[INFO] cloning repository https://github.com/ayrapetovai/binc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ayrapetovai/binc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayrapetovai%2Fbinc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayrapetovai%2Fbinc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cefea7e0065855b0f14f205cdff2d87b03549181
[INFO] linting ayrapetovai/binc against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayrapetovai%2Fbinc" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ayrapetovai/binc
[INFO] finished tweaking git repo https://github.com/ayrapetovai/binc
[INFO] tweaked toml for git repo https://github.com/ayrapetovai/binc written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ayrapetovai/binc on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ayrapetovai/binc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded syn v1.0.90
[INFO] [stderr]   Downloaded clap v3.1.8
[INFO] [stderr]   Downloaded nix v0.20.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62e13537e9c93b9c2c5bf613770fd103f11d82d8efa7a11d1bc4992ed453f5da
[INFO] running `Command { std: "docker" "start" "-a" "62e13537e9c93b9c2c5bf613770fd103f11d82d8efa7a11d1bc4992ed453f5da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62e13537e9c93b9c2c5bf613770fd103f11d82d8efa7a11d1bc4992ed453f5da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e13537e9c93b9c2c5bf613770fd103f11d82d8efa7a11d1bc4992ed453f5da", kill_on_drop: false }`
[INFO] [stdout] 62e13537e9c93b9c2c5bf613770fd103f11d82d8efa7a11d1bc4992ed453f5da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ce24eaf259bf2108baf8fa995c359117ce575126ec17fc284c0945110c29ca3
[INFO] running `Command { std: "docker" "start" "-a" "0ce24eaf259bf2108baf8fa995c359117ce575126ec17fc284c0945110c29ca3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking unicode-width v0.1.9
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[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking crossterm_utils v0.4.0
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking time v0.1.43
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[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking fd-lock v2.0.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking clap v3.1.8
[INFO] [stderr]     Checking rand_core v0.6.3
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[INFO] [stderr]     Checking crossterm_screen v0.3.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking crossterm_input v0.5.0
[INFO] [stderr]     Checking crossterm_cursor v0.4.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking stderrlog v0.4.3
[INFO] [stderr]     Checking rustyline v8.2.0
[INFO] [stderr]     Checking binc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: empty lines after doc comment
[INFO] [stdout]    --> src/buffer.rs:70:1
[INFO] [stdout]     |
[INFO] [stdout]  70 | / /// implementation for Booth's algorithm
[INFO] [stdout] ...   |
[INFO] [stdout] 105 | |
[INFO] [stdout]     | |_^
[INFO] [stdout] 106 |   impl BincBuffer {
[INFO] [stdout]     |   - the comment documents this implementation
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]     = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
[INFO] [stdout]     = help: if the empty lines are unintentional, remove them
[INFO] [stdout] help: if the doc comment should not document the following item then comment it out
[INFO] [stdout]     |
[INFO] [stdout]  70 | // /// implementation for Booth's algorithm
[INFO] [stdout]     | ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if (command_list.is_empty()) {
[INFO] [stdout]     |        ^                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 161 -     if (command_list.is_empty()) {
[INFO] [stdout] 161 +     if command_list.is_empty() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty lines after doc comment
[INFO] [stdout]    --> src/buffer.rs:70:1
[INFO] [stdout]     |
[INFO] [stdout]  70 | / /// implementation for Booth's algorithm
[INFO] [stdout] ...   |
[INFO] [stdout] 105 | |
[INFO] [stdout]     | |_^
[INFO] [stdout] 106 |   impl BincBuffer {
[INFO] [stdout]     |   - the comment documents this implementation
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]     = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
[INFO] [stdout]     = help: if the empty lines are unintentional, remove them
[INFO] [stdout] help: if the doc comment should not document the following item then comment it out
[INFO] [stdout]     |
[INFO] [stdout]  70 | // /// implementation for Booth's algorithm
[INFO] [stdout]     | ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: digits of hex, binary or octal literal not in groups of equal size
[INFO] [stdout]    --> src/buffer.rs:702:16
[INFO] [stdout]     |
[INFO] [stdout] 702 |     assert_eq!(0x00_0000_00, n.to_usize());
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: consider: `0x0000_0000`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unusual_byte_groupings
[INFO] [stdout]     = note: `#[warn(clippy::unusual_byte_groupings)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:161:8
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if (command_list.is_empty()) {
[INFO] [stdout]     |        ^                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 161 -     if (command_list.is_empty()) {
[INFO] [stdout] 161 +     if command_list.is_empty() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `lines_printed` is never read
[INFO] [stdout]   --> src/main.rs:82:29
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut lines_printed = 0u16;
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Exponent`, `Fraction`, `Carry`, and `None` are never constructed
[INFO] [stdout]   --> src/syntax.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub enum NamedAccess {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 56 |     Exponent,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 57 |     Fraction,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 58 |     Carry,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 59 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NamedAccess` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NamedAccessSource` is never constructed
[INFO] [stdout]   --> src/syntax.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub enum LeftOperandSource {
[INFO] [stdout]    |          ----------------- variant in this enum
[INFO] [stdout] 64 |     RangeSource(BitsIndexRange),
[INFO] [stdout] 65 |     NamedAccessSource(NamedAccess),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LeftOperandSource` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NamedAccessSource` is never constructed
[INFO] [stdout]   --> src/syntax.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub enum RightOperandSource {
[INFO] [stdout]    |          ------------------ variant in this enum
[INFO] [stdout] 70 |     RangeSource(BitsIndexRange),
[INFO] [stdout] 71 |     NamedAccessSource(NamedAccess),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RightOperandSource` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Fixed` is never constructed
[INFO] [stdout]   --> src/buffer.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum BincBufferType {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 37 |     Fixed,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BincBufferType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `bytes`
[INFO] [stdout]    --> src/syntax.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |         for i in 0..sequence.len() {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 103 -         for i in 0..sequence.len() {
[INFO] [stdout] 103 +         for (i, <item>) in bytes.iter().enumerate().take(sequence.len()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual check for common ascii range
[INFO] [stdout]    --> src/syntax.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |             if !('0'..='9').contains(&c) {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_ascii_check
[INFO] [stdout]     = note: `#[warn(clippy::manual_is_ascii_check)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 149 -             if !('0'..='9').contains(&c) {
[INFO] [stdout] 149 +             if !c.is_ascii_digit() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/syntax.rs:191:20
[INFO] [stdout]     |
[INFO] [stdout] 191 |           Some(c) => match c {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 192 | |             '[' => {
[INFO] [stdout] 193 | |                 let (current_it, range) = syntax_range(it.rewind_n(1));
[INFO] [stdout] 194 | |                 if let Some(c) = current_it.current() {
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |             _ => Ok((it, None))
[INFO] [stdout] 206 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: the outer pattern can be modified to include the inner pattern
[INFO] [stdout]    --> src/syntax.rs:191:14
[INFO] [stdout]     |
[INFO] [stdout] 191 |         Some(c) => match c {
[INFO] [stdout]     |              ^ replace this binding
[INFO] [stdout] 192 |             '[' => {
[INFO] [stdout]     |             ^^^ with this pattern
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/syntax.rs:365:37
[INFO] [stdout]     |
[INFO] [stdout] 365 |         match ParsingIterator::from(&cmd) {
[INFO] [stdout]     |                                     ^^^^ help: change this to: `cmd`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/syntax.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     if it_after_second_operand.current() != None {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_some()` instead: `it_after_second_operand.current().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]     = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: all variants have the same postfix: `Bit`
[INFO] [stdout]   --> src/buffer.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / pub enum BitIndex {
[INFO] [stdout] 25 | |     HighestBit,
[INFO] [stdout] 26 | |     LowestBit,
[INFO] [stdout] 27 | |     IndexedBit(usize)
[INFO] [stdout] 28 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: remove the postfixes and use full paths to the variants instead of glob imports
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stdout]    = note: `#[warn(clippy::enum_variant_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]    --> src/buffer.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         while let Some(c) = it.next() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for c in it`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout]     = note: `#[warn(clippy::while_let_on_iterator)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of `size_of::<T>()` to obtain the size of `T` in bits
[INFO] [stdout]    --> src/buffer.rs:163:29
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let buffer_length = size_of::<BufferType>() * 8;
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `BufferType::BITS as usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
[INFO] [stdout]     = note: `#[warn(clippy::manual_bits)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/buffer.rs:164:30
[INFO] [stdout]     |
[INFO] [stdout] 164 |           let length_in_bits = match next_power_of_two_rounded_up(buffer_length - buffer.leading_zeros() as usize) {
[INFO] [stdout]     |  ______________________________^
[INFO] [stdout] 165 | |             Ok(s) => s,
[INFO] [stdout] 166 | |             Err(m) => return Err(m)
[INFO] [stdout] 167 | |         };
[INFO] [stdout]     | |_________^ help: try instead: `next_power_of_two_rounded_up(buffer_length - buffer.leading_zeros() as usize)?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout]     = note: `#[warn(clippy::question_mark)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         self.buffer = self.buffer & !mask_from_bit_to_bit(high_order_bit_index, low_order_bit_index);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= !mask_from_bit_to_bit(high_order_bit_index, low_order_bit_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 | ...   self.buffer = self.buffer | ((mul & mask_n_ones_from_right(high_order_bit_index - low_order_bit_index + 1)) << low_order_bit_index);
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer |= ((mul & mask_n_ones_from_right(high_order_bit_index - low_order_bit_index + 1)) << low_order_bit_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         self.buffer = self.buffer & mask_n_ones_from_right(self.effective_bits);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= mask_n_ones_from_right(self.effective_bits)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |         self.buffer = self.buffer & !(mask_n_ones_from_right(high_index - low_index + 1) << low_index);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= !(mask_n_ones_from_right(high_index - low_index + 1) << low_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 | ...   self.buffer = self.buffer | ((left_bits | (bits_to_shift >> count) & mask_n_ones_from_right(high_index - low_index + 1)) << low_index);
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer |= ((left_bits | (bits_to_shift >> count) & mask_n_ones_from_right(high_index - low_index + 1)) << low_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/buffer.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 | /         return match one_or_zero {
[INFO] [stdout] 286 | |             0 => (bits | mask_from_bit_to_bit(127, high_index + 1 - low_index)).count_zeros() as usize,
[INFO] [stdout] 287 | |             1 => (bits & mask_n_ones_from_right(high_index + 1 - low_index)).count_ones() as usize,
[INFO] [stdout] 288 | |             _ => usize::MAX
[INFO] [stdout] 289 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 285 ~         match one_or_zero {
[INFO] [stdout] 286 +             0 => (bits | mask_from_bit_to_bit(127, high_index + 1 - low_index)).count_zeros() as usize,
[INFO] [stdout] 287 +             1 => (bits & mask_n_ones_from_right(high_index + 1 - low_index)).count_ones() as usize,
[INFO] [stdout] 288 +             _ => usize::MAX
[INFO] [stdout] 289 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of `size_of::<T>()` to obtain the size of `T` in bits
[INFO] [stdout]    --> src/buffer.rs:295:92
[INFO] [stdout]     |
[INFO] [stdout] 295 | ...128| a.reverse_bits() >> (size_of::<BufferType>()*8 - (high_index + 1 - low_index))))
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `BufferType::BITS as usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:312:21
[INFO] [stdout]     |
[INFO] [stdout] 312 |                     result = result | (1u128 << i);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `result |= (1u128 << i)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:324:9
[INFO] [stdout]     |
[INFO] [stdout] 324 |         self.buffer = self.buffer & mask_n_ones_from_right(self.effective_bits);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= mask_n_ones_from_right(self.effective_bits)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of `size_of::<T>()` to obtain the size of `T` in bits
[INFO] [stdout]    --> src/buffer.rs:356:107
[INFO] [stdout]     |
[INFO] [stdout] 356 | ...ing_zeros() as usize) << (size_of::<BufferType>()*8 - self.buffer.leading_zeros() as usize));
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `BufferType::BITS as usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |         self.buffer = self.buffer & mask_n_ones_from_right(size);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= mask_n_ones_from_right(size)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `insert_str()` using a single-character string literal
[INFO] [stdout]    --> src/buffer.rs:410:17
[INFO] [stdout]     |
[INFO] [stdout] 410 |                 formatted.insert_str(0, "0");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `insert` with a character literal: `formatted.insert(0, '0')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout]     = note: `#[warn(clippy::single_char_add_str)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `lines_printed` is never read
[INFO] [stdout]   --> src/main.rs:82:29
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut lines_printed = 0u16;
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `format!` in `write!` args
[INFO] [stdout]    --> src/buffer.rs:489:13
[INFO] [stdout]     |
[INFO] [stdout] 489 |             write!(f, "{}", format!("{:<3}{:>6}  ", first_index_line, first_index_line - 7))?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: combine the `format!(..)` arguments with the outer `write!(..)` call
[INFO] [stdout]     = help: or consider changing `format!` to `format_args!`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#format_in_format_args
[INFO] [stdout]     = note: `#[warn(clippy::format_in_format_args)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `writeln!`
[INFO] [stdout]    --> src/buffer.rs:492:9
[INFO] [stdout]     |
[INFO] [stdout] 492 |         writeln!(f, "")?;
[INFO] [stdout]     |         ^^^^^^^^^^----^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove the empty string
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stdout]     = note: `#[warn(clippy::writeln_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/buffer.rs:508:17
[INFO] [stdout]     |
[INFO] [stdout] 508 |                 buffer.push_str(" ");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `buffer.push(' ')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/buffer.rs:511:17
[INFO] [stdout]     |
[INFO] [stdout] 511 |                 buffer.push_str(" ");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `buffer.push(' ')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `format!` in `write!` args
[INFO] [stdout]    --> src/buffer.rs:523:13
[INFO] [stdout]     |
[INFO] [stdout] 523 |             write!(f, "{}", format!("{:>4} {:<4}  ", second_index_line, second_index_line - 1))?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: combine the `format!(..)` arguments with the outer `write!(..)` call
[INFO] [stdout]     = help: or consider changing `format!` to `format_args!`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#format_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Exponent`, `Fraction`, `Carry`, and `None` are never constructed
[INFO] [stdout]   --> src/syntax.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub enum NamedAccess {
[INFO] [stdout]    |          ----------- variants in this enum
[INFO] [stdout] 56 |     Exponent,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 57 |     Fraction,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 58 |     Carry,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 59 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NamedAccess` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NamedAccessSource` is never constructed
[INFO] [stdout]   --> src/syntax.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub enum LeftOperandSource {
[INFO] [stdout]    |          ----------------- variant in this enum
[INFO] [stdout] 64 |     RangeSource(BitsIndexRange),
[INFO] [stdout] 65 |     NamedAccessSource(NamedAccess),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LeftOperandSource` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NamedAccessSource` is never constructed
[INFO] [stdout]   --> src/syntax.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub enum RightOperandSource {
[INFO] [stdout]    |          ------------------ variant in this enum
[INFO] [stdout] 70 |     RangeSource(BitsIndexRange),
[INFO] [stdout] 71 |     NamedAccessSource(NamedAccess),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RightOperandSource` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Fixed` is never constructed
[INFO] [stdout]   --> src/buffer.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub enum BincBufferType {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 37 |     Fixed,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BincBufferType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `bytes`
[INFO] [stdout]    --> src/syntax.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |         for i in 0..sequence.len() {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]     = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]     |
[INFO] [stdout] 103 -         for i in 0..sequence.len() {
[INFO] [stdout] 103 +         for (i, <item>) in bytes.iter().enumerate().take(sequence.len()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual check for common ascii range
[INFO] [stdout]    --> src/syntax.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |             if !('0'..='9').contains(&c) {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_ascii_check
[INFO] [stdout]     = note: `#[warn(clippy::manual_is_ascii_check)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 149 -             if !('0'..='9').contains(&c) {
[INFO] [stdout] 149 +             if !c.is_ascii_digit() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/syntax.rs:191:20
[INFO] [stdout]     |
[INFO] [stdout] 191 |           Some(c) => match c {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 192 | |             '[' => {
[INFO] [stdout] 193 | |                 let (current_it, range) = syntax_range(it.rewind_n(1));
[INFO] [stdout] 194 | |                 if let Some(c) = current_it.current() {
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |             _ => Ok((it, None))
[INFO] [stdout] 206 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] help: the outer pattern can be modified to include the inner pattern
[INFO] [stdout]    --> src/syntax.rs:191:14
[INFO] [stdout]     |
[INFO] [stdout] 191 |         Some(c) => match c {
[INFO] [stdout]     |              ^ replace this binding
[INFO] [stdout] 192 |             '[' => {
[INFO] [stdout]     |             ^^^ with this pattern
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/operators.rs:631:14
[INFO] [stdout]     |
[INFO] [stdout] 631 |         _ => return Err("Bit width is a necessary argument".to_owned())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 631 -         _ => return Err("Bit width is a necessary argument".to_owned())
[INFO] [stdout] 631 +         _ => Err("Bit width is a necessary argument".to_owned())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/syntax.rs:365:37
[INFO] [stdout]     |
[INFO] [stdout] 365 |         match ParsingIterator::from(&cmd) {
[INFO] [stdout]     |                                     ^^^^ help: change this to: `cmd`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/history.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |         if self.forward_list.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.forward_list.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/syntax.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     if it_after_second_operand.current() != None {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_some()` instead: `it_after_second_operand.current().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]     = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 200 | /     let output = match format {
[INFO] [stdout] 201 | |         "0x" | "0h" => main_buffer.to_string(16, true, prepend0),
[INFO] [stdout] 202 | |         "x" | "h" => main_buffer.to_string(16, false, prepend0),
[INFO] [stdout] 203 | |         "0d" => main_buffer.to_string(10, true, prepend0),
[INFO] [stdout] ...   |
[INFO] [stdout] 209 | |         _ => "".to_owned()
[INFO] [stdout] 210 | |     };
[INFO] [stdout]     | |______- unnecessary `let` binding
[INFO] [stdout] 211 |       output
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]     = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]     |
[INFO] [stdout] 200 ~     
[INFO] [stdout] 201 ~     match format {
[INFO] [stdout] 202 +         "0x" | "0h" => main_buffer.to_string(16, true, prepend0),
[INFO] [stdout] 203 +         "x" | "h" => main_buffer.to_string(16, false, prepend0),
[INFO] [stdout] 204 +         "0d" => main_buffer.to_string(10, true, prepend0),
[INFO] [stdout] 205 +         "d" => main_buffer.to_string(10, false, prepend0),
[INFO] [stdout] 206 +         "0o" => main_buffer.to_string(8, true, prepend0),
[INFO] [stdout] 207 +         "o" => main_buffer.to_string(8, false, prepend0),
[INFO] [stdout] 208 +         "0b" => main_buffer.to_string(2, true, prepend0),
[INFO] [stdout] 209 +         "b" => main_buffer.to_string(2, false, prepend0),
[INFO] [stdout] 210 +         _ => "".to_owned()
[INFO] [stdout] 211 +     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `pat`
[INFO] [stdout]    --> src/syntax.rs:487:14
[INFO] [stdout]     |
[INFO] [stdout] 487 |     for i in 1..pat.len() {
[INFO] [stdout]     |              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]     |
[INFO] [stdout] 487 -     for i in 1..pat.len() {
[INFO] [stdout] 487 +     for <item> in pat.iter().skip(1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/syntax.rs:497:23
[INFO] [stdout]     |
[INFO] [stdout] 497 |         (it, None) if it.current() == None => (), // success
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `it.current().is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/syntax.rs:501:31
[INFO] [stdout]     |
[INFO] [stdout] 501 |         (it, Some(parsed)) if it.current() == None => assert_eq!(0, parsed),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `it.current().is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]    --> src/syntax.rs:506:31
[INFO] [stdout]     |
[INFO] [stdout] 506 |         (it, Some(parsed)) if it.current() == None => assert_eq!(usize::MAX, parsed),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `it.current().is_none()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]    --> src/syntax.rs:515:23
[INFO] [stdout]     |
[INFO] [stdout] 515 |             while let Some(_) = it.next() {
[INFO] [stdout]     |             ----------^^^^^^^------------ help: try: `while it.next().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout]     = note: `#[warn(clippy::redundant_pattern_matching)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]    --> src/syntax.rs:526:23
[INFO] [stdout]     |
[INFO] [stdout] 526 |             while let Some(_) = it.next() {
[INFO] [stdout]     |             ----------^^^^^^^------------ help: try: `while it.next().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stdout]    --> src/syntax.rs:539:20
[INFO] [stdout]     |
[INFO] [stdout] 539 |             if let Some(_) = it.current() {
[INFO] [stdout]     |             -------^^^^^^^--------------- help: try: `if it.current().is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/syntax.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 | /     match syntax_letter(ParsingIterator::from("'aa'").unwrap()) {
[INFO] [stdout] 553 | |         Ok((_, _)) => {
[INFO] [stdout] 554 | |             panic!("syntax_letter() failed to detect that there are several chars")
[INFO] [stdout] ...   |
[INFO] [stdout] 557 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: you might want to preserve the comments from inside the `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 552 ~     if let Ok((_, _)) = syntax_letter(ParsingIterator::from("'aa'").unwrap()) {
[INFO] [stdout] 553 +         panic!("syntax_letter() failed to detect that there are several chars")
[INFO] [stdout] 554 +     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/syntax.rs:559:5
[INFO] [stdout]     |
[INFO] [stdout] 559 | /     match syntax_letter(ParsingIterator::from("''").unwrap()) {
[INFO] [stdout] 560 | |         Ok((_, _)) => {
[INFO] [stdout] 561 | |             panic!("syntax_letter() failed to detect that there are no chars")
[INFO] [stdout] ...   |
[INFO] [stdout] 564 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: you might want to preserve the comments from inside the `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 559 ~     if let Ok((_, _)) = syntax_letter(ParsingIterator::from("''").unwrap()) {
[INFO] [stdout] 560 +         panic!("syntax_letter() failed to detect that there are no chars")
[INFO] [stdout] 561 +     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/syntax.rs:625:16
[INFO] [stdout]     |
[INFO] [stdout] 625 |             if !(left == 3) {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: try: `(left != 3)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/syntax.rs:635:16
[INFO] [stdout]     |
[INFO] [stdout] 635 |             if !(right == 5) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^ help: try: `(right != 5)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: all variants have the same postfix: `Bit`
[INFO] [stdout]   --> src/buffer.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / pub enum BitIndex {
[INFO] [stdout] 25 | |     HighestBit,
[INFO] [stdout] 26 | |     LowestBit,
[INFO] [stdout] 27 | |     IndexedBit(usize)
[INFO] [stdout] 28 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: remove the postfixes and use full paths to the variants instead of glob imports
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stdout]    = note: `#[warn(clippy::enum_variant_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]    --> src/buffer.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         while let Some(c) = it.next() {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for c in it`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout]     = note: `#[warn(clippy::while_let_on_iterator)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of `size_of::<T>()` to obtain the size of `T` in bits
[INFO] [stdout]    --> src/buffer.rs:163:29
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let buffer_length = size_of::<BufferType>() * 8;
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `BufferType::BITS as usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
[INFO] [stdout]     = note: `#[warn(clippy::manual_bits)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `match` expression can be replaced with `?`
[INFO] [stdout]    --> src/buffer.rs:164:30
[INFO] [stdout]     |
[INFO] [stdout] 164 |           let length_in_bits = match next_power_of_two_rounded_up(buffer_length - buffer.leading_zeros() as usize) {
[INFO] [stdout]     |  ______________________________^
[INFO] [stdout] 165 | |             Ok(s) => s,
[INFO] [stdout] 166 | |             Err(m) => return Err(m)
[INFO] [stdout] 167 | |         };
[INFO] [stdout]     | |_________^ help: try instead: `next_power_of_two_rounded_up(buffer_length - buffer.leading_zeros() as usize)?`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#question_mark
[INFO] [stdout]     = note: `#[warn(clippy::question_mark)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |         self.buffer = self.buffer & !mask_from_bit_to_bit(high_order_bit_index, low_order_bit_index);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= !mask_from_bit_to_bit(high_order_bit_index, low_order_bit_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 | ...   self.buffer = self.buffer | ((mul & mask_n_ones_from_right(high_order_bit_index - low_order_bit_index + 1)) << low_order_bit_index);
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer |= ((mul & mask_n_ones_from_right(high_order_bit_index - low_order_bit_index + 1)) << low_order_bit_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         self.buffer = self.buffer & mask_n_ones_from_right(self.effective_bits);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= mask_n_ones_from_right(self.effective_bits)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 255 |         self.buffer = self.buffer & !(mask_n_ones_from_right(high_index - low_index + 1) << low_index);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= !(mask_n_ones_from_right(high_index - low_index + 1) << low_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:261:9
[INFO] [stdout]     |
[INFO] [stdout] 261 | ...   self.buffer = self.buffer | ((left_bits | (bits_to_shift >> count) & mask_n_ones_from_right(high_index - low_index + 1)) << low_index);
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer |= ((left_bits | (bits_to_shift >> count) & mask_n_ones_from_right(high_index - low_index + 1)) << low_index)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/buffer.rs:285:9
[INFO] [stdout]     |
[INFO] [stdout] 285 | /         return match one_or_zero {
[INFO] [stdout] 286 | |             0 => (bits | mask_from_bit_to_bit(127, high_index + 1 - low_index)).count_zeros() as usize,
[INFO] [stdout] 287 | |             1 => (bits & mask_n_ones_from_right(high_index + 1 - low_index)).count_ones() as usize,
[INFO] [stdout] 288 | |             _ => usize::MAX
[INFO] [stdout] 289 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 285 ~         match one_or_zero {
[INFO] [stdout] 286 +             0 => (bits | mask_from_bit_to_bit(127, high_index + 1 - low_index)).count_zeros() as usize,
[INFO] [stdout] 287 +             1 => (bits & mask_n_ones_from_right(high_index + 1 - low_index)).count_ones() as usize,
[INFO] [stdout] 288 +             _ => usize::MAX
[INFO] [stdout] 289 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of `size_of::<T>()` to obtain the size of `T` in bits
[INFO] [stdout]    --> src/buffer.rs:295:92
[INFO] [stdout]     |
[INFO] [stdout] 295 | ...128| a.reverse_bits() >> (size_of::<BufferType>()*8 - (high_index + 1 - low_index))))
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `BufferType::BITS as usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:312:21
[INFO] [stdout]     |
[INFO] [stdout] 312 |                     result = result | (1u128 << i);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `result |= (1u128 << i)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:324:9
[INFO] [stdout]     |
[INFO] [stdout] 324 |         self.buffer = self.buffer & mask_n_ones_from_right(self.effective_bits);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= mask_n_ones_from_right(self.effective_bits)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: usage of `size_of::<T>()` to obtain the size of `T` in bits
[INFO] [stdout]    --> src/buffer.rs:356:107
[INFO] [stdout]     |
[INFO] [stdout] 356 | ...ing_zeros() as usize) << (size_of::<BufferType>()*8 - self.buffer.leading_zeros() as usize));
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `BufferType::BITS as usize`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/buffer.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |         self.buffer = self.buffer & mask_n_ones_from_right(size);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.buffer &= mask_n_ones_from_right(size)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `insert_str()` using a single-character string literal
[INFO] [stdout]    --> src/buffer.rs:410:17
[INFO] [stdout]     |
[INFO] [stdout] 410 |                 formatted.insert_str(0, "0");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `insert` with a character literal: `formatted.insert(0, '0')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout]     = note: `#[warn(clippy::single_char_add_str)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `format!` in `write!` args
[INFO] [stdout]    --> src/buffer.rs:489:13
[INFO] [stdout]     |
[INFO] [stdout] 489 |             write!(f, "{}", format!("{:<3}{:>6}  ", first_index_line, first_index_line - 7))?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: combine the `format!(..)` arguments with the outer `write!(..)` call
[INFO] [stdout]     = help: or consider changing `format!` to `format_args!`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#format_in_format_args
[INFO] [stdout]     = note: `#[warn(clippy::format_in_format_args)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `writeln!`
[INFO] [stdout]    --> src/buffer.rs:492:9
[INFO] [stdout]     |
[INFO] [stdout] 492 |         writeln!(f, "")?;
[INFO] [stdout]     |         ^^^^^^^^^^----^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove the empty string
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stdout]     = note: `#[warn(clippy::writeln_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/buffer.rs:508:17
[INFO] [stdout]     |
[INFO] [stdout] 508 |                 buffer.push_str(" ");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `buffer.push(' ')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calling `push_str()` using a single-character string literal
[INFO] [stdout]    --> src/buffer.rs:511:17
[INFO] [stdout]     |
[INFO] [stdout] 511 |                 buffer.push_str(" ");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ help: consider using `push` with a character literal: `buffer.push(' ')`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `format!` in `write!` args
[INFO] [stdout]    --> src/buffer.rs:523:13
[INFO] [stdout]     |
[INFO] [stdout] 523 |             write!(f, "{}", format!("{:>4} {:<4}  ", second_index_line, second_index_line - 1))?;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: combine the `format!(..)` arguments with the outer `write!(..)` call
[INFO] [stdout]     = help: or consider changing `format!` to `format_args!`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#format_in_format_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: deref which would be done by auto-deref
[INFO] [stdout]    --> src/buffer.rs:601:34
[INFO] [stdout]     |
[INFO] [stdout] 601 |     let n = BincBuffer::from_str(&*u8::MAX.to_string(), 10).unwrap();
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^ help: try: `&u8::MAX.to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_auto_deref
[INFO] [stdout]     = note: `#[warn(clippy::explicit_auto_deref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: deref which would be done by auto-deref
[INFO] [stdout]    --> src/buffer.rs:604:34
[INFO] [stdout]     |
[INFO] [stdout] 604 |     let n = BincBuffer::from_str(&*u32::MAX.to_string(), 10).unwrap();
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^ help: try: `&u32::MAX.to_string()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_auto_deref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/operators.rs:631:14
[INFO] [stdout]     |
[INFO] [stdout] 631 |         _ => return Err("Bit width is a necessary argument".to_owned())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 631 -         _ => return Err("Bit width is a necessary argument".to_owned())
[INFO] [stdout] 631 +         _ => Err("Bit width is a necessary argument".to_owned())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/history.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |         if self.forward_list.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.forward_list.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 200 | /     let output = match format {
[INFO] [stdout] 201 | |         "0x" | "0h" => main_buffer.to_string(16, true, prepend0),
[INFO] [stdout] 202 | |         "x" | "h" => main_buffer.to_string(16, false, prepend0),
[INFO] [stdout] 203 | |         "0d" => main_buffer.to_string(10, true, prepend0),
[INFO] [stdout] ...   |
[INFO] [stdout] 209 | |         _ => "".to_owned()
[INFO] [stdout] 210 | |     };
[INFO] [stdout]     | |______- unnecessary `let` binding
[INFO] [stdout] 211 |       output
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]     = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]     |
[INFO] [stdout] 200 ~     
[INFO] [stdout] 201 ~     match format {
[INFO] [stdout] 202 +         "0x" | "0h" => main_buffer.to_string(16, true, prepend0),
[INFO] [stdout] 203 +         "x" | "h" => main_buffer.to_string(16, false, prepend0),
[INFO] [stdout] 204 +         "0d" => main_buffer.to_string(10, true, prepend0),
[INFO] [stdout] 205 +         "d" => main_buffer.to_string(10, false, prepend0),
[INFO] [stdout] 206 +         "0o" => main_buffer.to_string(8, true, prepend0),
[INFO] [stdout] 207 +         "o" => main_buffer.to_string(8, false, prepend0),
[INFO] [stdout] 208 +         "0b" => main_buffer.to_string(2, true, prepend0),
[INFO] [stdout] 209 +         "b" => main_buffer.to_string(2, false, prepend0),
[INFO] [stdout] 210 +         _ => "".to_owned()
[INFO] [stdout] 211 +     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.85s
[INFO] running `Command { std: "docker" "inspect" "0ce24eaf259bf2108baf8fa995c359117ce575126ec17fc284c0945110c29ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ce24eaf259bf2108baf8fa995c359117ce575126ec17fc284c0945110c29ca3", kill_on_drop: false }`
[INFO] [stdout] 0ce24eaf259bf2108baf8fa995c359117ce575126ec17fc284c0945110c29ca3