Thanks! See https://blog.rust-lang.org/2023/09/19/Rust-1.72.1.html.
Could you maybe also adjust the tempdir check a bit? 13G wasn't enough, build.log states this: * Final size of build directory: 15581188 KiB ( 14.8 GiB) * Final size of installed tree: 650832 KiB (635.5 MiB) while the ebuild does check for 12288MiB, so 2,5G off in reality, it was barely enough with 16,5G available, 0,2G were not used emerge -pv =dev-lang/rust-1.71.1 [ebuild R ] dev-lang/rust-1.71.1:stable/1.71::gentoo USE="rustfmt (-big-endian) -clippy -debug -dist -doc (-llvm-libunwind) -lto (-miri) (-nightly) (-parallel-compiler) (-profiler) -rust-analyzer -rust-src (-system-bootstrap) -system-llvm -test -verify-sig -wasm" ABI_X86="(64) -32 (-x32)" CPU_FLAGS_X86="sse2" LLVM_TARGETS="AArch64 ARM (X86) -AMDGPU -AVR -BPF -Hexagon -Lanai -LoongArch -MSP430 -Mips -NVPTX -PowerPC -RISCV -Sparc -SystemZ -VE -WebAssembly -XCore" 0 KiB