testcontainers / testcontainers/testcontainers-java

[Bug]: Starting with 1.20.2 we can no longer get the logs of a container that failed to start

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type/bug
Dominant language
Java
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Avg merge
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Merged PRs (30d)
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Description

Module

Core

Testcontainers version

1.20.2+

Using the latest Testcontainers version?

Yes

Host OS

Macos

Host Arch

ARM

Docker version
Client:
 Version:           27.5.1
 API version:       1.47
 Go version:        go1.22.11
 Git commit:        9f9e405
 Built:             Wed Jan 22 13:37:19 2025
 OS/Arch:           darwin/arm64
 Context:           desktop-linux

Server: Docker Desktop 4.38.0 (181591)
 Engine:
  Version:          27.5.1
  API version:      1.47 (minimum version 1.24)
  Go version:       go1.22.11
  Git commit:       4c9b3b0
  Built:            Wed Jan 22 13:41:25 2025
  OS/Arch:          linux/arm64
  Experimental:     false
 containerd:
  Version:          1.7.25
  GitCommit:        bcc810d6b9066471b0b6fa75f557a15a1cbf31bb
 runc:
  Version:          1.1.12
  GitCommit:        v1.1.12-0-g51d5e946
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0
What happened?

Starting with 1.20.2 we can no longer get the log output of a container that failed to start. The stop method is called automatically, and that clears the containerId.

Relevant log output

Additional Information

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in core/src/main/java/org/testcontainers/containers/GenericContainer.java at the stop method linked in the issue, and trace how containerId is cleared after a failed start. Check the Core container lifecycle tests for the relevant startup-failure path. Done means logs remain retrievable after a container fails to start, with a regression test covering that behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, java
Domain
testing
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
65/100

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