0.5.8: function Mint.HTTP1.open/2 is undefined or private

[AntoineAugusti]

Mint 1.7 has been released 1 hour ago and it seems to cause serious problems.

Mix.install([
  {:req, "~> 0.5.8"}
])

Req.get!("https://example.com")

Gives

Resolving Hex dependencies...
Resolution completed in 0.662s
New:
  finch 0.19.0
  hpax 1.0.2
  jason 1.4.4
  mime 2.0.6
  mint 1.7.0
  nimble_options 1.1.1
  nimble_pool 1.1.0
  req 0.5.8
  telemetry 1.3.0
* Getting req (Hex package)
* Getting finch (Hex package)
* Getting jason (Hex package)
* Getting mime (Hex package)
* Getting mint (Hex package)
* Getting nimble_options (Hex package)
* Getting nimble_pool (Hex package)
* Getting telemetry (Hex package)
* Getting hpax (Hex package)
==> mime
Compiling 1 file (.ex)
Generated mime app
==> nimble_options
Compiling 3 files (.ex)
Generated nimble_options app
===> Analyzing applications...
===> Compiling telemetry
==> jason
Compiling 10 files (.ex)
Generated jason app
==> hpax
Compiling 4 files (.ex)
Generated hpax app
==> mint
Compiling 1 file (.erl)
Compiling 20 files (.ex)
Generated mint app
==> nimble_pool
Compiling 2 files (.ex)
Generated nimble_pool app
==> finch
Compiling 14 files (.ex)
Generated finch app
==> req
Compiling 17 files (.ex)
Generated req app
** (UndefinedFunctionError) function Mint.HTTP1.open/2 is undefined or private. Did you mean:

      * open?/1
      * open?/2

    (mint 1.7.0) Mint.HTTP1.open(%Mint.HTTP1{host: "example.com", port: 443, request: nil, streaming_request: nil, socket: {:sslsocket, {:gen_tcp, #Port<0.28>, :tls_connection, :undefined}, [#PID<0.969.0>, #PID<0.968.0>]}, transport: Mint.Core.Transport.SSL, mode: :passive, scheme_as_string: "https", case_sensitive_headers: false, skip_target_validation: false, requests: {[], []}, state: :open, buffer: "", proxy_headers: [], private: %{}, log: false}, :write)
    (finch 0.19.0) lib/finch/http1/pool.ex:283: Finch.HTTP1.Pool.transfer_if_open/3
    (finch 0.19.0) lib/finch/http1/pool.ex:70: anonymous fn/10 in Finch.HTTP1.Pool.request/6
    (nimble_pool 1.1.0) lib/nimble_pool.ex:462: NimblePool.checkout!/4
    (finch 0.19.0) lib/finch/http1/pool.ex:52: Finch.HTTP1.Pool.request/6
    (finch 0.19.0) lib/finch.ex:493: anonymous fn/4 in Finch.request/3
    (telemetry 1.3.0) /Users/antoineaugusti/Library/Caches/mix/installs/elixir-1.16.2-erts-13.2.2.7/b3829ba2f71be23dd7c3b174d3952d5f/deps/telemetry/src/telemetry.erl:324: :telemetry.span/3
    (req 0.5.8) lib/req/finch.ex:253: Req.Finch.run_finch_request/3

[AntoineAugusti]

See sneako/finch#298

[wojtekmach]

Thank you, please explicitly pin Mint in the meantime in your project:

{:mint, "~> 1.6.0"}

[AntoineAugusti]

elixir-mint/mint#462 and a Mint release should fix the issue