My Perl knowledge is limited so I hope this is not too trivial:

To get a program to run, I'm trying to install LWP::Protocol::https from CPAN. I've simply started sudo cpan and then invoked install LWP::Protocol::https. However, this gets stuck (seemingly) forever while running t/local/07_sslecho.t, even if I select no when it prompts me whether I want to run external tests and despite my Internet connection working fine (not sure if this specific test even communicates with some external server).

On my system uname -r returns 4.18.10-arch1-1-ARCH and I have gcc 8.2.1 installed. Right before the test runs some C compilation warnings are displayed, maybe this is due to some version conflict with a openssl? (I have OpenSSL 1.1.1  11 Sep 2018 installed). I've appended the warnings below.

cc -c  -I/usr/include -D_REENTRANT -D_GNU_SOURCE -fwrapv -fno-strict-a
+liasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEF
+ILE_SOURCE -D_FILE_OFFSET_BITS=64 -march=x86-64 -mtune=generic -O2 -p
+ipe -fstack-protector-strong -fno-plt   -DVERSION=\"1.85\" -DXS_VERSI
+ON=\"1.85\" -fPIC "-I/usr/lib/perl5/5.28/core_perl/CORE"   SSLeay.c
SSLeay.xs: In function ‘XS_Net__SSLeay_CTX_tlsv1_new’:
SSLeay.xs:1808:6: warning: ‘TLSv1_method’ is deprecated [-Wdeprecated-
+declarations]
      RETVAL = SSL_CTX_new (TLSv1_method());
      ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1852:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_method(void)) /* TL
+Sv1.0 */
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_CTX_tlsv1_1_new’:
SSLeay.xs:1817:6: warning: ‘TLSv1_1_method’ is deprecated [-Wdeprecate
+d-declarations]
      RETVAL = SSL_CTX_new (TLSv1_1_method());
      ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1858:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_method(void)) /* 
+TLSv1.1 */
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_CTX_tlsv1_2_new’:
SSLeay.xs:1828:6: warning: ‘TLSv1_2_method’ is deprecated [-Wdeprecate
+d-declarations]
      RETVAL = SSL_CTX_new (TLSv1_2_method());
      ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1864:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_method(void)) /* 
+TLSv1.2 */
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_RAND_pseudo_bytes’:
SSLeay.xs:2707:9: warning: ‘RAND_pseudo_bytes’ is deprecated [-Wdeprec
+ated-declarations]
         rc = RAND_pseudo_bytes(random, num);
         ^~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/rand.h:44:1: note: declared here
 DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num)
+)
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_X509_CRL_get_lastUpdate’:
SSLeay.c:6248:2: warning: ‘X509_CRL_get_lastUpdate’ is deprecated [-Wd
+eprecated-declarations]
  RETVAL = X509_CRL_get_lastUpdate(x);
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/x509.h:727:1: note: declared here
 DEPRECATEDIN_1_1_0(ASN1_TIME *X509_CRL_get_lastUpdate(X509_CRL *crl))
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_X509_CRL_get_nextUpdate’:
SSLeay.c:6267:2: warning: ‘X509_CRL_get_nextUpdate’ is deprecated [-Wd
+eprecated-declarations]
  RETVAL = X509_CRL_get_nextUpdate(x);
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/x509.h:728:1: note: declared here
 DEPRECATEDIN_1_1_0(ASN1_TIME *X509_CRL_get_nextUpdate(X509_CRL *crl))
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_X509_get_subjectAltNames’:
SSLeay.xs:3410:26: warning: ‘ASN1_STRING_data’ is deprecated [-Wdeprec
+ated-declarations]
                          PUSHs(sv_2mortal(newSVpv((const char*)ASN1_S
+TRING_data(subjAltNameDN->d.otherName->value->value.utf8string), ASN1
+_STRING_length(subjAltNameDN->d.otherName->value->value.utf8string)))
+);
                          ^~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/asn1.h:554:1: note: declared here
 DEPRECATEDIN_1_1_0(unsigned char *ASN1_STRING_data(ASN1_STRING *x))
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs:3419:26: warning: ‘ASN1_STRING_data’ is deprecated [-Wdeprec
+ated-declarations]
                          PUSHs(sv_2mortal(newSVpv((const char*)ASN1_S
+TRING_data(subjAltNameDN->d.ia5), ASN1_STRING_length(subjAltNameDN->d
+.ia5))));
                          ^~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/asn1.h:554:1: note: declared here
 DEPRECATEDIN_1_1_0(unsigned char *ASN1_STRING_data(ASN1_STRING *x))
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_P_X509_get_crl_distribution_poi
+nts’:
SSLeay.xs:3470:25: warning: ‘ASN1_STRING_data’ is deprecated [-Wdeprec
+ated-declarations]
                         XPUSHs(sv_2mortal(newSVpv((char*)ASN1_STRING_
+data(gn->d.ia5),ASN1_STRING_length(gn->d.ia5))));
                         ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/asn1.h:554:1: note: declared here
 DEPRECATEDIN_1_1_0(unsigned char *ASN1_STRING_data(ASN1_STRING *x))
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_P_X509_get_ocsp_uri’:
SSLeay.xs:3511:3: warning: ‘ASN1_STRING_data’ is deprecated [-Wdepreca
+ted-declarations]
   XPUSHs(sv_2mortal(newSVpv(
   ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/asn1.h:554:1: note: declared here
 DEPRECATEDIN_1_1_0(unsigned char *ASN1_STRING_data(ASN1_STRING *x))
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_P_ASN1_STRING_get’:
SSLeay.xs:3829:9: warning: ‘ASN1_STRING_data’ is deprecated [-Wdepreca
+ted-declarations]
         u8 = newSVpv((const char*)ASN1_STRING_data(s), ASN1_STRING_le
+ngth(s));
         ^~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/asn1.h:554:1: note: declared here
 DEPRECATEDIN_1_1_0(unsigned char *ASN1_STRING_data(ASN1_STRING *x))
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_method’:
SSLeay.c:9279:2: warning: ‘TLSv1_method’ is deprecated [-Wdeprecated-d
+eclarations]
  RETVAL = TLSv1_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1852:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_method(void)) /* TL
+Sv1.0 */
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_server_method’:
SSLeay.c:9296:2: warning: ‘TLSv1_server_method’ is deprecated [-Wdepre
+cated-declarations]
  RETVAL = TLSv1_server_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1853:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_server_method(void)
+)
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_client_method’:
SSLeay.c:9313:2: warning: ‘TLSv1_client_method’ is deprecated [-Wdepre
+cated-declarations]
  RETVAL = TLSv1_client_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1854:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_client_method(void)
+)
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_1_method’:
SSLeay.c:9333:2: warning: ‘TLSv1_1_method’ is deprecated [-Wdeprecated
+-declarations]
  RETVAL = TLSv1_1_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1858:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_method(void)) /* 
+TLSv1.1 */
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_1_server_method’:
SSLeay.c:9350:2: warning: ‘TLSv1_1_server_method’ is deprecated [-Wdep
+recated-declarations]
  RETVAL = TLSv1_1_server_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1859:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_server_method(voi
+d))
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_1_client_method’:
SSLeay.c:9367:2: warning: ‘TLSv1_1_client_method’ is deprecated [-Wdep
+recated-declarations]
  RETVAL = TLSv1_1_client_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1860:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_1_client_method(voi
+d))
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_2_method’:
SSLeay.c:9388:2: warning: ‘TLSv1_2_method’ is deprecated [-Wdeprecated
+-declarations]
  RETVAL = TLSv1_2_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1864:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_method(void)) /* 
+TLSv1.2 */
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_2_server_method’:
SSLeay.c:9405:2: warning: ‘TLSv1_2_server_method’ is deprecated [-Wdep
+recated-declarations]
  RETVAL = TLSv1_2_server_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1865:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_server_method(voi
+d))
 ^~~~~~~~~~~~~~~~~~
SSLeay.c: In function ‘XS_Net__SSLeay_TLSv1_2_client_method’:
SSLeay.c:9422:2: warning: ‘TLSv1_2_client_method’ is deprecated [-Wdep
+recated-declarations]
  RETVAL = TLSv1_2_client_method();
  ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/ssl.h:1866:1: note: declared here
 DEPRECATEDIN_1_1_0(__owur const SSL_METHOD *TLSv1_2_client_method(voi
+d))
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_RSA_generate_key’:
SSLeay.xs:5443:9: warning: ‘RSA_generate_key’ is deprecated [-Wdepreca
+ted-declarations]
         RETVAL = RSA_generate_key(bits, e, ssleay_RSA_generate_key_cb
+_invoke, cb);
         ^~~~~~
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/err.h:13,
                 from SSLeay.xs:163:
/usr/include/openssl/rsa.h:234:1: note: declared here
 DEPRECATEDIN_0_9_8(RSA *RSA_generate_key(int bits, unsigned long e, v
+oid
 ^~~~~~~~~~~~~~~~~~
SSLeay.xs: In function ‘XS_Net__SSLeay_OCSP_response_results’:
SSLeay.xs:6781:33: warning: passing argument 1 of ‘i2d_OCSP_CERTID’ di
+scards ‘const’ qualifier from pointer target type [-Wdiscarded-qualif
+iers]
       int len = i2d_OCSP_CERTID(OCSP_SINGLERESP_get0_id(sir),NULL);
                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/openssl/objects.h:15,
                 from /usr/include/openssl/evp.h:28,
                 from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/ssl.h:20,
                 from SSLeay.xs:167:
/usr/include/openssl/ocsp.h:333:1: note: expected ‘OCSP_CERTID *’ {aka
+ ‘struct ocsp_cert_id_st *’} but argument is of type ‘const OCSP_CERT
+ID *’ {aka ‘const struct ocsp_cert_id_st *’}
 DECLARE_ASN1_FUNCTIONS(OCSP_CERTID)
 ^
SSLeay.xs:6790:23: warning: passing argument 1 of ‘i2d_OCSP_CERTID’ di
+scards ‘const’ qualifier from pointer target type [-Wdiscarded-qualif
+iers]
       i2d_OCSP_CERTID(OCSP_SINGLERESP_get0_id(sir),&pi);
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/openssl/objects.h:15,
                 from /usr/include/openssl/evp.h:28,
                 from /usr/include/openssl/x509.h:18,
                 from /usr/include/openssl/ssl.h:20,
                 from SSLeay.xs:167:
/usr/include/openssl/ocsp.h:333:1: note: expected ‘OCSP_CERTID *’ {aka
+ ‘struct ocsp_cert_id_st *’} but argument is of type ‘const OCSP_CERT
+ID *’ {aka ‘const struct ocsp_cert_id_st *’}
 DECLARE_ASN1_FUNCTIONS(OCSP_CERTID)
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