Merge #562: Pin serde_json

6f54ed9 Pin serde_json (Tobin C. Harding)

Pull request description:

  Pin `serde_json` for 1.41 and 1.47 CI runs. Remove the pinning docs from the README and instead point devs to the CI script. (The docs are stale currently and are an unnecessary maintenance burden.)

ACKs for top commit:
  apoelstra:
    ACK 6f54ed9

Tree-SHA512: e53eb13a64050c2f3166ba6481cbb84767b0308739cb1cc55b1f38bbb170d051223c7ee8083819a68714d17361b7a22ae1db05d693b80fdc249b13f7488cd613

Author: apoelstra

README.md

@@ -44,14 +44,7 @@ This library should always compile with any combination of features (minus
 `no-std`) on **Rust 1.41.1** or **Rust 1.47** with `no-std`.
 
 Some dependencies do not play nicely with our MSRV, if you are running the tests
-you may need to pin as follows:
-
-```
-cargo update --package url --precise 2.2.2
-cargo update --package form_urlencoded --precise 1.0.1
-cargo update -p once_cell --precise 1.13.1
-cargo update -p bzip2 --precise 0.4.2
-```
+you may need to pin some dependencies. See `./contrib/test.sh` for current pinning.
 
 ## Contributing
 

contrib/test.sh

@@ -17,12 +17,14 @@ fi
 # Pin dependencies required to build with Rust 1.41.1
 if cargo --version | grep "1\.41\.0"; then
     cargo update -p once_cell --precise 1.13.1
+    cargo update -p serde_json --precise 1.0.99
     cargo update -p serde --precise 1.0.156
 fi
 
 # Pin dependencies required to build with Rust 1.47.0
 if cargo --version | grep "1\.47\.0"; then
     cargo update -p once_cell --precise 1.13.1
+    cargo update -p serde_json --precise 1.0.99
     cargo update -p serde --precise 1.0.156
 fi