[INFO] crate klt-sys 0.1.0 is already in cache
[INFO] extracting crate klt-sys 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/klt-sys/0.1.0
[INFO] extracting crate klt-sys 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/klt-sys/0.1.0
[INFO] validating manifest of klt-sys-0.1.0 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 klt-sys-0.1.0 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 klt-sys-0.1.0
[INFO] finished frobbing klt-sys-0.1.0
[INFO] frobbed toml for klt-sys-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/klt-sys/0.1.0/Cargo.toml
[INFO] started frobbing klt-sys-0.1.0
[INFO] finished frobbing klt-sys-0.1.0
[INFO] frobbed toml for klt-sys-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/klt-sys/0.1.0/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] 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing klt-sys-0.1.0 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-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/klt-sys/0.1.0:/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] d7a0dec368e0c4cd293507897accaf5de43b2537eaa85c263ecd11aaff7b7358
[INFO] running `"docker" "start" "-a" "d7a0dec368e0c4cd293507897accaf5de43b2537eaa85c263ecd11aaff7b7358"`
[INFO] [stderr]    Compiling klt-sys v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `klt-sys v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/klt-sys-c9b8c4cc17633865/build-script-build` (exit code: 101)
[INFO] [stderr] --- stdout
[INFO] [stderr] cargo:rerun-if-changed=build/build.rs
[INFO] [stderr] cargo:rerun-if-changed=lib/klt
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'could not create klt build log: Read-only file system (os error 30)', build/build.rs:33:40
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55e5883311d3 - 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:     0x55e58832ce7b - std::sys_common::backtrace::_print::h49a82ae9552e35c7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x55e588330066 - 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:     0x55e58832fdf9 - std::panicking::default_hook::he4af6af4ac7fef7b
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x55e5883306bf - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x55e588330241 - std::panicking::continue_panic_fmt::ha6d6ae144369025b
[INFO] [stderr]                                at src/libstd/panicking.rs:381
[INFO] [stderr]    6:     0x55e58833018e - std::panicking::begin_panic_fmt::he54eae869ed71eb1
[INFO] [stderr]                                at src/libstd/panicking.rs:336
[INFO] [stderr]    7:     0x55e5883219eb - build_script_build::build_klt::{{closure}}::hc5379aadc33a04e9
[INFO] [stderr]                                at build/build.rs:33
[INFO] [stderr]    8:     0x55e5883236d7 - core::result::Result<T,E>::unwrap_or_else::h0a15eeac70e2c719
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/result.rs:766
[INFO] [stderr]    9:     0x55e588321593 - build_script_build::build_klt::h7512e2b6b2fb1acb
[INFO] [stderr]                                at build/build.rs:32
[INFO] [stderr]   10:     0x55e588321b78 - build_script_build::main::h648a4dca41a775d6
[INFO] [stderr]                                at build/build.rs:52
[INFO] [stderr]   11:     0x55e58831f96f - std::rt::lang_start::{{closure}}::ha13726378dd26e22
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   12:     0x55e588330112 - std::panicking::try::do_call::hc3d8373a0b215f51
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]                                at src/libstd/panicking.rs:293
[INFO] [stderr]   13:     0x55e5883365a9 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   14:     0x55e588330bcc - 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]   15:     0x55e58831f948 - std::rt::lang_start::hc4bdcdba0e67796f
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   16:     0x55e588321ba9 - main
[INFO] [stderr]   17:     0x7fd1ee5112e0 - __libc_start_main
[INFO] [stderr]   18:     0x55e58831b339 - _start
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "d7a0dec368e0c4cd293507897accaf5de43b2537eaa85c263ecd11aaff7b7358"`
[INFO] running `"docker" "rm" "-f" "d7a0dec368e0c4cd293507897accaf5de43b2537eaa85c263ecd11aaff7b7358"`
[INFO] [stdout] d7a0dec368e0c4cd293507897accaf5de43b2537eaa85c263ecd11aaff7b7358