intermittent CI issues: can't write to output file (Input/output error) #36390

issue fanquake opened this issue on September 30, 2026

fanquake commented at 12:50 PM on September 30, 2026: member

https://github.com/bitcoin/bitcoin/actions/runs/36715991886/job/109889450673?pr=36272#step:9:1205:

libbitcoin_node.a && /opt/homebrew/bin/cmake -E touch lib/libbitcoin_node.a && :
fatal error: /Applications/Xcode_16.2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: can't write to output file (Input/output error)
/Applications/Xcode_16.2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar: internal ranlib command failed
ninja: build stopped: subcommand failed.

maflcko added the label Build system on Sep 30, 2026
maflcko added the label CI failed on Sep 30, 2026
maflcko added the label macOS on Sep 30, 2026

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macOS Build system CI failed