[INFO] cloning repository https://github.com/pratham-exe/rush
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pratham-exe/rush" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpratham-exe%2Frush", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpratham-exe%2Frush'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30b8b440bd9898920c5cf42ab50e3f40822e80a8
[INFO] linting pratham-exe/rush against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpratham-exe%2Frush" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pratham-exe/rush
[INFO] finished tweaking git repo https://github.com/pratham-exe/rush
[INFO] tweaked toml for git repo https://github.com/pratham-exe/rush written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pratham-exe/rush 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/pratham-exe/rush 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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 46f25bcbf325e375b9f12d750f6a7ae0f1a6fc20c7063f164e91cc2319790e82
[INFO] running `Command { std: "docker" "start" "-a" "46f25bcbf325e375b9f12d750f6a7ae0f1a6fc20c7063f164e91cc2319790e82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46f25bcbf325e375b9f12d750f6a7ae0f1a6fc20c7063f164e91cc2319790e82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f25bcbf325e375b9f12d750f6a7ae0f1a6fc20c7063f164e91cc2319790e82", kill_on_drop: false }`
[INFO] [stdout] 46f25bcbf325e375b9f12d750f6a7ae0f1a6fc20c7063f164e91cc2319790e82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 36745c90f011828efd1da10b22ab1b473abdb5300060e53d94441a1f31b79252
[INFO] running `Command { std: "docker" "start" "-a" "36745c90f011828efd1da10b22ab1b473abdb5300060e53d94441a1f31b79252", kill_on_drop: false }`
[INFO] [stderr]     Checking rush v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]  --> src/built_ins/cd.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     if command.len() == 0 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `command.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: the borrowed expression implements the required traits
[INFO] [stdout]   --> src/built_ins/cd.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |         if env::set_current_dir(&home_dir).is_err() {
[INFO] [stdout]    |                                 ^^^^^^^^^ help: change this to: `home_dir`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the borrowed expression implements the required traits
[INFO] [stdout]   --> src/built_ins/cd.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |         if env::set_current_dir(&new_dir).is_err() {
[INFO] [stdout]    |                                 ^^^^^^^^ help: change this to: `new_dir`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]  --> src/built_ins/cd.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |     if command.len() == 0 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `command.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 boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/grep.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |             if !line.find(pattern).is_some() {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line.find(pattern).is_none()`
[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: the borrowed expression implements the required traits
[INFO] [stdout]   --> src/built_ins/cd.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 |         if env::set_current_dir(&home_dir).is_err() {
[INFO] [stdout]    |                                 ^^^^^^^^^ help: change this to: `home_dir`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the borrowed expression implements the required traits
[INFO] [stdout]   --> src/built_ins/cd.rs:23:33
[INFO] [stdout]    |
[INFO] [stdout] 23 |         if env::set_current_dir(&new_dir).is_err() {
[INFO] [stdout]    |                                 ^^^^^^^^ help: change this to: `new_dir`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/usr_bins/grep.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         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: length comparison to zero
[INFO] [stdout]  --> src/usr_bins/ls.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     if command.len() == 0 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `command.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] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:39:46
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:45:46
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/grep.rs:22:16
[INFO] [stdout]    |
[INFO] [stdout] 22 |             if !line.find(pattern).is_some() {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line.find(pattern).is_none()`
[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: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:92:45
[INFO] [stdout]    |
[INFO] [stdout] 92 |                    if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:98:45
[INFO] [stdout]    |
[INFO] [stdout] 98 |                    if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/usr_bins/ls.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     if command.len() == 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `command.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] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         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] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> src/usr_bins/grep.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         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: length comparison to zero
[INFO] [stdout]  --> src/usr_bins/ls.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     if command.len() == 0 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `command.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] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:39:46
[INFO] [stdout]    |
[INFO] [stdout] 39 |                     if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:45:46
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:92:45
[INFO] [stdout]    |
[INFO] [stdout] 92 |                    if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/usr_bins/ls.rs:98:45
[INFO] [stdout]    |
[INFO] [stdout] 98 |                    if check_flags == '-' && !flags.find('a').is_some() && ch == '.' {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `flags.find('a').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/usr_bins/ls.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     if command.len() == 0 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `command.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] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         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] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "36745c90f011828efd1da10b22ab1b473abdb5300060e53d94441a1f31b79252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36745c90f011828efd1da10b22ab1b473abdb5300060e53d94441a1f31b79252", kill_on_drop: false }`
[INFO] [stdout] 36745c90f011828efd1da10b22ab1b473abdb5300060e53d94441a1f31b79252