can't install rustc-docs component: `detected conflict: 'share/doc/rust/html/rustc'`

[matthiaskrgr]

info: downloading component 'rustc-docs'
info: installing component 'rustc-docs'
info: Defaulting to 500.0 MiB unpack ram
  9.9 MiB /   9.9 MiB (100 %)   2.9 MiB/s in  3s ETA:  0s
info: rolling back changes
error: failed to install component: 'rustc-docs-x86_64-unknown-linux-gnu', detected conflict: '"share/doc/rust/html/rustc"'

#75593 was supposed to fix this but it didn't work out I guess?

[Mark-Simulacrum]

Ah, right. https://doc.rust-lang.org/nightly/rustc/ (and the docs/html/rustc) directory do overlap. I guess we can call the directory rustc-docs or something? Seems rather annoying. I guess we could also put it at share/doc/rustc/html but that seems also not great.

[esavier]

hey, i am wondering are there any way to at least bypass this issue temporarily ?

[Mark-Simulacrum]

The rustc docs are available online https://doc.rust-lang.org/nightly/nightly-rustc/, and you can install the component locally with rustup-toolchain-install-master from crates.io, which doesn't complain as much about conflicts.

[x10an14]

I've got this issue too! So if anyone's got any hints/tips, it'd be much appreciated!!

[2020-09-16 19:50:50] 0 x10an14@x10-desktop:~/nav_github/rust-poc                                               (main=)
-> $ rustup show
Default host: x86_64-unknown-linux-gnu
rustup home:  /home/x10an14/.rustup

stable-x86_64-unknown-linux-gnu (default)
rustc 1.46.0 (04488afe3 2020-08-24)
[2020-09-16 19:52:21] 0 x10an14@x10-desktop:~/nav_github/rust-poc                                                                                                                                                                                             (main=)
-> $ la .git
total 52K
4.0K drwxr-xr-x 8 x10an14 x10an14 4.0K Sep 16 19:41 ./
4.0K drwxr-xr-x 5 x10an14 x10an14 4.0K Sep 16 19:44 ../
4.0K drwxr-xr-x 2 x10an14 x10an14 4.0K Sep 16 19:41 branches/
4.0K -rw-r--r-- 1 x10an14 x10an14  255 Sep 16 19:41 config
4.0K -rw-r--r-- 1 x10an14 x10an14   73 Sep 16 19:41 description
4.0K -rw-r--r-- 1 x10an14 x10an14   21 Sep 16 19:41 HEAD
4.0K drwxr-xr-x 2 x10an14 x10an14 4.0K Sep 16 19:41 hooks/
4.0K -rw-r--r-- 1 x10an14 x10an14  889 Sep 16 19:41 index
4.0K drwxr-xr-x 2 x10an14 x10an14 4.0K Sep 16 19:41 info/
4.0K drwxr-xr-x 3 x10an14 x10an14 4.0K Sep 16 19:41 logs/
4.0K drwxr-xr-x 4 x10an14 x10an14 4.0K Sep 16 19:41 objects/
4.0K -rw-r--r-- 1 x10an14 x10an14  112 Sep 16 19:41 packed-refs
4.0K drwxr-xr-x 5 x10an14 x10an14 4.0K Sep 16 19:41 refs/
[2020-09-16 19:52:27] 0 x10an14@x10-desktop:~/nav_github/rust-poc                                                                                                                                                                                             (main=)
-> $ rustup override set nightly
info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'
info: latest update on 2020-09-16, rust version 1.48.0-nightly (6af1bdda5 2020-09-15)
info: downloading component 'cargo'
info: downloading component 'clippy'
info: downloading component 'llvm-tools-preview'
info: downloading component 'miri'
info: downloading component 'rls'
info: downloading component 'rust-analysis'
info: downloading component 'rust-analyzer-preview'
info: downloading component 'rust-docs'
info: downloading component 'rust-src'
info: downloading component 'rust-std'
info: downloading component 'rustc'
info: downloading component 'rustc-dev'
info: downloading component 'rustc-docs'
info: downloading component 'rustfmt'
info: installing component 'cargo'
info: Defaulting to 500.0 MiB unpack ram
info: installing component 'clippy'
info: installing component 'llvm-tools-preview'
 20.0 MiB /  20.0 MiB (100 %)  14.7 MiB/s in  1s ETA:  0s
info: installing component 'miri'
info: installing component 'rls'
info: installing component 'rust-analysis'
info: installing component 'rust-analyzer-preview'
info: installing component 'rust-docs'
 13.1 MiB /  13.1 MiB (100 %)  13.1 MiB/s in  1s ETA:  0s
info: installing component 'rust-src'
info: installing component 'rust-std'
 21.2 MiB /  21.2 MiB (100 %)  12.6 MiB/s in  1s ETA:  0s
info: installing component 'rustc'
 55.2 MiB /  55.2 MiB (100 %)  14.1 MiB/s in  3s ETA:  0s
info: installing component 'rustc-dev'
 89.5 MiB /  89.5 MiB (100 %)  13.6 MiB/s in  6s ETA:  0s
info: installing component 'rustc-docs'
info: rolling back changes
error: failed to install component: 'rustc-docs-x86_64-unknown-linux-gnu', detected conflict: '"share/doc/rust/html/rustc"'
[2020-09-16 19:52:52] 1 x10an14@x10-desktop:~/nav_github/rust-poc                                                                                                                                                                                             (main=)
-> $ 

[Mark-Simulacrum]

Are you seeing that by default? @kinnison -- do we need to disable rustc-docs as a component or move it out of the complete profile perhaps?

[x10an14]

Are you seeing that by default?

@Mark-Simulacrum Could you elaborate what you mean by this? =)

I meant to show with my copy/pasted terminal that I've got (globally) stable default, and when trying to set it to nightly in that specific folder (~/nav_github/rust-poc), I get the error/error-message as shown.

[kinnison]

The complete profile is likely very rarely installable anyway, it's not great right now.

As for the conflicts you're seeing, We need to decide if a directory conflict is acceptable, file conflicts are not.

[Mark-Simulacrum]

To be clear, right now the files are also likely to conflict, so rustc-docs just isn't installable alongside rust-docs.

I had thought the amount of people this bug affected is "about zero" though, but I guess if users are hitting it just on rustup default nightly or similar, then that's a problem...

[kinnison]

If they've set their default profile to complete then they're going explicitly against our recommendations and chose to use a known-difficult/broken profile. It's not ideal but it shouldn't affect anyone who uses stable or sticks to minimal/default as a profile.

[x10an14]

If they've set their default profile to complete then they're going explicitly against our recommendations and chose to use a known-difficult/broken profile.

Fair enough, but I cannot remember having done that. Not saying that I haven't, I honestly cannot remember. How can one tell?

[kinnison]

How can one tell?

Apologies for the delay (timezone fun) -- You can run rustup show profile and if it's set to complete rather than one of minimal or default you can run rustup set profile default or similar.

[x10an14]

(...) you can run rustup set profile default(...)

Can confirm. Works for me now! Thanks @kinnison! =)

[2020-09-17 13:39:53] 0 x10an14@x10-desktop:~/nav_github/rust-poc
-> $ rustup show profile
complete
[2020-09-17 13:40:24] 0 x10an14@x10-desktop:~/nav_github/rust-poc
-> $ rustup set profile default
info: profile set to 'default'
[2020-09-17 13:40:34] 0 x10an14@x10-desktop:~/nav_github/rust-poc
-> $ rustup override set nightly
info: syncing channel updates for 'nightly-x86_64-unknown-linux-gnu'
info: latest update on 2020-09-17, rust version 1.48.0-nightly (285fc7d70 2020-09-16)
info: downloading component 'cargo'
info: downloading component 'clippy'
info: downloading component 'rust-docs'
info: downloading component 'rust-std'
info: downloading component 'rustc'
 55.2 MiB /  55.2 MiB (100 %)  27.1 MiB/s in  2s ETA:  0s
info: downloading component 'rustfmt'
info: installing component 'cargo'
info: Defaulting to 500.0 MiB unpack ram
info: installing component 'clippy'
info: installing component 'rust-docs'
info: installing component 'rust-std'
 21.2 MiB /  21.2 MiB (100 %)  12.7 MiB/s in  1s ETA:  0s
info: installing component 'rustc'
 55.2 MiB /  55.2 MiB (100 %)  14.1 MiB/s in  3s ETA:  0s
info: installing component 'rustfmt'
info: override toolchain for '/home/x10an14/Documents/nav/github/rust-poc' set to 'nightly-x86_64-unknown-linux-gnu'

  nightly-x86_64-unknown-linux-gnu installed - rustc 1.48.0-nightly (285fc7d70 2020-09-16)

[2020-09-17 13:42:30] 0 x10an14@x10-desktop:~/nav_github/rust-poc                                                                                                                                                                                             (main=)
-> $ cargo build
   Compiling typenum v1.12.0
(...)
   Compiling rocket_http v0.4.5
   Compiling rust-poc v0.1.0 (/home/x10an14/Documents/nav/github/rust-poc)
    Finished dev [unoptimized + debuginfo] target(s) in 19.96s
[2020-09-17 13:45:00] 0 x10an14@x10-desktop:~/nav_github/rust-poc                                                                                                                                                                                             (main=)
->