I’m guessing that the machine can’t execute this file.
travis@7381f9139f7b:~$ curl -sSfLO https://github.com/RT-Thread/toolchains-ci/releases/download/v1.1/mips-2016.05-7-mips-sde-elf-i686-pc-linux-gnu.tar.bz2
travis@7381f9139f7b:~$ tar xf mips-2016.05-7-mips-sde-elf-i686-pc-linux-gnu.tar.bz2
travis@7381f9139f7b:~$ file mips-2016.05/bin/mips-sde-elf-gcc
mips-2016.05/bin/mips-sde-elf-gcc: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux 2.6.16, stripped
travis@7381f9139f7b:~$ mips-2016.05/bin/mips-sde-elf-gcc --version
-su: mips-2016.05/bin/mips-sde-elf-gcc: No such file or directory
travis@7381f9139f7b:~$ ldd mips-2016.05/bin/mips-sde-elf-gcc
not a dynamic executable
file
reports that the interpreter is /lib/ld-linux.so.2
, which is not found on the VM.