[INFO] updating cached repository dat2/rust_zeromq_examples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dat2/rust_zeromq_examples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dat2/rust_zeromq_examples" "work/ex/beta-1.37-6/sources/1.36.0/gh/dat2/rust_zeromq_examples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/dat2/rust_zeromq_examples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dat2/rust_zeromq_examples" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dat2/rust_zeromq_examples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dat2/rust_zeromq_examples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 34cf668a59a70f3d63bb6043bce4b5f990deb327
[INFO] sha for GitHub repo dat2/rust_zeromq_examples: 34cf668a59a70f3d63bb6043bce4b5f990deb327
[INFO] validating manifest of dat2/rust_zeromq_examples 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 dat2/rust_zeromq_examples 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 dat2/rust_zeromq_examples
[INFO] finished frobbing dat2/rust_zeromq_examples
[INFO] frobbed toml for dat2/rust_zeromq_examples written to work/ex/beta-1.37-6/sources/1.36.0/gh/dat2/rust_zeromq_examples/Cargo.toml
[INFO] started frobbing dat2/rust_zeromq_examples
[INFO] finished frobbing dat2/rust_zeromq_examples
[INFO] frobbed toml for dat2/rust_zeromq_examples written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dat2/rust_zeromq_examples/Cargo.toml
[INFO] crate dat2/rust_zeromq_examples 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/dat2/rust_zeromq_examples/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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]     Updating git repository `https://github.com/erickt/rust-zmq.git`
[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] [stderr]     Updating git repository `https://github.com/erickt/rust-zmq.git`
[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 dat2/rust_zeromq_examples 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/dat2/rust_zeromq_examples:/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] 622dd16cfec65d5d800d9c2b1ecb543ffe8516442edf392f93ac1986099429ea
[INFO] running `"docker" "start" "-a" "622dd16cfec65d5d800d9c2b1ecb543ffe8516442edf392f93ac1986099429ea"`
[INFO] [stderr]    Compiling zmq v0.9.2 (https://github.com/erickt/rust-zmq.git#3f5a779d)
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling zmq-sys v0.10.0 (https://github.com/erickt/rust-zmq.git#3f5a779d)
[INFO] [stderr] error: failed to run custom build command for `zmq-sys v0.10.0 (https://github.com/erickt/rust-zmq.git#3f5a779d)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/zmq-sys-58161c0935855e8b/build-script-main` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Unable to locate libzmq:
[INFO] [stderr] `"pkg-config" "--libs" "--cflags" "libzmq" "libzmq >= 4.1"` did not exit successfully: exit code: 1
[INFO] [stderr] --- stderr
[INFO] [stderr] Package libzmq was not found in the pkg-config search path.
[INFO] [stderr] Perhaps you should add the directory containing `libzmq.pc'
[INFO] [stderr] to the PKG_CONFIG_PATH environment variable
[INFO] [stderr] No package 'libzmq' found
[INFO] [stderr] Package libzmq was not found in the pkg-config search path.
[INFO] [stderr] Perhaps you should add the directory containing `libzmq.pc'
[INFO] [stderr] to the PKG_CONFIG_PATH environment variable
[INFO] [stderr] No package 'libzmq' found
[INFO] [stderr] ', /opt/crater/cargo-home/git/checkouts/rust-zmq-171537f0d9cec03c/3f5a779/zmq-sys/build/pkg_config.rs:26:17
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x562a4d061913 - 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:     0x562a4d05d4fb - std::sys_common::backtrace::_print::h49a82ae9552e35c7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:71
[INFO] [stderr]    2:     0x562a4d060786 - 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:     0x562a4d060519 - std::panicking::default_hook::he4af6af4ac7fef7b
[INFO] [stderr]                                at src/libstd/panicking.rs:211
[INFO] [stderr]    4:     0x562a4d060ddf - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f
[INFO] [stderr]                                at src/libstd/panicking.rs:474
[INFO] [stderr]    5:     0x562a4d060961 - std::panicking::continue_panic_fmt::ha6d6ae144369025b
[INFO] [stderr]                                at src/libstd/panicking.rs:381
[INFO] [stderr]    6:     0x562a4d0608ae - std::panicking::begin_panic_fmt::he54eae869ed71eb1
[INFO] [stderr]                                at src/libstd/panicking.rs:336
[INFO] [stderr]    7:     0x562a4cfba767 - build_script_main::find::configure::h883958281541c620
[INFO] [stderr]                                at /opt/crater/cargo-home/git/checkouts/rust-zmq-171537f0d9cec03c/3f5a779/zmq-sys/build/pkg_config.rs:26
[INFO] [stderr]    8:     0x562a4cfb9dd5 - build_script_main::main::h9340f6b3b21b5105
[INFO] [stderr]                                at /opt/crater/cargo-home/git/checkouts/rust-zmq-171537f0d9cec03c/3f5a779/zmq-sys/build/main.rs:6
[INFO] [stderr]    9:     0x562a4cfb9eaf - std::rt::lang_start::{{closure}}::h18e17c8f9caf2160
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   10:     0x562a4d060832 - 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:     0x562a4d067319 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:85
[INFO] [stderr]   12:     0x562a4d0612ec - 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:     0x562a4cfb9e88 - std::rt::lang_start::hff324d56115db85d
[INFO] [stderr]                                at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x562a4cfb9e09 - main
[INFO] [stderr]   15:     0x7efe6a40f2e0 - __libc_start_main
[INFO] [stderr]   16:     0x562a4cfb9cc9 - _start
[INFO] [stderr]   17:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "622dd16cfec65d5d800d9c2b1ecb543ffe8516442edf392f93ac1986099429ea"`
[INFO] running `"docker" "rm" "-f" "622dd16cfec65d5d800d9c2b1ecb543ffe8516442edf392f93ac1986099429ea"`
[INFO] [stdout] 622dd16cfec65d5d800d9c2b1ecb543ffe8516442edf392f93ac1986099429ea