[INFO] cloning repository https://github.com/Ahmadfifs/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ahmadfifs/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmadfifs%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmadfifs%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 909b234cfce2ac01ff130689d6606df8944de994
[INFO] linting Ahmadfifs/learn-rust against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhmadfifs%2Flearn-rust" "/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/Ahmadfifs/learn-rust
[INFO] finished tweaking git repo https://github.com/Ahmadfifs/learn-rust
[INFO] tweaked toml for git repo https://github.com/Ahmadfifs/learn-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ahmadfifs/learn-rust 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/Ahmadfifs/learn-rust 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] 3e4c5262af52d6b86e0ad387cf1b882eff3eb547de487ecb1070b180175111c8
[INFO] running `Command { std: "docker" "start" "-a" "3e4c5262af52d6b86e0ad387cf1b882eff3eb547de487ecb1070b180175111c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e4c5262af52d6b86e0ad387cf1b882eff3eb547de487ecb1070b180175111c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e4c5262af52d6b86e0ad387cf1b882eff3eb547de487ecb1070b180175111c8", kill_on_drop: false }`
[INFO] [stdout] 3e4c5262af52d6b86e0ad387cf1b882eff3eb547de487ecb1070b180175111c8
[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] 5578f298197fe318b176c5f6c765fe87d9d7453dd9aac72becb008645c2b6a85
[INFO] running `Command { std: "docker" "start" "-a" "5578f298197fe318b176c5f6c765fe87d9d7453dd9aac72becb008645c2b6a85", kill_on_drop: false }`
[INFO] [stderr]     Checking learn-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/conditions.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     while b < 4 && true {
[INFO] [stdout]    |           ^^^^^^^^^^^^^ help: try: `b < 4`
[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 implementation of an assign operation
[INFO] [stdout]   --> src/conditions.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 |             a = a + 1;
[INFO] [stdout]    |             ^^^^^^^^^ help: replace it with: `a += 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: manual implementation of an assign operation
[INFO] [stdout]   --> src/conditions.rs:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 |         b = b + 1;
[INFO] [stdout]    |         ^^^^^^^^^ help: replace it with: `b += 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/conditions.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     println!("");
[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#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/conditions.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 |     while b < 4 && true {
[INFO] [stdout]    |           ^^^^^^^^^^^^^ help: try: `b < 4`
[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 implementation of an assign operation
[INFO] [stdout]   --> src/conditions.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 |             a = a + 1;
[INFO] [stdout]    |             ^^^^^^^^^ help: replace it with: `a += 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: manual implementation of an assign operation
[INFO] [stdout]   --> src/conditions.rs:30:3
[INFO] [stdout]    |
[INFO] [stdout] 30 |         b = b + 1;
[INFO] [stdout]    |         ^^^^^^^^^ help: replace it with: `b += 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/conditions.rs:40:2
[INFO] [stdout]    |
[INFO] [stdout] 40 |     println!("");
[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#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "5578f298197fe318b176c5f6c765fe87d9d7453dd9aac72becb008645c2b6a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5578f298197fe318b176c5f6c765fe87d9d7453dd9aac72becb008645c2b6a85", kill_on_drop: false }`
[INFO] [stdout] 5578f298197fe318b176c5f6c765fe87d9d7453dd9aac72becb008645c2b6a85