Move fulfilling pending future outside the lock and ignore already co… #4034

Job	Run time
linux-compat (manylinux2014-x64)	16m 9s
linux-compat (manylinux1-x64)	16m 17s
linux-compat (manylinux1-x86)	17m 6s
linux-compat (al2-x64)	16m 28s
macos	15m 56s
linux-compat (manylinux2014-x86)	17m 31s
windows-app-verifier	22m 18s
linux-debug	16m 38s
windows-shared-libs	18m 36s
windows	17m 23s
linux-compiler-compat (clang-8)	18m 39s
linux-compiler-compat (clang-6)	17m 53s
linux-compiler-compat (clang-10)	18m 18s
linux-compiler-compat (clang-11)	17m 23s
downstream	16m 19s
linux-compiler-compat (clang-9)	17m 45s
linux-compiler-compat (clang-15)	17m 26s
linux-compiler-compat (gcc-4.8)	16m 26s
linux-compiler-compat (clang-17)	18m 35s
linux-compiler-compat (gcc-8)	16m 32s
linux-compiler-compat (gcc-6)	16m 10s
byo-crypto	2m 58s
linux-compiler-compat (gcc-5)	16m 55s
linux-compiler-compat (gcc-7)	15m 50s
linux-compiler-compat (gcc-13, --cmake-extra=-DCMAKE_EXE_LINKER_FLAGS="-lresolv")	18m 21s
linux-compiler-compat (gcc-11)	17m 47s
linux-shared-libs	16m 59s
clang-sanitizers (,address,undefined)	18m 13s
windows-vc17 (x64)	17m 32s
clang-sanitizers (,thread)	18m 33s
windows-vc17 (x86)	17m 4s
macos-x64	15m 20s
	9h 1m 20s

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