[INFO] crate vt100 0.1.2 is already in cache
[INFO] extracting crate vt100 0.1.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/vt100/0.1.2
[INFO] extracting crate vt100 0.1.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vt100/0.1.2
[INFO] validating manifest of vt100-0.1.2 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 vt100-0.1.2 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 vt100-0.1.2
[INFO] finished frobbing vt100-0.1.2
[INFO] frobbed toml for vt100-0.1.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/vt100/0.1.2/Cargo.toml
[INFO] started frobbing vt100-0.1.2
[INFO] finished frobbing vt100-0.1.2
[INFO] frobbed toml for vt100-0.1.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vt100/0.1.2/Cargo.toml
[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 vt100-0.1.2 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/vt100/0.1.2:/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] 39c2afa5b852f3dc08772a8904f4e8a6850d7cc2610693f7de97fb9b55c3bd9f
[INFO] running `"docker" "start" "-a" "39c2afa5b852f3dc08772a8904f4e8a6850d7cc2610693f7de97fb9b55c3bd9f"`
[INFO] [stderr]    Compiling glib-sys v0.3.4
[INFO] [stderr]    Compiling vt100 v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'gcc::compile_library': crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stderr]   --> build.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     gcc::compile_library("libvt100wrappers.a", &["src/ffi.c"]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: failed to run custom build command for `vt100 v0.1.2 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/vt100-c3deede912d60232/build-script-build` (exit code: 2)
[INFO] [stderr] --- stdout
[INFO] [stderr] mkdir: cannot create directory 'build/': Read-only file system
[INFO] [stderr] make: *** [build/] Error 1
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "39c2afa5b852f3dc08772a8904f4e8a6850d7cc2610693f7de97fb9b55c3bd9f"`
[INFO] running `"docker" "rm" "-f" "39c2afa5b852f3dc08772a8904f4e8a6850d7cc2610693f7de97fb9b55c3bd9f"`
[INFO] [stdout] 39c2afa5b852f3dc08772a8904f4e8a6850d7cc2610693f7de97fb9b55c3bd9f