Build: move to dune 2.0

3 jobs for 2.70.8 in 2 minutes and 33 seconds
latest
Status Job ID Name Coverage
  Build
passed #106798
build

00:01:13

 
  Test
passed #106840
test_opam_test

00:01:20

failed #106799
allowed to fail
test_opam_test

00:01:11