/usr/src/rustc-1.24.1/debian/ is in rust-src 1.24.1+dfsg1+llvm-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/src/rustc-1.24.1/debian/patches/
/usr/src/rustc-1.24.1/debian/patches/d-add-soname.patch
/usr/src/rustc-1.24.1/debian/patches/d-armel-disable-kernel-helpers.patch
/usr/src/rustc-1.24.1/debian/patches/d-disable-cargo-vendor.patch
/usr/src/rustc-1.24.1/debian/patches/d-dont-download-stage0.patch
/usr/src/rustc-1.24.1/debian/patches/d-host-duplicates.patch
/usr/src/rustc-1.24.1/debian/patches/d-ignore-removed-submodules.patch
/usr/src/rustc-1.24.1/debian/patches/d-no-web-dependencies-in-doc.patch
/usr/src/rustc-1.24.1/debian/patches/d-prefer-dynamic.patch
/usr/src/rustc-1.24.1/debian/patches/d-rust-gdb-paths
/usr/src/rustc-1.24.1/debian/patches/d-rust-lldb-paths
/usr/src/rustc-1.24.1/debian/patches/gcc-4.8-aarch64-ice.diff
/usr/src/rustc-1.24.1/debian/patches/series
/usr/src/rustc-1.24.1/debian/patches/u-0001-Ignore-run-pass-sse2-when-using-system-LLVM.patch
/usr/src/rustc-1.24.1/debian/patches/u-0002-Use-a-range-to-identify-SIGSEGV-in-stack-guards.patch
/usr/src/rustc-1.24.1/debian/patches/u-fix-sparc64-cabi.patch
/usr/src/rustc-1.24.1/debian/patches/u-gperf-3.1.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-arm64.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-arm64_02.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-armhf_01.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-armhf_02.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-armhf_03.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-armhf_05.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-armhf_06.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-ppc64el.patch
/usr/src/rustc-1.24.1/debian/patches/u-ignoretest-ppc64el_02.patch
/usr/src/rustc-1.24.1/debian/patches/u-make-tests-work-without-rpath.patch
/usr/src/rustc-1.24.1/debian/patches/u-powerpcspe-support.patch
/usr/src/rustc-1.24.1/debian/patches/u-prefer-local-css.patch
/usr/src/rustc-1.24.1/debian/patches/u-reproducible-build.patch
/usr/src/rustc-1.24.1/debian/patches/u-reproducible-dl-stage0.patch
/usr/src/rustc-1.24.1/debian/patches/u-rust-pr46592-bootstrap-libdir.patch
/usr/src/rustc-1.24.1/debian/patches/u-rust-pr48362-libdir-relative.patch
/usr/src/rustc-1.24.1/debian/patches/u-sparc64-detection.patch