cppserver: remove legacy conan v1 output.warn which breaks conan v2 with "unknown compilers"

[SpaceIm]

Specify library name and version: lib/1.0

Maintainer edits:

• cppcommon/*: correctly reflect that fmt is a transitive_libs=True dependency - including certain headers from cppcommon (as included in cppserver) cause the consumer to reference fmt symbols
• stop maintaining older versions of cppserver
• assume compiler.cppstd is defined and use check_min_cppstd()
• reflect transitive headers and libs for dependencies in cppserver
• remove test_v1_package

[conan-center-bot]

Conan v1 pipeline ❌

Failure in build 3 (9f8b2f73461a90b668b6afae9cd866c4babd0b63):

• cppserver/1.0.2.0:
  Didn't run or was cancelled before finishing

• cppserver/1.0.1.0:
  Didn't run or was cancelled before finishing

• cppserver/1.0.0.0:
  CI failed to create some packages (All logs)

  Logs for packageID 5c885ae169601398f6401aada1292aef7aee6d6b:

  [settings]
  arch=x86_64
  build_type=Debug
  compiler=gcc
  compiler.libcxx=libstdc++11
  compiler.version=10
  os=Linux
  [options]
  cppserver:shared=False
  

  [...]
  -- Generating done
  -- Build files have been written to: /home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/build/Debug
  cppserver/1.0.0.0: CMake command: cmake --build "/home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/build/Debug" '--' '-j3'
  
  ----Running------
  > cmake --build "/home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/build/Debug" '--' '-j3'
  -----------------
  Scanning dependencies of target cppserver
  [  3%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/service.cpp.o
  [  6%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/ssl_client.cpp.o
  [ 10%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/ssl_context.cpp.o
  [ 13%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/ssl_server.cpp.o
  [ 17%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/ssl_session.cpp.o
  [ 20%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/tcp_client.cpp.o
  [ 24%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/tcp_resolver.cpp.o
  [ 27%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/tcp_server.cpp.o
  [ 31%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/tcp_session.cpp.o
  [ 34%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/timer.cpp.o
  [ 37%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/udp_client.cpp.o
  [ 41%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/udp_resolver.cpp.o
  [ 44%] Building CXX object CMakeFiles/cppserver.dir/source/server/asio/udp_server.cpp.o
  [ 48%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/http_client.cpp.o
  [ 51%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/http_request.cpp.o
  [ 55%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/http_response.cpp.o
  [ 58%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/http_server.cpp.o
  [ 62%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/http_session.cpp.o
  [ 65%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/https_client.cpp.o
  [ 68%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/https_server.cpp.o
  [ 72%] Building CXX object CMakeFiles/cppserver.dir/source/server/http/https_session.cpp.o
  cppserver/1.0.0.0: 
  /home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/src/source/server/http/http_server.cpp: In lambda function:
  /home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/src/source/server/http/http_server.cpp:23:43: error: unable to find string literal operator ‘operator""_format’ with ‘const char [11]’, ‘long unsigned int’ arguments
     23 |         header.SetHeader("Cache-Control", "max-age={}"_format(timespan.seconds()));
        |                                           ^~~~~~~~~~~~~~~~~~~
  make[2]: *** [CMakeFiles/cppserver.dir/build.make:290: CMakeFiles/cppserver.dir/source/server/http/http_server.cpp.o] Error 1
  make[2]: *** Waiting for unfinished jobs....
  /home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/src/source/server/http/https_server.cpp: In lambda function:
  /home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/src/source/server/http/https_server.cpp:23:43: error: unable to find string literal operator ‘operator""_format’ with ‘const char [11]’, ‘long unsigned int’ arguments
     23 |         header.SetHeader("Cache-Control", "max-age={}"_format(timespan.seconds()));
        |                                           ^~~~~~~~~~~~~~~~~~~
  make[2]: *** [CMakeFiles/cppserver.dir/build.make:329: CMakeFiles/cppserver.dir/source/server/http/https_server.cpp.o] Error 1
  make[1]: *** [CMakeFiles/Makefile2:95: CMakeFiles/cppserver.dir/all] Error 2
  make: *** [Makefile:149: all] Error 2
  cppserver/1.0.0.0: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior
  cppserver/1.0.0.0: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior
  cppserver/1.0.0.0: ERROR: Package '5c885ae169601398f6401aada1292aef7aee6d6b' build failed
  cppserver/1.0.0.0: WARN: Build folder /home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/build/Debug
  ERROR: cppserver/1.0.0.0: Error in build() method, line 93
  	cmake.build()
  	ConanException: Error 2 while executing cmake --build "/home/conan/w/prod-v1/bsr/58021/bedbe/.conan/data/cppserver/1.0.0.0/_/_/build/5c885ae169601398f6401aada1292aef7aee6d6b/build/Debug" '--' '-j3'
  

---

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[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[jcar87]

Thanks!