cmd/internal/testdir: Test/typeparam/chansimp.go failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/internal/testdir" && test == "Test/typeparam/chansimp.go"

Issue created automatically to collect these failures.

Example (log):

=== RUN   Test/typeparam/chansimp.go
=== PAUSE Test/typeparam/chansimp.go
=== CONT  Test/typeparam/chansimp.go
    testdir_test.go:145: exit status 2
        panic: Ranger Send should have failed, but timed out
        
        goroutine 1 gp=0x402128 m=3 mp=0x438b08 [running]:
        panic({0xc7e78, 0xf6538})
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:778 +0x150 fp=0x434758 sp=0x434704 pc=0x49f44
        main.TestRanger()
...
        runtime.gcBgMarkWorker(0x580000)
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1333 +0xf4 fp=0x58bfe4 sp=0x58bf88 pc=0x2a8f0
        runtime.gcBgMarkStartWorkers.gowrap1()
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1249 +0x28 fp=0x58bfec sp=0x58bfe4 pc=0x2a7d0
        runtime.goexit({})
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm.s:884 +0x4 fp=0x58bfec sp=0x58bfec pc=0x830e4
        created by runtime.gcBgMarkStartWorkers in goroutine 1
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1249 +0x14c
        
--- FAIL: Test/typeparam/chansimp.go (60.59s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/internal/testdir" && test == "Test/typeparam/chansimp.go"

2024-03-08 02:00 gotip-linux-arm go@5a329c3b cmd/internal/testdir.Test/typeparam/chansimp.go (log)

=== RUN   Test/typeparam/chansimp.go
=== PAUSE Test/typeparam/chansimp.go
=== CONT  Test/typeparam/chansimp.go
    testdir_test.go:145: exit status 2
        panic: Ranger Send should have failed, but timed out
        
        goroutine 1 gp=0x402128 m=3 mp=0x438b08 [running]:
        panic({0xc7e78, 0xf6538})
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:778 +0x150 fp=0x434758 sp=0x434704 pc=0x49f44
        main.TestRanger()
...
        runtime.gcBgMarkWorker(0x580000)
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1333 +0xf4 fp=0x58bfe4 sp=0x58bf88 pc=0x2a8f0
        runtime.gcBgMarkStartWorkers.gowrap1()
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1249 +0x28 fp=0x58bfec sp=0x58bfe4 pc=0x2a7d0
        runtime.goexit({})
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_arm.s:884 +0x4 fp=0x58bfec sp=0x58bfec pc=0x830e4
        created by runtime.gcBgMarkStartWorkers in goroutine 1
        	/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:1249 +0x14c
        
--- FAIL: Test/typeparam/chansimp.go (60.59s)

— watchflakes