*: quick-error -> thiserror, fmt

[PsiACE]

Signed-off-by: Chojan Shang psiace@outlook.com

What have you changed? (mandatory)

• quick-error -> thiserror
• cargo fmt
• update travis ci config

What are the type of the changes? (mandatory)

• Engineering (engineering change which doesn't change any feature or fix any issue)

How has this PR been tested? (mandatory)

Test with travis ci , make build & make test.

Does this PR affect TiDB Lightning? (mandatory)

I don't think so.

[purelind]

/rebuild

[PsiACE]

so, what happened? this doesn't seem to be my problem.

[purelind]

so, what happened? this doesn't seem to be my problem.

It seems that build meet some error on new ci. I will try it later

[purelind]

/rebuild

[PsiACE]

Sorry, too many errors, I will fix these in the next commit

[purelind]

/test

[PsiACE]

Welcome to thiserror

Sorry, there are too many commits, please squash before merging.

[PsiACE]

ping @purelind cc @kennytm

[kennytm]

/test