Slowest 20 targets

//src/test/shell/bazel:bazel_bootstrap_distfile_test on macOS (shard 4): PASSED in 1896.7s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Windows: PASSED in 1223.5s (log)
//src/test/shell/bazel/remote:remote_execution_http_test on Ubuntu 20.04 LTS: FLAKY in 1 out of 2 runs in 1150.3s (901.3s + 248.9s) (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on Ubuntu 20.04 LTS: PASSED in 1109.5s (log)
//src/test/shell/bazel/remote:remote_execution_http_test on Ubuntu 22.04 LTS: FLAKY in 1 out of 2 runs in 1107.2s (900.7s + 206.5s) (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on Ubuntu 20.04 LTS: PASSED in 1104.6s (log)
//src/test/shell/bazel:bazel_determinism_test on Ubuntu 20.04 LTS: PASSED in 1043.3s (log)
//src/test/shell/bazel/remote:remote_execution_http_test on CentOS 7: FLAKY in 1 out of 2 runs in 944.0s (900.5s + 43.5s) (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_test on CentOS 7: PASSED in 825.8s (log)
//src/test/shell/bazel:bazel_bootstrap_distfile_tar_test on CentOS 7: PASSED in 817.4s (log)
//src/test/shell/bazel:bazel_determinism_test on CentOS 7: PASSED in 737.6s (log)
//src/main/starlark/tests/builtins_bzl:cc_builtin_tests on macOS (shard 4): PASSED in 730.1s (log)
//src/test/shell/bazel:bazel_determinism_test on Ubuntu 22.04 LTS: PASSED in 658.7s (log)
//src/test/shell/bazel:bazel_java_test (shard 2/2) on Ubuntu 20.04 LTS: PASSED in 605.6s (log)
//src/test/shell/bazel:bazel_determinism_test on macOS arm64 (shard 3): PASSED in 595.3s (log)
//src/test/shell/integration:target_compatible_with_test on Ubuntu 20.04 LTS: PASSED in 590.2s (log)
//src/test/py/bazel:bazel_windows_cpp_test on Windows: PASSED in 585.8s (log)
//src/test/py/bazel:bazel_windows_test on Windows: FLAKY in 1 out of 2 runs in 572.9s (300.1s + 272.9s) (log)
//src/test/shell/bazel:bazel_java_test (shard 1/2) on Ubuntu 20.04 LTS: PASSED in 563.1s (log)
//src/test/py/bazel:runfiles_test on CentOS 7: PASSED in 563.0s (log)

Bazel

Use UncheckedIOException instead of rolling our own.

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