[INFO] updating cached repository LarryLo/spark_submit_helper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/LarryLo/spark_submit_helper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/LarryLo/spark_submit_helper" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/LarryLo/spark_submit_helper"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/LarryLo/spark_submit_helper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LarryLo/spark_submit_helper" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/LarryLo/spark_submit_helper"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/LarryLo/spark_submit_helper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c26d51ba4bd01bfe393c3c222309c69d26a11bb9
[INFO] sha for GitHub repo LarryLo/spark_submit_helper: c26d51ba4bd01bfe393c3c222309c69d26a11bb9
[INFO] validating manifest of LarryLo/spark_submit_helper on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of LarryLo/spark_submit_helper on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing LarryLo/spark_submit_helper
[INFO] finished frobbing LarryLo/spark_submit_helper
[INFO] frobbed toml for LarryLo/spark_submit_helper written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/LarryLo/spark_submit_helper/Cargo.toml
[INFO] started frobbing LarryLo/spark_submit_helper
[INFO] finished frobbing LarryLo/spark_submit_helper
[INFO] frobbed toml for LarryLo/spark_submit_helper written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/LarryLo/spark_submit_helper/Cargo.toml
[INFO] crate LarryLo/spark_submit_helper already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking LarryLo/spark_submit_helper against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-0/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/LarryLo/spark_submit_helper:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 669c21e06f32ae89e19f86404d9670ff15aee5e8f1b7220e58523b859fc029eb
[INFO] running `"docker" "start" "-a" "669c21e06f32ae89e19f86404d9670ff15aee5e8f1b7220e58523b859fc029eb"`
[INFO] [stderr]     Checking hyper v0.10.12
[INFO] [stderr]     Checking iron v0.5.1
[INFO] [stderr]     Checking router v0.5.1
[INFO] [stderr]     Checking spark_submit_helper v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/lang_test/lang.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/lang_test/lang.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]   --> src/lang_test/lang.rs:64:40
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn run_test(&self, solution: &str, version: i8) -> String {
[INFO] [stderr]    |                                        ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mkdir`
[INFO] [stderr]  --> src/user/mod.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mkdir = 
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_mkdir`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lang_test/lang.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         echo(solution, &Path::new(&format!("{}/solution.py", &to)));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lang_test/lang.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         echo(solution, &Path::new(&format!("{}/src/main/scala/org/sparktw/codefight/Solution.scala", &to)));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]   --> src/lang_test/lang.rs:64:40
[INFO] [stderr]    |
[INFO] [stderr] 64 |     fn run_test(&self, solution: &str, version: i8) -> String {
[INFO] [stderr]    |                                        ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mkdir`
[INFO] [stderr]  --> src/user/mod.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mkdir = 
[INFO] [stderr]   |         ^^^^^ help: consider prefixing with an underscore: `_mkdir`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lang_test/lang.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         echo(solution, &Path::new(&format!("{}/solution.py", &to)));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lang_test/lang.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         echo(solution, &Path::new(&format!("{}/src/main/scala/org/sparktw/codefight/Solution.scala", &to)));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.73s
[INFO] running `"docker" "inspect" "669c21e06f32ae89e19f86404d9670ff15aee5e8f1b7220e58523b859fc029eb"`
[INFO] running `"docker" "rm" "-f" "669c21e06f32ae89e19f86404d9670ff15aee5e8f1b7220e58523b859fc029eb"`
[INFO] [stdout] 669c21e06f32ae89e19f86404d9670ff15aee5e8f1b7220e58523b859fc029eb