Ruby中Linux环境下zgrep命令执行失败问题求助

我在Ruby代码中需要从.gz文件里搜索行并处理，采用zgrep命令实现搜索逻辑。这段代码在Linux环境通过instant_eval执行时始终报错，错误信息为：undefined method 'flush' for ScanView::ReportScriptingHelper::ScanViewScript，但在instant_eval外部执行、Windows环境下均可正常运行。相关日志及代码片段如下：

错误日志 #

2022-09-19 15:24:/src/SVSHelpers/file_search.rb(20):INFO:{"scanid"=>"110718", "rawrev"=>"SC_FLD_IODB0", "srchpattern"=>".*pie_mcawrp.FatalErrDetected", "limit"=>"20"}
2022-09-19 15:24:/src/SVSHelpers/file_search.rb(23):INFO:zgrep -i -m20 ".*pie_mcawrp.FatalErrDetected" /proj/platform_scandump/scanview30/ASCII/ScanviewStg/110718.txt.gz
2022-09-19 15:24:/src/SVSHelpers/file_search.rb(45):ERROR:problem in signal retrieval command: zgrep -i -m20 ".*pie_mcawrp.FatalErrDetected" /proj/platform_scandump/scanview30/ASCII/ScanviewStg/110718.txt.gz, error : undefined method `flush' for ScanView::ReportScriptingHelper::ScanViewScript, searchedline :

代码片段 #

items["srchpattern"] = items["srchpattern"].gsub("?", ".*")
$logger.info("#{items}")
command = "zgrep -i -m" + items["limit"] + ' "' + items["srchpattern"] + '" ' + $ascii_file_path + '/' + items["scanid"] +'.txt.gz'
#command='zgrep -i -m20 ".*pie_mcawrp.FatalErrDetected" /proj/platform_scandump/scanview30/ASCII/ScanviewStg/110718.txt.gz'
$logger.info("#{command}")
ll = `#{command}`
$logger.info("found lines : #{ll}")
searchedlines  = ll.split("\n")
signals = []
for line in searchedlines do
    tokens = line.split(",")
    signals.push({
                                 "signalNameString": tokens[0],
                                 "signalHexValueString": tokens[1],
                                 "signalDecimalValue": tokens[1].to_i(16)
                             })
end
return JSON.dump({
        "statusmsg": "passed",
        "data": {
            "scanOrSystemIdString": items["scanid"],
            "rtlSignalDatApisList": signals
        }
    })

内容的提问来源于stack exchange，提问作者Mukesh Arya