[INFO] crate fac 0.5.1 is already in cache
[INFO] extracting crate fac 0.5.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/fac/0.5.1
[INFO] extracting crate fac 0.5.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/fac/0.5.1
[INFO] validating manifest of fac-0.5.1 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 fac-0.5.1 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 fac-0.5.1
[INFO] finished frobbing fac-0.5.1
[INFO] frobbed toml for fac-0.5.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/fac/0.5.1/Cargo.toml
[INFO] started frobbing fac-0.5.1
[INFO] finished frobbing fac-0.5.1
[INFO] frobbed toml for fac-0.5.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/fac/0.5.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bigbro v0.5.2
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing fac-0.5.1 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/fac/0.5.1:/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] e83f851635c8aef9b79725c659b1d34917132a8a026335628ff2d13a277ff6dd
[INFO] running `"docker" "start" "-a" "e83f851635c8aef9b79725c659b1d34917132a8a026335628ff2d13a277ff6dd"`
[INFO] [stderr]    Compiling vec_map v0.7.0
[INFO] [stderr]    Compiling metrohash v1.0.6
[INFO] [stderr]    Compiling seccomp-droundy-sys v0.1.2
[INFO] [stderr]    Compiling crude-profiler v0.1.7
[INFO] [stderr]    Compiling tinyset v0.3.5
[INFO] [stderr]    Compiling git-version-macro v0.3.1
[INFO] [stderr]    Compiling clap v2.23.3
[INFO] [stderr]    Compiling git-version v0.3.1
[INFO] [stderr]    Compiling seccomp-droundy v0.1.0
[INFO] [stderr]    Compiling bigbro v0.5.2
[INFO] [stderr]    Compiling fac v0.5.1 (/opt/crater/workdir)
[INFO] [stderr] error: git describe failed with status 128: fatal: Not a git repository (or any parent up to mount point /opt/crater/workdir)
[INFO] [stderr]  --> src/version.rs:2:28
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub const VERSION : &str = git_version::git_describe!("--always", "--dirty");
[INFO] [stderr]   |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `fac`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e83f851635c8aef9b79725c659b1d34917132a8a026335628ff2d13a277ff6dd"`
[INFO] running `"docker" "rm" "-f" "e83f851635c8aef9b79725c659b1d34917132a8a026335628ff2d13a277ff6dd"`
[INFO] [stdout] e83f851635c8aef9b79725c659b1d34917132a8a026335628ff2d13a277ff6dd