Subteam report: tools 2016-05-20

Highlights

An excellent blog post about rustup was published, detailing the vision for the tool and next steps.
Custom panic runtimes are now implemented which means that the compiler flag -C panic=abort can now be use to implement panics as aborts.
The new rust build system can now run crate tests which should bring it up to feature parity for tier 1 platforms.
Various Android targets have [seen][android1] [updates][android2] to enable more features and align them with the upstream definitions.
A new crate type, cdylib, is now available for production by the compiler which is optimized for producing a dynamic library with a C API. More information can be found in the relevant RFC.
Cargo will now retry failed network requests by default if they look like they're spurious failures.
Cargo will now emit status to stderr instead of stdout.

FCP PR #1567: Normalization for long error codes explanations RFC
PR #1133: Make Cargo aware of standard library dependencies
PR #1296: RFC: Add an alias attribute to #[link] and -l
PR #1459: Add a used attribute
PR #1489: Extended static linking
PR #1509: Add space-friendly arguments
PR #1573: Supporting code generators with source maps and multiple source directories
PR #1615: Let Cargo put data into platform-specific directories
Issue #635: Use benchmarks to set up a website tracking rust performance
Issue #648: separate rust-format or rustfmt tool that does the pretty-printing
Issue #816: Custom test frameworks
Issue #1061: Rust, Windows, and MSVC