[INFO] crate lucid 0.3.0 is already in cache
[INFO] extracting crate lucid 0.3.0 into work/ex/clippy-test-run/sources/stable/reg/lucid/0.3.0
[INFO] extracting crate lucid 0.3.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/lucid/0.3.0
[INFO] validating manifest of lucid-0.3.0 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lucid-0.3.0 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lucid-0.3.0
[INFO] finished frobbing lucid-0.3.0
[INFO] frobbed toml for lucid-0.3.0 written to work/ex/clippy-test-run/sources/stable/reg/lucid/0.3.0/Cargo.toml
[INFO] started frobbing lucid-0.3.0
[INFO] finished frobbing lucid-0.3.0
[INFO] frobbed toml for lucid-0.3.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/lucid/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting lucid-0.3.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/lucid/0.3.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fd783699cb86b104043b43c6ba15b0f2e418aa9132cb14c541c227e5229948f4
[INFO] running `"docker" "start" "-a" "fd783699cb86b104043b43c6ba15b0f2e418aa9132cb14c541c227e5229948f4"`
[INFO] [stderr]     Checking ctrlc v3.1.1
[INFO] [stderr]     Checking lucid v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 | /         match self.verbosity_level {
[INFO] [stderr] 76 | |             VerbosityLevel::Verbose => self.print_with_prefix(msg),
[INFO] [stderr] 77 | |             _ => {}
[INFO] [stderr] 78 | |         }
[INFO] [stderr]    | |_________^ help: try this: `if let VerbosityLevel::Verbose = self.verbosity_level { self.print_with_prefix(msg) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]    --> src/main.rs:213:14
[INFO] [stderr]     |
[INFO] [stderr] 213 |             .unwrap_or("<error: could not read current working directory>".into())
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "<error: could not read current working directory>".into())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:219:27
[INFO] [stderr]     |
[INFO] [stderr] 219 |             output.print(&format!("Going to sleep forever"));
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Going to sleep forever".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 | /         match self.verbosity_level {
[INFO] [stderr] 76 | |             VerbosityLevel::Verbose => self.print_with_prefix(msg),
[INFO] [stderr] 77 | |             _ => {}
[INFO] [stderr] 78 | |         }
[INFO] [stderr]    | |_________^ help: try this: `if let VerbosityLevel::Verbose = self.verbosity_level { self.print_with_prefix(msg) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]    --> src/main.rs:213:14
[INFO] [stderr]     |
[INFO] [stderr] 213 |             .unwrap_or("<error: could not read current working directory>".into())
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| "<error: could not read current working directory>".into())`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:219:27
[INFO] [stderr]     |
[INFO] [stderr] 219 |             output.print(&format!("Going to sleep forever"));
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Going to sleep forever".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `"docker" "inspect" "fd783699cb86b104043b43c6ba15b0f2e418aa9132cb14c541c227e5229948f4"`
[INFO] running `"docker" "rm" "-f" "fd783699cb86b104043b43c6ba15b0f2e418aa9132cb14c541c227e5229948f4"`
[INFO] [stdout] fd783699cb86b104043b43c6ba15b0f2e418aa9132cb14c541c227e5229948f4