(81/111) BUILDING cc v1.0.68 with features [parallel,jobserver]
> /var/tmp/portage/dev-lang/rust-1.54.0/work/mrustc-0.10/bin/mrustc rustc-1.54.0-src/vendor/cc/src/lib.rs -o output/cargo-build/libcc-1_0_68_H3.rlib --crate-name cc --crate-type rlib -C emit-depfile=output/cargo-build/libcc-1_0_68_H3.rlib.d --crate-tag 1_0_68_H3 --cfg debug_assertions -O -L output -L output/cargo-build --cfg feature="parallel" --cfg feature="jobserver" --edition 2018 --extern jobserver=output/cargo-build/libjobserver-0_1_22.rlib
> /var/tmp/portage/dev-lang/rust-1.54.0/work/mrustc-0.10/bin/mrustc rustc-1.54.0-src/vendor/libnghttp2-sys/build.rs --crate-name build --crate-type bin -o output/cargo-build/build_libnghttp2-sys-0_1_4_run -L output/cargo-build -L output --extern cc=output/cargo-build/libcc-1_0_68_H3.rlib
> /var/tmp/portage/dev-lang/rust-1.54.0/work/mrustc-0.10/output/cargo-build/build_libnghttp2-sys-0_1_4_run


error occurred: Is a directory (os error 21)


Process exited with non-zero exit status 1
FAILING COMMAND:  /var/tmp/portage/dev-lang/rust-1.54.0/work/mrustc-0.10/output/cargo-build/build_libnghttp2-sys-0_1_4_run
Calling /var/tmp/portage/dev-lang/rust-1.54.0/work/mrustc-0.10/output/cargo-build/build_libnghttp2-sys-0_1_4_run failed (see /var/tmp/portage/dev-lang/rust-1.54.0/work/mrustc-0.10/output/cargo-build/build_libnghttp2-sys-0_1_4.txt_failed.txt for stdout)
BUILD FAILED
make: *** [minicargo.mk:236: output/cargo] Error 1