workflows: try even harder not to build Rust

We can't have nice things.

.github/workflows/deb.yml

@@ -54,7 +54,7 @@ jobs:
 
             # poetry requires cryptography, but the latest version wants to be compiled by Rust, and this environment doesn't like Rust.
             # the same logic applies to the cryptography installation in the run section.
-            env CRYPTOGRAPHY_DONT_BUILD_RUST=1
+            export CRYPTOGRAPHY_DONT_BUILD_RUST=1
             pip install cryptography
             # using pip to install poetry, instead of shell script in Adam's work
             pip install poetry==1.5.1
@@ -74,7 +74,7 @@ jobs:
             . /opt/hackman/bin/activate
 
             # Poetry depends on Rust but our environment is hostile to Rust.
-            env CRYPTOGRAPHY_DONT_BUILD_RUST=1
+            export CRYPTOGRAPHY_DONT_BUILD_RUST=1
 
             # workaround for poetry installation stalling.  what's happening here: use pip to install the packages specified in poetry.
             # source: https://github.com/python-poetry/poetry/issues/7148#issuecomment-1398322105