Nov 27 17:28:37.182 INFO checking vtsingaras/visafe against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 17:28:37.184 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-1/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 27 17:28:37.753 INFO [stdout] 73d240436be9d8178c2f35e4efb9a04c4a0868984a5193db2d4c845f4c6fea8b
Nov 27 17:28:37.758 INFO running `"docker" "start" "-a" "73d240436be9d8178c2f35e4efb9a04c4a0868984a5193db2d4c845f4c6fea8b"`
Nov 27 17:28:40.992 INFO [stderr] usermod: no changes
Nov 27 17:28:41.056 INFO [stderr]     Checking argparse v0.2.1
Nov 27 17:28:41.870 INFO [stderr]     Checking visafe v0.1.0 (/source)
Nov 27 17:28:42.219 INFO [stderr] warning: variable does not need to be mutable
Nov 27 17:28:42.220 INFO [stderr]    --> src/main.rs:102:13
Nov 27 17:28:42.221 INFO [stderr]     |
Nov 27 17:28:42.222 INFO [stderr] 102 |         let mut checker_cmd = Command::new(options.checker.as_str()).arg(tmppath_str.clone()).stdout(Stdio::piped())
Nov 27 17:28:42.222 INFO [stderr]     |             ----^^^^^^^^^^^
Nov 27 17:28:42.223 INFO [stderr]     |             |
Nov 27 17:28:42.223 INFO [stderr]     |             help: remove this `mut`
Nov 27 17:28:42.244 INFO [stderr]     |
Nov 27 17:28:42.245 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 27 17:28:42.246 INFO [stderr] 
Nov 27 17:28:42.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 17:28:42.248 INFO [stderr]   --> src/main.rs:39:9
Nov 27 17:28:42.248 INFO [stderr]    |
Nov 27 17:28:42.249 INFO [stderr] 39 |         io::stdout().flush();
Nov 27 17:28:42.250 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Nov 27 17:28:42.250 INFO [stderr]    |
Nov 27 17:28:42.251 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 27 17:28:42.252 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 17:28:42.252 INFO [stderr] 
Nov 27 17:28:42.253 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 17:28:42.254 INFO [stderr]    --> src/main.rs:100:9
Nov 27 17:28:42.254 INFO [stderr]     |
Nov 27 17:28:42.255 INFO [stderr] 100 |         editor_cmd.wait();
Nov 27 17:28:42.256 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Nov 27 17:28:42.256 INFO [stderr]     |
Nov 27 17:28:42.257 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 17:28:42.257 INFO [stderr] 
Nov 27 17:28:42.258 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 17:28:42.259 INFO [stderr]    --> src/main.rs:124:13
Nov 27 17:28:42.259 INFO [stderr]     |
Nov 27 17:28:42.260 INFO [stderr] 124 |             fs::remove_file(tmppath_str.clone());
Nov 27 17:28:42.260 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 17:28:42.261 INFO [stderr]     |
Nov 27 17:28:42.262 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 17:28:42.262 INFO [stderr] 
Nov 27 17:28:42.295 INFO [stderr] warning: variable does not need to be mutable
Nov 27 17:28:42.296 INFO [stderr]    --> src/main.rs:102:13
Nov 27 17:28:42.297 INFO [stderr]     |
Nov 27 17:28:42.298 INFO [stderr] 102 |         let mut checker_cmd = Command::new(options.checker.as_str()).arg(tmppath_str.clone()).stdout(Stdio::piped())
Nov 27 17:28:42.298 INFO [stderr]     |             ----^^^^^^^^^^^
Nov 27 17:28:42.299 INFO [stderr]     |             |
Nov 27 17:28:42.299 INFO [stderr]     |             help: remove this `mut`
Nov 27 17:28:42.300 INFO [stderr]     |
Nov 27 17:28:42.301 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 27 17:28:42.301 INFO [stderr] 
Nov 27 17:28:42.302 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 17:28:42.303 INFO [stderr]   --> src/main.rs:39:9
Nov 27 17:28:42.303 INFO [stderr]    |
Nov 27 17:28:42.304 INFO [stderr] 39 |         io::stdout().flush();
Nov 27 17:28:42.304 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Nov 27 17:28:42.305 INFO [stderr]    |
Nov 27 17:28:42.306 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 27 17:28:42.307 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 17:28:42.308 INFO [stderr] 
Nov 27 17:28:42.309 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 17:28:42.309 INFO [stderr]    --> src/main.rs:100:9
Nov 27 17:28:42.310 INFO [stderr]     |
Nov 27 17:28:42.311 INFO [stderr] 100 |         editor_cmd.wait();
Nov 27 17:28:42.311 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Nov 27 17:28:42.312 INFO [stderr]     |
Nov 27 17:28:42.313 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 17:28:42.313 INFO [stderr] 
Nov 27 17:28:42.314 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 27 17:28:42.315 INFO [stderr]    --> src/main.rs:124:13
Nov 27 17:28:42.316 INFO [stderr]     |
Nov 27 17:28:42.316 INFO [stderr] 124 |             fs::remove_file(tmppath_str.clone());
Nov 27 17:28:42.317 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 17:28:42.318 INFO [stderr]     |
Nov 27 17:28:42.318 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 27 17:28:42.319 INFO [stderr] 
Nov 27 17:28:42.337 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
Nov 27 17:28:42.340 INFO [stderr] su: No module specific data is present
Nov 27 17:28:43.654 INFO running `"docker" "inspect" "73d240436be9d8178c2f35e4efb9a04c4a0868984a5193db2d4c845f4c6fea8b"`
Nov 27 17:28:43.993 INFO running `"docker" "rm" "-f" "73d240436be9d8178c2f35e4efb9a04c4a0868984a5193db2d4c845f4c6fea8b"`
Nov 27 17:28:44.341 INFO [stdout] 73d240436be9d8178c2f35e4efb9a04c4a0868984a5193db2d4c845f4c6fea8b