When racer trys to install when using VSCode I get a compilation error

[keithn]

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Compiling smallvec v0.6.10 error[E0554]: #![feature] may not be used on the stable release channel

[keithn]

not sure if this has anything to do with intstructions for nightly, but they fail also

[13:08:45.847] C:\rust\therustbook\sandpit> [master +4 ~0 -0 !] rustup toolchain add nightly info: syncing channel updates for 'nightly-x86_64-pc-windows-msvc' info: latest update on 2019-07-08, rust version 1.38.0-nightly (6e310f2ab 2019-07-07) info: downloading component 'rustc' 40.3 MiB / 40.3 MiB (100 %) 11.9 MiB/s in 3s ETA: 0s info: downloading component 'rust-std' 167.8 MiB / 167.8 MiB (100 %) 17.6 MiB/s in 12s ETA: 0s info: downloading component 'cargo' 3.0 MiB / 3.0 MiB (100 %) 1.8 MiB/s in 1s ETA: 0s info: downloading component 'rust-docs' 11.6 MiB / 11.6 MiB (100 %) 1.8 MiB/s in 2s ETA: 0s info: installing component 'rustc' 40.3 MiB / 40.3 MiB (100 %) 9.9 MiB/s in 3s ETA: 0s info: installing component 'rust-std' 167.8 MiB / 167.8 MiB (100 %) 20.6 MiB/s in 8s ETA: 0s info: installing component 'cargo' info: installing component 'rust-docs' 11.6 MiB / 11.6 MiB (100 %) 216.0 KiB/s in 18s ETA: 0s

nightly-x86_64-pc-windows-msvc installed - (error reading rustc version)

info: checking for self-updates [13:09:56.030] C:\rust\therustbook\sandpit> [master +4 ~0 -0 !] cargo +nightly install racer Updating crates.io index error: process didn't exit successfully: rustc -vV (exit code: 1) --- stderr error: Argument to option 'V' missing