[INFO] crate rust_mpi 0.0.3 is already in cache
[INFO] extracting crate rust_mpi 0.0.3 into work/ex/clippy-test-run/sources/stable/reg/rust_mpi/0.0.3
[INFO] extracting crate rust_mpi 0.0.3 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rust_mpi/0.0.3
[INFO] validating manifest of rust_mpi-0.0.3 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 rust_mpi-0.0.3 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 rust_mpi-0.0.3
[INFO] finished frobbing rust_mpi-0.0.3
[INFO] frobbed toml for rust_mpi-0.0.3 written to work/ex/clippy-test-run/sources/stable/reg/rust_mpi/0.0.3/Cargo.toml
[INFO] started frobbing rust_mpi-0.0.3
[INFO] finished frobbing rust_mpi-0.0.3
[INFO] frobbed toml for rust_mpi-0.0.3 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/rust_mpi/0.0.3/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 rust_mpi-0.0.3 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-5/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/reg/rust_mpi/0.0.3:/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] b1ca9c0e6496b4577177d3ae0e2b2f457197ccd63cb2d81b72ced8c66071171e
[INFO] running `"docker" "start" "-a" "b1ca9c0e6496b4577177d3ae0e2b2f457197ccd63cb2d81b72ced8c66071171e"`
[INFO] [stderr]     Checking rust_mpi v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]  --> src/constants/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub static MPI_COMM_WORLD: i32 = 0x44000000;
[INFO] [stderr]   |                                  ^^^^^^^^^^ help: consider: `0x4400_0000`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]  --> src/constants/mod.rs:8:33
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub static MPI_COMM_SELF: i32 = 0x44000001;
[INFO] [stderr]   |                                 ^^^^^^^^^^ help: consider: `0x4400_0001`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub static MPI_CHAR :i32 = 0x4c000101;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x4c00_0101`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub static MPI_SIGNED_CHAR :i32 = 0x4c000118;
[INFO] [stderr]    |                                   ^^^^^^^^^^ help: consider: `0x4c00_0118`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:14:37
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub static MPI_UNSIGNED_CHAR :i32 = 0x4c000102;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `0x4c00_0102`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:15:28
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub static MPI_BYTE :i32 = 0x4c00010d;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x4c00_010d`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub static MPI_WCHAR :i32 = 0x4c00040e;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x4c00_040e`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:17:29
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub static MPI_SHORT :i32 = 0x4c000203;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x4c00_0203`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:18:38
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub static MPI_UNSIGNED_SHORT :i32 = 0x4c000204;
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: consider: `0x4c00_0204`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:19:27
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub static MPI_INT :i32 = 0x4c000405;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x4c00_0405`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub static MPI_UNSIGNED :i32 = 0x4c000406;
[INFO] [stderr]    |                                ^^^^^^^^^^ help: consider: `0x4c00_0406`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub static MPI_LONG :i32 = 0x4c000807;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x4c00_0807`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:22:37
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub static MPI_UNSIGNED_LONG :i32 = 0x4c000808;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `0x4c00_0808`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:23:29
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub static MPI_FLOAT :i32 = 0x4c00040a;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x4c00_040a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:24:30
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub static MPI_DOUBLE :i32 = 0x4c00080b;
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0x4c00_080b`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:25:35
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub static MPI_LONG_DOUBLE :i32 = 0x4c00100c;
[INFO] [stderr]    |                                   ^^^^^^^^^^ help: consider: `0x4c00_100c`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:26:37
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub static MPI_LONG_LONG_INT :i32 = 0x4c000809;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `0x4c00_0809`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:27:42
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub static MPI_UNSIGNED_LONG_LONG :i32 = 0x4c000819;
[INFO] [stderr]    |                                          ^^^^^^^^^^ help: consider: `0x4c00_0819`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub static MPI_LONG_LONG: i32 = 0x4c000809;
[INFO] [stderr]    |                                 ^^^^^^^^^^ help: consider: `0x4c00_0809`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:30:27
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub static MPI_MAX :i32 = 0x58000001;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0001`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:31:27
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub static MPI_MIN :i32 = 0x58000002;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0002`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:32:27
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub static MPI_SUM :i32 = 0x58000003;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0003`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:33:28
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub static MPI_PROD :i32 = 0x58000004;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0004`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:34:28
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub static MPI_LAND :i32 = 0x58000005;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0005`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub static MPI_BAND :i32 = 0x58000006;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0006`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:36:27
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub static MPI_LOR :i32 = 0x58000007;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0007`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:37:27
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub static MPI_BOR :i32 = 0x58000008;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0008`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:38:28
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub static MPI_LXOR :i32 = 0x58000009;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0009`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub static MPI_BXOR :i32 = 0x5800000a;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_000a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:40:30
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub static MPI_MINLOC :i32 = 0x5800000b;
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0x5800_000b`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:41:30
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub static MPI_MAXLOC :i32 = 0x5800000c;
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0x5800_000c`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:42:31
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub static MPI_REPLACE :i32 = 0x5800000d;
[INFO] [stderr]    |                               ^^^^^^^^^^ help: consider: `0x5800_000d`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:43:29
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub static MPI_NO_OP :i32 = 0x5800000e;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x5800_000e`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         return ret;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         return ret;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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: long literal lacking separators
[INFO] [stderr]  --> src/constants/mod.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub static MPI_COMM_WORLD: i32 = 0x44000000;
[INFO] [stderr]   |                                  ^^^^^^^^^^ help: consider: `0x4400_0000`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]  --> src/constants/mod.rs:8:33
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub static MPI_COMM_SELF: i32 = 0x44000001;
[INFO] [stderr]   |                                 ^^^^^^^^^^ help: consider: `0x4400_0001`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub static MPI_CHAR :i32 = 0x4c000101;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x4c00_0101`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub static MPI_SIGNED_CHAR :i32 = 0x4c000118;
[INFO] [stderr]    |                                   ^^^^^^^^^^ help: consider: `0x4c00_0118`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:14:37
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub static MPI_UNSIGNED_CHAR :i32 = 0x4c000102;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `0x4c00_0102`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:15:28
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub static MPI_BYTE :i32 = 0x4c00010d;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x4c00_010d`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub static MPI_WCHAR :i32 = 0x4c00040e;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x4c00_040e`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:17:29
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub static MPI_SHORT :i32 = 0x4c000203;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x4c00_0203`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:18:38
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub static MPI_UNSIGNED_SHORT :i32 = 0x4c000204;
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: consider: `0x4c00_0204`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:19:27
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub static MPI_INT :i32 = 0x4c000405;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x4c00_0405`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub static MPI_UNSIGNED :i32 = 0x4c000406;
[INFO] [stderr]    |                                ^^^^^^^^^^ help: consider: `0x4c00_0406`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:21:28
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub static MPI_LONG :i32 = 0x4c000807;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x4c00_0807`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:22:37
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub static MPI_UNSIGNED_LONG :i32 = 0x4c000808;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `0x4c00_0808`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:23:29
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub static MPI_FLOAT :i32 = 0x4c00040a;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x4c00_040a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:24:30
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub static MPI_DOUBLE :i32 = 0x4c00080b;
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0x4c00_080b`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:25:35
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub static MPI_LONG_DOUBLE :i32 = 0x4c00100c;
[INFO] [stderr]    |                                   ^^^^^^^^^^ help: consider: `0x4c00_100c`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:26:37
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub static MPI_LONG_LONG_INT :i32 = 0x4c000809;
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: consider: `0x4c00_0809`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:27:42
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub static MPI_UNSIGNED_LONG_LONG :i32 = 0x4c000819;
[INFO] [stderr]    |                                          ^^^^^^^^^^ help: consider: `0x4c00_0819`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub static MPI_LONG_LONG: i32 = 0x4c000809;
[INFO] [stderr]    |                                 ^^^^^^^^^^ help: consider: `0x4c00_0809`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:30:27
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub static MPI_MAX :i32 = 0x58000001;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0001`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:31:27
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub static MPI_MIN :i32 = 0x58000002;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0002`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:32:27
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub static MPI_SUM :i32 = 0x58000003;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0003`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:33:28
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub static MPI_PROD :i32 = 0x58000004;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0004`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:34:28
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub static MPI_LAND :i32 = 0x58000005;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0005`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:35:28
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub static MPI_BAND :i32 = 0x58000006;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0006`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:36:27
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub static MPI_LOR :i32 = 0x58000007;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0007`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:37:27
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub static MPI_BOR :i32 = 0x58000008;
[INFO] [stderr]    |                           ^^^^^^^^^^ help: consider: `0x5800_0008`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:38:28
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub static MPI_LXOR :i32 = 0x58000009;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_0009`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub static MPI_BXOR :i32 = 0x5800000a;
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider: `0x5800_000a`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:40:30
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub static MPI_MINLOC :i32 = 0x5800000b;
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0x5800_000b`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:41:30
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub static MPI_MAXLOC :i32 = 0x5800000c;
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0x5800_000c`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:42:31
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub static MPI_REPLACE :i32 = 0x5800000d;
[INFO] [stderr]    |                               ^^^^^^^^^^ help: consider: `0x5800_000d`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/constants/mod.rs:43:29
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub static MPI_NO_OP :i32 = 0x5800000e;
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0x5800_000e`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         return ret;
[INFO] [stderr]    |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         return ret;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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/lib.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 |         return ret;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: remove `return` as shown: `ret`
[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] error: this public function dereferences a raw pointer but is not marked `unsafe`
[INFO] [stderr]   --> src/lib.rs:58:46
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let ret: i32 = MPI_Comm_rank(c_comm, rank);
[INFO] [stderr]    |                                              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::not_unsafe_ptr_arg_deref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#not_unsafe_ptr_arg_deref
[INFO] [stderr] 
[INFO] [stderr] error: this public function dereferences a raw pointer but is not marked `unsafe`
[INFO] [stderr]   --> src/lib.rs:66:46
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let ret: i32 = MPI_Comm_size(c_comm, size);
[INFO] [stderr]    |                                              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#not_unsafe_ptr_arg_deref
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_mpi`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: this public function dereferences a raw pointer but is not marked `unsafe`
[INFO] [stderr]   --> src/lib.rs:58:46
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let ret: i32 = MPI_Comm_rank(c_comm, rank);
[INFO] [stderr]    |                                              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::not_unsafe_ptr_arg_deref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#not_unsafe_ptr_arg_deref
[INFO] [stderr] 
[INFO] [stderr] error: this public function dereferences a raw pointer but is not marked `unsafe`
[INFO] [stderr]   --> src/lib.rs:66:46
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let ret: i32 = MPI_Comm_size(c_comm, size);
[INFO] [stderr]    |                                              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#not_unsafe_ptr_arg_deref
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_mpi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b1ca9c0e6496b4577177d3ae0e2b2f457197ccd63cb2d81b72ced8c66071171e"`
[INFO] running `"docker" "rm" "-f" "b1ca9c0e6496b4577177d3ae0e2b2f457197ccd63cb2d81b72ced8c66071171e"`
[INFO] [stdout] b1ca9c0e6496b4577177d3ae0e2b2f457197ccd63cb2d81b72ced8c66071171e