runtime: frequent failures with `sys: trap` on plan9/386 and plan9/amd64

```
#!watchflakes
post <- builder ~ `^plan9-.*` && `(suicide:|fatal error:|signal) sys: trap: (fault|general protection violation)`
```

```
# internal/poll [io.test]
compile 11275: suicide: sys: trap: fault write addr=0x0 pc=0x00040481
FAIL	io [build failed]
```

These occur in lots of different binaries, and have occurred (but much less frequently) on `plan9-arm`.
@0intro, could you investigate? This appears to be one of the more frequent failure modes on the `plan9-386-0intro` builder, and since it appears to affect all Go binaries we cannot easily work around it by skipping one or more tests.

`greplogs --dashboard -md -l -e 'suicide: sys: trap: fault'`

<details>

[2021-12-13T18:41:35-083ef54/plan9-386-0intro](https://build.golang.org/log/c70ec556b5fc9a8cfa53d59f73f57c227f0efa8c)
[2021-12-09T19:01:08-8ff254e/plan9-386-0intro](https://build.golang.org/log/910ceb0b8cd08d7a4bb50ed87ebf8d419d34ac00)
[2021-12-09T16:59:48-307d7c6/plan9-386-0intro](https://build.golang.org/log/79eff7ac0cbb42fdb2276684ab893cf1fdb0cef6)
[2021-12-07T20:14:56-d3358c1-b37a539/plan9-386-0intro](https://build.golang.org/log/bf553402d63b2e4904bd7a7b9ec2786ca6d2ccc9)
[2021-11-29T00:58:50-1ea4d3b/plan9-386-0intro](https://build.golang.org/log/03575f79b6372e681e16ac85ce11345f44782d6f)
[2021-11-26T13:18:11-7703804/plan9-386-0intro](https://build.golang.org/log/df7b4d89690bf0b9b4f58c4d754d36981d6e4ea9)
[2021-11-24T20:54:12-696515e/plan9-386-0intro](https://build.golang.org/log/81c3512e14fcfac0a87ba2676c40079ca1e22ced)
[2021-11-17T19:51:32-9a33945/plan9-386-0intro](https://build.golang.org/log/77c42bdb41624469c3cb591dd989c8af03c08d5d)
[2021-11-08T14:49:56-ab31dbc/plan9-386-0intro](https://build.golang.org/log/035a19e86fcdc28dd2b703b6d8177048707b76a1)
[2021-11-06T19:41:14-cfb3dc7/plan9-386-0intro](https://build.golang.org/log/75b6ae66221e397b5ecd5b8738c58b4cbceef174)
[2021-11-06T16:43:43-3544082/plan9-386-0intro](https://build.golang.org/log/a079661192d47cc36e88c4b19286c60290bfe138)
[2021-11-05T22:57:08-09e8de7/plan9-386-0intro](https://build.golang.org/log/1bd8528f86282ceefa881215fb1ea24a2e6097d1)
[2021-11-05T22:54:47-ba79c1e/plan9-386-0intro](https://build.golang.org/log/204d4caea491dc60c998b9e1bb74beafd5243e52)
[2021-11-05T22:53:55-3b7e376/plan9-386-0intro](https://build.golang.org/log/428376caba029fffc66cd69945e545120314f0c9)
[2021-11-05T22:28:32-feb024f/plan9-386-0intro](https://build.golang.org/log/9f9f1f2252021f24be9b3cd01109c0355d50d678)
[2021-11-05T22:27:21-8f923a4/plan9-386-0intro](https://build.golang.org/log/08a6a3c20f7c0e7dfca1a821ed831622a0edf2cf)
[2021-11-05T22:03:24-035963c/plan9-386-0intro](https://build.golang.org/log/bf3d5f42da713d22be2b56dc0e9c959ed76a34c7)
[2021-11-05T22:00:16-755ede0/plan9-386-0intro](https://build.golang.org/log/f01f9e06fa0b66914ac177e4050506d76f95e508)
[2021-11-05T21:48:25-6b223e8/plan9-386-0intro](https://build.golang.org/log/b0a8c9c5106484b4ece82402d828ceffc2652df2)
[2021-11-05T21:28:34-90462df/plan9-386-0intro](https://build.golang.org/log/a731d04b041fd439c7785a489e3dfa8171486e3e)
[2021-09-07T19:39:04-d92101f/plan9-arm](https://build.golang.org/log/a5584bf40e3539938a3d08b986e6f6da2f3f1d84)
[2021-08-17T02:50:08-29ec74f/plan9-386-0intro](https://build.golang.org/log/3eb56c7d3b210db74178efa8a15d001c286431ab)
[2021-08-15T19:56:18-98d530a-717894c/plan9-386-0intro](https://build.golang.org/log/906fe3b7849035149bd0e42c16196933401fe721)
[2021-08-15T19:56:18-717894c/plan9-386-0intro](https://build.golang.org/log/0e11b32d1657978ec1bd9ddc2af8ac14bb502a29)
[2021-05-14T07:53:46-c925e15/plan9-386-0intro](https://build.golang.org/log/8cee373d82b67ffb27770777b3ca458a5d75877a)
[2021-05-10T19:19:34-dc50683/plan9-386-0intro](https://build.golang.org/log/744f9a20b7372b93f7a5d4026aebc28b10d7653d)
[2021-05-10T15:47:41-e18a8b4/plan9-386-0intro](https://build.golang.org/log/0755ae00caab4bcbbc657b09a6b4d0a860844f5c)
[2021-05-06T17:09:23-51ff3a6/plan9-386-0intro](https://build.golang.org/log/3f296d28b07f969e05fcf1422e6b67432e3fd04b)
[2021-05-06T16:00:55-6c591f7/plan9-386-0intro](https://build.golang.org/log/afef0e681742a6b980eaf0c6083e3f91b8fe3506)
[2021-04-29T13:24:00-858fdbe-eb3fe28/plan9-arm](https://build.golang.org/log/e06e468f7532e137d767733e33298e49bee4fd40)
[2021-04-28T20:36:50-fa6ed6e/plan9-386-0intro](https://build.golang.org/log/32e02d07d4766a4897b0f61dd71ac2b243095a76)
[2021-04-27T21:44:16-645cb62/plan9-386-0intro](https://build.golang.org/log/4483e470d1dd261b31b69fa98edefded2f07aaf0)
[2021-04-27T19:53:45-d0768c9-b9dfaf7/plan9-386-0intro](https://build.golang.org/log/b472a84969bd7b04b5902d2a4bec14f91e73fede)
[2021-04-21T16:26:01-b8a359d/plan9-386-0intro](https://build.golang.org/log/ad88a3ab762db0562620e664bdb37106ef577e5a)
[2021-04-21T15:57:05-f9e2dbb/plan9-386-0intro](https://build.golang.org/log/456d8e9eee53fb3b618c08a1533196008f117f2a)
[2021-04-16T20:18:11-4fb74e0/plan9-386-0intro](https://build.golang.org/log/ebad5de1d8b6eaa69eed46adeb991ed6c03992f5)
[2021-04-14T21:00:20-23f8c20/plan9-386-0intro](https://build.golang.org/log/12dc7ced884d472ab81127797abe68be1ed992d9)
[2021-03-25T14:46:50-4d66d77/plan9-386-0intro](https://build.golang.org/log/bef9162b9e872f5b821c4772ae45a8284812f0f5)
[2021-03-25T04:06:37-c69515c/plan9-386-0intro](https://build.golang.org/log/e947bc55176a765e4d5771492ca822f96c5030b5)
[2021-03-13T11:26:35-83e79c7/plan9-386-0intro](https://build.golang.org/log/fb81052937465c106bf8e4836e2ce6f889d19f6b)
[2021-03-13T00:32:00-7b47f9a/plan9-386-0intro](https://build.golang.org/log/1c92e26cc4a7ed9901f2c82eff862531797430be)
[2021-03-04T16:21:10-3778f8e/plan9-386-0intro](https://build.golang.org/log/daee96985014e6d1dc95885de38ddb78858c1b77)
[2021-03-04T03:30:55-4532467/plan9-386-0intro](https://build.golang.org/log/2f419f1c9efac7e9fc74b977d98a189a73735e66)
[2021-02-19T19:28:53-06b86e9/plan9-386-0intro](https://build.golang.org/log/ee715ee70c2e3b7ec9d9917b5de139129e3dcf89)
[2021-02-11T01:10:35-930c2c9/plan9-386-0intro](https://build.golang.org/log/288b584576b8014f38fe98032f6dfe828cd4416c)
[2021-02-03T15:04:02-e491c6e/plan9-386-0intro](https://build.golang.org/log/5bc5f8e3a206f08b9333e6559285a00de51ec5ec)
[2021-01-25T23:52:43-a51921f/plan9-386-0intro](https://build.golang.org/log/89f146206de849661f533d58426d8969c5f187cb)
[2020-12-14T22:04:37-278b9a8/plan9-386-0intro](https://build.golang.org/log/b075a6c5a3705ee29a1e9a4060419977bd30c856)
[2020-12-11T22:02:02-1430552/plan9-arm](https://build.golang.org/log/78d80f308c6b09ae616ae46101b653405188f794)
[2020-11-30T17:21:22-294c214/plan9-arm](https://build.golang.org/log/be242c1f86533644b7d0003c5aec0f281f2b65d1)
[2020-11-27T23:29:38-cb84d83/plan9-386-0intro](https://build.golang.org/log/e65376be74c9cfcfd01c8103416c1be988068d80)
[2020-11-27T22:28:11-0252cfd/plan9-386-0intro](https://build.golang.org/log/3e0379696b24ff43a100af82d914c3b5582f3369)
[2020-11-25T19:46:00-4481ad6/plan9-386-0intro](https://build.golang.org/log/45c6790b410a8879a34239a87769c76a64e18304)
[2020-11-25T19:21:55-ef603be/plan9-386-0intro](https://build.golang.org/log/00961e60f03f8052b81a066f592e715532d87b59)
[2020-11-10T18:42:47-9e8e0b3-8f2db14/plan9-arm](https://build.golang.org/log/b6666b8e3a61eb0408baf15d266bb08a37246749)
[2020-11-06T10:45:31-854e892/plan9-amd64-9front](https://build.golang.org/log/ec8299529c42cd987fabd6542971cbbf02923e2f)
[2020-11-02T16:14:49-05e6d28/plan9-arm](https://build.golang.org/log/c688eb7f625c2506b59ddfc91185cc61cae87769)
[2020-10-21T13:19:35-54c0237/plan9-386-0intro](https://build.golang.org/log/beb41b13a87a39d608c87451a5a4836a108bae3f)
[2020-10-21T09:34:39-9848e93/plan9-386-0intro](https://build.golang.org/log/dfd32a009043297fe0a7c553545f77755c2e2a8b)
[2020-10-01T16:43:20-ad8447b/plan9-386-0intro](https://build.golang.org/log/f2481a627342b678dc992979aed4867ff4dd5179)
[2020-09-28T18:13:48-a424f6e/plan9-386-0intro](https://build.golang.org/log/4ece0b85925afa30522e4cf6607256bbc193a86f)
[2020-09-25T19:10:05-8266570/plan9-386-0intro](https://build.golang.org/log/32a2617f417a5941f9ff6a24300a00fb3e80a8b3)
[2020-09-11T15:07:26-ffd95aa/plan9-386-0intro](https://build.golang.org/log/4d5bb5c7464affd6d05b57e217c83dec588e015c)
[2020-08-26T21:11:51-bf869c6/plan9-386-0intro](https://build.golang.org/log/81ea384f7c264d216a983cea0d41eeb047b44aa1)
[2020-08-16T13:55:00-cf9b4f6/plan9-386-0intro](https://build.golang.org/log/fd8a953eceb946e9c7a57012ff031b3233e507b4)
[2020-08-02T00:04:25-f923374/plan9-386-0intro](https://build.golang.org/log/f1b2c805064eca582a650260fbe3f3f340494078)
[2020-06-08T21:36:04-2cd2ff6/plan9-386-0intro](https://build.golang.org/log/d9c184af3ac1d99aa2e8dc265588def544827cd3)
[2020-06-02T20:44:05-c082c1f/plan9-arm](https://build.golang.org/log/344f88fd8b0c71df51eabcb0983ba8a13bd08a9e)
[2020-05-01T18:47:23-8be365f/plan9-386-0intro](https://build.golang.org/log/36c4abb7f9ec9b146eba2ac036ccf154abcde6bf)
[2020-04-15T16:37:53-555d28b-813f8ea/plan9-arm](https://build.golang.org/log/9d546d612d2e817c33d8067b58ad6cd7e3226035)
[2020-04-11T02:04:15-59c9f1b-06314b6/plan9-arm](https://build.golang.org/log/b53618a022769c04c88c66a2b45c492ad7e4293e)
[2020-04-07T21:51:03-0a82000/plan9-386-0intro](https://build.golang.org/log/e9a6e57b03d4e19da6c7defd294b3f2fc7ce58f9)
[2020-04-07T15:03:09-553a862/plan9-386-0intro](https://build.golang.org/log/59aa63d13997686475ee2ea63015d8752b3f2a74)
[2020-04-06T18:06:41-e3b113b-74d6de0/plan9-arm](https://build.golang.org/log/8bb88b44b4db349695fe9c6c0fed401ab8418be1)
[2020-03-30T03:39:49-0b7c202/plan9-386-0intro](https://build.golang.org/log/fdb7315ce4ac122ce2b7556bc0d48865a3b26a3e)
[2020-03-27T17:14:16-e5e73c1-0cc1290/plan9-arm](https://build.golang.org/log/c0f3becfc13b68eaa1acbf4859e13d15df0d27af)
[2020-03-27T15:27:59-827a7a9/plan9-386-0intro](https://build.golang.org/log/f3a4cbcce436d8646c38217d1a2a97617fd99411)
[2020-03-27T14:49:08-dbd22c7/plan9-386-0intro](https://build.golang.org/log/b22af369c2266fa158af9e5c052dfcd5977a3310)
[2020-03-26T19:07:15-437bd90/plan9-386-0intro](https://build.golang.org/log/936a0bc6ebf33f57af73601c5b3a317d783de237)
[2020-03-26T17:48:20-918d4d4/plan9-386-0intro](https://build.golang.org/log/eec3dff5b35de49d57291346988c461876d98abc)
[2020-03-25T13:10:07-16cfab8/plan9-386-0intro](https://build.golang.org/log/b30dfccaba1dbc43091e90120db1a451e730e179)
[2020-03-25T04:06:34-6b6414c/plan9-386-0intro](https://build.golang.org/log/14f4ba0cd11e133281f7ba9eeb3b365f95cec52c)
[2020-03-23T03:31:16-328b4cd-ab2cc45/plan9-arm](https://build.golang.org/log/5fe4d943f8942fe08fcf2798ab5728e764014ffc)
[2020-03-23T03:31:16-118fecf-ab2cc45/plan9-arm](https://build.golang.org/log/0095ec5cbf0dcd4cc42850854a44d4e29caf7564)
[2020-03-21T06:00:19-d467f3b/plan9-386-0intro](https://build.golang.org/log/e68e8c2c3ed8ffaa8ae55e9e0dc97e66a9c5b844)
[2020-03-20T00:49:34-63522db-d55e0c1/plan9-arm](https://build.golang.org/log/b66221fae7118aca61095979e73cca1330c03da0)
[2020-03-18T16:00:44-5766fd3-0c0e8f2/plan9-arm](https://build.golang.org/log/6bba9a604161bc1323a17b38b8254e6e39ae610d)
[2020-03-17T20:48:23-adf48cb-0eeec4f/plan9-arm](https://build.golang.org/log/dad411e2cdefc3e0bcf274debff2c9f43fe2a680)
[2020-03-16T22:31:39-adf48cb-2fbca94/plan9-arm](https://build.golang.org/log/4c20a0a3aeba398355b38afbaa12cd8e2b77098e)
[2020-03-15T08:14:24-dc32553/plan9-386-0intro](https://build.golang.org/log/f4f130dcec2f2ade316d586417635d6ff77e832b)
[2020-03-15T06:17:36-2b920cb/plan9-386-0intro](https://build.golang.org/log/48176b399aca1bccde9bf49a443086bdfd75d967)
[2020-03-14T04:12:41-5c8b2ff-70dc28f/plan9-arm](https://build.golang.org/log/db940155060d6537ae305d6bd64027ff6a3fcc42)
[2020-03-13T22:25:52-e8ecda8/plan9-386-0intro](https://build.golang.org/log/afa20015498edd3021aa22dd090734106e6fe609)
[2020-03-11T22:32:55-67d93cf/plan9-386-0intro](https://build.golang.org/log/7c3f51fb3ab0ba7043e9898a44bce00d1e1023bb)
[2020-03-10T19:41:44-78000ba-5db3c8f/plan9-arm](https://build.golang.org/log/ede2de780fefea915dc78d55c4a2dc26c33965e6)
[2020-03-10T00:47:00-a79ac2b/plan9-386-0intro](https://build.golang.org/log/8ea07ee9ccae23cc44c88ed0925a5c28a54eb9c2)
[2020-03-06T14:41:22-2b0f481/plan9-arm](https://build.golang.org/log/ec9452032040c84f59953f8b6e479f2cd5507ec2)
[2020-03-03T18:42:30-7b0b6c2/plan9-arm](https://build.golang.org/log/6843389386f1925304d614c72b52c3b7e1e69845)
[2020-03-03T04:56:11-5b15941/plan9-386-0intro](https://build.golang.org/log/7bc5a02b56a8b8369c29846388beb7651b22bec5)
[2020-03-01T21:02:40-e44cda3/plan9-386-0intro](https://build.golang.org/log/51fe6ca983d84d755b21510a6add4803487ed218)
[2020-02-26T21:54:09-8bdd24d/plan9-386-0intro](https://build.golang.org/log/7c1911b1cda6ff816749612a573adfc338d4bd04)
[2020-02-26T14:31:35-26aadfa/plan9-386-0intro](https://build.golang.org/log/3227f596665907f5ff989ca2380bdfd4a3f588a2)
[2020-02-17T10:30:03-88e564e/plan9-386-0intro](https://build.golang.org/log/d2e9ddd35457acde5d38a71ecdeb20a165569991)
[2020-02-05T00:06:37-f770366/plan9-386-0intro](https://build.golang.org/log/e54ec32bb68ee3a74578e7c265a3b24c9d1b4186)
[2020-01-30T02:33:27-0d34f5f/plan9-386-0intro](https://build.golang.org/log/0c3957bdc8d8f3effa3e3d2e7f98f7c78ba95665)
[2020-01-29T02:43:35-212c0bf/plan9-386-0intro](https://build.golang.org/log/42f59689b9c5b247504c418a8a4143ee65d053c3)
[2020-01-28T22:08:43-e7f9e17/plan9-386-0intro](https://build.golang.org/log/b17b4036c848a5061efce9176f5857af292e9b09)
[2020-01-23T19:11:41-39ea3d0/plan9-386-0intro](https://build.golang.org/log/1ec67122a517532e1c4bfbcc05b35559025378cb)
[2020-01-23T18:03:09-8689ea6/plan9-386-0intro](https://build.golang.org/log/47859e731578332e03f8cf4393089c7916d80787)
[2020-01-23T00:22:41-9f1d55c/plan9-386-0intro](https://build.golang.org/log/f7c7379def0a9be35a845d3db41e239456f75aeb)
[2020-01-22T00:45:41-71bbffb/plan9-386-0intro](https://build.golang.org/log/02bc81a12006f5742851aef9d6931b205d102d1b)
[2020-01-18T14:41:40-98d2717/plan9-386-0intro](https://build.golang.org/log/8f2b2995ffc49b15a41ee009acc2301302ef4ddc)
[2020-01-13T23:35:18-563287a/plan9-386-0intro](https://build.golang.org/log/5abc3521ce3a9797652ae25e1b47f90f14994784)
[2020-01-03T19:04:06-4ffd1a0/plan9-386-0intro](https://build.golang.org/log/a1fe4cb50cc4bd0c33de741c4f2ce7b5c4328270)
[2019-12-27T03:36:24-2d6f8cc/plan9-386-0intro](https://build.golang.org/log/d5b9ea88dafa1966fee23dbb437c37b4503af075)
[2019-12-24T16:07:08-2e320a2/plan9-386-0intro](https://build.golang.org/log/0db5c47234bd1f1d37db8f84b9a0164c2bdac4b7)
[2019-12-11T22:01:13-a15b5d3/plan9-386-0intro](https://build.golang.org/log/272ab3d2d9fb63803f637206aaccdec99d9f79b9)
[2019-12-09T02:02:17-daaab44/plan9-386-0intro](https://build.golang.org/log/8e39a78382053ec1ff0b4ab96c6ffea3fae5feb2)
[2019-11-22T19:01:42-c931f1b/plan9-386-0intro](https://build.golang.org/log/e83a36ac2ecb2b2a94f78475065c1f0a2e99a12f)
[2019-11-19T06:08:56-1046a9c/plan9-386-0intro](https://build.golang.org/log/b7da362d2a0bde990e0004ea873f532b0520107d)
[2019-11-18T05:26:46-f9c8255-2bde3c1/plan9-386-0intro](https://build.golang.org/log/a834a0ff95ce0fa6a4827764648ac084a7cdd812)
[2019-11-16T02:06:39-a1ab85d-c20b71e/plan9-386-0intro](https://build.golang.org/log/cb9cc04911642309b0fd7b29351b86080d7414b7)
[2019-11-15T18:52:11-e1fa960/plan9-386-0intro](https://build.golang.org/log/fbacd69e2584f442024c5fb47f6dec54af17f687)
[2019-11-14T01:57:00-3f21c23/plan9-386-0intro](https://build.golang.org/log/28808872219803a6af258c7316f338056231b6d9)
[2019-11-13T23:05:47-608b94b/plan9-386-0intro](https://build.golang.org/log/cef4770ac97e458255f9c35e65e46125060f1c83)
[2019-11-13T21:24:35-718f553/plan9-386-0intro](https://build.golang.org/log/4aad43c60b7287960b462ddf5be2ba86a76e3c05)
[2019-11-12T21:02:24-00e14af/plan9-386-0intro](https://build.golang.org/log/caca96131f2d3268c6c9084e5e5023e3472e719d)
[2019-11-12T17:14:12-07513d2/plan9-386-0intro](https://build.golang.org/log/9db71aaeaafc86cb768aa5fb421f883fcf1a3830)
[2019-11-09T19:25:46-6e11195/plan9-386-0intro](https://build.golang.org/log/a65f75a813501752baa99bc2e29f2c13730ed999)
[2019-11-08T20:05:25-7a5e0fe/plan9-386-0intro](https://build.golang.org/log/5cc09a51ae1f476124c1effc7eff021120ca47e0)
[2019-11-08T19:28:49-f6ff806/plan9-386-0intro](https://build.golang.org/log/f4526c5a4a16a4ed4f5522947012e2456b8cee1c)
[2019-11-08T18:25:40-aff3aaa/plan9-386-0intro](https://build.golang.org/log/4288fa6d796cbf05ab13cfebc139c760de21ee26)
[2019-11-08T16:20:17-4208dbe/plan9-386-0intro](https://build.golang.org/log/c55885ad1e9493e3a285f7f8201018243a6f37f9)
[2019-11-04T18:51:13-bf7e55b/plan9-arm](https://build.golang.org/log/3e50cf4339e5eae672c42dfb271e93d337405081)
[2019-11-04T15:18:34-d3660e8/plan9-386-0intro](https://build.golang.org/log/1dcfa79fd9ceb919885427b151fbc0f935643e47)
[2019-10-22T21:23:03-7d891d5/plan9-386-0intro](https://build.golang.org/log/7cdcea7343781abfb74c63899cddfea5bed1ebe8)
[2019-09-18T20:51:31-e13dd94/plan9-arm](https://build.golang.org/log/adebd396a297d9aaabb1e551f137812edac85858)
[2019-09-10T23:01:30-b970487/plan9-386-0intro](https://build.golang.org/log/a1349a37ef6c887b8a5685a629d5a2b1af09ef11)
[2019-08-31T14:56:29-c96d794/plan9-amd64-9front](https://build.golang.org/log/567e1e5ae0cdce83482b647b6c3ac8c4c9193a94)
[2019-06-19T19:37:19-0ab1cc3/plan9-386-0intro](https://build.golang.org/log/553e7ac5feb29038ab08eb53345d6fe5aa61f24e)
[2018-12-18T12:02:45-42b3178-c52beb1/plan9-386](https://build.golang.org/log/30607c96868a48e4330c046ceb94742bb6de4ee2)
[2018-10-12T23:17:42-49bb7ce-b4150f7/plan9-386](https://build.golang.org/log/7c5bb543cbfd47cea3069e37fc9294e1e3b4fc60)
[2018-10-05T20:30:11-e363607-3d19d95/plan9-386](https://build.golang.org/log/b5d91f0705bd902e5c30e1086443d467bc5b4164)
[2018-08-03T03:58:03-56440b8-4cc09cd/plan9-386](https://build.golang.org/log/2e39ec908c38341cf282d9d0ecf1ffe8a85a0995)
[2018-07-24T23:54:08-3673e40-5f5402b/plan9-386](https://build.golang.org/log/2f8ce8dde34e7578b07b3a0c0a6a6f4077625ba2)
[2018-07-13T03:53:00-a49355c-8a33045/plan9-386](https://build.golang.org/log/5125e45b5f269e10164be40ce0a503b0118d487d)
[2018-07-10T03:00:05-292b43b-5a8b652/plan9-386](https://build.golang.org/log/391382c7a4af219af9862c5435cfdb4f08fca617)
[2018-06-29T17:44:10-3d766fa-cbce223/plan9-386](https://build.golang.org/log/2a549973c01888e7b151aaee659c15d45e061adb)
[2018-06-26T23:56:13-af66def-f040e43/plan9-386](https://build.golang.org/log/6e6e7372766a4527ef36965869a69e08657cacbb)
[2018-06-25T18:17:49-af66def-4f172e7/plan9-386](https://build.golang.org/log/0bf47cacec67a2d3d7dbb9258df3db995f380e22)
[2018-06-18T23:20:57-af66def-c993002/plan9-386](https://build.golang.org/log/40875239c3f39f65583ae0b319836a20c5cb5abe)
[2018-06-09T07:34:45-1e49130-d67db88/plan9-386](https://build.golang.org/log/12f0880c74842714a1849860189c2d7a2a28767b)
[2018-06-08T02:11:51-0d7a669-1425412/plan9-386](https://build.golang.org/log/a7c112f3156048aba6b1d7be81d65dbf1111f7b8)
[2018-06-01T15:24:42-5ba7f63-3d6e4ec/plan9-386](https://build.golang.org/log/78c5c4496e86e0390c9626cada4fb6323b53e827)
[2018-05-31T22:48:13-5ba7f63-a7e0a92/plan9-386](https://build.golang.org/log/13d1cb85e73823b90b83644f0af490fb1de15fbb)
[2018-04-25T17:08:07-b0697ec-f2df0ec/plan9-386](https://build.golang.org/log/39ce0ecabb2aa56ea14b408d5bc171f19138f06f)
[2018-03-13T16:09:57-182114d-518e6f0/plan9-386](https://build.golang.org/log/c55efba1a358f4d665f9803121cd3a8579ebbd46)
[2018-03-10T21:20:50-ea1fc7e-c15b7b2/plan9-386](https://build.golang.org/log/8ee861b9afdeaab9a637812917c038c0bbbfc03a)
[2018-03-09T01:58:41-c7dcf10-6b5a0b5/plan9-386](https://build.golang.org/log/7c7bc41d891ac8c767e54e54607408fd12939caa)

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runtime: frequent failures with `sys: trap` on plan9/386 and plan9/amd64 #50137

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runtime: frequent failures with sys: trap on plan9/386 and plan9/amd64 #50137

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runtime: frequent failures with `sys: trap` on plan9/386 and plan9/amd64 #50137