Commit Graph

70 Commits

Author SHA1 Message Date
Aleksey Kladov
f22af66c37 Fixes 2020-07-30 10:43:47 +02:00
Aleksey Kladov
5e498546e8 Fix non-linux compilation 2020-07-30 10:40:55 +02:00
Aleksey Kladov
7204374719 Report instructions in addition to time
They hopefully will be more stable on CI
2020-07-30 10:23:32 +02:00
Aleksey Kladov
4bab553029 fix cast 2020-07-30 10:14:35 +02:00
Aleksey Kladov
afab67e69c Allow negative bytes
Gotta be optimistic about those memory usage optimizations
2020-07-30 09:57:36 +02:00
Aleksey Kladov
dae99b6661 Drop resident from memory usage 2020-07-30 09:45:20 +02:00
Aleksey Kladov
451edcc098 Add rustc-perf to metrics 2020-07-25 10:35:45 +02:00
Aleksey Kladov
9ad41eb908 Setup global allocator in the correct crate
It worked before, but was roundabout
2020-07-22 13:42:53 +02:00
Aleksey Kladov
deed44a472 Remove support for jemalloc
We only used it for measuring memory usage, but now we can use glibc's
allocator for that just fine
2020-07-22 13:40:45 +02:00
Jonas Schievink
56c090d0d0 Allow gathering memory stats on non-jemalloc Linux 2020-07-21 19:55:54 +02:00
bors[bot]
b8b41c5f41
Merge #5354
5354: Add opt-in mimalloc feature r=matklad a=ivan

This adds a `mimalloc` feature to use [mimalloc](https://github.com/microsoft/mimalloc) via [mimalloc_rust](https://github.com/purpleprotocol/mimalloc_rust), and a corresponding `cargo xtask install --server --mimalloc`.

In my tests on Linux, mimalloc seems to run consistently faster than jemalloc and uses only slightly more memory in `analysis-stats` on chalk. Also, builds with mimalloc produce a binary 3MB smaller than builds with jemalloc.

A summary of `env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/` runs on NixOS master on an Intel 4790K in VMware Workstation:

<table>
<tr>
<td></td><td>self-reported time</td><td>elapsed time</td><td>max RSS</td>
</tr>
<tr><td>glibc 2.30 run 1</td><td>225.1 sec</td><td>3:46.91</td><td>1075208</td></tr>
<tr><td>glibc 2.30 run 2</td><td>228.4 sec</td><td>3:50.13</td><td>1074996</td></tr>
<tr><td>jemalloc run 1</td><td>201.8 sec</td><td>3:23.03</td><td>1055960</td></tr>
<tr><td>jemalloc run 2</td><td>199.2 sec</td><td>3:20.41</td><td>1065040</td></tr>
<tr><td>mimalloc run 1</td><td>188.6 sec</td><td>3:09.77</td><td>1105584</td></tr>
<tr><td>mimalloc run 2</td><td>185.0 sec</td><td>3:06.23</td><td>1108132</td></tr>
<tr><td>mimalloc + lto run 1</td><td>160.7 sec</td><td>2:41.80</td><td>1106076</td></tr>
<tr><td>mimalloc + lto run 2</td><td>162.2 sec</td><td>2:43.31</td><td>1104268</td></tr>
</tr>
</table>

I included an `lto = true; codegen-units = 1` run out of curiosity, this PR doesn't enable it.

<details>
<summary>analysis-stats benchmark runs</summary>

## default

```
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.10s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 333.880345ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 10.176299461s, 0b allocated 0b resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 214.968806927s, 0b allocated 0b resident
Total: 225.145114417s, 0b allocated 0b resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 225.34
        System time (seconds): 1.49
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 3:46.91
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1075208
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 6
        Minor (reclaiming a frame) page faults: 294711
        Voluntary context switches: 365
        Involuntary context switches: 3273
        Swaps: 0
        File system inputs: 2904
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.10s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 332.711598ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 9.895020518s, 0b allocated 0b resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 218.5001697s, 0b allocated 0b resident
Total: 228.39519833s, 0b allocated 0b resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 228.26
        System time (seconds): 1.75
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 3:50.13
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1074996
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 9
        Minor (reclaiming a frame) page faults: 294748
        Voluntary context switches: 330
        Involuntary context switches: 1561
        Swaps: 0
        File system inputs: 12608
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
```

## jemalloc
```
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.11s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 356.090374ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 10.176550183s, 439mb allocated 465mb resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 191.607201827s, 993mb allocated 1036mb resident
Total: 201.783937913s, 993mb allocated 1036mb resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 201.07
        System time (seconds): 1.89
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 3:23.03
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1055960
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 357755
        Voluntary context switches: 240
        Involuntary context switches: 1889
        Swaps: 0
        File system inputs: 256
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.10s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 317.917622ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 9.902142185s, 439mb allocated 463mb resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 189.295317017s, 993mb allocated 1046mb resident
Total: 199.197555943s, 993mb allocated 1046mb resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 198.64
        System time (seconds): 1.67
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 3:20.41
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1065040
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 369013
        Voluntary context switches: 243
        Involuntary context switches: 2835
        Swaps: 0
        File system inputs: 0
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
```

## mimalloc
```
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.12s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 332.116806ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 9.796643695s, 0b allocated 0b resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 178.82132362s, 0b allocated 0b resident
Total: 188.617975605s, 0b allocated 0b resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 187.70
        System time (seconds): 1.97
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 3:09.77
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1105584
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 296481
        Voluntary context switches: 222
        Involuntary context switches: 1868
        Swaps: 0
        File system inputs: 256
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.13s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 320.046776ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 9.287690124s, 0b allocated 0b resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 175.710939697s, 0b allocated 0b resident
Total: 184.998640033s, 0b allocated 0b resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 184.38
        System time (seconds): 1.81
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 3:06.23
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1108132
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 297055
        Voluntary context switches: 374
        Involuntary context switches: 2374
        Swaps: 0
        File system inputs: 0
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
```

## mimalloc + lto
```
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.11s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 369.600196ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 7.572726834s, 0b allocated 0b resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 153.090899101s, 0b allocated 0b resident
Total: 160.663635235s, 0b allocated 0b resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 160.01
        System time (seconds): 1.70
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 2:41.80
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1106076
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 1
        Minor (reclaiming a frame) page faults: 296610
        Voluntary context switches: 209
        Involuntary context switches: 2798
        Swaps: 0
        File system inputs: 8
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
# env time -v cargo run --release -p rust-analyzer -- analysis-stats ../chalk/
    Finished release [optimized] target(s) in 0.10s
     Running `target/release/rust-analyzer analysis-stats ../chalk/`
[ERROR ra_project_model] cyclic dependency chalk-integration -> chalk-engine
[ERROR ra_project_model] cyclic dependency chalk-recursive -> chalk-integration
[ERROR ra_project_model] cyclic dependency chalk-solve -> chalk-integration
Database loaded 334.630658ms
Crates in this dir: 11
Total modules found: 159
Total declarations: 2631
Total functions: 1947
Item Collection: 7.71699197s, 0b allocated 0b resident
Total expressions: 57094
Expressions of unknown type: 2938 (5%)
Expressions of partially unknown type: 2427 (4%)
Type mismatches: 232
Inference: 154.50351318s, 0b allocated 0b resident
Total: 162.220513775s, 0b allocated 0b resident
        Command being timed: "cargo run --release -p rust-analyzer -- analysis-stats ../chalk/"
        User time (seconds): 161.52
        System time (seconds): 1.74
        Percent of CPU this job got: 99%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 2:43.31
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 1104268
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 0
        Minor (reclaiming a frame) page faults: 296183
        Voluntary context switches: 200
        Involuntary context switches: 1666
        Swaps: 0
        File system inputs: 0
        File system outputs: 0
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 0
```
</details>

Co-authored-by: Ivan Kozik <ivan@ludios.org>
2020-07-15 09:43:08 +00:00
Ivan Kozik
6710856c10 Add opt-in mimalloc feature 2020-07-14 20:57:51 +00:00
Yuki Okushi
6f423466d1
Add a license field to all the crates 2020-07-14 10:57:26 +09:00
Aleksey Kladov
7f6e5de37c disable profiling 2020-07-11 03:41:52 +02:00
Aleksey Kladov
5e25000763 Profiling example 2020-07-11 03:41:01 +02:00
Aleksey Kladov
e7ba7f47a7 Profiling tweaks 2020-07-11 03:04:37 +02:00
veetaha
24d18d92f6 Simplify profiler impl (bubble up Option and shorten code 2020-04-26 00:55:49 +03:00
Aleksey Kladov
bd9ede0ec9 Extract messy tree handling out of profiling code 2020-04-25 21:22:40 +02:00
Aleksey Kladov
95b989ec30 Simplify 2020-04-25 19:50:42 +02:00
Aleksey Kladov
726938f598 Simplify hprof 2020-04-25 19:30:00 +02:00
Aleksey Kladov
b3e9f3d143 Move hprof to a separate file 2020-04-25 19:30:00 +02:00
Aleksey Kladov
7623db1106 minor clenup 2020-04-25 19:30:00 +02:00
Aleksey Kladov
1b68c72fe9 Move timeit to stdx 2020-04-10 20:46:42 +02:00
Aleksey Kladov
12297ab675 Fix race in the tests 2020-03-30 11:33:01 +02:00
Aleksey Kladov
b33b843f40 Allow specifying additional info on call to profile 2020-03-06 17:36:51 +01:00
Shotaro Yamada
33de107ed9 Remove unused dependencies 2020-02-27 14:04:13 +09:00
Aleksey Kladov
2ff23c172e Make backtrace optional 2020-02-19 16:28:25 +01:00
Kirill Bulatov
f6816c253b Update versions 2020-02-18 16:12:40 +02:00
Kirill Bulatov
b8ddcb0652 Run cargo +nightly fix --clippy -Z unstable-options 2020-02-18 16:03:08 +02:00
Aleksey Kladov
c0fa5e2246 Rename the binary to rust-analyzer 2020-02-18 12:33:16 +01:00
Laurențiu Nicola
b6b8fd9525 Replace ra_cli mentions 2020-02-17 22:07:24 +02:00
Aleksey Kladov
98cc51580d Enable profiling for bench 2020-02-16 18:04:08 +01:00
Aleksey Kladov
24ad1cce2c Avoid premature pessimization
The extra allocation for message should not matter here at all, but
using a static string is just as ergonomic, if not more, and there's
no reason to write deliberately slow code
2020-02-02 18:56:37 +01:00
bors[bot]
5dcd9fdf5e
Merge #2895
2895: Rewrite ra_prof's profile printing r=michalt a=michalt

This changes the way we print things to first construct a mapping from
events to the children and uses that mapping to actually print things.
It should not change the actual output that we produce.

The new approach two benefits:

 * It avoids a potential quadratic behavior of the previous approach.
   For instance, for a vector of N elements:
   ```
   [Message{level: (N - 1)}, ..., Message{level: 1}, Message{level: 0}]
   ```
   we would first do a linear scan to find entry with level 0, then
   another scan to find one with level 1, etc.

 * It makes it much easier to improve the output in the future, because
   we now pre-compute the children for each entry and can easily take
   that into account when printing.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>

Co-authored-by: Michal Terepeta <michal.terepeta@gmail.com>
2020-01-29 20:09:49 +00:00
Michal Terepeta
644c383f65 A couple of small improvements to ra_prof printing
Based on suggestions from @matklad.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>
2020-01-29 20:55:35 +01:00
Aleksey Kladov
6577a7622d Add print_time helper 2020-01-25 11:59:11 +01:00
Michal Terepeta
39cbb6b620 Rewrite ra_prof's profile printing
This changes the way we print things to first construct a mapping from
events to the children and uses that mapping to actually print things.
It should not change the actual output that we produce.

The new approach two benefits:

 * It avoids a potential quadratic behavior of the previous approach.
   For instance, for a vector of N elements:
   ```
   [Message{level: (N - 1)}, ..., Message{level: 1}, Message{level: 0}]
   ```
   we would first do a linear scan to find entry with level 0, then
   another scan to find one with level 1, etc.

 * It makes it much easier to improve the output in the future, because
   we now pre-compute the children for each entry and can easily take
   that into account when printing.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>
2020-01-22 20:13:56 +01:00
Michal Terepeta
e8acf49088 Fix a corner case when printing unaccounted time
Previously `ra_prof` wouldn't actually print the unaccounted time in
some cases.

We would print, for instance, this:
```
    5ms - foo
        2ms - bar
```
instead of:
```
    5ms - foo
        2ms - bar
        3ms - ???
```

The fix is to properly handle the case when an entry has 0 children
instead of using the `last` variable.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>
2020-01-19 18:34:40 +01:00
Michal Terepeta
bc91120b7c Improve profiling output when duration filter is specified
In particular:

  - Use strict inequality for comparisons, since that's what the filter
    syntax supports.

  - Convert to millis for comparisons, since that's the unit used both
    for the filter and when printing.

Now something like `RA_PROFILE='*>0'` will only print things that took
at least 1ms (when rounded to millis).

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>
2020-01-02 17:26:02 +01:00
Aleksey Kladov
08df355375 More compact profiling display 2019-12-22 14:17:31 +01:00
Aleksey Kladov
7e2f4b30db Disable doctests 2019-11-17 18:35:05 +03:00
kjeremy
50825a41d8 Renormalize line endings 2019-11-14 19:44:37 -05:00
kjeremy
fc9c2915c7 Even if jemalloc feature is used do not use it on msvc
Fixes #2233
2019-11-14 11:47:18 -05:00
Aleksey Kladov
baa968e71c show unaccounted for time in profiling 2019-10-24 09:14:33 +03:00
Alexander Andreev
fdbd6bb11a Added test for check doc strings in crates.
#1856
2019-09-30 11:58:53 +03:00
Aleksey Kladov
4b6bccb58c ⬆️ once_cell 2019-09-01 23:18:15 +03:00
Aleksey Kladov
e751e4d8a3 Remove cpuprofile dependencies 2019-08-17 15:29:57 +03:00
Jeremy A. Kolb
5e9198f809 jemallocator 0.3 2019-07-17 10:58:17 -04:00
Alexander Andreev
35a0f04128 Added extract path attribute for current module
#1211
2019-07-06 14:04:56 +03:00
Aleksey Kladov
1834bae5b8 allow rustfmt to reorder imports
This wasn't a right decision in the first place, the feature flag was
broken in the last rustfmt release, and syntax highlighting of imports
is more important anyway
2019-07-04 23:09:09 +03:00