Dec 19 16:06:39.154 INFO checking hgallagher1993/Calculator against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:06:39.154 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/hgallagher1993/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:06:39.600 INFO [stdout] 3a978c4f777721c56d87d807388b60dcfe53486099701f0fa4bd5aee9b99b549
Dec 19 16:06:39.602 INFO running `"docker" "start" "-a" "3a978c4f777721c56d87d807388b60dcfe53486099701f0fa4bd5aee9b99b549"`
Dec 19 16:06:40.648 INFO [stderr] warning: path `/opt/crater/workdir/src/Calculator.rs` was erroneously implicitly accepted for binary `Calculator`,
Dec 19 16:06:40.648 INFO [stderr] please set bin.path in Cargo.toml
Dec 19 16:06:40.656 INFO [stderr]     Checking Calculator v0.0.1 (/opt/crater/workdir)
Dec 19 16:06:40.829 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:06:40.829 INFO [stderr]   --> src/Calculator.rs:20:9
Dec 19 16:06:40.829 INFO [stderr]    |
Dec 19 16:06:40.829 INFO [stderr] 20 |       if(flag == false)
Dec 19 16:06:40.829 INFO [stderr]    |         ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:06:40.829 INFO [stderr]    |
Dec 19 16:06:40.829 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 16:06:40.829 INFO [stderr] 
Dec 19 16:06:40.829 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:06:40.829 INFO [stderr]   --> src/Calculator.rs:32:9
Dec 19 16:06:40.829 INFO [stderr]    |
Dec 19 16:06:40.829 INFO [stderr] 32 |       if(operator == '=')
Dec 19 16:06:40.829 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:06:40.829 INFO [stderr] 
Dec 19 16:06:40.829 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:06:40.829 INFO [stderr]   --> src/Calculator.rs:20:9
Dec 19 16:06:40.829 INFO [stderr]    |
Dec 19 16:06:40.829 INFO [stderr] 20 |       if(flag == false)
Dec 19 16:06:40.829 INFO [stderr]    |         ^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:06:40.829 INFO [stderr]    |
Dec 19 16:06:40.829 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 16:06:40.829 INFO [stderr] 
Dec 19 16:06:40.829 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 16:06:40.829 INFO [stderr]   --> src/Calculator.rs:32:9
Dec 19 16:06:40.829 INFO [stderr]    |
Dec 19 16:06:40.829 INFO [stderr] 32 |       if(operator == '=')
Dec 19 16:06:40.829 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 16:06:40.829 INFO [stderr] 
Dec 19 16:06:40.860 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:06:40.860 INFO [stderr]   --> src/Calculator.rs:73:8
Dec 19 16:06:40.860 INFO [stderr]    |
Dec 19 16:06:40.860 INFO [stderr] 73 |    let mut operator: char = operator_string.chars()
Dec 19 16:06:40.860 INFO [stderr]    |        ----^^^^^^^^
Dec 19 16:06:40.860 INFO [stderr]    |        |
Dec 19 16:06:40.860 INFO [stderr]    |        help: remove this `mut`
Dec 19 16:06:40.860 INFO [stderr]    |
Dec 19 16:06:40.860 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 16:06:40.860 INFO [stderr] 
Dec 19 16:06:40.860 INFO [stderr] warning: crate `Calculator` should have a snake case name such as `calculator`
Dec 19 16:06:40.860 INFO [stderr]   |
Dec 19 16:06:40.860 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 16:06:40.860 INFO [stderr] 
Dec 19 16:06:40.860 INFO [stderr] warning: variable does not need to be mutable
Dec 19 16:06:40.860 INFO [stderr]   --> src/Calculator.rs:73:8
Dec 19 16:06:40.860 INFO [stderr]    |
Dec 19 16:06:40.860 INFO [stderr] 73 |    let mut operator: char = operator_string.chars()
Dec 19 16:06:40.860 INFO [stderr]    |        ----^^^^^^^^
Dec 19 16:06:40.860 INFO [stderr]    |        |
Dec 19 16:06:40.860 INFO [stderr]    |        help: remove this `mut`
Dec 19 16:06:40.860 INFO [stderr]    |
Dec 19 16:06:40.860 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 16:06:40.860 INFO [stderr] 
Dec 19 16:06:40.860 INFO [stderr] warning: crate `Calculator` should have a snake case name such as `calculator`
Dec 19 16:06:40.860 INFO [stderr]   |
Dec 19 16:06:40.860 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 16:06:40.860 INFO [stderr] 
Dec 19 16:06:40.892 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
Dec 19 16:06:41.230 INFO running `"docker" "inspect" "3a978c4f777721c56d87d807388b60dcfe53486099701f0fa4bd5aee9b99b549"`
Dec 19 16:06:41.409 INFO running `"docker" "rm" "-f" "3a978c4f777721c56d87d807388b60dcfe53486099701f0fa4bd5aee9b99b549"`
Dec 19 16:06:41.512 INFO [stdout] 3a978c4f777721c56d87d807388b60dcfe53486099701f0fa4bd5aee9b99b549