[INFO] updating cached repository richardfontana/mimosa
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/richardfontana/mimosa
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/richardfontana/mimosa" "work/ex/clippy-test-run/sources/stable/gh/richardfontana/mimosa"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/richardfontana/mimosa'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/richardfontana/mimosa" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/richardfontana/mimosa"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/richardfontana/mimosa'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 32fba1b14952aeba1cdf9d7897ea6c9cea022e70
[INFO] sha for GitHub repo richardfontana/mimosa: 32fba1b14952aeba1cdf9d7897ea6c9cea022e70
[INFO] validating manifest of richardfontana/mimosa 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 richardfontana/mimosa 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 richardfontana/mimosa
[INFO] finished frobbing richardfontana/mimosa
[INFO] frobbed toml for richardfontana/mimosa written to work/ex/clippy-test-run/sources/stable/gh/richardfontana/mimosa/Cargo.toml
[INFO] started frobbing richardfontana/mimosa
[INFO] finished frobbing richardfontana/mimosa
[INFO] frobbed toml for richardfontana/mimosa written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/richardfontana/mimosa/Cargo.toml
[INFO] crate richardfontana/mimosa has a lockfile. skipping
[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 richardfontana/mimosa against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/richardfontana/mimosa:/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] ef03ded752eb1d4de3c68697d4f07bc44b9716e749b359674c9fd0723d427fc5
[INFO] running `"docker" "start" "-a" "ef03ded752eb1d4de3c68697d4f07bc44b9716e749b359674c9fd0723d427fc5"`
[INFO] [stderr]     Checking mimosa v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/main.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |             let v = reduce_to_comments(s, delims);
[INFO] [stderr]    |                 ^ help: consider using `_v` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/main.rs:55:23
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn reduce_to_comments(s: String, ds: CommentDelimiters) -> Vec<String> {
[INFO] [stderr]    |                       ^ help: consider using `_s` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ds`
[INFO] [stderr]   --> src/main.rs:55:34
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn reduce_to_comments(s: String, ds: CommentDelimiters) -> Vec<String> {
[INFO] [stderr]    |                                  ^^ help: consider using `_ds` instead
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `begin`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     begin: &'static str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `end`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     end: &'static str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[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:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     match f {
[INFO] [stderr] 23 | |         Ok(mut fr) => {
[INFO] [stderr] 24 | |             let mut s = String::new();
[INFO] [stderr] 25 | |             fr.read_to_string(&mut s);
[INFO] [stderr] ...  |
[INFO] [stderr] 29 | |         Err(_) => { },
[INFO] [stderr] 30 | |     }    
[INFO] [stderr]    | |_____^
[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] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 22 |     if let Ok(mut fr) = f {
[INFO] [stderr] 23 |     let mut s = String::new();
[INFO] [stderr] 24 |     fr.read_to_string(&mut s);
[INFO] [stderr] 25 |     let v = reduce_to_comments(s, delims);
[INFO] [stderr] 26 |     println!("_");
[INFO] [stderr] 27 | }    
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             fr.read_to_string(&mut s);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/main.rs:33:18
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn lang_guess(s: &String) -> Lang {
[INFO] [stderr]    |                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/main.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |             let v = reduce_to_comments(s, delims);
[INFO] [stderr]    |                 ^ help: consider using `_v` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/main.rs:55:23
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn reduce_to_comments(s: String, ds: CommentDelimiters) -> Vec<String> {
[INFO] [stderr]    |                       ^ help: consider using `_s` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ds`
[INFO] [stderr]   --> src/main.rs:55:34
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn reduce_to_comments(s: String, ds: CommentDelimiters) -> Vec<String> {
[INFO] [stderr]    |                                  ^^ help: consider using `_ds` instead
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `begin`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     begin: &'static str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `end`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     end: &'static str,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[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:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     match f {
[INFO] [stderr] 23 | |         Ok(mut fr) => {
[INFO] [stderr] 24 | |             let mut s = String::new();
[INFO] [stderr] 25 | |             fr.read_to_string(&mut s);
[INFO] [stderr] ...  |
[INFO] [stderr] 29 | |         Err(_) => { },
[INFO] [stderr] 30 | |     }    
[INFO] [stderr]    | |_____^
[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] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 22 |     if let Ok(mut fr) = f {
[INFO] [stderr] 23 |     let mut s = String::new();
[INFO] [stderr] 24 |     fr.read_to_string(&mut s);
[INFO] [stderr] 25 |     let v = reduce_to_comments(s, delims);
[INFO] [stderr] 26 |     println!("_");
[INFO] [stderr] 27 | }    
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             fr.read_to_string(&mut s);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/main.rs:33:18
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn lang_guess(s: &String) -> Lang {
[INFO] [stderr]    |                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "ef03ded752eb1d4de3c68697d4f07bc44b9716e749b359674c9fd0723d427fc5"`
[INFO] running `"docker" "rm" "-f" "ef03ded752eb1d4de3c68697d4f07bc44b9716e749b359674c9fd0723d427fc5"`
[INFO] [stdout] ef03ded752eb1d4de3c68697d4f07bc44b9716e749b359674c9fd0723d427fc5