Dec 06 11:16:41.383 INFO testing NikitaSmall/rust_rpn against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 11:16:41.383 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-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"`
Dec 06 11:16:41.833 INFO [stdout] 4b4523b29e45958b3ebc4d2f7812abc6dae04890c17753fb0673dd584759b3ed
Dec 06 11:16:41.835 INFO running `"docker" "start" "-a" "4b4523b29e45958b3ebc4d2f7812abc6dae04890c17753fb0673dd584759b3ed"`
Dec 06 11:16:42.963 INFO [stderr] usermod: no changes
Dec 06 11:16:42.998 INFO [stderr]    Compiling rpn v0.1.0 (/source)
Dec 06 11:16:43.408 INFO [stderr] warning: field is never used: `raw`
Dec 06 11:16:43.408 INFO [stderr]   --> src/converter.rs:10:5
Dec 06 11:16:43.408 INFO [stderr]    |
Dec 06 11:16:43.408 INFO [stderr] 10 |     raw: String,
Dec 06 11:16:43.408 INFO [stderr]    |     ^^^^^^^^^^^
Dec 06 11:16:43.408 INFO [stderr]    |
Dec 06 11:16:43.408 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 11:16:43.408 INFO [stderr] 
Dec 06 11:16:43.408 INFO [stderr] warning: field is never used: `prededence`
Dec 06 11:16:43.408 INFO [stderr]   --> src/converter.rs:12:5
Dec 06 11:16:43.408 INFO [stderr]    |
Dec 06 11:16:43.408 INFO [stderr] 12 |     prededence: HashMap<Stackable, i8>,
Dec 06 11:16:43.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 11:16:43.408 INFO [stderr] 
Dec 06 11:16:43.408 INFO [stderr] warning: method is never used: `convert`
Dec 06 11:16:43.408 INFO [stderr]   --> src/converter.rs:16:5
Dec 06 11:16:43.408 INFO [stderr]    |
Dec 06 11:16:43.408 INFO [stderr] 16 |     pub fn convert(raw: String) -> Converter {
Dec 06 11:16:43.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 11:16:43.408 INFO [stderr] 
Dec 06 11:16:43.408 INFO [stderr] warning: method is never used: `process`
Dec 06 11:16:43.408 INFO [stderr]   --> src/converter.rs:33:5
Dec 06 11:16:43.408 INFO [stderr]    |
Dec 06 11:16:43.408 INFO [stderr] 33 |     fn process(&mut self) {
Dec 06 11:16:43.408 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 11:16:43.408 INFO [stderr] 
Dec 06 11:16:44.291 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
Dec 06 11:16:44.296 INFO [stderr] su: No module specific data is present
Dec 06 11:16:44.748 INFO running `"docker" "inspect" "4b4523b29e45958b3ebc4d2f7812abc6dae04890c17753fb0673dd584759b3ed"`
Dec 06 11:16:44.874 INFO running `"docker" "rm" "-f" "4b4523b29e45958b3ebc4d2f7812abc6dae04890c17753fb0673dd584759b3ed"`
Dec 06 11:16:45.124 INFO [stdout] 4b4523b29e45958b3ebc4d2f7812abc6dae04890c17753fb0673dd584759b3ed
Dec 06 11:16:45.126 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-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"`
Dec 06 11:16:45.576 INFO [stdout] 8d303371ecf4f83fa413aaa895ba2fda28da903f758a12a994defcd6e9d0a324
Dec 06 11:16:45.576 INFO running `"docker" "start" "-a" "8d303371ecf4f83fa413aaa895ba2fda28da903f758a12a994defcd6e9d0a324"`
Dec 06 11:16:46.668 INFO [stderr] usermod: no changes
Dec 06 11:16:46.716 INFO [stderr]    Compiling rpn v0.1.0 (/source)
Dec 06 11:16:47.533 INFO [stderr] warning: variable does not need to be mutable
Dec 06 11:16:47.533 INFO [stderr]   --> src/converter.rs:95:13
Dec 06 11:16:47.533 INFO [stderr]    |
Dec 06 11:16:47.533 INFO [stderr] 95 |         let mut converter = Converter::convert(example_string);
Dec 06 11:16:47.533 INFO [stderr]    |             ----^^^^^^^^^
Dec 06 11:16:47.533 INFO [stderr]    |             |
Dec 06 11:16:47.533 INFO [stderr]    |             help: remove this `mut`
Dec 06 11:16:47.533 INFO [stderr]    |
Dec 06 11:16:47.533 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 11:16:47.533 INFO [stderr] 
Dec 06 11:16:47.533 INFO [stderr] warning: variable does not need to be mutable
Dec 06 11:16:47.533 INFO [stderr]    --> src/converter.rs:103:13
Dec 06 11:16:47.533 INFO [stderr]     |
Dec 06 11:16:47.533 INFO [stderr] 103 |         let mut converter = Converter::convert(example_string);
Dec 06 11:16:47.533 INFO [stderr]     |             ----^^^^^^^^^
Dec 06 11:16:47.533 INFO [stderr]     |             |
Dec 06 11:16:47.533 INFO [stderr]     |             help: remove this `mut`
Dec 06 11:16:47.533 INFO [stderr] 
Dec 06 11:16:48.741 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
Dec 06 11:16:48.748 INFO [stderr] su: No module specific data is present
Dec 06 11:16:49.944 INFO running `"docker" "inspect" "8d303371ecf4f83fa413aaa895ba2fda28da903f758a12a994defcd6e9d0a324"`
Dec 06 11:16:50.138 INFO running `"docker" "rm" "-f" "8d303371ecf4f83fa413aaa895ba2fda28da903f758a12a994defcd6e9d0a324"`
Dec 06 11:16:50.399 INFO [stdout] 8d303371ecf4f83fa413aaa895ba2fda28da903f758a12a994defcd6e9d0a324