[INFO] crate quick-calc 0.3.0 is already in cache
[INFO] extracting crate quick-calc 0.3.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/quick-calc/0.3.0
[INFO] extracting crate quick-calc 0.3.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quick-calc/0.3.0
[INFO] validating manifest of quick-calc-0.3.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of quick-calc-0.3.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing quick-calc-0.3.0
[INFO] finished frobbing quick-calc-0.3.0
[INFO] frobbed toml for quick-calc-0.3.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/quick-calc/0.3.0/Cargo.toml
[INFO] started frobbing quick-calc-0.3.0
[INFO] finished frobbing quick-calc-0.3.0
[INFO] frobbed toml for quick-calc-0.3.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quick-calc/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing quick-calc-0.3.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quick-calc/0.3.0:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] b4efb3e449fac84e06e36f2b272bd376af5f74214aaaec84bde8da63091d2a02
[INFO] running `"docker" "start" "-a" "b4efb3e449fac84e06e36f2b272bd376af5f74214aaaec84bde8da63091d2a02"`
[INFO] [stderr]    Compiling quick-calc v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "b4efb3e449fac84e06e36f2b272bd376af5f74214aaaec84bde8da63091d2a02"`
[INFO] running `"docker" "rm" "-f" "b4efb3e449fac84e06e36f2b272bd376af5f74214aaaec84bde8da63091d2a02"`
[INFO] [stdout] b4efb3e449fac84e06e36f2b272bd376af5f74214aaaec84bde8da63091d2a02
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quick-calc/0.3.0:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 16d0a90e20aa3010a426c665885b8b7c1648aeaff42e9f047202764499a7ac65
[INFO] running `"docker" "start" "-a" "16d0a90e20aa3010a426c665885b8b7c1648aeaff42e9f047202764499a7ac65"`
[INFO] [stderr]    Compiling quick-calc v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:140:13
[INFO] [stderr]     |
[INFO] [stderr] 140 |         let mut db_dec: String;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         let mut db_hex: String;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let mut db_oct: String;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/operations.rs:143:13
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let mut db_bin: String;
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "16d0a90e20aa3010a426c665885b8b7c1648aeaff42e9f047202764499a7ac65"`
[INFO] running `"docker" "rm" "-f" "16d0a90e20aa3010a426c665885b8b7c1648aeaff42e9f047202764499a7ac65"`
[INFO] [stdout] 16d0a90e20aa3010a426c665885b8b7c1648aeaff42e9f047202764499a7ac65
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quick-calc/0.3.0:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 2bcb3b54fd40a44456cf2a5361b34b2955d13d6a22ab4987535160920acd3082
[INFO] running `"docker" "start" "-a" "2bcb3b54fd40a44456cf2a5361b34b2955d13d6a22ab4987535160920acd3082"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/quick_calc-3a570bd3e76c9a18
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test operations::tests::test_calculate_char_length ... ok
[INFO] [stdout] test operations::tests::test_swap ... ok
[INFO] [stdout] test operations::tests::test_get_char_length ... ok
[INFO] [stdout] test operations::tests::test_strip_prefix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/qcal-b0ee943dbd90cf10
[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] [stderr]    Doc-tests quick-calc
[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" "2bcb3b54fd40a44456cf2a5361b34b2955d13d6a22ab4987535160920acd3082"`
[INFO] running `"docker" "rm" "-f" "2bcb3b54fd40a44456cf2a5361b34b2955d13d6a22ab4987535160920acd3082"`
[INFO] [stdout] 2bcb3b54fd40a44456cf2a5361b34b2955d13d6a22ab4987535160920acd3082