[INFO] updating cached repository atherlangga/db-tutorial-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/atherlangga/db-tutorial-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/atherlangga/db-tutorial-rust" "work/ex/clippy-test-run/sources/stable/gh/atherlangga/db-tutorial-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/atherlangga/db-tutorial-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/atherlangga/db-tutorial-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atherlangga/db-tutorial-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atherlangga/db-tutorial-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64082dabad524fd330a1ea7ac3701afc22a10cf1
[INFO] sha for GitHub repo atherlangga/db-tutorial-rust: 64082dabad524fd330a1ea7ac3701afc22a10cf1
[INFO] validating manifest of atherlangga/db-tutorial-rust 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 atherlangga/db-tutorial-rust 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 atherlangga/db-tutorial-rust
[INFO] finished frobbing atherlangga/db-tutorial-rust
[INFO] frobbed toml for atherlangga/db-tutorial-rust written to work/ex/clippy-test-run/sources/stable/gh/atherlangga/db-tutorial-rust/Cargo.toml
[INFO] started frobbing atherlangga/db-tutorial-rust
[INFO] finished frobbing atherlangga/db-tutorial-rust
[INFO] frobbed toml for atherlangga/db-tutorial-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/atherlangga/db-tutorial-rust/Cargo.toml
[INFO] crate atherlangga/db-tutorial-rust 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 atherlangga/db-tutorial-rust 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/atherlangga/db-tutorial-rust:/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] 11a59aa55ad18d5d3b7ab246f82aa6a0e902cf56548055b67fe7649aa5c68f8b
[INFO] running `"docker" "start" "-a" "11a59aa55ad18d5d3b7ab246f82aa6a0e902cf56548055b67fe7649aa5c68f8b"`
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking bincode v1.0.0
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking db v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         return Err(format!("Unrecognized command: {}", command));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(format!("Unrecognized command: {}", command))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     return Err("Statement is neither INSERT nor SELECT".to_string());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("Statement is neither INSERT nor SELECT".to_string())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:103:35
[INFO] [stderr]     |
[INFO] [stderr] 103 |         Statement::Insert(row) => return execute_insert(table, row),
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `execute_insert(table, row)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:104:30
[INFO] [stderr]     |
[INFO] [stderr] 104 |         Statement::Select => return execute_select(table)
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `execute_select(table)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     return Ok(())
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     return Ok(())
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:76:9
[INFO] [stderr]    |
[INFO] [stderr] 76 |         return Err(format!("Unrecognized command: {}", command));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(format!("Unrecognized command: {}", command))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     return Err("Statement is neither INSERT nor SELECT".to_string());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err("Statement is neither INSERT nor SELECT".to_string())`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:103:35
[INFO] [stderr]     |
[INFO] [stderr] 103 |         Statement::Insert(row) => return execute_insert(table, row),
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `execute_insert(table, row)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:104:30
[INFO] [stderr]     |
[INFO] [stderr] 104 |         Statement::Select => return execute_select(table)
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `execute_select(table)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     return Ok(())
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     return Ok(())
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:35:37
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 if line.starts_with(".") {
[INFO] [stderr]    |                                     ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 | /                     match meta_command_result {
[INFO] [stderr] 38 | |                         Err(err) => println!("Error: {:?}", err),
[INFO] [stderr] 39 | |                         _ => (),
[INFO] [stderr] 40 | |                     }
[INFO] [stderr]    | |_____________________^ help: try this: `if let Err(err) = meta_command_result { println!("Error: {:?}", err) }`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/main.rs:35:37
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 if line.starts_with(".") {
[INFO] [stderr]    |                                     ^^^ help: try using a char instead: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 | /                     match meta_command_result {
[INFO] [stderr] 38 | |                         Err(err) => println!("Error: {:?}", err),
[INFO] [stderr] 39 | |                         _ => (),
[INFO] [stderr] 40 | |                     }
[INFO] [stderr]    | |_____________________^ help: try this: `if let Err(err) = meta_command_result { println!("Error: {:?}", err) }`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 6.86s
[INFO] running `"docker" "inspect" "11a59aa55ad18d5d3b7ab246f82aa6a0e902cf56548055b67fe7649aa5c68f8b"`
[INFO] running `"docker" "rm" "-f" "11a59aa55ad18d5d3b7ab246f82aa6a0e902cf56548055b67fe7649aa5c68f8b"`
[INFO] [stdout] 11a59aa55ad18d5d3b7ab246f82aa6a0e902cf56548055b67fe7649aa5c68f8b