Merge bitcoin#28862: lint: Report all lint errors instead of early exit

fa01f88 ci: Add missing COPY for ./test/lint/test_runner (MarcoFalke)
faff3e3 lint: Report all lint errors instead of early exit (MarcoFalke)

Pull request description:

  `all-lint.py` currently collects all failures. However, the `06_script.sh` does not, since July this year (bitcoin#28103 (comment)).

  Fix this by printing all failures before exiting.

  Can be tested by modifying (for example) two subtrees in the same commit and then running the linters.

ACKs for top commit:
  kevkevinpal:
    ACK [fa01f88](bitcoin@fa01f88)
  TheCharlatan:
    lgtm ACK fa01f88

Tree-SHA512: c0f3110f2907d87e29c755e3b77a67dfae1f8a25833fe6ef8f2f2c58cfecf1aa46f1a20881576b62252b04930140a9e416c78b4edba0780d3c4fa7aaebabba81

ci/lint/06_script.sh

@@ -23,16 +23,7 @@ else
 fi
 export COMMIT_RANGE
 
-# This only checks that the trees are pure subtrees, it is not doing a full
-# check with -r to not have to fetch all the remotes.
-test/lint/git-subtree-check.sh src/crypto/ctaes
-test/lint/git-subtree-check.sh src/secp256k1
-test/lint/git-subtree-check.sh src/minisketch
-test/lint/git-subtree-check.sh src/leveldb
-test/lint/git-subtree-check.sh src/crc32c
 RUST_BACKTRACE=1 "${LINT_RUNNER_PATH}/test_runner"
-test/lint/check-doc.py
-test/lint/all-lint.py
 
 if [ "$CIRRUS_REPO_FULL_NAME" = "bitcoin/bitcoin" ] && [ "$CIRRUS_PR" = "" ] ; then
     # Sanity check only the last few commits to get notified of missing sigs,

ci/lint_imagefile

@@ -12,6 +12,7 @@ ENV LC_ALL=C.UTF-8
 COPY ./.python-version /.python-version
 COPY ./ci/lint/container-entrypoint.sh /entrypoint.sh
 COPY ./ci/lint/04_install.sh /install.sh
+COPY ./test/lint/test_runner /test/lint/test_runner
 
 RUN /install.sh && \
   echo 'alias lint="./ci/lint/06_script.sh"' >> ~/.bashrc && \

test/lint/test_runner/src/main.rs

@@ -7,7 +7,9 @@ use std::path::PathBuf;
 use std::process::Command;
 use std::process::ExitCode;
 
-use String as LintError;
+type LintError = String;
+type LintResult = Result<(), LintError>;
+type LintFn = fn() -> LintResult;
 
 /// Return the git command
 fn git() -> Command {
@@ -31,7 +33,31 @@ fn get_git_root() -> String {
     check_output(git().args(["rev-parse", "--show-toplevel"])).unwrap()
 }
 
-fn lint_std_filesystem() -> Result<(), LintError> {
+fn lint_subtree() -> LintResult {
+    // This only checks that the trees are pure subtrees, it is not doing a full
+    // check with -r to not have to fetch all the remotes.
+    let mut good = true;
+    for subtree in [
+        "src/crypto/ctaes",
+        "src/secp256k1",
+        "src/minisketch",
+        "src/leveldb",
+        "src/crc32c",
+    ] {
+        good &= Command::new("test/lint/git-subtree-check.sh")
+            .arg(subtree)
+            .status()
+            .expect("command_error")
+            .success();
+    }
+    if good {
+        Ok(())
+    } else {
+        Err("".to_string())
+    }
+}
+
+fn lint_std_filesystem() -> LintResult {
     let found = git()
         .args([
             "grep",
@@ -55,8 +81,37 @@ fs:: namespace, which has unsafe filesystem functions marked as deleted.
     }
 }
 
+fn lint_doc() -> LintResult {
+    if Command::new("test/lint/check-doc.py")
+        .status()
+        .expect("command error")
+        .success()
+    {
+        Ok(())
+    } else {
+        Err("".to_string())
+    }
+}
+
+fn lint_all() -> LintResult {
+    if Command::new("test/lint/all-lint.py")
+        .status()
+        .expect("command error")
+        .success()
+    {
+        Ok(())
+    } else {
+        Err("".to_string())
+    }
+}
+
 fn main() -> ExitCode {
-    let test_list = [("std::filesystem check", lint_std_filesystem)];
+    let test_list: Vec<(&str, LintFn)> = vec![
+        ("subtree check", lint_subtree),
+        ("std::filesystem check", lint_std_filesystem),
+        ("-help=1 documentation check", lint_doc),
+        ("all-lint.py script", lint_all),
+    ];
 
     let git_root = PathBuf::from(get_git_root());