$ rustup --verbose update
verbose: read metadata version: '12'
verbose: updating existing install for 'stable-x86_64-apple-darwin'
verbose: toolchain directory: '/Users/Abhishek/.rustup/toolchains/stable-x86_64-apple-darwin'
info: syncing channel updates for 'stable-x86_64-apple-darwin'
verbose: creating temp file: /Users/Abhishek/.rustup/tmp/9jfebse0riq0m1ky_file
verbose: downloading file from: 'https://static.rust-lang.org/dist/channel-rust-stable.toml.sha256'
verbose: downloading with curl
verbose: deleted temp file: /Users/Abhishek/.rustup/tmp/9jfebse0riq0m1ky_file
verbose: toolchain is already up to date
verbose: updating existing install for 'beta-x86_64-apple-darwin'
verbose: toolchain directory: '/Users/Abhishek/.rustup/toolchains/beta-x86_64-apple-darwin'
info: syncing channel updates for 'beta-x86_64-apple-darwin'
verbose: creating temp file: /Users/Abhishek/.rustup/tmp/ghxt_sbarku60ywi_file
verbose: downloading file from: 'https://static.rust-lang.org/dist/channel-rust-beta.toml.sha256'
verbose: downloading with curl
verbose: deleted temp file: /Users/Abhishek/.rustup/tmp/ghxt_sbarku60ywi_file
verbose: toolchain is already up to date
verbose: updating existing install for 'nightly-x86_64-apple-darwin'
verbose: toolchain directory: '/Users/Abhishek/.rustup/toolchains/nightly-x86_64-apple-darwin'
info: syncing channel updates for 'nightly-x86_64-apple-darwin'
verbose: creating temp file: /Users/Abhishek/.rustup/tmp/23uik75so53bjiot_file
verbose: downloading file from: 'https://static.rust-lang.org/dist/channel-rust-nightly.toml.sha256'
verbose: downloading with curl
verbose: deleted temp file: /Users/Abhishek/.rustup/tmp/23uik75so53bjiot_file
verbose: creating temp file: /Users/Abhishek/.rustup/tmp/813y163basb82i7s_file.toml
verbose: downloading file from: 'https://static.rust-lang.org/dist/channel-rust-nightly.toml'
verbose: downloading with curl
verbose: checksum passed
verbose: deleted temp file: /Users/Abhishek/.rustup/tmp/813y163basb82i7s_file.toml
error: server sent a broken manifest: missing package for component rust-analysis-aarch64-apple-ios
info: checking for self-updates
stable-x86_64-apple-darwin unchanged - rustc 1.15.1 (021bd294c 2017-02-08)
beta-x86_64-apple-darwin unchanged - rustc 1.16.0-beta.2 (bc15d5281 2017-02-16)
nightly-x86_64-apple-darwin update failed - rustc 1.17.0-nightly (08230775a 2017-02-24)
