language: rustaddons:  apt:    packages:    - libcurl4-openssl-dev    - libelf-dev    - libdw-devrust:  - nightly  - beta  - stablematrix:  allow_failures:    - rust: nightlybefore_script:- |  pip install 'travis-cargo<0.2' --user &&  export PATH=$HOME/.local/bin:$PATHscript:- |  travis-cargo build &&  travis-cargo test &&  travis-cargo bench &&  travis-cargo --only stable docafter_success:- travis-cargo --only stable doc-upload- travis-cargo coveralls --no-sudoenv:  global:  - TRAVIS_CARGO_NIGHTLY_FEATURE=nightly  - secure: 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