i install the dapp , and when dapp build it errors ,could anyone help me

[snowflowersnowflake]

first i met:
Error: Source file requires different compiler version (current compiler is 0.6.7+commit.b8d736ae.Linux.g++ - note that nightly builds are considered to be strictly less than the released version
--> src/test/flop.t.sol:18:1:
|
18 | pragma solidity ^0.6.12;

...

then I revise all the pragma to a fit range.

then met error:

testt@iZj6catsgyxin8nwhcin6wZ:~/dss$ dapp build

• dapp clean
• rm -rf out
• solc --overwrite ds-test/=lib/ds-test/src/ ds-test=lib/ds-test/src/index.sol ds-token/=lib/ds-token/src/ ds-token=lib/ds-token/src/index.sol ds-value/=lib/ds-value/src/ ds-value=lib/ds-value/src/index.sol ds-auth/=lib/ds-token/lib/ds-auth/src/ ds-auth=lib/ds-token/lib/ds-auth/src/index.sol ds-math/=lib/ds-token/lib/ds-math/src/ ds-math=lib/ds-token/lib/ds-math/src/index.sol ds-thing/=lib/ds-value/lib/ds-thing/src/ ds-thing=lib/ds-value/lib/ds-thing/src/index.sol ds-note/=lib/ds-value/lib/ds-thing/lib/ds-note/src/ ds-note=lib/ds-value/lib/ds-thing/lib/ds-note/src/index.sol --combined-json=abi,bin,bin-runtime,srcmap,srcmap-runtime,ast,metadata /=/ src/flap.sol src/vow.sol src/flop.sol src/dai.sol src/abaci.sol src/end.sol src/test/pot.t.sol src/test/end.t.sol src/test/jug.t.sol src/test/flap.t.sol src/test/vow.t.sol src/test/dog.t.sol src/test/flip.t.sol src/test/fork.t.sol src/test/flop.t.sol src/test/clip.t.sol src/test/dai.t.sol src/test/cure.t.sol src/test/abaci.t.sol src/test/vat.t.sol src/flip.sol src/cat.sol src/pot.sol src/vat.sol src/join.sol src/dog.sol src/clip.sol src/cure.sol src/jug.sol src/spot.sol
  Warning: Contract code size exceeds 24576 bytes (a limit introduced in Spurious Dragon). This contract may not be deployable on mainnet. Consider enabling the optimizer (with a low "runs" value!), turning off revert strings, or using libraries.
  --> src/test/clip.t.sol:243:1:
  Warning: Contract code size exceeds 24576 bytes (a limit introduced in Spurious Dragon). This contract may not be deployable on mainnet. Consider enabling the optimizer (with a low "runs" value!), turning off revert strings, or using libraries.
  --> src/test/clip.t.sol:243:1:
  |
  243 | contract ClipperTest is DSTest {
  | ^ (Relevant source part starts here and spans across multiple lines).

Warning: Contract code size exceeds 24576 bytes (a limit introduced in Spurious Dragon). This contract may not be deployable on mainnet. Consider enabling the optimizer (with a low "runs" value!), turning off revert strings, or using libraries.
--> src/test/cure.t.sol:25:1:
|
25 | contract CureTest is DSTest {
| ^ (Relevant source part starts here and spans across multiple lines).
...

I think it may be because of the optimizer (with a low "runs" value!) but I dont know where is the optimizer it said

[aUsABuisnessman]

I got a DWARF like that once it was only 44.0 Kibl