[INFO] updating cached repository Vinatorul/RustyChecker
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Vinatorul/RustyChecker
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Vinatorul/RustyChecker" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Vinatorul/RustyChecker"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Vinatorul/RustyChecker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Vinatorul/RustyChecker" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Vinatorul/RustyChecker"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Vinatorul/RustyChecker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c466e7a1e8b2bd9c5565c1953970ec5249d55fc
[INFO] sha for GitHub repo Vinatorul/RustyChecker: 6c466e7a1e8b2bd9c5565c1953970ec5249d55fc
[INFO] validating manifest of Vinatorul/RustyChecker on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Vinatorul/RustyChecker on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Vinatorul/RustyChecker
[INFO] finished frobbing Vinatorul/RustyChecker
[INFO] frobbed toml for Vinatorul/RustyChecker written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Vinatorul/RustyChecker/Cargo.toml
[INFO] started frobbing Vinatorul/RustyChecker
[INFO] finished frobbing Vinatorul/RustyChecker
[INFO] frobbed toml for Vinatorul/RustyChecker written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/Vinatorul/RustyChecker/Cargo.toml
[INFO] crate Vinatorul/RustyChecker already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Vinatorul/RustyChecker against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-4/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/Vinatorul/RustyChecker:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c7ff6b08306d103c9df51dffbcddff2906f1425d8dad3acb182734474d5d1f8f
[INFO] running `"docker" "start" "-a" "c7ff6b08306d103c9df51dffbcddff2906f1425d8dad3acb182734474d5d1f8f"`
[INFO] [stderr]     Checking rusty_checker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: private type `problem::ProblemError` in public interface (error E0446)
[INFO] [stderr]    --> src/problem.rs:103:2
[INFO] [stderr]     |
[INFO] [stderr] 103 |       pub fn run(&self) -> Result<(), ProblemError> {
[INFO] [stderr]     |  _____^
[INFO] [stderr] 104 | |         let builder = match Command::new("rustc")
[INFO] [stderr] 105 | |             .arg(format!("{}/{}/{}.rs", PROBLEMS_DIR, self.str_id, self.str_id))
[INFO] [stderr] 106 | |             .arg("--out-dir")
[INFO] [stderr] ...   |
[INFO] [stderr] 117 | |         return self.run_test(1);
[INFO] [stderr] 118 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(private_in_public)] on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PROBLEMS_DIR`
[INFO] [stderr]   --> src/problem.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const PROBLEMS_DIR: &'static str = "problems";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INPUT_DIR`
[INFO] [stderr]   --> src/problem.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const INPUT_DIR: &'static str = "input";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `OUTPUT_DIR`
[INFO] [stderr]   --> src/problem.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const OUTPUT_DIR: &'static str = "output";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Problem`
[INFO] [stderr]   --> src/problem.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct Problem {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `State`
[INFO] [stderr]   --> src/problem.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | enum State {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ProblemError`
[INFO] [stderr]   --> src/problem.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | struct ProblemError {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/problem.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new(str_id: String) -> Problem {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/problem.rs:103:2
[INFO] [stderr]     |
[INFO] [stderr] 103 |     pub fn run(&self) -> Result<(), ProblemError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run_test`
[INFO] [stderr]    --> src/problem.rs:120:2
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn run_test(&self, test_no: i32) -> Result<(), ProblemError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `make_error`
[INFO] [stderr]    --> src/problem.rs:169:2
[INFO] [stderr]     |
[INFO] [stderr] 169 |     fn make_error(&self, reason: &'static str, sys_part: String, test_no: i32) -> Result<(), ProblemError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: private type `problem::ProblemError` in public interface (error E0446)
[INFO] [stderr]    --> src/problem.rs:103:2
[INFO] [stderr]     |
[INFO] [stderr] 103 |       pub fn run(&self) -> Result<(), ProblemError> {
[INFO] [stderr]     |  _____^
[INFO] [stderr] 104 | |         let builder = match Command::new("rustc")
[INFO] [stderr] 105 | |             .arg(format!("{}/{}/{}.rs", PROBLEMS_DIR, self.str_id, self.str_id))
[INFO] [stderr] 106 | |             .arg("--out-dir")
[INFO] [stderr] ...   |
[INFO] [stderr] 117 | |         return self.run_test(1);
[INFO] [stderr] 118 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(private_in_public)] on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "c7ff6b08306d103c9df51dffbcddff2906f1425d8dad3acb182734474d5d1f8f"`
[INFO] running `"docker" "rm" "-f" "c7ff6b08306d103c9df51dffbcddff2906f1425d8dad3acb182734474d5d1f8f"`
[INFO] [stdout] c7ff6b08306d103c9df51dffbcddff2906f1425d8dad3acb182734474d5d1f8f