[INFO] updating cached repository MoreAxes/som
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MoreAxes/som
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MoreAxes/som" "work/ex/clippy-test-run/sources/stable/gh/MoreAxes/som"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/MoreAxes/som'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MoreAxes/som" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoreAxes/som"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoreAxes/som'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5f0f2cb31bf1f93c7d1dee89ab9aec7ec0cf4678
[INFO] sha for GitHub repo MoreAxes/som: 5f0f2cb31bf1f93c7d1dee89ab9aec7ec0cf4678
[INFO] validating manifest of MoreAxes/som 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 MoreAxes/som 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 MoreAxes/som
[INFO] finished frobbing MoreAxes/som
[INFO] frobbed toml for MoreAxes/som written to work/ex/clippy-test-run/sources/stable/gh/MoreAxes/som/Cargo.toml
[INFO] started frobbing MoreAxes/som
[INFO] finished frobbing MoreAxes/som
[INFO] frobbed toml for MoreAxes/som written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/MoreAxes/som/Cargo.toml
[INFO] crate MoreAxes/som 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] [stderr]     Blocking waiting for file lock on the registry index
[INFO] linting MoreAxes/som 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/gh/MoreAxes/som:/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] db3ce3131facf8f75748746d8eb0d3cd339623ba83e7dbdbc82d30cb6b6b6136
[INFO] running `"docker" "start" "-a" "db3ce3131facf8f75748746d8eb0d3cd339623ba83e7dbdbc82d30cb6b6b6136"`
[INFO] [stderr]     Checking phf_shared v0.7.20
[INFO] [stderr]     Checking serde_json v0.8.4
[INFO] [stderr]     Checking clap v2.19.2
[INFO] [stderr]    Compiling palette v0.2.1
[INFO] [stderr]     Checking ctrlc v2.0.1
[INFO] [stderr]    Compiling serde_derive v0.8.19
[INFO] [stderr]     Checking enum_primitive v0.1.0
[INFO] [stderr]     Checking phf v0.7.20
[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/serde_derive-0.8.19/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro, proc_macro_lib)]
[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 `serde_derive`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "db3ce3131facf8f75748746d8eb0d3cd339623ba83e7dbdbc82d30cb6b6b6136"`
[INFO] running `"docker" "rm" "-f" "db3ce3131facf8f75748746d8eb0d3cd339623ba83e7dbdbc82d30cb6b6b6136"`
[INFO] [stdout] db3ce3131facf8f75748746d8eb0d3cd339623ba83e7dbdbc82d30cb6b6b6136