[INFO] cloning repository https://github.com/buzzxI/rlox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/buzzxI/rlox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FbuzzxI%2Frlox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FbuzzxI%2Frlox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a4ef1eb49b2f0be6c6d04daffb9c5838e100696
[INFO] linting buzzxI/rlox against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FbuzzxI%2Frlox" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/buzzxI/rlox
[INFO] finished tweaking git repo https://github.com/buzzxI/rlox
[INFO] tweaked toml for git repo https://github.com/buzzxI/rlox written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/buzzxI/rlox 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/buzzxI/rlox 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 }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 827cd54a275c0821bee13a6ca434e0854f65afe49d8a287296ad4d251d770726
[INFO] running `Command { std: "docker" "start" "-a" "827cd54a275c0821bee13a6ca434e0854f65afe49d8a287296ad4d251d770726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "827cd54a275c0821bee13a6ca434e0854f65afe49d8a287296ad4d251d770726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "827cd54a275c0821bee13a6ca434e0854f65afe49d8a287296ad4d251d770726", kill_on_drop: false }`
[INFO] [stdout] 827cd54a275c0821bee13a6ca434e0854f65afe49d8a287296ad4d251d770726
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b3b1778c7a7008b296ba659d938ee2d30e74295ddeb8e486f713ab310f5b5aff
[INFO] running `Command { std: "docker" "start" "-a" "b3b1778c7a7008b296ba659d938ee2d30e74295ddeb8e486f713ab310f5b5aff", kill_on_drop: false }`
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]  --> src/object.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum ObjectType {
[INFO] [stdout]   |      ---------- variants in this enum
[INFO] [stdout] 2 |     LoxString,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 3 |     LoxFunction,
[INFO] [stdout] 4 |     LoxNative,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     LoxClosure,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     LoxUpvalue,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 7 |     LoxClass,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 8 |     LoxInstance,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 9 |     LoxMethod,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `obj_type`, `arity`, and `upvalue_count` are never read
[INFO] [stdout]   --> src/object.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct FunctionObj {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 13 |     obj_type: ObjectType,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 14 |     arity: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     upvalue_count: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `map_or` can be simplified
[INFO] [stdout]    --> src/vm/scanner.rs:187:48
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 if c == '.' && !has_decimal && self.peek(0).map_or(true, |c| !c.is_ascii_digit()) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_map_or
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_map_or)]` on by default
[INFO] [stdout] help: use `is_none_or` instead
[INFO] [stdout]     |
[INFO] [stdout] 187 -                 if c == '.' && !has_decimal && self.peek(0).map_or(true, |c| !c.is_ascii_digit()) {
[INFO] [stdout] 187 +                 if c == '.' && !has_decimal && self.peek(0).is_none_or(|c| !c.is_ascii_digit()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `map` over `inspect`
[INFO] [stdout]    --> src/vm/scanner.rs:241:22
[INFO] [stdout]     |
[INFO] [stdout] 241 |         self.peek(0).map(|c| {
[INFO] [stdout]     |                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_inspect
[INFO] [stdout]     = note: `#[warn(clippy::manual_inspect)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 241 ~         self.peek(0).inspect(|c| {
[INFO] [stdout] 242 |             self.current += 1;
[INFO] [stdout] 243 ~             self.current_column += 1; 
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/vm/scanner.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |         self.line = self.line + 1;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.line += 1`
[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: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/vm/compiler.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn compile<'a>(source: &'a str) -> Option<object::FunctionObj> {
[INFO] [stdout]    |                ^^           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 28 - pub fn compile<'a>(source: &'a str) -> Option<object::FunctionObj> {
[INFO] [stdout] 28 + pub fn compile(source: &str) -> Option<object::FunctionObj> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]   --> src/vm/compiler.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     while let Some(token) = scanner.next() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for token in scanner`
[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: all variants have the same prefix: `Lox`
[INFO] [stdout]   --> src/object.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 | / enum ObjectType {
[INFO] [stdout]  2 | |     LoxString,
[INFO] [stdout]  3 | |     LoxFunction,
[INFO] [stdout]  4 | |     LoxNative,
[INFO] [stdout] ...  |
[INFO] [stdout]  9 | |     LoxMethod,
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: remove the prefixes 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 boolean expression can be simplified
[INFO] [stdout]   --> src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     if !args.next().is_none() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^ help: try: `args.next().is_some()`
[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: unneeded `return` statement
[INFO] [stdout]   --> src/lib.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         return run_prompt();
[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] 36 -         return run_prompt();
[INFO] [stdout] 36 +         run_prompt()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/lib.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         return run_file(&config.path);
[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] 38 -         return run_file(&config.path);
[INFO] [stdout] 38 +         run_file(&config.path)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/vm/scanner.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(source: &str) -> Scanner {
[INFO] [stdout]    |                        ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(source: &str) -> Scanner<'_> {
[INFO] [stdout]    |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]  --> src/object.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum ObjectType {
[INFO] [stdout]   |      ---------- variants in this enum
[INFO] [stdout] 2 |     LoxString,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 3 |     LoxFunction,
[INFO] [stdout] 4 |     LoxNative,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 5 |     LoxClosure,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 6 |     LoxUpvalue,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 7 |     LoxClass,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 8 |     LoxInstance,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 9 |     LoxMethod,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `obj_type`, `arity`, and `upvalue_count` are never read
[INFO] [stdout]   --> src/object.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct FunctionObj {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 13 |     obj_type: ObjectType,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 14 |     arity: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     upvalue_count: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `map_or` can be simplified
[INFO] [stdout]    --> src/vm/scanner.rs:187:48
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 if c == '.' && !has_decimal && self.peek(0).map_or(true, |c| !c.is_ascii_digit()) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_map_or
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_map_or)]` on by default
[INFO] [stdout] help: use `is_none_or` instead
[INFO] [stdout]     |
[INFO] [stdout] 187 -                 if c == '.' && !has_decimal && self.peek(0).map_or(true, |c| !c.is_ascii_digit()) {
[INFO] [stdout] 187 +                 if c == '.' && !has_decimal && self.peek(0).is_none_or(|c| !c.is_ascii_digit()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `map` over `inspect`
[INFO] [stdout]    --> src/vm/scanner.rs:241:22
[INFO] [stdout]     |
[INFO] [stdout] 241 |         self.peek(0).map(|c| {
[INFO] [stdout]     |                      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_inspect
[INFO] [stdout]     = note: `#[warn(clippy::manual_inspect)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 241 ~         self.peek(0).inspect(|c| {
[INFO] [stdout] 242 |             self.current += 1;
[INFO] [stdout] 243 ~             self.current_column += 1; 
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/vm/scanner.rs:260:9
[INFO] [stdout]     |
[INFO] [stdout] 260 |         self.line = self.line + 1;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.line += 1`
[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: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]   --> src/vm/compiler.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn compile<'a>(source: &'a str) -> Option<object::FunctionObj> {
[INFO] [stdout]    |                ^^           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]    |
[INFO] [stdout] 28 - pub fn compile<'a>(source: &'a str) -> Option<object::FunctionObj> {
[INFO] [stdout] 28 + pub fn compile(source: &str) -> Option<object::FunctionObj> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]   --> src/vm/compiler.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     while let Some(token) = scanner.next() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for token in scanner`
[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: all variants have the same prefix: `Lox`
[INFO] [stdout]   --> src/object.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 | / enum ObjectType {
[INFO] [stdout]  2 | |     LoxString,
[INFO] [stdout]  3 | |     LoxFunction,
[INFO] [stdout]  4 | |     LoxNative,
[INFO] [stdout] ...  |
[INFO] [stdout]  9 | |     LoxMethod,
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: remove the prefixes 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 boolean expression can be simplified
[INFO] [stdout]   --> src/lib.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 |     if !args.next().is_none() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^ help: try: `args.next().is_some()`
[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: unneeded `return` statement
[INFO] [stdout]   --> src/lib.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         return run_prompt();
[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] 36 -         return run_prompt();
[INFO] [stdout] 36 +         run_prompt()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/lib.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         return run_file(&config.path);
[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] 38 -         return run_file(&config.path);
[INFO] [stdout] 38 +         run_file(&config.path)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/vm/scanner.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(source: &str) -> Scanner {
[INFO] [stdout]    |                        ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(source: &str) -> Scanner<'_> {
[INFO] [stdout]    |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "b3b1778c7a7008b296ba659d938ee2d30e74295ddeb8e486f713ab310f5b5aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b1778c7a7008b296ba659d938ee2d30e74295ddeb8e486f713ab310f5b5aff", kill_on_drop: false }`
[INFO] [stdout] b3b1778c7a7008b296ba659d938ee2d30e74295ddeb8e486f713ab310f5b5aff