[INFO] updating cached repository daichirata/rust_ruby_extension
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/daichirata/rust_ruby_extension
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/daichirata/rust_ruby_extension" "work/ex/beta-1.38-1/sources/1.37.0/gh/daichirata/rust_ruby_extension"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/daichirata/rust_ruby_extension'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/daichirata/rust_ruby_extension" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/daichirata/rust_ruby_extension"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/daichirata/rust_ruby_extension'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d47ce7541f3b1512b587515abd295523b16897fd
[INFO] sha for GitHub repo daichirata/rust_ruby_extension: d47ce7541f3b1512b587515abd295523b16897fd
[INFO] validating manifest of daichirata/rust_ruby_extension 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 daichirata/rust_ruby_extension 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 daichirata/rust_ruby_extension
[INFO] finished frobbing daichirata/rust_ruby_extension
[INFO] frobbed toml for daichirata/rust_ruby_extension written to work/ex/beta-1.38-1/sources/1.37.0/gh/daichirata/rust_ruby_extension/Cargo.toml
[INFO] started frobbing daichirata/rust_ruby_extension
[INFO] finished frobbing daichirata/rust_ruby_extension
[INFO] frobbed toml for daichirata/rust_ruby_extension written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/daichirata/rust_ruby_extension/Cargo.toml
[INFO] crate daichirata/rust_ruby_extension 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/daichirata/rust_ruby_extension/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[INFO] the lockfile is outdated, regenerating it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 daichirata/rust_ruby_extension 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/daichirata/rust_ruby_extension:/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] 70fcef4d78d4424dce116702edcd7a10c9dab2912f14e58e4bf128350a1666d3
[INFO] running `"docker" "start" "-a" "70fcef4d78d4424dce116702edcd7a10c9dab2912f14e58e4bf128350a1666d3"`
[INFO] [stderr]    Compiling ruby v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "70fcef4d78d4424dce116702edcd7a10c9dab2912f14e58e4bf128350a1666d3"`
[INFO] running `"docker" "rm" "-f" "70fcef4d78d4424dce116702edcd7a10c9dab2912f14e58e4bf128350a1666d3"`
[INFO] [stdout] 70fcef4d78d4424dce116702edcd7a10c9dab2912f14e58e4bf128350a1666d3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/daichirata/rust_ruby_extension:/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] bb0d56dc08c326489aba213cd0a12a1f19890116cbe36488cf0261910f9c57f3
[INFO] running `"docker" "start" "-a" "bb0d56dc08c326489aba213cd0a12a1f19890116cbe36488cf0261910f9c57f3"`
[INFO] [stderr]    Compiling ruby v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "bb0d56dc08c326489aba213cd0a12a1f19890116cbe36488cf0261910f9c57f3"`
[INFO] running `"docker" "rm" "-f" "bb0d56dc08c326489aba213cd0a12a1f19890116cbe36488cf0261910f9c57f3"`
[INFO] [stdout] bb0d56dc08c326489aba213cd0a12a1f19890116cbe36488cf0261910f9c57f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/daichirata/rust_ruby_extension:/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] 2040aaf815ac6f57433be3a7815a21bde543f08214fdfdb4506ed42df0133e32
[INFO] running `"docker" "start" "-a" "2040aaf815ac6f57433be3a7815a21bde543f08214fdfdb4506ed42df0133e32"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust-785ff065d437035b
[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" "2040aaf815ac6f57433be3a7815a21bde543f08214fdfdb4506ed42df0133e32"`
[INFO] running `"docker" "rm" "-f" "2040aaf815ac6f57433be3a7815a21bde543f08214fdfdb4506ed42df0133e32"`
[INFO] [stdout] 2040aaf815ac6f57433be3a7815a21bde543f08214fdfdb4506ed42df0133e32