[INFO] updating cached repository malramsay64/random_number_generators
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/malramsay64/random_number_generators
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/malramsay64/random_number_generators" "work/ex/beta-1.38-1/sources/1.37.0/gh/malramsay64/random_number_generators"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/malramsay64/random_number_generators'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/malramsay64/random_number_generators" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/malramsay64/random_number_generators"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/malramsay64/random_number_generators'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4310b8c9eebb26620eaecae656e427abb7e32aa6
[INFO] sha for GitHub repo malramsay64/random_number_generators: 4310b8c9eebb26620eaecae656e427abb7e32aa6
[INFO] validating manifest of malramsay64/random_number_generators 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 malramsay64/random_number_generators 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 malramsay64/random_number_generators
[INFO] finished frobbing malramsay64/random_number_generators
[INFO] frobbed toml for malramsay64/random_number_generators written to work/ex/beta-1.38-1/sources/1.37.0/gh/malramsay64/random_number_generators/Cargo.toml
[INFO] started frobbing malramsay64/random_number_generators
[INFO] finished frobbing malramsay64/random_number_generators
[INFO] frobbed toml for malramsay64/random_number_generators written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/malramsay64/random_number_generators/Cargo.toml
[INFO] crate malramsay64/random_number_generators 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing malramsay64/random_number_generators 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/gh/malramsay64/random_number_generators:/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] 3c1e5c39413811bc570432843eccd523c03127445a7af90b4e82530a3d82b251
[INFO] running `"docker" "start" "-a" "3c1e5c39413811bc570432843eccd523c03127445a7af90b4e82530a3d82b251"`
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_xoshiro v0.2.0
[INFO] [stderr]    Compiling sfmt v0.5.0
[INFO] [stderr]    Compiling random_number_generators v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.26s
[INFO] running `"docker" "inspect" "3c1e5c39413811bc570432843eccd523c03127445a7af90b4e82530a3d82b251"`
[INFO] running `"docker" "rm" "-f" "3c1e5c39413811bc570432843eccd523c03127445a7af90b4e82530a3d82b251"`
[INFO] [stdout] 3c1e5c39413811bc570432843eccd523c03127445a7af90b4e82530a3d82b251
[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/gh/malramsay64/random_number_generators:/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] c54e167357a24a22acca7591412994dd94f90a264b82142e9ee81ef519cb696a
[INFO] running `"docker" "start" "-a" "c54e167357a24a22acca7591412994dd94f90a264b82142e9ee81ef519cb696a"`
[INFO] [stderr]    Compiling random_number_generators v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `"docker" "inspect" "c54e167357a24a22acca7591412994dd94f90a264b82142e9ee81ef519cb696a"`
[INFO] running `"docker" "rm" "-f" "c54e167357a24a22acca7591412994dd94f90a264b82142e9ee81ef519cb696a"`
[INFO] [stdout] c54e167357a24a22acca7591412994dd94f90a264b82142e9ee81ef519cb696a
[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/gh/malramsay64/random_number_generators:/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] 5e783912448de491d41cd3ba51fbfc78c288c7281cfabcb805a08a4ea38f588a
[INFO] running `"docker" "start" "-a" "5e783912448de491d41cd3ba51fbfc78c288c7281cfabcb805a08a4ea38f588a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/random_number_generators-6e3e810f3e8e23b7
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr] 
[INFO] [stderr] thread 'tests::test_invariant' has overflowed its stack
[INFO] [stderr] fatal runtime error: stack overflow
[INFO] [stderr] error: process didn't exit successfully: `/opt/crater/target/debug/deps/random_number_generators-6e3e810f3e8e23b7` (signal: 6, SIGABRT: process abort signal)
[INFO] running `"docker" "inspect" "5e783912448de491d41cd3ba51fbfc78c288c7281cfabcb805a08a4ea38f588a"`
[INFO] running `"docker" "rm" "-f" "5e783912448de491d41cd3ba51fbfc78c288c7281cfabcb805a08a4ea38f588a"`
[INFO] [stdout] 5e783912448de491d41cd3ba51fbfc78c288c7281cfabcb805a08a4ea38f588a