[WIP] Test FreeBSD failure

.cirrus.yml

@@ -1,18 +1,3 @@
-task:
-  name: stable x86_64-unknown-freebsd-11
-  freebsd_instance:
-    image: freebsd-11-3-stable-amd64-v20190801
-  setup_script:
-    - pkg install -y curl
-    - curl https://sh.rustup.rs -sSf --output rustup.sh
-    - sh rustup.sh -y
-    - . $HOME/.cargo/env
-    - rustup default stable
-  test_script:
-    - . $HOME/.cargo/env
-    - LIBC_CI=1 sh ci/run.sh x86_64-unknown-freebsd
-    - sh ci/run.sh x86_64-unknown-freebsd
-
 task:
   name: nightly x86_64-unknown-freebsd-12
   freebsd_instance:
@@ -25,5 +10,4 @@ task:
     - rustup default nightly
   test_script:
     - . $HOME/.cargo/env
-    - LIBC_CI=1 sh ci/run.sh x86_64-unknown-freebsd
-    - sh ci/run.sh x86_64-unknown-freebsd
+    - gdb -batch -ex "run build" -ex "bt" cargo 2>&1 

Cargo.toml

@@ -1,35 +1,8 @@
 [package]
-name = "libc"
-version = "0.2.64"
+name = "test_failure"
+version = "0.1.0"
 authors = ["The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
-readme = "README.md"
-repository = "https://github.com/rust-lang/libc"
-homepage = "https://github.com/rust-lang/libc"
-documentation = "http://doc.rust-lang.org/libc"
-keywords = ["libc", "ffi", "bindings", "operating", "system" ]
-categories = ["external-ffi-bindings", "no-std", "os"]
-build = "build.rs"
-exclude = ["/ci/*", "/azure-pipelines.yml"]
-description = """
-Raw FFI bindings to platform libraries like libc.
-"""
 
-[badges]
-travis-ci = { repository = "rust-lang/libc" }
-appveyor = { repository = "rust-lang/libc", project_name = "rust-lang-libs/libc" }
-
-[dependencies]
-rustc-std-workspace-core = { version = "1.0.0", optional = true }
-
-[features]
-default = ["std"]
-std = []
-align = []
-rustc-dep-of-std = ['align', 'rustc-std-workspace-core']
-extra_traits = []
-# use_std is deprecated, use `std` instead
-use_std = [ 'std' ]
-
-[workspace]
-members = ["libc-test"]
+[build-dependencies]
+autocfg = "0.1"