X> git commit -m 'fix cobertura target failure'                                                                                                                             14:48:00
* Checking packages
* Checking headers
* Checking for banned imports
* Checking formatting of rust files
info: using existing install for '1.21.0-x86_64-apple-darwin'
info: override toolchain for '/Users/dmcclanahan/tools/pants' set to '1.21.0-x86_64-apple-darwin'

  1.21.0-x86_64-apple-darwin unchanged - rustc 1.21.0 (3b72af97e 2017-10-09)

[Waiting for /Users/dmcclanahan/.cache/pants/rust/cargo/bin/cargo fetch --manifest-path /Users/dmcclanahan/tools/pants/src/rust/engine/Cargo.toml (pid 25200) to complete]
An error occured while checking the formatting of rust files. Try running `/Users/dmcclanahan/.cache/pants/rust/cargo/bin/rustfmt --config-path=/Users/dmcclanahan/tools/pants/src/rust/engine/rustfmt.toml --write-mode=diff /Users/dmcclanahan/tools/pants/src/rust/engine/boxfuture/src/lib.rs /Users/dmcclanahan/tools/pants/src/rust/engine/process_executor/src/main.rs /Users/dmcclanahan/tools/pants/src/rust/engine/process_execution/src/local.rs /Users/dmcclanahan/tools/pants/src/rust/engine/process_execution/src/remote.rs /Users/dmcclanahan/tools/pants/src/rust/engine/process_execution/src/lib.rs /Users/dmcclanahan/tools/pants/src/rust/engine/process_execution/src/test_server.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/fs_util/src/main.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/src/lib.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/src/store.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/src/test_cas.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/src/snapshot.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/src/pool.rs /Users/dmcclanahan/tools/pants/src/rust/engine/fs/src/hash.rs /Users/dmcclanahan/tools/pants/src/rust/engine/testutil/src/lib.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/core.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/selectors.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/types.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/externs.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/cffi_build.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/graph.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/tasks.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/lib.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/handles.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/rule_graph.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/scheduler.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/nodes.rs /Users/dmcclanahan/tools/pants/src/rust/engine/src/context.rs /Users/dmcclanahan/tools/pants/src/rust/engine/process_execution/bazel_protos/src/verification.rs` to investigate. Its error is: