VSCode Extension: problem matching on compiler output with blank line - regex

Question

Im currently writing a vscode extension for a language used with Campbell Scientific dataloggers. Part of the extension I have made specifies a custom problem matcher for the compiler results.
The issue I am having is when I send the crbasic program (test.cr300) to the compiler using a task in tasks.json, I am unable to match the file name from the top of the compiler results.
Edit: This is due to the blank line in between the filename and the error messages. I currently am unable to find a way around this. Adding \n to the pattern doesn't work as expected even though it works on https://regex101.com/.
Example of returned text from the compiler:
test.cr300 -- Compile Failed!
line 12: Undeclared variable U1.
line 18: gmx600 not yet declared so cannot be aliased.
line 19: gmx600 not yet declared so cannot be aliased.
line 20: gmx600 not yet declared so cannot be aliased.
line 21: gmx600 not yet declared so cannot be aliased.
Pattern as specified in my package.json:
"pattern": [
{
"regexp": "^(.*\\.cr300).*\\n$",
"file": 1
},
{
"regexp": "^line\\s(\\d+):\\s(.+)$",
"line": 1,
"message": 2,
"loop": true
}
]
and here is my task from tasks.json when running the extension in debug.
{
"label": "CRBasic: Compiler",
"type": "shell",
"group": {
"kind": "build",
"isDefault": true
},
"options": {
"shell": {
"executable": "powershell.exe"
}
},
"command": "${config:CRBasic.Path.Compiler path}\\cr300comp.exe",
"args": [
"${file}"
],
"problemMatcher": [
"$crbasicCompiler"
]
}

Answer 1

You need to change the order of the regexes and add a loop attribute and change the group number for line and message
"pattern": [
{
"regexp": "^(.*\\.cr300) -- Compile Failed.*$",
"file": 1
},
{ "regexp": "^\\s*$" },
{
"regexp": "^line\\s(\\d+):\\s(.+)$",
"line": 1,
"message": 2,
"loop": true
}
]

Answer 2

After narrowing down the issue to a blank line, the below pattern now problem matches the compile output. In hindsight it seems obvious. Thanks to #rioV8 for the help.
"pattern": [
{
"regexp": "^(.*\\.cr300) -- Compile Failed.*$",
"file": 1
},
{
"regexp": "^.*$"
},
{
"regexp": "^line\\s(\\d+):\\s(.+)$",
"line": 1,
"message": 2,
"loop": true
}
]