Nov 17 13:06:22.004 INFO testing NikitaSmall/rust_rpn against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 13:06:22.004 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 13:06:22.603 INFO [stdout] cf00356a62ae562ab4a4edfa95570636aada30e47fb04371afa720c0dac89b1b
Nov 17 13:06:22.609 INFO running `"docker" "start" "-a" "cf00356a62ae562ab4a4edfa95570636aada30e47fb04371afa720c0dac89b1b"`
Nov 17 13:06:24.071 INFO [stderr] usermod: no changes
Nov 17 13:06:24.131 INFO [stderr]    Compiling rpn v0.1.0 (/source)
Nov 17 13:06:24.650 INFO [stderr] warning: field is never used: `raw`
Nov 17 13:06:24.650 INFO [stderr]   --> src/converter.rs:10:5
Nov 17 13:06:24.650 INFO [stderr]    |
Nov 17 13:06:24.650 INFO [stderr] 10 |     raw: String,
Nov 17 13:06:24.651 INFO [stderr]    |     ^^^^^^^^^^^
Nov 17 13:06:24.651 INFO [stderr]    |
Nov 17 13:06:24.651 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 17 13:06:24.651 INFO [stderr] 
Nov 17 13:06:24.652 INFO [stderr] warning: field is never used: `prededence`
Nov 17 13:06:24.652 INFO [stderr]   --> src/converter.rs:12:5
Nov 17 13:06:24.652 INFO [stderr]    |
Nov 17 13:06:24.652 INFO [stderr] 12 |     prededence: HashMap<Stackable, i8>,
Nov 17 13:06:24.652 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 13:06:24.652 INFO [stderr] 
Nov 17 13:06:24.653 INFO [stderr] warning: method is never used: `convert`
Nov 17 13:06:24.653 INFO [stderr]   --> src/converter.rs:16:5
Nov 17 13:06:24.653 INFO [stderr]    |
Nov 17 13:06:24.653 INFO [stderr] 16 |     pub fn convert(raw: String) -> Converter {
Nov 17 13:06:24.653 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 13:06:24.653 INFO [stderr] 
Nov 17 13:06:24.654 INFO [stderr] warning: method is never used: `process`
Nov 17 13:06:24.654 INFO [stderr]   --> src/converter.rs:33:5
Nov 17 13:06:24.654 INFO [stderr]    |
Nov 17 13:06:24.654 INFO [stderr] 33 |     fn process(&mut self) {
Nov 17 13:06:24.654 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 13:06:24.654 INFO [stderr] 
Nov 17 13:06:25.928 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
Nov 17 13:06:25.932 INFO [stderr] su: No module specific data is present
Nov 17 13:06:26.905 INFO running `"docker" "inspect" "cf00356a62ae562ab4a4edfa95570636aada30e47fb04371afa720c0dac89b1b"`
Nov 17 13:06:27.213 INFO running `"docker" "rm" "-f" "cf00356a62ae562ab4a4edfa95570636aada30e47fb04371afa720c0dac89b1b"`
Nov 17 13:06:27.535 INFO [stdout] cf00356a62ae562ab4a4edfa95570636aada30e47fb04371afa720c0dac89b1b
Nov 17 13:06:27.539 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 13:06:28.023 INFO [stdout] 09873f0bc74d83f00036233c1ddfe4ada670d87d8c42553f13f8d1e3336ffceb
Nov 17 13:06:28.025 INFO running `"docker" "start" "-a" "09873f0bc74d83f00036233c1ddfe4ada670d87d8c42553f13f8d1e3336ffceb"`
Nov 17 13:06:29.695 INFO [stderr] usermod: no changes
Nov 17 13:06:29.754 INFO [stderr]    Compiling rpn v0.1.0 (/source)
Nov 17 13:06:30.508 INFO [stderr] warning: variable does not need to be mutable
Nov 17 13:06:30.509 INFO [stderr]   --> src/converter.rs:95:13
Nov 17 13:06:30.510 INFO [stderr]    |
Nov 17 13:06:30.511 INFO [stderr] 95 |         let mut converter = Converter::convert(example_string);
Nov 17 13:06:30.511 INFO [stderr]    |             ----^^^^^^^^^
Nov 17 13:06:30.512 INFO [stderr]    |             |
Nov 17 13:06:30.513 INFO [stderr]    |             help: remove this `mut`
Nov 17 13:06:30.513 INFO [stderr]    |
Nov 17 13:06:30.514 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 13:06:30.515 INFO [stderr] 
Nov 17 13:06:30.517 INFO [stderr] warning: variable does not need to be mutable
Nov 17 13:06:30.518 INFO [stderr]    --> src/converter.rs:103:13
Nov 17 13:06:30.518 INFO [stderr]     |
Nov 17 13:06:30.519 INFO [stderr] 103 |         let mut converter = Converter::convert(example_string);
Nov 17 13:06:30.520 INFO [stderr]     |             ----^^^^^^^^^
Nov 17 13:06:30.520 INFO [stderr]     |             |
Nov 17 13:06:30.521 INFO [stderr]     |             help: remove this `mut`
Nov 17 13:06:30.521 INFO [stderr] 
Nov 17 13:06:32.415 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
Nov 17 13:06:32.416 INFO [stderr] su: No module specific data is present
Nov 17 13:06:33.123 INFO running `"docker" "inspect" "09873f0bc74d83f00036233c1ddfe4ada670d87d8c42553f13f8d1e3336ffceb"`
Nov 17 13:06:33.226 INFO running `"docker" "rm" "-f" "09873f0bc74d83f00036233c1ddfe4ada670d87d8c42553f13f8d1e3336ffceb"`
Nov 17 13:06:33.342 INFO [stdout] 09873f0bc74d83f00036233c1ddfe4ada670d87d8c42553f13f8d1e3336ffceb