Dec 12 00:19:29.626 INFO checking Shyclops/calculator against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 00:19:29.627 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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"`
Dec 12 00:19:30.110 INFO [stdout] b343e100e9e28195ea3ab5df7330324a3552d681230d18442641c955b9ca51fd
Dec 12 00:19:30.114 INFO running `"docker" "start" "-a" "b343e100e9e28195ea3ab5df7330324a3552d681230d18442641c955b9ca51fd"`
Dec 12 00:19:31.327 INFO [stderr] usermod: no changes
Dec 12 00:19:31.372 INFO [stderr]     Checking calculator v0.1.0 (/source)
Dec 12 00:19:32.052 INFO [stderr] warning: unused variable: `operators`
Dec 12 00:19:32.053 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:10
Dec 12 00:19:32.053 INFO [stderr]    |
Dec 12 00:19:32.053 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 12 00:19:32.053 INFO [stderr]    |             ^^^^^^^^^ help: consider using `_operators` instead
Dec 12 00:19:32.053 INFO [stderr]    |
Dec 12 00:19:32.053 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 00:19:32.053 INFO [stderr] 
Dec 12 00:19:32.053 INFO [stderr] warning: unused variable: `o`
Dec 12 00:19:32.053 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:21:25
Dec 12 00:19:32.053 INFO [stderr]    |
Dec 12 00:19:32.053 INFO [stderr] 21 |             Expression::Operator(o)    => {},
Dec 12 00:19:32.053 INFO [stderr]    |                                  ^ help: consider using `_o` instead
Dec 12 00:19:32.053 INFO [stderr] 
Dec 12 00:19:32.053 INFO [stderr] warning: unused variable: `v`
Dec 12 00:19:32.053 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:22:20
Dec 12 00:19:32.053 INFO [stderr]    |
Dec 12 00:19:32.053 INFO [stderr] 22 |             Expression::Val(v)        => output.push(ex),
Dec 12 00:19:32.053 INFO [stderr]    |                             ^ help: consider using `_v` instead
Dec 12 00:19:32.053 INFO [stderr] 
Dec 12 00:19:32.053 INFO [stderr] warning: unused variable: `operator`
Dec 12 00:19:32.053 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:19
Dec 12 00:19:32.053 INFO [stderr]    |
Dec 12 00:19:32.053 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 12 00:19:32.053 INFO [stderr]    |                   ^^^^^^^^ help: consider using `_operator` instead
Dec 12 00:19:32.053 INFO [stderr] 
Dec 12 00:19:32.056 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:19:32.056 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:6
Dec 12 00:19:32.056 INFO [stderr]    |
Dec 12 00:19:32.056 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 12 00:19:32.056 INFO [stderr]    |         ----^^^^^^^^^
Dec 12 00:19:32.056 INFO [stderr]    |         |
Dec 12 00:19:32.057 INFO [stderr]    |         help: remove this `mut`
Dec 12 00:19:32.057 INFO [stderr]    |
Dec 12 00:19:32.057 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:19:32.057 INFO [stderr] 
Dec 12 00:19:32.064 INFO [stderr] warning: function is never used: `get_precedence`
Dec 12 00:19:32.067 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:1
Dec 12 00:19:32.067 INFO [stderr]    |
Dec 12 00:19:32.067 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 12 00:19:32.067 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:19:32.067 INFO [stderr]    |
Dec 12 00:19:32.067 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 00:19:32.067 INFO [stderr] 
Dec 12 00:19:32.260 INFO [stderr] warning: unused variable: `operators`
Dec 12 00:19:32.260 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:10
Dec 12 00:19:32.260 INFO [stderr]    |
Dec 12 00:19:32.260 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 12 00:19:32.260 INFO [stderr]    |             ^^^^^^^^^ help: consider using `_operators` instead
Dec 12 00:19:32.260 INFO [stderr]    |
Dec 12 00:19:32.260 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 00:19:32.260 INFO [stderr] 
Dec 12 00:19:32.260 INFO [stderr] warning: unused variable: `o`
Dec 12 00:19:32.260 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:21:25
Dec 12 00:19:32.260 INFO [stderr]    |
Dec 12 00:19:32.260 INFO [stderr] 21 |             Expression::Operator(o)    => {},
Dec 12 00:19:32.260 INFO [stderr]    |                                  ^ help: consider using `_o` instead
Dec 12 00:19:32.260 INFO [stderr] 
Dec 12 00:19:32.260 INFO [stderr] warning: unused variable: `v`
Dec 12 00:19:32.260 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:22:20
Dec 12 00:19:32.260 INFO [stderr]    |
Dec 12 00:19:32.261 INFO [stderr] 22 |             Expression::Val(v)        => output.push(ex),
Dec 12 00:19:32.261 INFO [stderr]    |                             ^ help: consider using `_v` instead
Dec 12 00:19:32.261 INFO [stderr] 
Dec 12 00:19:32.261 INFO [stderr] warning: unused variable: `operator`
Dec 12 00:19:32.261 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:19
Dec 12 00:19:32.261 INFO [stderr]    |
Dec 12 00:19:32.261 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 12 00:19:32.261 INFO [stderr]    |                   ^^^^^^^^ help: consider using `_operator` instead
Dec 12 00:19:32.261 INFO [stderr] 
Dec 12 00:19:32.261 INFO [stderr] warning: variable does not need to be mutable
Dec 12 00:19:32.261 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:17:6
Dec 12 00:19:32.261 INFO [stderr]    |
Dec 12 00:19:32.261 INFO [stderr] 17 |     let mut operators: Vec<Expression> = Vec::new();
Dec 12 00:19:32.261 INFO [stderr]    |         ----^^^^^^^^^
Dec 12 00:19:32.261 INFO [stderr]    |         |
Dec 12 00:19:32.261 INFO [stderr]    |         help: remove this `mut`
Dec 12 00:19:32.261 INFO [stderr]    |
Dec 12 00:19:32.261 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 00:19:32.261 INFO [stderr] 
Dec 12 00:19:32.261 INFO [stderr] warning: function is never used: `get_precedence`
Dec 12 00:19:32.261 INFO [stderr]   --> src/reverse_polish_notation/parser.rs:82:1
Dec 12 00:19:32.261 INFO [stderr]    |
Dec 12 00:19:32.261 INFO [stderr] 82 | fn get_precedence(operator: String) -> i8 {
Dec 12 00:19:32.261 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 00:19:32.261 INFO [stderr]    |
Dec 12 00:19:32.261 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 00:19:32.261 INFO [stderr] 
Dec 12 00:19:32.908 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
Dec 12 00:19:32.912 INFO [stderr] su: No module specific data is present
Dec 12 00:19:33.846 INFO running `"docker" "inspect" "b343e100e9e28195ea3ab5df7330324a3552d681230d18442641c955b9ca51fd"`
Dec 12 00:19:34.310 INFO running `"docker" "rm" "-f" "b343e100e9e28195ea3ab5df7330324a3552d681230d18442641c955b9ca51fd"`
Dec 12 00:19:34.671 INFO [stdout] b343e100e9e28195ea3ab5df7330324a3552d681230d18442641c955b9ca51fd