Add notes for triage meeting 2019-04-25

Author: wesleywiser

minutes/triage-meeting/2019-04-25.md

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+# 2019-04-25
+
+## Volunteers wanted
+
+- No issues discussed this week.
+
+## Backport decisions
+
+- "Temporarily accept [i|u][32|size] suffixes on a tuple index and warn" [#60186](https://github.com/rust-lang/rust/issues/60186)
+  - [Accepted](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202019-04-25.20.2354818/near/164176203)
+
+- "Revert "compile crates under test w/ -Zemit-stack-sizes" [#59911](https://github.com/rust-lang/rust/issues/59911)
+  - [Accepted](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202019-04-25.20.2354818/near/164176203)
+
+## Working group sync
+
+### [wg-rfc-2229](https://github.com/rust-lang/compiler-team/blob/master/working-groups/rfc-2229/README.md)
+
+- RFC 2229 is a proposal to change how closures capture variables.
+Instead of capturing the complete variable when a part of it is used (ie `foo.bar`), only the "path" will be captured by the closure.
+
+- This requires a large amount of refactoring in the compiler.
+
+- There is currently a PR open which implements part of this but it regresses compiler error messages in some situtations.
+
+- There's been ongoing discussion as to next steps and other refactorings some of which have issues with light mentoring steps available.
+
+- [Link to full discussion](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202019-04-25.20.2354818/near/164176279)
+
+### [wg-self-profile](https://github.com/rust-lang/compiler-team/blob/master/working-groups/self-profile/README.md)
+
+- wg-self-profile has been making progress toward the "minimum viable product" tracking issue [#58967](https://github.com/rust-lang/rust/issues/58967):
+  - A crate called measureme has been created which handles serializing and deserializing profiler events to a compact binary format.
+  - The crate has been integrated with the existing self-profile infrastructure in rustc.
+  - There are now summarization and flamegraph tools for processing the profiler data in the repo as well.
+
+- The next step is to work on integrating the summarization tool with perf.rlo.
+
+- [Link to full discussion](https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/weekly.20meeting.202019-04-25.20.2354818/near/164177123)