set up nalgebra benchmark

clean build times
- cargo check: 10.2s
- cargo build: 10.9s
- cargo build --release: 13.6s

leaf crate build times:
- check full: 4.9s
- debug full: 5.4s
- opt full: 7.6s

Author: lqd

collector/compile-benchmarks/README.md

@@ -41,6 +41,8 @@ They mostly consist of real-world crates.
 - **libc-0.2.124**: An interface to `libc`. Contains many declarations of
   types, constants, and functions, but relatively little normal code. Stresses
   the parser. A very widely-used crate.
+- **nalgebra-0.33.0**: A linear algebra library. It exercises the new trait solver
+  in different ways than the old solver.
 - **regex-1.5.5**: A regular expression parser. Used by many Rust programs.
 - **ripgrep-13.0.0**: A line-oriented search tool. A widely-used utility, and a
   binary crate.

collector/compile-benchmarks/REUSE.toml

@@ -155,6 +155,11 @@ path = "match-stress/**"
 SPDX-FileCopyrightText = "The Rust Project Developers (see https://thanks.rust-lang.org)"
 SPDX-License-Identifier = "MIT"
 
+[[annotations]]
+path = "nalgebra-0.33.0/**"
+SPDX-FileCopyrightText = "Sébastien Crozet"
+SPDX-License-Identifier = "Apache-2.0"
+
 [[annotations]]
 path = "piston-image/**"
 SPDX-FileCopyrightText = "piston contributors"

collector/compile-benchmarks/nalgebra-0.33.0/.gitignore

@@ -4,7 +4,6 @@ doc
 lib
 TODO
 target/
-Cargo.lock
 *.orig
 *.swo
 site/

collector/compile-benchmarks/nalgebra-0.33.0/0-println.patch

@@ -0,0 +1,12 @@
+diff --git a/src/base/matrix.rs b/src/base/matrix.rs
+index 6f358a84..6c4eb739 100644
+--- a/src/base/matrix.rs
++++ b/src/base/matrix.rs
+@@ -225,6 +225,7 @@ where
+     S: Default,
+ {
+     fn default() -> Self {
++        println!("testing");
+         Matrix {
+             data: Default::default(),
+             _phantoms: PhantomData,