[INFO] updating cached repository burtgulash/GVint
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/burtgulash/GVint
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/burtgulash/GVint" "work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/burtgulash/GVint" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/burtgulash/GVint"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/burtgulash/GVint'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fe291bf6cbabb9b17a185b5f215dd10dd0f6a33d
[INFO] sha for GitHub repo burtgulash/GVint: fe291bf6cbabb9b17a185b5f215dd10dd0f6a33d
[INFO] validating manifest of burtgulash/GVint 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 burtgulash/GVint 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 burtgulash/GVint
[INFO] finished frobbing burtgulash/GVint
[INFO] frobbed toml for burtgulash/GVint written to work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint/Cargo.toml
[INFO] started frobbing burtgulash/GVint
[INFO] finished frobbing burtgulash/GVint
[INFO] frobbed toml for burtgulash/GVint written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/burtgulash/GVint/Cargo.toml
[INFO] crate burtgulash/GVint already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 burtgulash/GVint against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4e20bc4b8d6061c21667dd5bbf1a9c136b5f338050a8334e1bb47b9d2bc85add
[INFO] running `"docker" "start" "-a" "4e20bc4b8d6061c21667dd5bbf1a9c136b5f338050a8334e1bb47b9d2bc85add"`
[INFO] [stderr]    Compiling gvint v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `byte_size2`
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn byte_size2(mut x: usize) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "4e20bc4b8d6061c21667dd5bbf1a9c136b5f338050a8334e1bb47b9d2bc85add"`
[INFO] running `"docker" "rm" "-f" "4e20bc4b8d6061c21667dd5bbf1a9c136b5f338050a8334e1bb47b9d2bc85add"`
[INFO] [stdout] 4e20bc4b8d6061c21667dd5bbf1a9c136b5f338050a8334e1bb47b9d2bc85add
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7d12aac9ae300ef4db8e810dc3acd8e08b98a168615956f8672d3aad60ee0ed8
[INFO] running `"docker" "start" "-a" "7d12aac9ae300ef4db8e810dc3acd8e08b98a168615956f8672d3aad60ee0ed8"`
[INFO] [stderr]    Compiling gvint v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `byte_size2`
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn byte_size2(mut x: usize) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "7d12aac9ae300ef4db8e810dc3acd8e08b98a168615956f8672d3aad60ee0ed8"`
[INFO] running `"docker" "rm" "-f" "7d12aac9ae300ef4db8e810dc3acd8e08b98a168615956f8672d3aad60ee0ed8"`
[INFO] [stdout] 7d12aac9ae300ef4db8e810dc3acd8e08b98a168615956f8672d3aad60ee0ed8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/burtgulash/GVint:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 6f83ac3c377ca019248391cd357b31fbdb1b98d0cd6e2c61e2a699dd6915cf4a
[INFO] running `"docker" "start" "-a" "6f83ac3c377ca019248391cd357b31fbdb1b98d0cd6e2c61e2a699dd6915cf4a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/gvint-9a09ce26ba7ce95c
[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" "6f83ac3c377ca019248391cd357b31fbdb1b98d0cd6e2c61e2a699dd6915cf4a"`
[INFO] running `"docker" "rm" "-f" "6f83ac3c377ca019248391cd357b31fbdb1b98d0cd6e2c61e2a699dd6915cf4a"`
[INFO] [stdout] 6f83ac3c377ca019248391cd357b31fbdb1b98d0cd6e2c61e2a699dd6915cf4a