[INFO] updating cached repository https://github.com/rajasekarv/native_spark
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8bf245ed64337fbdbe34f34e5410d59b81d2d20d
[INFO] checking rajasekarv/native_spark against try#879b8cb7dc2ad9102994457e73cf78d124926ea5 for pr-73084
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frajasekarv%2Fnative_spark" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rajasekarv/native_spark on toolchain 879b8cb7dc2ad9102994457e73cf78d124926ea5
[INFO] running `"/workspace/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rajasekarv/native_spark
[INFO] finished tweaking git repo https://github.com/rajasekarv/native_spark
[INFO] tweaked toml for git repo https://github.com/rajasekarv/native_spark written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5277274f878469bbe3dee2af4983d337e88742aba98da20a553bb7167d7f89f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "5277274f878469bbe3dee2af4983d337e88742aba98da20a553bb7167d7f89f9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
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[INFO] [stderr]    Compiling zstd-sys v1.4.13+zstd.1.4.3
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[INFO] [stderr]    Compiling vega v0.1.0 (/opt/rustwide/workdir)
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[INFO] [stderr]     Checking serde_traitobject v0.2.5
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[INFO] [stderr]     Checking zstd v0.4.28+zstd.1.4.3
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[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/rdd/pair_rdd.rs:76:56
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let merge_value = Box::new(Fn!(move |(buf, v)| { (f_clone)((buf, v)) }));
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/rdd/pair_rdd.rs:77:60
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let merge_combiners = Box::new(Fn!(move |(b1, b2)| { (func)((b1, b2)) }));
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/rdd/rdd.rs:224:46
[INFO] [stderr]     |
[INFO] [stderr] 224 |               -> Box<dyn Iterator<Item = _>> { (func)(items) });
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/rdd/rdd.rs:443:62
[INFO] [stderr]     |
[INFO] [stderr] 443 |             Fn!(|iter: Box<dyn Iterator<Item = Self::Item>>| { iter.count() as u64 });
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/rdd/rdd.rs:989:19
[INFO] [stderr]     |
[INFO] [stderr] 989 |          -> usize { iter.count() });
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/rdd/pair_rdd.rs:76:56
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let merge_value = Box::new(Fn!(move |(buf, v)| { (f_clone)((buf, v)) }));
[INFO] [stderr]    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/rdd/pair_rdd.rs:77:60
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let merge_combiners = Box::new(Fn!(move |(b1, b2)| { (func)((b1, b2)) }));
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/rdd/rdd.rs:224:46
[INFO] [stderr]     |
[INFO] [stderr] 224 |               -> Box<dyn Iterator<Item = _>> { (func)(items) });
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/rdd/rdd.rs:443:62
[INFO] [stderr]     |
[INFO] [stderr] 443 |             Fn!(|iter: Box<dyn Iterator<Item = Self::Item>>| { iter.count() as u64 });
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/rdd/rdd.rs:989:19
[INFO] [stderr]     |
[INFO] [stderr] 989 |          -> usize { iter.count() });
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/utils/test_utils.rs:12:43
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let rdd_f = Fn!(move |data: u8| -> u8 { data });
[INFO] [stderr]    |                                           ^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/test_rdd.rs:67:31
[INFO] [stderr]    |
[INFO] [stderr] 67 |             |x: i32| Box::new((1..(1 + x))) as Box<dyn Iterator<Item = _>>
[INFO] [stderr]    |                               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5m 02s
[INFO] running `"docker" "inspect" "5277274f878469bbe3dee2af4983d337e88742aba98da20a553bb7167d7f89f9"`
[INFO] running `"docker" "rm" "-f" "5277274f878469bbe3dee2af4983d337e88742aba98da20a553bb7167d7f89f9"`
[INFO] [stdout] 5277274f878469bbe3dee2af4983d337e88742aba98da20a553bb7167d7f89f9