[INFO] updating cached repository nrc/rls-vfs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nrc/rls-vfs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nrc/rls-vfs" "work/ex/clippy-test-run/sources/stable/gh/nrc/rls-vfs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/nrc/rls-vfs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nrc/rls-vfs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nrc/rls-vfs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nrc/rls-vfs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e66ae6070a5e8ca52d5631f79c5e66759de0b35a
[INFO] sha for GitHub repo nrc/rls-vfs: e66ae6070a5e8ca52d5631f79c5e66759de0b35a
[INFO] validating manifest of nrc/rls-vfs 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 nrc/rls-vfs 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 nrc/rls-vfs
[INFO] finished frobbing nrc/rls-vfs
[INFO] frobbed toml for nrc/rls-vfs written to work/ex/clippy-test-run/sources/stable/gh/nrc/rls-vfs/Cargo.toml
[INFO] started frobbing nrc/rls-vfs
[INFO] finished frobbing nrc/rls-vfs
[INFO] frobbed toml for nrc/rls-vfs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nrc/rls-vfs/Cargo.toml
[INFO] crate nrc/rls-vfs 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 nrc/rls-vfs against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/nrc/rls-vfs:/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 -Dclippy::into_iter_on_array" "-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] cd588882ba1cd6895b909ad523a71e6fb5f6d611bb4eb268ad6ad4671d97a2b5
[INFO] running `"docker" "start" "-a" "cd588882ba1cd6895b909ad523a71e6fb5f6d611bb4eb268ad6ad4671d97a2b5"`
[INFO] [stderr]     Checking rls-span v0.4.0
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rls-span-0.4.0/src/lib.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | #![feature(proc_macro)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `rls-span`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cd588882ba1cd6895b909ad523a71e6fb5f6d611bb4eb268ad6ad4671d97a2b5"`
[INFO] running `"docker" "rm" "-f" "cd588882ba1cd6895b909ad523a71e6fb5f6d611bb4eb268ad6ad4671d97a2b5"`
[INFO] [stdout] cd588882ba1cd6895b909ad523a71e6fb5f6d611bb4eb268ad6ad4671d97a2b5