My Scala Steward app is breaking on a Mill repo

[nafg]

I'm using https://github.com/nafg/nafg-scala-steward (based on https://github.com/armanbilge/diy-steward) for some of my repos and for the last few weeks it's been failing. The error is:

  2024-11-19 04:16:07,625 INFO  ──────────── Steward nafg/scala-grist ────────────
  2024-11-19 04:16:07,625 INFO  Check cache of nafg/scala-grist
  2024-11-19 04:16:08,008 INFO  Clone nafg/scala-grist
  2024-11-19 04:16:08,280 INFO  Refresh cache of nafg/scala-grist
  2024-11-19 04:16:08,354 INFO  Get dependencies in . from Mill
  2024-11-19 04:16:24,430 ERROR Steward nafg/scala-grist failed
  org.scalasteward.core.buildtool.mill.parser$CirceParseError: Failed to decode Modules
      at org.scalasteward.core.buildtool.mill.parser$.$anonfun$parseModules$1(parser.scala:43)
      at cats.syntax.EitherOps$.leftMap$extension(either.scala:193)
      at org.scalasteward.core.buildtool.mill.parser$.parseModules(parser.scala:43)
      at org.scalasteward.core.buildtool.mill.MillAlg.$anonfun$getProjectDependencies$1(MillAlg.scala:85)
      at map @ org.scalasteward.core.buildtool.mill.MillAlg.$anonfun$getProjectDependencies$1(MillAlg.scala:84)
      at map @ org.scalasteward.core.buildtool.mill.MillAlg.$anonfun$getProjectDependencies$1(MillAlg.scala:84)
      at main$ @ org.scalasteward.core.Main$.main(Main.scala:23)
      at timeoutAndForget @ org.scalasteward.core.io.process$.$anonfun$slurp$3(process.scala:85)
      at adaptErr$extension @ org.scalasteward.core.update.artifact.ArtifactMigrationsLoader.decodeMigrations(ArtifactMigrationsLoader.scala:50)
      at delay @ org.scalasteward.core.io.process$.$anonfun$slurp$1(process.scala:63)
  Caused by: io.circe.ParsingFailure: expected whitespace or eof got '..' (line 95, column 1)
  2024-11-19 04:16:24,432 INFO  ──────────── Total time: Steward nafg/scala-grist: 16s 807ms ────────────

However if I try to simulate it locally, not only does the output not explain the error, there is no line 95:

❯ mill --no-server --disable-ticker --import "ivy:org.scala-steward::scala-steward-mill-plugin::0.18.0" show org.scalasteward.mill.plugin.StewardPlugin/extractDeps | cat -n
[build.mill] [info] compiling 1 Scala source to /home/naftoli/repositories/github.com/nafg/scala-grist/out/mill-build/compile.dest/classes ...
[build.mill] [info] done compiling
     1	{
     2	  "modules": [
     3	    {
     4	      "name": "core[3.4.2]",
     5	      "repositories": [
     6	        {
     7	          "url": "https://repo1.maven.org/maven2",
     8	          "type": "maven",
     9	          "auth": null,
    10	          "headers": null
    11	        }
    12	      ],
    13	      "dependencies": [
    14	        {
    15	          "groupId": "io.circe",
    16	          "artifactId": {
    17	            "name": "circe-parser",
    18	            "maybeCrossName": "circe-parser_3"
    19	          },
    20	          "version": "0.14.10"
    21	        },
    22	        {
    23	          "groupId": "io.circe",
    24	          "artifactId": {
    25	            "name": "circe-generic",
    26	            "maybeCrossName": "circe-generic_3"
    27	          },
    28	          "version": "0.14.10"
    29	        },
    30	        {
    31	          "groupId": "dev.zio",
    32	          "artifactId": {
    33	            "name": "zio-http",
    34	            "maybeCrossName": "zio-http_3"
    35	          },
    36	          "version": "3.0.1"
    37	        },
    38	        {
    39	          "groupId": "org.scala-lang",
    40	          "artifactId": {
    41	            "name": "scala3-library",
    42	            "maybeCrossName": "scala3-library_3"
    43	          },
    44	          "version": "3.4.2"
    45	        }
    46	      ]
    47	    },
    48	    {
    49	      "name": "core[2.13.14]",
    50	      "repositories": [
    51	        {
    52	          "url": "https://repo1.maven.org/maven2",
    53	          "type": "maven",
    54	          "auth": null,
    55	          "headers": null
    56	        }
    57	      ],
    58	      "dependencies": [
    59	        {
    60	          "groupId": "io.circe",
    61	          "artifactId": {
    62	            "name": "circe-parser",
    63	            "maybeCrossName": "circe-parser_2.13"
    64	          },
    65	          "version": "0.14.10"
    66	        },
    67	        {
    68	          "groupId": "io.circe",
    69	          "artifactId": {
    70	            "name": "circe-generic",
    71	            "maybeCrossName": "circe-generic_2.13"
    72	          },
    73	          "version": "0.14.10"
    74	        },
    75	        {
    76	          "groupId": "dev.zio",
    77	          "artifactId": {
    78	            "name": "zio-http",
    79	            "maybeCrossName": "zio-http_2.13"
    80	          },
    81	          "version": "3.0.1"
    82	        },
    83	        {
    84	          "groupId": "org.scala-lang",
    85	          "artifactId": {
    86	            "name": "scala-library",
    87	            "maybeCrossName": null
    88	          },
    89	          "version": "2.13.14"
    90	        }
    91	      ]
    92	    }
    93	  ]
    94	}

[nafg]

Also there's no .., except for the ... in the first line, which seems to be on stderr rather than stdout, and besides if it somehow was trying to parse it concatenated to stdout it should fail long before that.

[nafg]

It would be good if when parsing failed, it would print the whole output that failed to parse. That might help determine what's really happening.

Anyway is that error the reason the job fails with Error: ✕ Launching scala-steward failed?

[yoohaemin]

I'm getting the exact same failure with the same error message.