stderr] 51 |         Mode::Ast => Ok(println!("{:?}", prog)),
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]   --> src/lib.rs:52:27
[INFO] [stderr]    |
[INFO] [stderr] 52 |         Mode::Print => Ok(print!("{}", prog)),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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/ast.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |         for ref se in se_list {
[INFO] [stderr]     |             ^^^^^^    ------- help: try: `let se = &se_list;`
[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: passing a unit value to a function
[INFO] [stderr]   --> src/lib.rs:51:25
[INFO] [stderr]    |
[INFO] [stderr] 51 |         Mode::Ast => Ok(println!("{:?}", prog)),
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unit_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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: passing a unit value to a function
[INFO] [stderr]   --> src/lib.rs:52:27
[INFO] [stderr]    |
[INFO] [stderr] 52 |         Mode::Print => Ok(print!("{}", prog)),
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unit_arg
[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]     Finished dev [unoptimized + debuginfo] target(s) in 10.57s
[INFO] running `"docker" "inspect" "5c21ae01abfd2906bcdbb712001b74013b1ecc5f415f2f6c7daa2a96bf5bc54e"`
[INFO] running `"docker" "rm" "-f" "5c21ae01abfd2906bcdbb712001b74013b1ecc5f415f2f6c7daa2a96bf5bc54e"`
[INFO] [stdout] 5c21ae01abfd2906bcdbb712001b74013b1ecc5f415f2f6c7daa2a96bf5bc54e