The second release candidates for the 1.65.0 beta release are now available at: https://dl.bintray.com/boostorg/beta/1.65.0.beta.1/source/boost_1_65_0_beta1... https://dl.bintray.com/boostorg/beta/1.65.0.beta.1/source/boost_1_65_0_beta1... https://dl.bintray.com/boostorg/beta/1.65.0.beta.1/source/boost_1_65_0_beta1... https://dl.bintray.com/boostorg/beta/1.65.0.beta.1/source/boost_1_65_0_beta1... The SHA256 checksums are as follows: d54d29568c4e4933cbfe40a292b6cb84a7f68121e34f6a83f7d0f7c652b6b2d8 boost_1_65_0_beta1_rc2.7z 092676557513e992347d30dd0cd058fb8af2a401e5da4f4413f5b577852d726b boost_1_65_0_beta1_rc2.tar.bz2 31fa3c807e2205e18f7d5c74f77f540677f7b0937af1e37f595c137e1e87bf84 boost_1_65_0_beta1_rc2.tar.gz 83c8d8b76fa9591572226a1a49fd191d76db3011b52b907cbbc8d37d46213bd2 boost_1_65_0_beta1_rc2.zip This RC contains a single fix to the stacktrace library. As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. Thanks! -- The release managers