[INFO] cloning repository https://github.com/SujalChoudhari/JohnCenaLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SujalChoudhari/JohnCenaLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSujalChoudhari%2FJohnCenaLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSujalChoudhari%2FJohnCenaLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] def07e1e29d3b6e6c048cd8dc64e56fdb638cd33
[INFO] linting SujalChoudhari/JohnCenaLang against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSujalChoudhari%2FJohnCenaLang" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SujalChoudhari/JohnCenaLang
[INFO] finished tweaking git repo https://github.com/SujalChoudhari/JohnCenaLang
[INFO] tweaked toml for git repo https://github.com/SujalChoudhari/JohnCenaLang written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SujalChoudhari/JohnCenaLang 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/SujalChoudhari/JohnCenaLang 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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 3966e22bb9fb20d165a60b118b5057c867680dbcc35f23cba058e95b48058b17
[INFO] running `Command { std: "docker" "start" "-a" "3966e22bb9fb20d165a60b118b5057c867680dbcc35f23cba058e95b48058b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3966e22bb9fb20d165a60b118b5057c867680dbcc35f23cba058e95b48058b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3966e22bb9fb20d165a60b118b5057c867680dbcc35f23cba058e95b48058b17", kill_on_drop: false }`
[INFO] [stdout] 3966e22bb9fb20d165a60b118b5057c867680dbcc35f23cba058e95b48058b17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] dedc497ebeffd9604ad212f5844ba13416efc6e4e112f5091fa2d307f0e4d6f1
[INFO] running `Command { std: "docker" "start" "-a" "dedc497ebeffd9604ad212f5844ba13416efc6e4e112f5091fa2d307f0e4d6f1", kill_on_drop: false }`
[INFO] [stderr]     Checking john_cena_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: name `LEFT` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     LEFT,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Left`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout]   = note: `#[warn(clippy::upper_case_acronyms)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `RIGHT` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     RIGHT,
[INFO] [stdout]   |     ^^^^^ help: consider making the acronym lowercase, except the initial letter: `Right`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `INCR` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     INCR,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Incr`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `DECR` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     DECR,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Decr`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `READ` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     READ,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Read`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `READCHAR` contains a capitalized acronym
[INFO] [stdout]   --> src/constants.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     READCHAR,
[INFO] [stdout]    |     ^^^^^^^^ help: consider making the acronym lowercase, except the initial letter: `Readchar`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `WRITE` contains a capitalized acronym
[INFO] [stdout]   --> src/constants.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     WRITE,
[INFO] [stdout]    |     ^^^^^ help: consider making the acronym lowercase, except the initial letter: `Write`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/constants.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     return code_to_instruction_map;
[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] 29 -     return code_to_instruction_map;
[INFO] [stdout] 29 +     code_to_instruction_map
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]   --> src/environment.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 |             memory: iter::repeat(0).take(size).collect(),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n(0, size)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout]    = note: `#[warn(clippy::manual_repeat_n)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     if !fs::metadata(file_path).is_ok() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `fs::metadata(file_path).is_err()`
[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/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     return source_code;
[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] 26 -     return source_code;
[INFO] [stdout] 26 +     source_code
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     return instruction_array;
[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] 55 -     return instruction_array;
[INFO] [stdout] 55 +     instruction_array
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/main.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn tokenize(source_code: &String) -> Vec<Instruction> {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 29 - fn tokenize(source_code: &String) -> Vec<Instruction> {
[INFO] [stdout] 29 + fn tokenize(source_code: &str) -> Vec<Instruction> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |             if new_line.len() > 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!new_line.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: name `LEFT` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     LEFT,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Left`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout]   = note: `#[warn(clippy::upper_case_acronyms)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `RIGHT` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     RIGHT,
[INFO] [stdout]   |     ^^^^^ help: consider making the acronym lowercase, except the initial letter: `Right`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `INCR` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     INCR,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Incr`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `DECR` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     DECR,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Decr`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `READ` contains a capitalized acronym
[INFO] [stdout]  --> src/constants.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     READ,
[INFO] [stdout]   |     ^^^^ help: consider making the acronym lowercase, except the initial letter: `Read`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `READCHAR` contains a capitalized acronym
[INFO] [stdout]   --> src/constants.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     READCHAR,
[INFO] [stdout]    |     ^^^^^^^^ help: consider making the acronym lowercase, except the initial letter: `Readchar`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: name `WRITE` contains a capitalized acronym
[INFO] [stdout]   --> src/constants.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     WRITE,
[INFO] [stdout]    |     ^^^^^ help: consider making the acronym lowercase, except the initial letter: `Write`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/constants.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     return code_to_instruction_map;
[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] 29 -     return code_to_instruction_map;
[INFO] [stdout] 29 +     code_to_instruction_map
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]   --> src/environment.rs:12:21
[INFO] [stdout]    |
[INFO] [stdout] 12 |             memory: iter::repeat(0).take(size).collect(),
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n(0, size)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout]    = note: `#[warn(clippy::manual_repeat_n)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     if !fs::metadata(file_path).is_ok() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `fs::metadata(file_path).is_err()`
[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/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     return source_code;
[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] 26 -     return source_code;
[INFO] [stdout] 26 +     source_code
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     return instruction_array;
[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] 55 -     return instruction_array;
[INFO] [stdout] 55 +     instruction_array
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/main.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn tokenize(source_code: &String) -> Vec<Instruction> {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]    = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 29 - fn tokenize(source_code: &String) -> Vec<Instruction> {
[INFO] [stdout] 29 + fn tokenize(source_code: &str) -> Vec<Instruction> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |             if new_line.len() > 0 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!new_line.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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "dedc497ebeffd9604ad212f5844ba13416efc6e4e112f5091fa2d307f0e4d6f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedc497ebeffd9604ad212f5844ba13416efc6e4e112f5091fa2d307f0e4d6f1", kill_on_drop: false }`
[INFO] [stdout] dedc497ebeffd9604ad212f5844ba13416efc6e4e112f5091fa2d307f0e4d6f1