Dec 18 05:27:29.314 INFO checking Shyclops/calculator against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 05:27:29.314 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/Shyclops/calculator:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 05:27:29.806 INFO [stdout] fa77eb689aad4c22db94eed6b4a04bb75066c5aa9db101a66d6b7d0e044472d7
Dec 18 05:27:29.812 INFO running `"docker" "start" "-a" "fa77eb689aad4c22db94eed6b4a04bb75066c5aa9db101a66d6b7d0e044472d7"`
Dec 18 05:27:31.608 INFO [stderr]     Checking calculator v0.1.0 (/opt/crater/workdir)
Dec 18 05:27:32.180 INFO [stderr] warning: unused variable: `operators`
Dec 18 05:27:32.180 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:10
Dec 18 05:27:32.180 INFO [stderr]    |
Dec 18 05:27:32.180 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 18 05:27:32.180 INFO [stderr]    |             ^^^^^^^^^ help: consider using `_operators` instead
Dec 18 05:27:32.180 INFO [stderr]    |
Dec 18 05:27:32.180 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 05:27:32.180 INFO [stderr] 
Dec 18 05:27:32.180 INFO [stderr] warning: unused variable: `o`
Dec 18 05:27:32.180 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:21:25
Dec 18 05:27:32.180 INFO [stderr]    |
Dec 18 05:27:32.180 INFO [stderr] 21 |             Expression::Operator(o)    => {},
Dec 18 05:27:32.180 INFO [stderr]    |                                  ^ help: consider using `_o` instead
Dec 18 05:27:32.180 INFO [stderr] 
Dec 18 05:27:32.180 INFO [stderr] warning: unused variable: `v`
Dec 18 05:27:32.180 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:22:20
Dec 18 05:27:32.180 INFO [stderr]    |
Dec 18 05:27:32.180 INFO [stderr] 22 |             Expression::Val(v)        => output.push(ex),
Dec 18 05:27:32.180 INFO [stderr]    |                             ^ help: consider using `_v` instead
Dec 18 05:27:32.180 INFO [stderr] 
Dec 18 05:27:32.180 INFO [stderr] warning: unused variable: `operator`
Dec 18 05:27:32.180 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:19
Dec 18 05:27:32.181 INFO [stderr]    |
Dec 18 05:27:32.181 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 18 05:27:32.181 INFO [stderr]    |                   ^^^^^^^^ help: consider using `_operator` instead
Dec 18 05:27:32.181 INFO [stderr] 
Dec 18 05:27:32.188 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:27:32.188 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:6
Dec 18 05:27:32.188 INFO [stderr]    |
Dec 18 05:27:32.188 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 18 05:27:32.188 INFO [stderr]    |         ----^^^^^^^^^
Dec 18 05:27:32.188 INFO [stderr]    |         |
Dec 18 05:27:32.188 INFO [stderr]    |         help: remove this `mut`
Dec 18 05:27:32.188 INFO [stderr]    |
Dec 18 05:27:32.188 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 05:27:32.188 INFO [stderr] 
Dec 18 05:27:32.196 INFO [stderr] warning: function is never used: `get_precedence`
Dec 18 05:27:32.196 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:1
Dec 18 05:27:32.196 INFO [stderr]    |
Dec 18 05:27:32.196 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 18 05:27:32.196 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 05:27:32.196 INFO [stderr]    |
Dec 18 05:27:32.196 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 05:27:32.196 INFO [stderr] 
Dec 18 05:27:32.216 INFO [stderr] warning: unused variable: `operators`
Dec 18 05:27:32.216 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:10
Dec 18 05:27:32.216 INFO [stderr]    |
Dec 18 05:27:32.216 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 18 05:27:32.216 INFO [stderr]    |             ^^^^^^^^^ help: consider using `_operators` instead
Dec 18 05:27:32.216 INFO [stderr]    |
Dec 18 05:27:32.216 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 05:27:32.216 INFO [stderr] 
Dec 18 05:27:32.216 INFO [stderr] warning: unused variable: `o`
Dec 18 05:27:32.216 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:21:25
Dec 18 05:27:32.216 INFO [stderr]    |
Dec 18 05:27:32.216 INFO [stderr] 21 |             Expression::Operator(o)    => {},
Dec 18 05:27:32.216 INFO [stderr]    |                                  ^ help: consider using `_o` instead
Dec 18 05:27:32.216 INFO [stderr] 
Dec 18 05:27:32.216 INFO [stderr] warning: unused variable: `v`
Dec 18 05:27:32.216 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:22:20
Dec 18 05:27:32.216 INFO [stderr]    |
Dec 18 05:27:32.216 INFO [stderr] 22 |             Expression::Val(v)        => output.push(ex),
Dec 18 05:27:32.216 INFO [stderr]    |                             ^ help: consider using `_v` instead
Dec 18 05:27:32.216 INFO [stderr] 
Dec 18 05:27:32.216 INFO [stderr] warning: unused variable: `operator`
Dec 18 05:27:32.216 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:19
Dec 18 05:27:32.216 INFO [stderr]    |
Dec 18 05:27:32.217 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 18 05:27:32.217 INFO [stderr]    |                   ^^^^^^^^ help: consider using `_operator` instead
Dec 18 05:27:32.217 INFO [stderr] 
Dec 18 05:27:32.220 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:27:32.220 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:6
Dec 18 05:27:32.220 INFO [stderr]    |
Dec 18 05:27:32.220 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 18 05:27:32.220 INFO [stderr]    |         ----^^^^^^^^^
Dec 18 05:27:32.220 INFO [stderr]    |         |
Dec 18 05:27:32.220 INFO [stderr]    |         help: remove this `mut`
Dec 18 05:27:32.220 INFO [stderr]    |
Dec 18 05:27:32.220 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 05:27:32.220 INFO [stderr] 
Dec 18 05:27:32.220 INFO [stderr] warning: function is never used: `get_precedence`
Dec 18 05:27:32.220 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:1
Dec 18 05:27:32.220 INFO [stderr]    |
Dec 18 05:27:32.220 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 18 05:27:32.220 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 05:27:32.221 INFO [stderr]    |
Dec 18 05:27:32.221 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 05:27:32.221 INFO [stderr] 
Dec 18 05:27:32.816 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
Dec 18 05:27:34.184 INFO running `"docker" "inspect" "fa77eb689aad4c22db94eed6b4a04bb75066c5aa9db101a66d6b7d0e044472d7"`
Dec 18 05:27:34.546 INFO running `"docker" "rm" "-f" "fa77eb689aad4c22db94eed6b4a04bb75066c5aa9db101a66d6b7d0e044472d7"`
Dec 18 05:27:34.964 INFO [stdout] fa77eb689aad4c22db94eed6b4a04bb75066c5aa9db101a66d6b7d0e044472d7