[INFO] cloning repository https://github.com/krotokrit/postfix-notation-calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krotokrit/postfix-notation-calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrotokrit%2Fpostfix-notation-calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrotokrit%2Fpostfix-notation-calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78d35370a5f60ae85c9b5dbbe86c1203f6222c56
[INFO] linting krotokrit/postfix-notation-calculator against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrotokrit%2Fpostfix-notation-calculator" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/krotokrit/postfix-notation-calculator
[INFO] finished tweaking git repo https://github.com/krotokrit/postfix-notation-calculator
[INFO] tweaked toml for git repo https://github.com/krotokrit/postfix-notation-calculator written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/krotokrit/postfix-notation-calculator 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/krotokrit/postfix-notation-calculator 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 6f9af31a757213d59240a8cc213fb59b8f03e65fa8943ebaf605ec7d45df4e5d
[INFO] running `Command { std: "docker" "start" "-a" "6f9af31a757213d59240a8cc213fb59b8f03e65fa8943ebaf605ec7d45df4e5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f9af31a757213d59240a8cc213fb59b8f03e65fa8943ebaf605ec7d45df4e5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f9af31a757213d59240a8cc213fb59b8f03e65fa8943ebaf605ec7d45df4e5d", kill_on_drop: false }`
[INFO] [stdout] 6f9af31a757213d59240a8cc213fb59b8f03e65fa8943ebaf605ec7d45df4e5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e4022dfd8731408b31b1ee486decbec8b2b5771465b036f17d137ba6b620154d
[INFO] running `Command { std: "docker" "start" "-a" "e4022dfd8731408b31b1ee486decbec8b2b5771465b036f17d137ba6b620154d", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking Calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/functions.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   while stack.len() > 0 && stack.last().cloned().unwrap() != '(' && operators_priorities[&c] >= operators_priorities[stack.last(...
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!stack.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: this loop could be written as a `while let` loop
[INFO] [stdout]   --> src/functions.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | /     loop {
[INFO] [stdout] 59 | |         if let Some(caps) = re.captures(&postfix_notation) {
[INFO] [stdout] 60 | |             let first = caps.name("f").unwrap().as_str().parse::<u32>().unwrap();
[INFO] [stdout] 61 | |             let second = caps.name("s").unwrap().as_str().parse::<u32>().unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |     }
[INFO] [stdout]    | |_____^ help: try: `while let Some(caps) = re.captures(&postfix_notation) { .. }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stdout]    = note: `#[warn(clippy::while_let_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/functions.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     return Default::default();
[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] 103 -     return Default::default();
[INFO] [stdout] 103 +     Default::default()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/functions.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     if !(braces_checker_result == char::default()){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(braces_checker_result != char::default())`
[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: manual check for common ascii range
[INFO] [stdout]    --> src/functions.rs:111:39
[INFO] [stdout]     |
[INFO] [stdout] 111 |     if infix_notation.chars().any(|c| matches!(c, 'a'..='z')) {
[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] 111 -     if infix_notation.chars().any(|c| matches!(c, 'a'..='z')) {
[INFO] [stdout] 111 +     if infix_notation.chars().any(|c: char| c.is_ascii_lowercase()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/functions.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...   while stack.len() > 0 && stack.last().cloned().unwrap() != '(' && operators_priorities[&c] >= operators_priorities[stack.last(...
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!stack.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: this loop could be written as a `while let` loop
[INFO] [stdout]   --> src/functions.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | /     loop {
[INFO] [stdout] 59 | |         if let Some(caps) = re.captures(&postfix_notation) {
[INFO] [stdout] 60 | |             let first = caps.name("f").unwrap().as_str().parse::<u32>().unwrap();
[INFO] [stdout] 61 | |             let second = caps.name("s").unwrap().as_str().parse::<u32>().unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 71 | |     }
[INFO] [stdout]    | |_____^ help: try: `while let Some(caps) = re.captures(&postfix_notation) { .. }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stdout]    = note: `#[warn(clippy::while_let_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/functions.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     return Default::default();
[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] 103 -     return Default::default();
[INFO] [stdout] 103 +     Default::default()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/functions.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     if !(braces_checker_result == char::default()){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(braces_checker_result != char::default())`
[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: manual check for common ascii range
[INFO] [stdout]    --> src/functions.rs:111:39
[INFO] [stdout]     |
[INFO] [stdout] 111 |     if infix_notation.chars().any(|c| matches!(c, 'a'..='z')) {
[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] 111 -     if infix_notation.chars().any(|c| matches!(c, 'a'..='z')) {
[INFO] [stdout] 111 +     if infix_notation.chars().any(|c: char| c.is_ascii_lowercase()) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "e4022dfd8731408b31b1ee486decbec8b2b5771465b036f17d137ba6b620154d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4022dfd8731408b31b1ee486decbec8b2b5771465b036f17d137ba6b620154d", kill_on_drop: false }`
[INFO] [stdout] e4022dfd8731408b31b1ee486decbec8b2b5771465b036f17d137ba6b620154d