ci: Update bfs to 4.0

And fix diff-bfs.sh for the new test result format.

.github/workflows/compat.yml

@@ -92,7 +92,7 @@ jobs:
         with:
           repository: tavianator/bfs
           path: bfs
-          ref: "3.1.3"
+          ref: "4.0"
       - name: Install `rust` toolchain
         run: |
           ## Install `rust` toolchain

util/build-bfs.sh

@@ -12,16 +12,17 @@ fi
 cargo build --release
 FIND=$(readlink -f target/release/find)
 
-cd ..
-make -C bfs -j "$(nproc)" bin/tests/{mksock,xtouch} NOLIBS=y
+cd ../bfs
+./configure NOLIBS=y
+make -j "$(nproc)" bin/tests/{mksock,xtouch}
 
 # Run the GNU find compatibility tests by default
 if test "$#" -eq 0; then
     set -- --verbose=tests --gnu --sudo
 fi
 
-LOG_FILE=bfs/tests.log
-./bfs/tests/tests.sh --bfs="$FIND" "$@" | tee "$LOG_FILE" || :
+LOG_FILE=tests.log
+./tests/tests.sh --bfs="$FIND" "$@" 2>&1 | tee "$LOG_FILE" || :
 
 PASS=$(sed -En 's|^\[PASS] *([0-9]+) / .*|\1|p' "$LOG_FILE")
 SKIP=$(sed -En 's|^\[SKIP] *([0-9]+) / .*|\1|p' "$LOG_FILE")
@@ -49,4 +50,4 @@ jq -n \
    --arg pass "$PASS" \
    --arg skip "$SKIP" \
    --arg fail "$FAIL" \
-   '{($date): { sha: $sha, total: $total, pass: $pass, skip: $skip, fail: $fail, }}' > bfs-result.json
+   '{($date): { sha: $sha, total: $total, pass: $pass, skip: $skip, fail: $fail, }}' > ../bfs-result.json

util/diff-bfs.sh

@@ -6,7 +6,7 @@ export LC_COLLATE=C
 
 # Extract the failing test lines from log files
 failing_tests() {
-    sed -n 's/^\([[:print:]]\+\) failed\!/\1/p' "$1" | sort
+    sed -n 's/^\[FAIL\] //p' "$1" | sort
 }
 
 comm -3 <(failing_tests "$1") <(failing_tests "$2") | tr '\t' ',' | while IFS=, read old new; do