[INFO] updating cached repository hgallagher1993/Calculator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hgallagher1993/Calculator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hgallagher1993/Calculator" "work/ex/beta-1.37-6/sources/1.36.0/gh/hgallagher1993/Calculator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/hgallagher1993/Calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hgallagher1993/Calculator" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/hgallagher1993/Calculator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/hgallagher1993/Calculator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d9a503417e94bb8d5beef654147b5cf798d55c40
[INFO] sha for GitHub repo hgallagher1993/Calculator: d9a503417e94bb8d5beef654147b5cf798d55c40
[INFO] validating manifest of hgallagher1993/Calculator on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hgallagher1993/Calculator on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hgallagher1993/Calculator
[INFO] finished frobbing hgallagher1993/Calculator
[INFO] frobbed toml for hgallagher1993/Calculator written to work/ex/beta-1.37-6/sources/1.36.0/gh/hgallagher1993/Calculator/Cargo.toml
[INFO] started frobbing hgallagher1993/Calculator
[INFO] finished frobbing hgallagher1993/Calculator
[INFO] frobbed toml for hgallagher1993/Calculator written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/hgallagher1993/Calculator/Cargo.toml
[INFO] crate hgallagher1993/Calculator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing hgallagher1993/Calculator against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 665de899c2786577d63a0ebf8fdf2ebc0ef30f7baddddea1bf8c879a4315d17e
[INFO] running `"docker" "start" "-a" "665de899c2786577d63a0ebf8fdf2ebc0ef30f7baddddea1bf8c879a4315d17e"`
[INFO] [stderr] warning: path `/opt/crater/workdir/src/Calculator.rs` was erroneously implicitly accepted for binary `Calculator`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling Calculator v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/Calculator.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |       if(flag == false)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/Calculator.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |       if(operator == '=')
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/Calculator.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |    let mut operator: char = operator_string.chars()
[INFO] [stderr]    |        ----^^^^^^^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Calculator` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `calculator`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "665de899c2786577d63a0ebf8fdf2ebc0ef30f7baddddea1bf8c879a4315d17e"`
[INFO] running `"docker" "rm" "-f" "665de899c2786577d63a0ebf8fdf2ebc0ef30f7baddddea1bf8c879a4315d17e"`
[INFO] [stdout] 665de899c2786577d63a0ebf8fdf2ebc0ef30f7baddddea1bf8c879a4315d17e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 38a3420fc1f50e6d90b69ed5e63352df28c039b0cedb438a68bad9257dd6c772
[INFO] running `"docker" "start" "-a" "38a3420fc1f50e6d90b69ed5e63352df28c039b0cedb438a68bad9257dd6c772"`
[INFO] [stderr] warning: path `/opt/crater/workdir/src/Calculator.rs` was erroneously implicitly accepted for binary `Calculator`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]    Compiling Calculator v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/Calculator.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |       if(flag == false)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/Calculator.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |       if(operator == '=')
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/Calculator.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 |    let mut operator: char = operator_string.chars()
[INFO] [stderr]    |        ----^^^^^^^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Calculator` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `calculator`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "38a3420fc1f50e6d90b69ed5e63352df28c039b0cedb438a68bad9257dd6c772"`
[INFO] running `"docker" "rm" "-f" "38a3420fc1f50e6d90b69ed5e63352df28c039b0cedb438a68bad9257dd6c772"`
[INFO] [stdout] 38a3420fc1f50e6d90b69ed5e63352df28c039b0cedb438a68bad9257dd6c772
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 152070b301431654fc6b0dd0952a7afe77928a0eccc995d4c3ede83b11fc3065
[INFO] running `"docker" "start" "-a" "152070b301431654fc6b0dd0952a7afe77928a0eccc995d4c3ede83b11fc3065"`
[INFO] [stderr] warning: path `/opt/crater/workdir/src/Calculator.rs` was erroneously implicitly accepted for binary `Calculator`,
[INFO] [stderr] please set bin.path in Cargo.toml
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Calculator-1b9c424da751ccec
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "152070b301431654fc6b0dd0952a7afe77928a0eccc995d4c3ede83b11fc3065"`
[INFO] running `"docker" "rm" "-f" "152070b301431654fc6b0dd0952a7afe77928a0eccc995d4c3ede83b11fc3065"`
[INFO] [stdout] 152070b301431654fc6b0dd0952a7afe77928a0eccc995d4c3ede83b11fc3065