[INFO] crate shippai_derive 0.3.2 is already in cache
[INFO] extracting crate shippai_derive 0.3.2 into work/ex/clippy-test-run/sources/stable/reg/shippai_derive/0.3.2
[INFO] extracting crate shippai_derive 0.3.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/shippai_derive/0.3.2
[INFO] validating manifest of shippai_derive-0.3.2 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 shippai_derive-0.3.2 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 shippai_derive-0.3.2
[INFO] finished frobbing shippai_derive-0.3.2
[INFO] frobbed toml for shippai_derive-0.3.2 written to work/ex/clippy-test-run/sources/stable/reg/shippai_derive/0.3.2/Cargo.toml
[INFO] started frobbing shippai_derive-0.3.2
[INFO] finished frobbing shippai_derive-0.3.2
[INFO] frobbed toml for shippai_derive-0.3.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/shippai_derive/0.3.2/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 shippai_derive-0.3.2 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/shippai_derive/0.3.2:/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] cfb104d8316e7649fa680397887a3b9c25a006ca47991124a83a1cfd80b59b09
[INFO] running `"docker" "start" "-a" "cfb104d8316e7649fa680397887a3b9c25a006ca47991124a83a1cfd80b59b09"`
[INFO] [stderr]     Checking quote v0.5.2
[INFO] [stderr]     Checking syn v0.13.11
[INFO] [stderr]     Checking synstructure v0.8.1
[INFO] [stderr]     Checking shippai_derive v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] error: for loop over `$ single`, which is an `Option`. This is more readably written as an `if let` statement.
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     quote! {
[INFO] [stderr] 23 | |         #[no_mangle]
[INFO] [stderr] 24 | |         pub unsafe extern "C" fn #fn_name(t: *const ShippaiError) -> *const #error_name {
[INFO] [stderr] 25 | |             (*t).error
[INFO] [stderr] ...  |
[INFO] [stderr] 31 | |         #( #variant_helpers )*
[INFO] [stderr] 32 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::for_loop_over_option)] on by default
[INFO] [stderr]    = help: consider replacing `for $ first in $ single` with `if let Some($ first) = $ single`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_loop_over_option
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn impl_enums(error_name: &syn::Ident, ast: &syn::DeriveInput) -> Option<quote::Tokens> {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: consider passing by value instead: `syn::Ident`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/lib.rs:53:19
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let indices = (1 .. (exported_discriminants.len() + 1))
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(1..=exported_discriminants.len())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `shippai_derive`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: for loop over `$ single`, which is an `Option`. This is more readably written as an `if let` statement.
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | /     quote! {
[INFO] [stderr] 23 | |         #[no_mangle]
[INFO] [stderr] 24 | |         pub unsafe extern "C" fn #fn_name(t: *const ShippaiError) -> *const #error_name {
[INFO] [stderr] 25 | |             (*t).error
[INFO] [stderr] ...  |
[INFO] [stderr] 31 | |         #( #variant_helpers )*
[INFO] [stderr] 32 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::for_loop_over_option)] on by default
[INFO] [stderr]    = help: consider replacing `for $ first in $ single` with `if let Some($ first) = $ single`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_loop_over_option
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn impl_enums(error_name: &syn::Ident, ast: &syn::DeriveInput) -> Option<quote::Tokens> {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: consider passing by value instead: `syn::Ident`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/lib.rs:53:19
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let indices = (1 .. (exported_discriminants.len() + 1))
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(1..=exported_discriminants.len())`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `shippai_derive`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cfb104d8316e7649fa680397887a3b9c25a006ca47991124a83a1cfd80b59b09"`
[INFO] running `"docker" "rm" "-f" "cfb104d8316e7649fa680397887a3b9c25a006ca47991124a83a1cfd80b59b09"`
[INFO] [stdout] cfb104d8316e7649fa680397887a3b9c25a006ca47991124a83a1cfd80b59b09