Crater runs for Rust 1.38.0 #63628

pietroalbini · 2019-08-16T07:12:08Z

cc @rust-lang/release

pietroalbini · 2019-08-16T07:12:56Z

@craterbot run name=beta-1.38-1 start=1.37.0 end=beta-2019-08-13 mode=build-and-test cap-lints=warn p=10

craterbot · 2019-08-16T07:12:58Z

👌 Experiment beta-1.38-1 created and queued.
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

pietroalbini · 2019-08-16T07:13:40Z

@craterbot run name=beta-1.38-rustdoc-1 start=1.37.0 end=beta-2019-08-13 mode=rustdoc cap-lints=warn p=5

craterbot · 2019-08-16T07:13:42Z

👌 Experiment beta-1.38-rustdoc-1 created and queued.
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

craterbot · 2019-08-17T20:55:59Z

🚧 Experiment beta-1.38-1 is now running on agent aws-1.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

Mark-Simulacrum · 2019-08-18T00:00:19Z

@craterbot run name=beta-1.38-rustdoc-1 p=0

Downgrading rustdoc crater run priority as it usually doesn't catch anything too severe and we have a long Crater queue.

craterbot · 2019-08-18T00:00:21Z

🚨 Error: missing start toolchain

🆘 If you have any trouble with Crater please ping @rust-lang/infra!
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Mark-Simulacrum · 2019-08-18T00:00:48Z

@craterbot name=beta-1.38-rustdoc-1 p=0

craterbot · 2019-08-18T00:00:50Z

📝 Configuration of the beta-1.38-rustdoc-1 experiment changed.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

craterbot · 2019-08-24T20:13:46Z

🎉 Experiment beta-1.38-1 is completed!
📊 616 regressed and 26 fixed (70078 total)
📰 Open the full report.

⚠️ If you notice any spurious failure please add them to the blacklist!
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

Centril · 2019-08-24T20:54:18Z

cc @petrochenkov heads up, there are a bunch of macro / derive related regressions errors here, e.g.:

petrochenkov · 2019-08-24T22:04:50Z

there are a bunch of macro / derive related regressions errors

Yeah, there were a lot of changes in this area.

Here are all the errors:

// These ones interest me (UPD: All are triaged below).
742 use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
 62 proc-macro derive panicked
 36 failed to resolve: could not find `rustc_serialize` in `{{root}}`
 18 cannot find macro `trace!` in this scope
 12 lifetime name `'s` declared twice in the same scope
 10 cannot find macro `flatdata_intersperse!` in this scope
  5 attributes starting with `rustc` are reserved for use by the `rustc` compiler
  2 lifetime name `'input` declared twice in the same scope
  2 custom attribute panicked
  2 cannot determine resolution for the derive macro `Debug`
  1 proc macro panicked
  1 failed to resolve: use of undeclared type or module `SliceConcatExt`
  1 expected open delimiter
  1 expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `is`
  1 expected module, found unresolved item `crate::mod`

// These ones do not interest me.
191 cannot use `state` because it was mutably borrowed
 94 cannot assign to `self.input.cached_token` because it is borrowed
 38 cannot borrow `v` as immutable because it is also borrowed as mutable
  4 cannot move out of `_` because it is borrowed
  2 cannot borrow `*value` as immutable because it is also borrowed as mutable
  2 cannot borrow `*self` as mutable more than once at a time
  2 `types::log_level_type::LogLevelType` doesn't implement `std::fmt::Debug`
  1 use of moved value: `matches`
  1 type annotations required: cannot resolve `std::boxed::Box<std::iter::Map<std::collections::hash_map::Iter<'_, &T, std::collections::HashSet<&U>>, [closure@src/weighted_rendezvous.rs:490:40: 493:10]>>: std::iter::Iterator`
  1 type annotations required: cannot resolve `std::boxed::Box<std::iter::Map<std::collections::hash_map::Iter<'_, &T, std::collections::HashSet<&U>>, [closure@src/weighted_rendezvous.rs:483:40: 486:10]>>: std::iter::Iterator`
  1 conflicting implementations of trait `std::convert::From<main::LogarithmicKnob>` for type `main::Knob`:
  1 conflicting implementations of trait `std::convert::From<main::LinearKnob>` for type `main::Knob`:
  1 conflicting implementations of trait `main::KnobControl` for type `main::Knob`:
  1 cannot borrow `self.map` as mutable more than once at a time
  1 cannot borrow `*tree` as mutable more than once at a time
  1 cannot borrow `*current` as mutable more than once at a time
  1 assign to part of possibly uninitialized variable: `xgcval`

// Infra
3 linking with `cc` failed: exit code: 1
3 ld returned 1 exit status
1 multiple matching crates for `local_encoding`
1 multiple matching crates for `docmatic`
1 can't find crate for `local_encoding`
1 can't find crate for `docmatic`
1 the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/xi-frontend/xi-term/Cargo.lock needs to be updated but --locked was passed to prevent this
1 the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Prorok64b/web_crawler/Cargo.lock needs to be updated but --locked was passed to prevent this
1 the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mneumann/graph-similarity-cmd/Cargo.lock needs to be updated but --locked was passed to prevent this
1 the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/MalteT/mensa/Cargo.lock needs to be updated but --locked was passed to prevent this
1 the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/git-series/git-series/Cargo.lock needs to be updated but --locked was passed to prevent this
1 the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/0X1A/core-utils/Cargo.lock needs to be updated but --locked was passed to prevent this
1 scenario did not finish successfully: \"2\"\nscenarios:   -> reason: job exited with non-zero exit code: 1\nscenarios: not all scenarios terminated successfully\n"`,
1 scenario did not finish successfully: \"1\"\nscenarios:   -> reason: job exited with non-zero exit code: 1\nscenarios: not all scenarios terminated successfully\n"`', tests/tests.rs:420:9
1 process didn't exit successfully: `/opt/crater/target/debug/deps/test_calls-e2efa9867cc7232e` (signal: 4, SIGILL: illegal instruction)
1 process didn't exit successfully: `/opt/crater/target/debug/deps/smalloca-4a140daaf79cea64` (signal: 4, SIGILL: illegal instruction)
1 process didn't exit successfully: `/opt/crater/target/debug/deps/mujs-5e5e5db7b26bab7e` (signal: 4, SIGILL: illegal instruction)
1 process didn't exit successfully: `/opt/crater/target/debug/deps/esr-2b38354cb0dbd2fa` (signal: 11, SIGSEGV: invalid memory reference)
1 process didn't exit successfully: `/opt/crater/target/debug/deps/consistenttime-f55c7a6e800763f5` (signal: 4, SIGILL: illegal instruction)

petrochenkov · 2019-08-24T22:14:14Z

use of unstable library feature 'test': bench is a part of custom test frameworks which are unstable

This is caused by #62507 and tracked by #63798.

CAD97 · 2019-08-24T22:18:57Z

Does crater respect Cargo.lock? I wonder what percentage of the #[bench] attributes come from e.g. route-recognizer and would go away with a cargo update.

petrochenkov · 2019-08-24T22:24:04Z

failed to resolve: could not find rustc_serialize in {{root}}

Caused by #63449.
Tests in rustc-serialize and its fork rustc-serialize2 are broken, no other crates are affected.
(Can be fixed with extern crate self as rustc_serivalize;.)
Probably no action required.

petrochenkov · 2019-08-24T22:30:16Z

lifetime name 's declared twice in the same scope

lifetime name 'input declared twice in the same scope

./reg/cff/0.5.0/beta-2019-08-13.txt:[INFO] [stderr] error[E0263]: lifetime name `'s` declared twice in the same scope
./reg/sfnt/0.12.0/beta-2019-08-13.txt:[INFO] [stderr] error[E0263]: lifetime name `'s` declared twice in the same scope
./reg/tarrasque/0.10.0/beta-2019-08-13.txt:[INFO] [stderr] error[E0263]: lifetime name `'s` declared twice in the same scope

./reg/reformation/0.4.1/beta-2019-08-13.txt:[INFO] [stdout] error[E0263]: lifetime name `'input` declared twice in the same scope

This may be something caused by derive hygienization (#63462 or some of the earlier PRs) and/or this PR - #63501.
cc @matthewjasper @nikomatsakis

petrochenkov · 2019-08-24T22:56:36Z

attributes starting with rustc are reserved for use by the rustc compiler

./reg/select-rustc/0.1.2/beta-2019-08-13.txt:[INFO] [stdout] error[E0658]: attributes starting with `rustc` are reserved for use by the `rustc` compiler

Expected breakage from #62133, attributes of the form rustc::anything are now reserved for rustc.

petrochenkov · 2019-08-24T23:11:14Z

cannot find macro trace! in this scope

cannot find macro flatdata_intersperse! in this scope

./reg/eztrace/0.1.0/beta-2019-08-13.txt:[INFO] [stderr] error: cannot find macro `trace!` in this scope

./reg/flatdata/0.3.0/beta-2019-08-13.txt:[INFO] [stderr] error: cannot find macro `flatdata_intersperse!` in this scope

Regression from #63114, fixed in #63717.
(The fix still needs a backport to beta.)

petrochenkov · 2019-08-24T23:21:57Z

expected open delimiter

./reg/dtolnay/0.0.2/beta-2019-08-13.txt:[INFO] [stderr] error: expected open delimiter

Expected breakage of an unstable feature (my_macro! name { ... } no longer parses), caused by #62258.

petrochenkov · 2019-08-25T00:40:38Z

expected one of !, ., ::, ;, ?, {, }, or an operator, found is

./reg/google-games1/1.0.10+20190627/beta-2019-08-13.txt:[INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `is`

Minimized reproduction, run with rustdoc --test (all the whitespace is important!):

/// #
///
///     ident ident
fn f() {}

Apparently something makes this comment look like code to rustdoc, so it tries to doctest it.

Actually, stable rustdoc also gives an error for this, from what I tried locally, not sure why it passed on crater.
cc @rust-lang/rustdoc

matthewjasper · 2019-08-25T08:20:05Z

lifetime name 's declared twice in the same scope

lifetime name 'input declared twice in the same scope

This is due to #63083. E0263 now compares identifiers with modern hygiene rather than directly.

./reg/cff/0.5.0/beta-2019-08-13.txt:[INFO] [stderr] error[E0263]: lifetime name `'s` declared twice in the same scope
./reg/sfnt/0.12.0/beta-2019-08-13.txt:[INFO] [stderr] error[E0263]: lifetime name `'s` declared twice in the same scope
./reg/tarrasque/0.10.0/beta-2019-08-13.txt:[INFO] [stderr] error[E0263]: lifetime name `'s` declared twice in the same scope

Relevant code: https://docs.rs/tarrasque-macro/0.10.0/src/tarrasque_macro/lib.rs.html#193. 's is being added to the parameters even when it's already there.
cc @KyleMayes

./reg/reformation/0.4.1/beta-2019-08-13.txt:[INFO] [stdout] error[E0263]: lifetime name `'input` declared twice in the same scope

Appears to be fixed in the recently published 0.5.0

shepmaster · 2019-08-25T13:19:54Z

Apparently something makes this comment look like code to rustdoc, so it tries to doctest it.

The comment (// ) is followed by 4 spaces ( ), Markdown syntax for a code block.

See also:

petrochenkov · 2019-08-25T14:09:34Z

expected module, found unresolved item crate::mod

./gh/xi-frontend/xi-term/beta-2019-08-13.txt:[INFO] [stderr] error[E0577]: expected module, found unresolved item `crate::mod`

This is the most hilarious case so far.
Apparently due to some recovery going wrong paths like {crate,self,super}::r#keyword silently resolve to Res::Err without reporting any error (I've made an issue for this - #63882).

Code in xrl-0.0.7 looked like this

pub(in crate::r#mod) fn new() { ... }

and it broke when visibility resolution switched to a different algorithm ("early resolution") in #63400, which doesn't have this bug.
I'd expect this issue to be discoverable by some kind of fuzzing, but I'd never expect it to be encountered by real code!

So, the regression is a bugfix and this bug needs to be fixed in other contexts as well, #63882 is the tracking issue for that.

petrochenkov · 2019-08-25T14:19:41Z

failed to resolve: use of undeclared type or module SliceConcatExt

./gh/echupriyanov/tls-ws/beta-2019-08-13.txt:[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `SliceConcatExt`

SliceConcatExt was an unstable standard library trait removed in #62403.

petrochenkov · 2019-08-25T14:53:39Z

cannot determine resolution for the derive macro Debug

./reg/ruroonga_command/0.3.4/beta-2019-08-13.txt:[INFO] [stderr] error: cannot determine resolution for the derive macro `Debug`

Minimized:

use Enum::Debug;

#[derive(Debug)] // Add some more derives if the error does not reproduce
enum Enum {
    Debug
}

This is a regression from #63248, and #63867 works in the same direction but hasn't landed yet.

Basically, the import is blocked until the derive is expanded and the derive is blocked until the import is resolved, so we have a deadlock.

This worked previously, because we did some things in less principled way (textual comparisons instead of resolution), which allowed us to produce the enum earlier, before resolving the Debug, but now we need to resolve it before producing the Enum.

This is fixable in principle, by making the expansion infra more fine-grained (introducing some new "resolved, but not yet ready for expansion" states), but I'm afraid that's not something that could be backported to beta.
So, I'd say wontfix. Unfortunate, but seems acceptable given the number of affected crates (one regression found).

pietroalbini · 2019-08-25T14:56:48Z

@petrochenkov all this triage look great, but it's not easily actionable if it's all done in this issue. Could you move each regression to its own issue, and maybe add checkboxes in your list here to track the progress?

petrochenkov · 2019-08-25T15:07:52Z

Ok, I'll make separate issues once I've looked at the remaining regressions.

UPD: Done.

petrochenkov · 2019-08-25T15:56:26Z

proc macro panicked

[INFO] [stderr]    Compiling custom-slice-macros v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error: proc macro panicked
[INFO] [stderr]    --> tests/derives.rs:48:13
[INFO] [stderr]     |
[INFO] [stderr] 48  | /             custom_slice_macros::define_slice_types_pair! {
[INFO] [stderr] 49  | |                 #[custom_slice(owned)]
[INFO] [stderr] 50  | |                 $(#[$meta_owned])*
[INFO] [stderr] 51  | |                 struct Owned($owned_inner);
[INFO] [stderr] ...   |
[INFO] [stderr] 59  | |                 fn validate(_: &$slice_inner) -> Result<(), $ty_error> $body
[INFO] [stderr] 60  | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr] ...
[INFO] [stderr] 227 | /     gen_test! {
[INFO] [stderr] 228 | |         name: try_from_inner,
[INFO] [stderr] 229 | |         #[custom_slice(derive(TryFromInner))]
[INFO] [stderr] 230 | |         #[custom_slice(error(r#type = "()"))]
[INFO] [stderr] ...   |
[INFO] [stderr] 236 | |         validator: () { Ok(()) },
[INFO] [stderr] 237 | |     }
[INFO] [stderr]     | |_____- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = help: message: `#[custom_slice(error(type = "..."))]` should be specified

This is a regression from these series of pretty-printing improvements - #62393, #62574, #62667.

Tokens are printed more precisely now, so #[custom_slice(error(r#type = "()"))] is now printed as is, while previously it lost the "rawness" qualifier from type and was printed like this - #[custom_slice(error(type = "()"))].
(Pretty-printing matters because proc macros often have to work with pretty-printed version of their input due to #43081.)

Procedural macro define_slice_types_pair however doesn't recognize r#type as type and complains.

petrochenkov · 2019-08-25T16:06:35Z

custom attribute panicked

[INFO] [stderr]    Compiling display-as v0.4.6 (/opt/crater/workdir)
[INFO] [stderr] error: custom attribute panicked
[INFO] [stderr]    --> tests/format_as.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     #[with_template("Foo " self.0)]
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: message: with_template must be applied to an impl that ends in '{}', not { }

One more victim to the pretty-printing changes (#62667), whitespace-related in this case.

Here's what the macro does:

    if last.to_string() != "{  }" {
        /* report error */
    }

Pretty unreliable check, isn't it?

sgrif · 2019-08-25T16:24:16Z

Yeah, those both seem like reliance on implementation details

…

On Sun, Aug 25, 2019, 9:07 AM Vadim Petrochenkov ***@***.***> wrote: custom attribute panicked [INFO] [stderr] Compiling display-as v0.4.6 (/opt/crater/workdir) [INFO] [stderr] error: custom attribute panicked [INFO] [stderr] --> tests/format_as.rs:104:5 [INFO] [stderr] | [INFO] [stderr] 104 | #[with_template("Foo " self.0)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: message: with_template must be applied to an impl that ends in '{}', not { } One more victim to the pretty-printing changes (#62393 <#62393>, #62574 <#62574>, #62667 <#62667>), whitespace-related in this case. Here's what the macro does: if last.to_string() != "{ }" { /* report error */ } Pretty unreliable check, isn't it? — You are receiving this because you are on a team that was mentioned. Reply to this email directly, view it on GitHub <#63628?email_source=notifications&email_token=AALVMK3YC63MNEHSLR4DLLLQGKU4TA5CNFSM4IMEXQT2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD5CWMYI#issuecomment-524641889>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AALVMK5UANDNY6WDSLSOAL3QGKU4TANCNFSM4IMEXQTQ> .

petrochenkov · 2019-08-25T16:29:00Z

proc-macro derive panicked

[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / proc_macro_item_decl! {
[INFO] [stderr] 12 | |     /// Generates a default blanket impl for a generic trait that gets passed into
[INFO] [stderr] 13 | |     /// `autoimpl!`, with the same type parameters and type bounds as its trait.
[INFO] [stderr] 14 | |     ///
[INFO] [stderr] ...  |
[INFO] [stderr] 44 | |     autoimpl! => generate_auto_impl_impl
[INFO] [stderr] 45 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: assertion failed: `(left == right)`
[INFO] [stderr]              left: `Some("#[allow(unused,")`,
[INFO] [stderr]             right: `Some("#[allow(unused")`

All of the 62 regressions are due to old versions of proc-macro-hack having an assert expecting #[allow(unused, instead of #[allow(unused ,.
So this is again a consequence of whitespace changes in pretty-printing (#62667).

I think we should be able to fix this by special casing the comma token during token stream pretty-printing and not printing the space before it.

craterbot · 2019-09-04T18:51:03Z

🚧 Experiment beta-1.38-rustdoc-1 is now running on agent aws-1.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

craterbot · 2019-09-08T11:21:33Z

🎉 Experiment beta-1.38-rustdoc-1 is completed!
📊 757 regressed and 2 fixed (70078 total)
📰 Open the full report.

⚠️ If you notice any spurious failure please add them to the blacklist!
ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

petrochenkov · 2019-10-18T20:37:22Z

Did anyone triage the regressions not related to the frontend?
"cannot use state because it was mutably borrowed" and below.
I didn't look at them.

1.38 was released a few weeks ago so it's too late to do it now, but if they weren't triaged that means some kind of a process break.

Mark-Simulacrum · 2019-10-18T20:39:35Z

I suspect no -- I thought all regressions were triaged (and issues opened, etc.)

petrochenkov · 2019-10-18T22:27:51Z

Made an issue - #65577.

craterbot added the S-waiting-on-crater Status: Waiting on a crater run to be completed. label Aug 16, 2019

craterbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-crater Status: Waiting on a crater run to be completed. labels Aug 24, 2019

petrochenkov mentioned this issue Aug 24, 2019

[1.38] #[bench] accepted on stable but not beta #63798

Closed

petrochenkov mentioned this issue Aug 25, 2019

resolve: Block expansion of a derive container until all its derives are resolved #63867

Merged

Mark-Simulacrum closed this as completed Oct 18, 2019

petrochenkov mentioned this issue Oct 18, 2019

Rust 1.38 regressions weren't fully triaged #65577

Closed

JLDLaughlin mentioned this issue Jan 15, 2020

Add progress tracking todo to Kafka sink MaterializeInc/materialize#1548

Merged

Crater runs for Rust 1.38.0 #63628

Crater runs for Rust 1.38.0 #63628

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