Dec 19 05:52:33.735 INFO checking vtsingaras/visafe against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:52:33.735 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/vtsingaras/visafe:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:52:34.232 INFO [stdout] a95e6e6550ba90f941df1fbbaa61afcb7a999f60c030b743d9c179b2b29c1723
Dec 19 05:52:34.236 INFO running `"docker" "start" "-a" "a95e6e6550ba90f941df1fbbaa61afcb7a999f60c030b743d9c179b2b29c1723"`
Dec 19 05:52:35.946 INFO [stderr]     Checking argparse v0.2.1
Dec 19 05:52:36.689 INFO [stderr]     Checking visafe v0.1.0 (/opt/crater/workdir)
Dec 19 05:52:36.948 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:52:36.948 INFO [stderr]    --> src/main.rs:102:13
Dec 19 05:52:36.948 INFO [stderr]     |
Dec 19 05:52:36.948 INFO [stderr] 102 |         let mut checker_cmd = Command::new(options.checker.as_str()).arg(tmppath_str.clone()).stdout(Stdio::piped())
Dec 19 05:52:36.948 INFO [stderr]     |             ----^^^^^^^^^^^
Dec 19 05:52:36.948 INFO [stderr]     |             |
Dec 19 05:52:36.948 INFO [stderr]     |             help: remove this `mut`
Dec 19 05:52:36.948 INFO [stderr]     |
Dec 19 05:52:36.948 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 05:52:36.948 INFO [stderr] 
Dec 19 05:52:36.948 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:52:36.948 INFO [stderr]   --> src/main.rs:39:9
Dec 19 05:52:36.948 INFO [stderr]    |
Dec 19 05:52:36.948 INFO [stderr] 39 |         io::stdout().flush();
Dec 19 05:52:36.948 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:52:36.949 INFO [stderr]    |
Dec 19 05:52:36.949 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:52:36.949 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:52:36.949 INFO [stderr] 
Dec 19 05:52:36.949 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:52:36.949 INFO [stderr]    --> src/main.rs:100:9
Dec 19 05:52:36.949 INFO [stderr]     |
Dec 19 05:52:36.949 INFO [stderr] 100 |         editor_cmd.wait();
Dec 19 05:52:36.949 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Dec 19 05:52:36.949 INFO [stderr]     |
Dec 19 05:52:36.949 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:52:36.949 INFO [stderr] 
Dec 19 05:52:36.949 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:52:36.949 INFO [stderr]    --> src/main.rs:124:13
Dec 19 05:52:36.949 INFO [stderr]     |
Dec 19 05:52:36.949 INFO [stderr] 124 |             fs::remove_file(tmppath_str.clone());
Dec 19 05:52:36.949 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:52:36.949 INFO [stderr]     |
Dec 19 05:52:36.949 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:52:36.949 INFO [stderr] 
Dec 19 05:52:37.000 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:52:37.000 INFO [stderr]    --> src/main.rs:102:13
Dec 19 05:52:37.000 INFO [stderr]     |
Dec 19 05:52:37.000 INFO [stderr] 102 |         let mut checker_cmd = Command::new(options.checker.as_str()).arg(tmppath_str.clone()).stdout(Stdio::piped())
Dec 19 05:52:37.000 INFO [stderr]     |             ----^^^^^^^^^^^
Dec 19 05:52:37.000 INFO [stderr]     |             |
Dec 19 05:52:37.000 INFO [stderr]     |             help: remove this `mut`
Dec 19 05:52:37.000 INFO [stderr]     |
Dec 19 05:52:37.000 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 05:52:37.000 INFO [stderr] 
Dec 19 05:52:37.004 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:52:37.004 INFO [stderr]   --> src/main.rs:39:9
Dec 19 05:52:37.004 INFO [stderr]    |
Dec 19 05:52:37.004 INFO [stderr] 39 |         io::stdout().flush();
Dec 19 05:52:37.004 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:52:37.004 INFO [stderr]    |
Dec 19 05:52:37.004 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:52:37.004 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:52:37.004 INFO [stderr] 
Dec 19 05:52:37.004 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:52:37.004 INFO [stderr]    --> src/main.rs:100:9
Dec 19 05:52:37.004 INFO [stderr]     |
Dec 19 05:52:37.004 INFO [stderr] 100 |         editor_cmd.wait();
Dec 19 05:52:37.004 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Dec 19 05:52:37.004 INFO [stderr]     |
Dec 19 05:52:37.004 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:52:37.004 INFO [stderr] 
Dec 19 05:52:37.004 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:52:37.004 INFO [stderr]    --> src/main.rs:124:13
Dec 19 05:52:37.004 INFO [stderr]     |
Dec 19 05:52:37.004 INFO [stderr] 124 |             fs::remove_file(tmppath_str.clone());
Dec 19 05:52:37.004 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:52:37.004 INFO [stderr]     |
Dec 19 05:52:37.004 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:52:37.005 INFO [stderr] 
Dec 19 05:52:37.036 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
Dec 19 05:52:37.859 INFO running `"docker" "inspect" "a95e6e6550ba90f941df1fbbaa61afcb7a999f60c030b743d9c179b2b29c1723"`
Dec 19 05:52:38.068 INFO running `"docker" "rm" "-f" "a95e6e6550ba90f941df1fbbaa61afcb7a999f60c030b743d9c179b2b29c1723"`
Dec 19 05:52:38.196 INFO [stdout] a95e6e6550ba90f941df1fbbaa61afcb7a999f60c030b743d9c179b2b29c1723