[INFO] crate ledb-derive 0.2.1 is already in cache
[INFO] extracting crate ledb-derive 0.2.1 into work/ex/clippy-test-run/sources/stable/reg/ledb-derive/0.2.1
[INFO] extracting crate ledb-derive 0.2.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ledb-derive/0.2.1
[INFO] validating manifest of ledb-derive-0.2.1 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 ledb-derive-0.2.1 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 ledb-derive-0.2.1
[INFO] finished frobbing ledb-derive-0.2.1
[INFO] frobbed toml for ledb-derive-0.2.1 written to work/ex/clippy-test-run/sources/stable/reg/ledb-derive/0.2.1/Cargo.toml
[INFO] started frobbing ledb-derive-0.2.1
[INFO] finished frobbing ledb-derive-0.2.1
[INFO] frobbed toml for ledb-derive-0.2.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/ledb-derive/0.2.1/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 ledb-derive-0.2.1 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/ledb-derive/0.2.1:/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] 8d2d17b1247e0a68b41f0db10d8eb38a5d084420ec527fc679e5466f0ca2a1db
[INFO] running `"docker" "start" "-a" "8d2d17b1247e0a68b41f0db10d8eb38a5d084420ec527fc679e5466f0ca2a1db"`
[INFO] [stderr]     Checking ledb-derive v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of `or` followed by a function call
[INFO] [stderr]   --> src/document.rs:17:70
[INFO] [stderr]    |
[INFO] [stderr] 17 |                             primary_field = get_serde_rename(&field).or(Some(primary_field_name));
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_else(|| Some(primary_field_name))`
[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/document.rs:19:40
[INFO] [stderr]    |
[INFO] [stderr] 19 |                             return Err(format!("Only one primary key field per document allowed"));
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Only one primary key field per document allowed".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: in an 'if' condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a 'let'
[INFO] [stderr]    --> src/document.rs:124:58
[INFO] [stderr]     |
[INFO] [stderr] 124 |                   && attr.tts.clone().into_iter().any(|tt| {
[INFO] [stderr]     |  __________________________________________________________^
[INFO] [stderr] 125 | |                     if let TokenTree::Group(group) = tt {
[INFO] [stderr] 126 | |                         group.stream().into_iter().any(|tt| {
[INFO] [stderr] 127 | |                             if let TokenTree::Ident(ident) = tt {
[INFO] [stderr] ...   |
[INFO] [stderr] 135 | |                     }
[INFO] [stderr] 136 | |                 }) {
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::block_in_if_condition_stmt)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#block_in_if_condition_stmt
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or` followed by a function call
[INFO] [stderr]   --> src/document.rs:17:70
[INFO] [stderr]    |
[INFO] [stderr] 17 |                             primary_field = get_serde_rename(&field).or(Some(primary_field_name));
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_else(|| Some(primary_field_name))`
[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/document.rs:19:40
[INFO] [stderr]    |
[INFO] [stderr] 19 |                             return Err(format!("Only one primary key field per document allowed"));
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"Only one primary key field per document allowed".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: in an 'if' condition, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a 'let'
[INFO] [stderr]    --> src/document.rs:124:58
[INFO] [stderr]     |
[INFO] [stderr] 124 |                   && attr.tts.clone().into_iter().any(|tt| {
[INFO] [stderr]     |  __________________________________________________________^
[INFO] [stderr] 125 | |                     if let TokenTree::Group(group) = tt {
[INFO] [stderr] 126 | |                         group.stream().into_iter().any(|tt| {
[INFO] [stderr] 127 | |                             if let TokenTree::Ident(ident) = tt {
[INFO] [stderr] ...   |
[INFO] [stderr] 135 | |                     }
[INFO] [stderr] 136 | |                 }) {
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::block_in_if_condition_stmt)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#block_in_if_condition_stmt
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "8d2d17b1247e0a68b41f0db10d8eb38a5d084420ec527fc679e5466f0ca2a1db"`
[INFO] running `"docker" "rm" "-f" "8d2d17b1247e0a68b41f0db10d8eb38a5d084420ec527fc679e5466f0ca2a1db"`
[INFO] [stdout] 8d2d17b1247e0a68b41f0db10d8eb38a5d084420ec527fc679e5466f0ca2a1db