x/net/http2: TestConfigPingTimeoutServer failures

[gopherbot]

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/10 21:12:38 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2484 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c6d60, 0x9, 0x9}, {0xc1c798, 0xa46000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c6d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x99e5a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-go1.24-js-wasm net@09731f9b release-branch.go1.24@0ace2d8a x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/10 21:12:38 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2484 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c6d60, 0x9, 0x9}, {0xc1c798, 0xa46000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c6d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x99e5a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo3505824037/http2/server.go:978 +0x66

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@574a9fa6 x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/10 21:40:48 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2490 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20458, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo447282868/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo447282868/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo447282868/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo447282868/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@2abe5ceb x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/10 22:14:42 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20318, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo1379345479/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo1379345479/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo1379345479/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo1379345479/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@2a772a2f x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 01:10:38 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20418, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo2644611048/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2644611048/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2644611048/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo2644611048/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@2d097e36 x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 04:44:39 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20358, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo2326749910/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2326749910/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2326749910/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo2326749910/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@a588c6fb x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 13:02:12 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc1c218, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo2752755484/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2752755484/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2752755484/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo2752755484/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@598df45f x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 15:40:51 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc1c218, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo3953576650/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3953576650/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3953576650/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo3953576650/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@31658ace x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 19:41:53 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20418, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo119607875/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo119607875/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo119607875/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo119607875/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@8867af92 x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 21:38:54 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20518, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo1934692426/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo1934692426/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo1934692426/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo1934692426/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@4acc5b4d x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/11 22:33:37 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc204d8, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo3681595821/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3681595821/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3681595821/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo3681595821/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@ca19f987 x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/12 00:38:47 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc1c218, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo137397555/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo137397555/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo137397555/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo137397555/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@bcd0ebbd x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/12 01:50:02 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20558, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo3294815916/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3294815916/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo3294815916/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo3294815916/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@4ff70cf8 x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/12 03:29:10 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20558, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo2582550079/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2582550079/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo2582550079/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo2582550079/http2/server.go:978 +0x66

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "golang.org/x/net/http2" && test == "TestConfigPingTimeoutServer"

2025-03-10 21:07 x_net-gotip-js-wasm net@09731f9b go@d037ed62 x/net/http2.TestConfigPingTimeoutServer [ABORT] (log)

=== RUN   TestConfigPingTimeoutServer
    http2_test.go:66: 2025/03/12 12:59:09 timeout waiting for PING response
panic: test timed out after 10m0s
	running tests:
		TestConfigPingTimeoutServer (10m0s)

goroutine 46 [running]:
testing.(*M).startAlarm.func1()
	/home/swarming/.swarming/w/ir/x/w/goroot/src/testing/testing.go:2492 +0x44
created by time.goFunc
...
io.ReadFull(...)
	/home/swarming/.swarming/w/ir/x/w/goroot/src/io/io.go:354
golang.org/x/net/http2.readFrameHeader({0x8c8d60, 0x9, 0x9}, {0xc20318, 0xa48000})
	/home/swarming/.swarming/w/ir/x/w/targetrepo735297821/http2/frame.go:237 +0x5
golang.org/x/net/http2.(*Framer).ReadFrame(0x8c8d20)
	/home/swarming/.swarming/w/ir/x/w/targetrepo735297821/http2/frame.go:501 +0xb
golang.org/x/net/http2.(*serverConn).readFrames(0x9a05a0)
	/home/swarming/.swarming/w/ir/x/w/targetrepo735297821/http2/server.go:855 +0x14
created by golang.org/x/net/http2.(*serverConn).serve in goroutine 36
	/home/swarming/.swarming/w/ir/x/w/targetrepo735297821/http2/server.go:978 +0x66

— watchflakes