[INFO] fetching crate hexcat-rs 0.1.1...
[INFO] linting hexcat-rs-0.1.1 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate hexcat-rs 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate hexcat-rs 0.1.1
[INFO] finished tweaking crates.io crate hexcat-rs 0.1.1
[INFO] tweaked toml for crates.io crate hexcat-rs 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hexcat-rs 0.1.1 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 crates.io crate hexcat-rs 0.1.1 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] a5c84743a91516f24fd814f6b000d2437862aef3eda5655d46d0b419104c90ca
[INFO] running `Command { std: "docker" "start" "-a" "a5c84743a91516f24fd814f6b000d2437862aef3eda5655d46d0b419104c90ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5c84743a91516f24fd814f6b000d2437862aef3eda5655d46d0b419104c90ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c84743a91516f24fd814f6b000d2437862aef3eda5655d46d0b419104c90ca", kill_on_drop: false }`
[INFO] [stdout] a5c84743a91516f24fd814f6b000d2437862aef3eda5655d46d0b419104c90ca
[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] 80cc09415194b0e5df08834ca6949f393fad5423efb49448fe683d5731796d8f
[INFO] running `Command { std: "docker" "start" "-a" "80cc09415194b0e5df08834ca6949f393fad5423efb49448fe683d5731796d8f", kill_on_drop: false }`
[INFO] [stderr]     Checking hexcat-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 71 -     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout] 71 +     if !(use_color == 2 || io::stdout().is_terminal() && outfilename == "") {
[INFO] [stdout]    |
[INFO] [stdout] 71 -     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout] 71 +     if (outfilename != "" || !io::stdout().is_terminal()) && use_color != 2 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison to empty slice
[INFO] [stdout]   --> src/main.rs:71:60
[INFO] [stdout]    |
[INFO] [stdout] 71 |     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!outfilename.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_to_empty
[INFO] [stdout]    = note: `#[warn(clippy::comparison_to_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline
[INFO] [stdout]    --> src/main.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         write!(outfile, "\n")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stdout]     = note: `#[warn(clippy::write_with_newline)]` on by default
[INFO] [stdout] help: use `writeln!` instead
[INFO] [stdout]     |
[INFO] [stdout] 127 -         write!(outfile, "\n")?;
[INFO] [stdout] 127 +         writeln!(outfile)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] help: try
[INFO] [stdout]    |
[INFO] [stdout] 71 -     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout] 71 +     if !(use_color == 2 || io::stdout().is_terminal() && outfilename == "") {
[INFO] [stdout]    |
[INFO] [stdout] 71 -     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout] 71 +     if (outfilename != "" || !io::stdout().is_terminal()) && use_color != 2 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison to empty slice
[INFO] [stdout]   --> src/main.rs:71:60
[INFO] [stdout]    |
[INFO] [stdout] 71 |     if (!io::stdout().is_terminal() && use_color != 2) || (outfilename != "" && use_color != 2) {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!outfilename.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_to_empty
[INFO] [stdout]    = note: `#[warn(clippy::comparison_to_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `write!()` with a format string that ends in a single newline
[INFO] [stdout]    --> src/main.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |         write!(outfile, "\n")?;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
[INFO] [stdout]     = note: `#[warn(clippy::write_with_newline)]` on by default
[INFO] [stdout] help: use `writeln!` instead
[INFO] [stdout]     |
[INFO] [stdout] 127 -         write!(outfile, "\n")?;
[INFO] [stdout] 127 +         writeln!(outfile)?;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "80cc09415194b0e5df08834ca6949f393fad5423efb49448fe683d5731796d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80cc09415194b0e5df08834ca6949f393fad5423efb49448fe683d5731796d8f", kill_on_drop: false }`
[INFO] [stdout] 80cc09415194b0e5df08834ca6949f393fad5423efb49448fe683d5731796d8f