Try script never exits on long provider chains

[tkmcmaster]

Describe the bug

Try script never exits on long provider chains

Expected behavior

Try script should exit once all endpoints have run once (or the one specified by -i)

Config file

provider_chain.yaml

providers:
  a:
    range: {}
  b:
    response: {}
  c:
    response: {}
  d:
    response: {}
  e:
    response: {}
  f:
    response: {}

load_pattern:
  - linear:
      from: 100%
      to: 100%
      over: 5s

loggers:
  test:
    to: stderr

vars:
  port: "${PORT}"


endpoints:
  - method: POST
    url: http://localhost:${port}
    body: '{"a": ${a}}'
    provides:
      b:
        select: response.body.a
    on_demand: true

  - method: POST
    url: http://localhost:${port}
    body: '{"b": ${b}}'
    provides:
      c:
        select: response.body.b
    on_demand: true

  - method: POST
    url: http://localhost:${port}
    body: '{"c": ${c}}'
    provides:
      d:
        select: response.body.c
    on_demand: true

  - method: POST
    url: http://localhost:${port}
    body: '{"d": ${d}}'
    provides:
      e:
        select: response.body.d
    on_demand: true

  - method: POST
    url: http://localhost:${port}
    body: '{"e": ${e}}'
    provides:
      f:
        select: response.body.e
    on_demand: true

  - method: POST
    url: http://localhost:${port}
    body: '{"f": ${f}}'
    peak_load: 1hps
    logs:
      test:
        select: response.body.f

provider_loop.yaml

providers:
  a:
    range: {}
  b:
    response: {}
  c:
    response: {}
  d:
    response: {}

load_pattern:
  - linear:
      from: 100%
      to: 100%
      over: 5s

loggers:
  test:
    to: stderr

vars:
  port: "${PORT}"


endpoints:
  - method: POST
    url: http://localhost:${port}
    body: '{"a": ${a}}'
    peak_load: 1hps
    provides:
      b:
        select: response.body.a

  - method: POST
    url: http://localhost:${port}
    body: '{"b": ${b}}'
    peak_load: 5hps
    provides:
      b:
        select: b # Put it back on 'b' to reuse

  - method: POST
    url: http://localhost:${port}
    body: '{"b": ${b}}'
    peak_load: 1hps
    provides:
      c:
        select: response.body.b # take and put it on 'c'

  - method: POST
    url: http://localhost:${port}
    body: '{"c": ${c}}'
    peak_load: 5hps
    provides:
      c:
        select: c # Put it back on 'c' to reuse

  - method: POST
    url: http://localhost:${port}
    body: '{"c": ${c}}'
    peak_load: 1hps
    provides:
      d:
        select: response.body.c # take and put it on 'd'

  - method: POST
    url: http://localhost:${port}
    body: '{"d": ${d}}'
    peak_load: 1hps
    logs:
      test:
        select: response.body.d

Command to run

Enter below the full command used to execute Pewpew.

PORT=8084 test-server &

PORT=8084 pewpew try provider_chain.yaml
or
PORT=8084 pewpew try provider_chain.yaml -i _id=5

PORT=8084 pewpew try provider_loop.yaml
or
PORT=8084 pewpew try provider_loop.yaml -i _id=5

System info

• Operating System: "Ubuntu 20.04"
• Pewpew version: pewpew 0.5.12

Additional context

Checking old versions, it last worked in 0.5.7 and has been broken in 0.5.8 forward. It will run in pewpew run, but hangs on pewpew try

[tkmcmaster]

I've narrowed it down to be between 0.5.7 and 0.5.8 preview 3. Preview 1 and 2 are broken to the point you can't even run _id=1

v0.5.7...v0.5.8-preview3

preview1:
works: RUST_LOG=warn PORT=8090 pewpew58p1 try examples/provider_chain.yaml -i _id=0
hangs: RUST_LOG=warn PORT=8090 pewpew58p1 try examples/provider_chain.yaml -i _id=1

preview2:
works: RUST_LOG=warn PORT=8090 pewpew58p2 try examples/provider_chain.yaml -i _id=0
hangs: RUST_LOG=warn PORT=8090 pewpew58p2 try examples/provider_chain.yaml -i _id=1

preview3 and latest:
works: RUST_LOG=warn PORT=8090 pewpew58p3 try examples/provider_chain.yaml -i _id=1
hangs: RUST_LOG=warn PORT=8090 pewpew58p3 try examples/provider_chain.yaml -i _id=2

Also check:

• breaks _id=1: v0.5.7...v0.5.8-preview1
• fixes _id=1 but _id=2 broken: v0.5.8-preview2...v0.5.8-preview3