When Cargo fails to install dependencies, no error is show from atom.

[brunoczim]

The diagnostics don't work when there is llvm-sys as dependency.
Cargo failed to install a dependency and atom-ide-rust did not show me any error.
My Cargo.toml:

[package]
name = "llvmtest"
version = "0.1.0"
authors = ["Bruno Corrêa Zimmermann <brunoczim@gmail.com>"]

[dependencies]
rustc-serialize = "0.3"
llvm-sys = "*"

My Cargo.lock:

[[package]]
name = "aho-corasick"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "gcc"
version = "0.3.54"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "lazy_static"
version = "0.2.11"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "lazy_static"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "libc"
version = "0.2.36"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "llvm-sys"
version = "50.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "llvmtest"
version = "0.1.0"
dependencies = [
 "llvm-sys 50.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "memchr"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "regex"
version = "0.2.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "aho-corasick 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex-syntax 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "thread_local 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "regex-syntax"
version = "0.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "rustc-serialize"
version = "0.3.24"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "semver"
version = "0.6.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "semver-parser"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "thread_local"
version = "0.3.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "unreachable"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "utf8-ranges"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "void"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"

[metadata]
"checksum aho-corasick 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d6531d44de723825aa81398a6415283229725a00fa30713812ab9323faa82fc4"
"checksum gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)" = "5e33ec290da0d127825013597dbdfc28bee4964690c7ce1166cbc2a7bd08b1bb"
"checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
"checksum lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c8f31047daa365f19be14b47c29df4f7c3b581832407daabe6ae77397619237d"
"checksum libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)" = "1e5d97d6708edaa407429faa671b942dc0f2727222fb6b6539bf1db936e4b121"
"checksum llvm-sys 50.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e988d82cf3f66de901b7ea6cca10234f375b2338cd7f40e86e6c97ccd639bc0"
"checksum memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "796fba70e76612589ed2ce7f45282f5af869e0fdd7cc6199fa1aa1f1d591ba9d"
"checksum regex 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "744554e01ccbd98fff8c457c3b092cd67af62a555a43bfe97ae8a0451f7799fa"
"checksum regex-syntax 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8e931c58b93d86f080c734bfd2bce7dd0079ae2331235818133c8be7f422e20e"
"checksum rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)" = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
"checksum semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a3186ec9e65071a2095434b1f5bb24838d4e8e130f584c790f6033c79943537"
"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
"checksum thread_local 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "279ef31c19ededf577bfd12dfae728040a21f635b06a24cd670ff510edd38963"
"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
"checksum utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "662fab6525a98beff2921d7f61a39e7d59e0b425ebc7d0d9e66d316e55124122"
"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"

My src/lib.rs:

pub should throw some error

My rustup show command:

Default host: x86_64-unknown-linux-gnu

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu
nightly-2017-11-01-x86_64-unknown-linux-gnu
nightly-2018-01-21-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu (default)

active toolchain
----------------

nightly-x86_64-unknown-linux-gnu (default)
rustc 1.25.0-nightly (ae920dcc9 2018-01-22)

My rustup component list shows:

cargo-x86_64-unknown-linux-gnu (default)
rust-analysis-x86_64-unknown-linux-gnu (installed)
rust-docs-x86_64-unknown-linux-gnu (default)
rust-src (installed)
rust-std-aarch64-apple-ios
rust-std-aarch64-linux-android
rust-std-aarch64-unknown-cloudabi
....

atom-ide-rust version: 0.11.0
Rls Toolchain version in package configuration: nightly-2018-01-21

[alexheretic]

Thanks for the detailed report!

Currently Rls gives us no feedback in the event of the build failing in this way, obviously not ideal.

There is a rls pr that aims to send a window/showMessage notification to the client (ide-rust) in these events. With that we should show an error notification.

'Fixing' the Cargo.toml file, for example commenting out the dependencies, already indicates to Rls to rebuild with cargo allowing the diagnostics start to work again - so Rls's window/showMessage for cargo errors is the missing piece here.

[brunoczim]

But it is not a big problem. The bad part is that it took me a while to realize dependencies could be failing.

[alexheretic]

Rls now sends a window/showMessage for build errors