[INFO] updating cached repository lemonrock/sass-alt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lemonrock/sass-alt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lemonrock/sass-alt" "work/ex/beta-1.37-6/sources/1.36.0/gh/lemonrock/sass-alt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/lemonrock/sass-alt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lemonrock/sass-alt" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lemonrock/sass-alt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lemonrock/sass-alt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 493fa8ba2ecb87aa749653260c4bdee08b3c4ab5
[INFO] sha for GitHub repo lemonrock/sass-alt: 493fa8ba2ecb87aa749653260c4bdee08b3c4ab5
[INFO] validating manifest of lemonrock/sass-alt 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 lemonrock/sass-alt 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 lemonrock/sass-alt
[INFO] finished frobbing lemonrock/sass-alt
[INFO] frobbed toml for lemonrock/sass-alt written to work/ex/beta-1.37-6/sources/1.36.0/gh/lemonrock/sass-alt/Cargo.toml
[INFO] started frobbing lemonrock/sass-alt
[INFO] finished frobbing lemonrock/sass-alt
[INFO] frobbed toml for lemonrock/sass-alt written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lemonrock/sass-alt/Cargo.toml
[INFO] crate lemonrock/sass-alt 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 lemonrock/sass-alt against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/lemonrock/sass-alt:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 176bf28d7019e5341fa207517a5a84d048327bf4df348fa5434598b931a4c13a
[INFO] running `"docker" "start" "-a" "176bf28d7019e5341fa207517a5a84d048327bf4df348fa5434598b931a4c13a"`
[INFO] [stderr]    Compiling sass-sys v0.4.3
[INFO] [stderr] error: failed to run custom build command for `sass-sys v0.4.3`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/sass-sys-148efc4f8632ec67/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] fatal: Not a git repository (or any parent up to mount point /opt/crater/cargo-home)
[INFO] [stderr] Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
[INFO] [stderr] thread 'main' panicked at 'Build error:
[INFO] [stderr] STDERR:mkdir: cannot create directory 'lib': Read-only file system
[INFO] [stderr] make: *** [lib] Error 1
[INFO] [stderr] 
[INFO] [stderr] STDOUT:mkdir lib
[INFO] [stderr] Makefile:231: recipe for target 'lib' failed
[INFO] [stderr] ', /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sass-sys-0.4.3/build.rs:43:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5601f947d913 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x5601f947949b - std::sys_common::backtrace::_print::h49a82ae9552e35c7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x5601f947c726 - std::panicking::default_hook::{{closure}}::he20974adbefcc046
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]                                at src/libstd/panicking.rs:197
[INFO] [stderr]    3:     0x5601f947c4b9 - std::panicking::default_hook::he4af6af4ac7fef7b
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x5601f947cd7f - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x5601f947c901 - std::panicking::continue_panic_fmt::ha6d6ae144369025b
[INFO] [stderr]                                at src/libstd/panicking.rs:381
[INFO] [stderr]    6:     0x5601f947c84e - std::panicking::begin_panic_fmt::he54eae869ed71eb1
[INFO] [stderr]                                at src/libstd/panicking.rs:336
[INFO] [stderr]    7:     0x5601f9442c2c - build_script_build::compile::h6a8aa7cc5307d086
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sass-sys-0.4.3/build.rs:43
[INFO] [stderr]    8:     0x5601f94431a9 - build_script_build::main::hd3d1ac1b2a2e7f83
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sass-sys-0.4.3/build.rs:91
[INFO] [stderr]    9:     0x5601f94420cf - std::rt::lang_start::{{closure}}::hf30d641c49b2217f
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   10:     0x5601f947c7d2 - std::panicking::try::do_call::hc3d8373a0b215f51
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:293
[INFO] [stderr]   11:     0x5601f9483009 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   12:     0x5601f947d28c - std::rt::lang_start_internal::he5218c8b95d395f2
[INFO] [stderr]                                at src/libstd/panicking.rs:272
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   13:     0x5601f94420a8 - std::rt::lang_start::h527dfb3cbd25be3f
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x5601f9443219 - main
[INFO] [stderr]   15:     0x7fdb9f0322e0 - __libc_start_main
[INFO] [stderr]   16:     0x5601f9441409 - _start
[INFO] [stderr]   17:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "176bf28d7019e5341fa207517a5a84d048327bf4df348fa5434598b931a4c13a"`
[INFO] running `"docker" "rm" "-f" "176bf28d7019e5341fa207517a5a84d048327bf4df348fa5434598b931a4c13a"`
[INFO] [stdout] 176bf28d7019e5341fa207517a5a84d048327bf4df348fa5434598b931a4c13a