Unable to start pact-stub-server on Ubuntu

[stepan-leibo]

I've got the following exception on running pact on Ubuntu machine

RUST_BACKTRACE=1 ./exec/pact-stub-server -f pact.json 
14:02:45 [WARN] Unsupported specification version '3.0.0' found in the metadata in the pact file "\"PlatformTicketingClient-PlatformTicketingApp.json\"", will try load it as a V2 specification
thread 'main' panicked at 'index out of bounds: the len is 1 but the index is 1', /checkout/src/liballoc/vec.rs:1555:10
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:60
             at /checkout/src/libstd/panicking.rs:380
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:396
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:611
   5: std::panicking::begin_panic_new
             at /checkout/src/libstd/panicking.rs:553
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:521
   7: rust_begin_unwind
             at /checkout/src/libstd/panicking.rs:497
   8: core::panicking::panic_fmt
             at /checkout/src/libcore/panicking.rs:92
   9: core::panicking::panic_bounds_check
             at /checkout/src/libcore/panicking.rs:68
  10: pact_matching::models::matchingrules::matchers_from_json
  11: pact_matching::models::Request::from_json
  12: pact_matching::models::Interaction::from_json
  13: pact_matching::models::Pact::from_json
  14: pact_matching::models::Pact::read_pact
  15: <core::iter::FlatMap<I, U, F> as core::iter::iterator::Iterator>::next
  16: pact_stub_server::handle_command_args
  17: pact_stub_server::main
  18: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:98
  19: std::rt::lang_start
             at /checkout/src/libstd/panicking.rs:458
             at /checkout/src/libstd/panic.rs:361
             at /checkout/src/libstd/rt.rs:59
  20: __libc_start_main
  21: _start

It works perfectly fine on MacOS

[stepan-leibo]

Another stack trace

[WARN] Unsupported specification version '3.0.0' found in the metadata in the pact file "\"PlatformTicketingClient-PlatformTicketingApp.json\"", will try load it as a V2 specification
thread 'main' panicked at 'index out of bounds: the len is 1 but the index is 1', /checkout/src/liballoc/vec.rs:1555:10
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:60
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:397
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:611
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:572
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:522
   7: rust_begin_unwind
             at /checkout/src/libstd/panicking.rs:498
   8: core::panicking::panic_fmt
             at /checkout/src/libcore/panicking.rs:71
   9: core::panicking::panic_bounds_check
             at /checkout/src/libcore/panicking.rs:58
  10: <alloc::vec::Vec<T> as core::ops::index::Index<usize>>::index
             at /checkout/src/liballoc/vec.rs:1555
  11: pact_matching::models::matchingrules::MatchingRules::load_from_v2_map
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/matchingrules.rs:452
  12: pact_matching::models::matchingrules::matchers_from_json
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/matchingrules.rs:526
  13: pact_matching::models::Request::from_json
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/mod.rs:422
  14: pact_matching::models::Interaction::from_json
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/mod.rs:672
  15: pact_matching::models::parse_interactions::{{closure}}
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/mod.rs:779
  16: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &'a mut F>::call_once
             at /checkout/src/libcore/ops/function.rs:271
  17: <core::option::Option<T>>::map
             at /checkout/src/libcore/option.rs:398
  18: <core::iter::Map<I, F> as core::iter::iterator::Iterator>::next
             at /checkout/src/libcore/iter/mod.rs:1073
  19: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T, I>>::spec_extend
             at /checkout/src/liballoc/vec.rs:1825
  20: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T, I>>::from_iter
             at /checkout/src/liballoc/vec.rs:1808
  21: <alloc::vec::Vec<T> as core::iter::traits::FromIterator<T>>::from_iter
             at /checkout/src/liballoc/vec.rs:1695
  22: core::iter::iterator::Iterator::collect
             at /checkout/src/libcore/iter/iterator.rs:1298
  23: pact_matching::models::parse_interactions
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/mod.rs:778
  24: pact_matching::models::Pact::from_json
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/mod.rs:845
  25: pact_matching::models::Pact::read_pact
             at /home/stepan/.cargo/registry/src/github.com-1ecc6299db9ec823/pact_matching-0.3.0/src/models/mod.rs:933
  26: pact_stub_server::load_pacts::{{closure}}
             at src/main.rs:173
  27: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &'a mut F>::call_once
             at /checkout/src/libcore/ops/function.rs:271
  28: <core::option::Option<T>>::map
             at /checkout/src/libcore/option.rs:398
  29: <core::iter::FlatMap<I, U, F> as core::iter::iterator::Iterator>::next
             at /checkout/src/libcore/iter/mod.rs:1888
  30: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T, I>>::from_iter
             at /checkout/src/liballoc/vec.rs:1782
  31: <alloc::vec::Vec<T> as core::iter::traits::FromIterator<T>>::from_iter
             at /checkout/src/liballoc/vec.rs:1695
  32: core::iter::iterator::Iterator::collect
             at /checkout/src/libcore/iter/iterator.rs:1298
  33: pact_stub_server::load_pacts
             at src/main.rs:171
  34: pact_stub_server::handle_command_args
             at src/main.rs:353
  35: pact_stub_server::main
             at src/main.rs:97
  36: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:99
  37: std::rt::lang_start
             at /checkout/src/libstd/panicking.rs:459
             at /checkout/src/libstd/panic.rs:361
             at /checkout/src/libstd/rt.rs:61
  38: main
  39: __libc_start_main
  40: _start

[stones]

Could your meta data inside the pact be off? The error is saying that you have version 3 specified.

[stepan-leibo]

Thank you @stones I switched to version 2 of pact.

Also I had to build 2 different version of pact-stub-server executable - one for mac and the second for linux to make it work.