Nov 01 10:51:17.739 INFO checking NikitaSmall/rust_rpn against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 10:51:17.740 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-3/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 01 10:51:18.228 INFO blam! 085dbb2567cad39f6c0e5342f37fe3cfb5981f1bc614399119ec31ff15222dc6
Nov 01 10:51:18.232 INFO running `"docker" "start" "-a" "085dbb2567cad39f6c0e5342f37fe3cfb5981f1bc614399119ec31ff15222dc6"`
Nov 01 10:51:19.300 INFO kablam! usermod: no changes
Nov 01 10:51:19.364 INFO kablam!     Checking rpn v0.1.0 (/source)
Nov 01 10:51:20.016 INFO kablam! warning: field is never used: `raw`
Nov 01 10:51:20.016 INFO kablam!   --> src/converter.rs:10:5
Nov 01 10:51:20.016 INFO kablam!    |
Nov 01 10:51:20.016 INFO kablam! 10 |     raw: String,
Nov 01 10:51:20.016 INFO kablam!    |     ^^^^^^^^^^^
Nov 01 10:51:20.016 INFO kablam!    |
Nov 01 10:51:20.016 INFO kablam!    = note: #[warn(dead_code)] on by default
Nov 01 10:51:20.016 INFO kablam! 
Nov 01 10:51:20.020 INFO kablam! warning: field is never used: `prededence`
Nov 01 10:51:20.020 INFO kablam!   --> src/converter.rs:12:5
Nov 01 10:51:20.020 INFO kablam!    |
Nov 01 10:51:20.020 INFO kablam! 12 |     prededence: HashMap<Stackable, i8>,
Nov 01 10:51:20.020 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 10:51:20.020 INFO kablam! 
Nov 01 10:51:20.020 INFO kablam! warning: method is never used: `convert`
Nov 01 10:51:20.020 INFO kablam!   --> src/converter.rs:16:5
Nov 01 10:51:20.020 INFO kablam!    |
Nov 01 10:51:20.020 INFO kablam! 16 |     pub fn convert(raw: String) -> Converter {
Nov 01 10:51:20.020 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 10:51:20.020 INFO kablam! 
Nov 01 10:51:20.020 INFO kablam! warning: method is never used: `process`
Nov 01 10:51:20.020 INFO kablam!   --> src/converter.rs:33:5
Nov 01 10:51:20.020 INFO kablam!    |
Nov 01 10:51:20.020 INFO kablam! 33 |     fn process(&mut self) {
Nov 01 10:51:20.020 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 01 10:51:20.020 INFO kablam! 
Nov 01 10:51:20.152 INFO kablam! warning: variable does not need to be mutable
Nov 01 10:51:20.152 INFO kablam!   --> src/converter.rs:95:13
Nov 01 10:51:20.152 INFO kablam!    |
Nov 01 10:51:20.152 INFO kablam! 95 |         let mut converter = Converter::convert(example_string);
Nov 01 10:51:20.152 INFO kablam!    |             ----^^^^^^^^^
Nov 01 10:51:20.152 INFO kablam!    |             |
Nov 01 10:51:20.152 INFO kablam!    |             help: remove this `mut`
Nov 01 10:51:20.152 INFO kablam!    |
Nov 01 10:51:20.152 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 10:51:20.152 INFO kablam! 
Nov 01 10:51:20.152 INFO kablam! warning: variable does not need to be mutable
Nov 01 10:51:20.152 INFO kablam!    --> src/converter.rs:103:13
Nov 01 10:51:20.152 INFO kablam!     |
Nov 01 10:51:20.152 INFO kablam! 103 |         let mut converter = Converter::convert(example_string);
Nov 01 10:51:20.152 INFO kablam!     |             ----^^^^^^^^^
Nov 01 10:51:20.152 INFO kablam!     |             |
Nov 01 10:51:20.152 INFO kablam!     |             help: remove this `mut`
Nov 01 10:51:20.152 INFO kablam! 
Nov 01 10:51:21.121 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
Nov 01 10:51:21.125 INFO kablam! su: No module specific data is present
Nov 01 10:51:22.188 INFO running `"docker" "rm" "-f" "085dbb2567cad39f6c0e5342f37fe3cfb5981f1bc614399119ec31ff15222dc6"`
Nov 01 10:51:22.516 INFO blam! 085dbb2567cad39f6c0e5342f37fe3cfb5981f1bc614399119ec31ff15222dc6