Found the following non-portable file paths:
  tok/src/rust/target/release/.fingerprint/crossbeam-utils-0eecae588eb52565/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/crossbeam-utils-0eecae588eb52565/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/crossbeam-utils-4cd39d7d9eddd4e1/build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/crossbeam-utils-4cd39d7d9eddd4e1/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/crossbeam-utils-4cd39d7d9eddd4e1/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/derive_builder_core-d513293c9ea904fc/dep-lib-derive_builder_core
  tok/src/rust/target/release/.fingerprint/derive_builder_core-d513293c9ea904fc/lib-derive_builder_core
  tok/src/rust/target/release/.fingerprint/derive_builder_core-d513293c9ea904fc/lib-derive_builder_core.json
  tok/src/rust/target/release/.fingerprint/derive_builder_macro-fea17505e2b7e753/dep-lib-derive_builder_macro
  tok/src/rust/target/release/.fingerprint/derive_builder_macro-fea17505e2b7e753/lib-derive_builder_macro
  tok/src/rust/target/release/.fingerprint/derive_builder_macro-fea17505e2b7e753/lib-derive_builder_macro.json
  tok/src/rust/target/release/.fingerprint/esaxx-rs-786e58892a3be59f/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/esaxx-rs-786e58892a3be59f/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/esaxx-rs-dedd74752d7e2c7e/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/esaxx-rs-dedd74752d7e2c7e/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/extendr-api-29dcc4fc71d036bb/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/extendr-api-29dcc4fc71d036bb/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/extendr-api-a7c46f83e542c0c5/build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/extendr-api-a7c46f83e542c0c5/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/extendr-api-a7c46f83e542c0c5/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/extendr-ffi-20728be3ccf6dcb5/build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/extendr-ffi-20728be3ccf6dcb5/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/extendr-ffi-20728be3ccf6dcb5/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/extendr-ffi-f305064e7db37da0/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/extendr-ffi-f305064e7db37da0/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/libc-b40c3a2491139a38/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-13b0dcdc896baac1/dep-lib-macro_rules_attribute
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-13b0dcdc896baac1/lib-macro_rules_attribute
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-13b0dcdc896baac1/lib-macro_rules_attribute.json
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-proc_macro-10ebee37844915db/dep-lib-macro_rules_attribute_proc_macro
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-proc_macro-10ebee37844915db/invoked.timestamp
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-proc_macro-10ebee37844915db/lib-macro_rules_attribute_proc_macro
  tok/src/rust/target/release/.fingerprint/macro_rules_attribute-proc_macro-10ebee37844915db/lib-macro_rules_attribute_proc_macro.json
  tok/src/rust/target/release/.fingerprint/onig_sys-06c82491195dd7a4/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/onig_sys-06c82491195dd7a4/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/onig_sys-b0ab761f1389e31e/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/onig_sys-b0ab761f1389e31e/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/paste-f683a7f63f76a765/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/portable-atomic-5361195abadb337b/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/portable-atomic-5361195abadb337b/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/portable-atomic-bf1487163738e2dc/build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/portable-atomic-bf1487163738e2dc/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/portable-atomic-bf1487163738e2dc/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/proc-macro2-87552c9c2f3ab065/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/proc-macro2-87552c9c2f3ab065/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/proc-macro2-d6751ecdfce7c625/build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/proc-macro2-d6751ecdfce7c625/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/proc-macro2-d6751ecdfce7c625/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/rayon-core-0c89fc8cdad5adf9/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/rayon-core-0c89fc8cdad5adf9/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/rayon-core-2a6d8aaf2e234181/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/rayon-core-2a6d8aaf2e234181/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/serde-5725c7b102796e5b/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/serde_json-04a60054139b6583/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/serde_json-04a60054139b6583/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/serde_json-81dec0ffb83fa7ae/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/serde_json-81dec0ffb83fa7ae/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/thiserror-a0ed71eef660d0b5/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/thiserror-a0ed71eef660d0b5/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/thiserror-faa495cc12110ef7/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/thiserror-faa495cc12110ef7/dep-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/unicode-normalization-alignments-1f9089e52a78cb49/dep-lib-unicode_normalization_alignments
  tok/src/rust/target/release/.fingerprint/unicode-normalization-alignments-1f9089e52a78cb49/invoked.timestamp
  tok/src/rust/target/release/.fingerprint/unicode-normalization-alignments-1f9089e52a78cb49/lib-unicode_normalization_alignments
  tok/src/rust/target/release/.fingerprint/unicode-normalization-alignments-1f9089e52a78cb49/lib-unicode_normalization_alignments.json
  tok/src/rust/target/release/.fingerprint/unicode-segmentation-b185c81b5dcd313a/dep-lib-unicode_segmentation
  tok/src/rust/target/release/.fingerprint/unicode-segmentation-b185c81b5dcd313a/lib-unicode_segmentation
  tok/src/rust/target/release/.fingerprint/unicode-segmentation-b185c81b5dcd313a/lib-unicode_segmentation.json
  tok/src/rust/target/release/.fingerprint/unicode_categories-3dcc430d98667533/dep-lib-unicode_categories
  tok/src/rust/target/release/.fingerprint/unicode_categories-3dcc430d98667533/lib-unicode_categories.json
  tok/src/rust/target/release/.fingerprint/zerocopy-20da468e281c256f/run-build-script-build-script-build
  tok/src/rust/target/release/.fingerprint/zerocopy-20da468e281c256f/run-build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/zerocopy-3dcc5d5744a539c3/build-script-build-script-build.json
  tok/src/rust/target/release/.fingerprint/zerocopy-3dcc5d5744a539c3/dep-build-script-build-script-build
  tok/src/rust/target/release/build/crossbeam-utils-4cd39d7d9eddd4e1/build_script_build-4cd39d7d9eddd4e1
  tok/src/rust/target/release/build/crossbeam-utils-4cd39d7d9eddd4e1/build_script_build-4cd39d7d9eddd4e1.d
  tok/src/rust/target/release/build/onig_sys-b0ab761f1389e31e/out/a445302c6d3dcb51-unicode_unfold_key.o
  tok/src/rust/target/release/build/portable-atomic-bf1487163738e2dc/build_script_build-bf1487163738e2dc
  tok/src/rust/target/release/build/portable-atomic-bf1487163738e2dc/build_script_build-bf1487163738e2dc.d
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_dense_crash-9486fb7c8a93b12c12a62166b43d31640c0208a9
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_dense_minimized-from-9486fb7c8a93b12c12a62166b43d31640c0208a9
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-0da59c0434eaf35e5a6b470fa9244bb79c72b000
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-18cfc246f2ddfc3dfc92b0c7893178c7cf65efa9
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-61fd8e3003bf9d99f6c1e5a8488727eefd234b98
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-a1b839d899ced76d5d7d0f78f9edb7a421505838
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-c383ae07ec5e191422eadc492117439011816570
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-d07703ceb94b10dcd9e4acb809f2051420449e2b
  tok/src/vendor/regex-automata/tests/fuzz/testdata/deserialize_sparse_crash-dbb8172d3984e7e7d03f4b5f8bb86ecd1460eff9

Tarballs are only required to store paths of up to 100 bytes and cannot
store those of more than 256 bytes, with restrictions including to 100
bytes for the final component.
See section ‘Package structure’ in the ‘Writing R Extensions’ manual.