subscriber: fix missing make_writer_for in BoxMakeWriter
#1695
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## Motivation In `tracing-subscriber` 0.3.x, `MakeWriter` filtering seems to have stopped working when using the `BoxMakeWriter` wrapper to erase the type of a `MakeWriter` implementation. It looks like what happened is that commit 6cc6c47, which backported the change to add a lifetime parameter to `MakeWriter` (#781), I accidentally clobbered the `make_writer_for` method on the inner `Boxed` type, so that it only has `make_writer`: 6cc6c47#diff-c5dc275b15a60c1a2d4694da3797f4247c4f2e1e0978fd210dd14452d6746283L737-L739 This meant that any filtering performed by the `MakeWriter` inside the box is now ignored. My bad! ## Solution This commit puts back the missing `make_writer_for` method. Whoops! Fixes #1694
davidbarsky
approved these changes
Oct 29, 2021
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Motivation
In
tracing-subscriber0.3.x,MakeWriterfiltering seems to havestopped working when using the
BoxMakeWriterwrapper to erase the typeof a
MakeWriterimplementation. It looks like what happened is thatcommit 6cc6c47, which backported the
change to add a lifetime parameter to
MakeWriter(#781), Iaccidentally clobbered the
make_writer_formethod on the innerBoxedtype, so that it only has
make_writer:6cc6c47#diff-c5dc275b15a60c1a2d4694da3797f4247c4f2e1e0978fd210dd14452d6746283L737-L739
This meant that any filtering performed by the
MakeWriterinside thebox is now ignored. My bad!
Solution
This commit puts back the missing
make_writer_formethod. Whoops!Fixes #1694