test: Test failures with `iterdelete: too slow`

[gopherbot]

#!watchflakes
post <- pkg == "test" && test == "Test" && `iterdelete: too slow`

Issue created automatically to collect these failures.

Example (log):

PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
--- FAIL: Test (0.07s)
    --- FAIL: Test/maplinear.go (53.61s)
        testdir_test.go:117: exit status 2
            panic: iterdelete: too slow: 80000 inserts: 1.920556115s; 160000 inserts: 6.61823371s


            goroutine 1 [running]:
            panic({0x97840?, 0x3f64108060?})
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/panic.go:1016 +0x3a0 fp=0x3f64064ea0 sp=0x3f64064df0 pc=0x3eef8
            main.checkLinear({0xa939e, 0xa}, 0x9c4, 0x3f64052000?)
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:59 +0x1b8 fp=0x3f64064f58 sp=0x3f64064ea0 pc=0x89790
            main.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:158 +0x15c fp=0x3f64064f80 sp=0x3f64064f58 pc=0x89964
            runtime.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:261 +0x234 fp=0x3f64064fd8 sp=0x3f64064f80 pc=0x4196c
            runtime.goexit()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/asm_riscv64.s:512 +0x4 fp=0x3f64064fd8 sp=0x3f64064fd8 pc=0x6a1ec

go tool dist: Failed: exit status 1

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "test" && test == "Test"

2023-04-12 20:52 linux-riscv64-unmatched go@12e65dbd test.Test (log)

PASS
PASS
PASS
PASS
PASS
PASS
PASS
PASS
--- FAIL: Test (0.07s)
    --- FAIL: Test/maplinear.go (53.61s)
        testdir_test.go:117: exit status 2
            panic: iterdelete: too slow: 80000 inserts: 1.920556115s; 160000 inserts: 6.61823371s


            goroutine 1 [running]:
            panic({0x97840?, 0x3f64108060?})
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/panic.go:1016 +0x3a0 fp=0x3f64064ea0 sp=0x3f64064df0 pc=0x3eef8
            main.checkLinear({0xa939e, 0xa}, 0x9c4, 0x3f64052000?)
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:59 +0x1b8 fp=0x3f64064f58 sp=0x3f64064ea0 pc=0x89790
            main.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:158 +0x15c fp=0x3f64064f80 sp=0x3f64064f58 pc=0x89964
            runtime.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:261 +0x234 fp=0x3f64064fd8 sp=0x3f64064f80 pc=0x4196c
            runtime.goexit()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/asm_riscv64.s:512 +0x4 fp=0x3f64064fd8 sp=0x3f64064fd8 pc=0x6a1ec

go tool dist: Failed: exit status 1

— watchflakes

[bcmills]

Compare #53574.

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "test" && test == "Test" && `iterdelete: too slow`

2023-06-16 14:09 linux-mips64le-rtrk go@1a7709d6 test.Test (log)

--- FAIL: Test (0.07s)
    --- FAIL: Test/maplinear.go (38.91s)
        testdir_test.go:132: exit status 2
            panic: iterdelete: too slow: 40000 inserts: 1.415448905s; 80000 inserts: 4.614489773s


            goroutine 1 [running]:
            panic({0xc6e40, 0xc000010040})
            	/tmp/gobuilder-mips64le/go/src/runtime/panic.go:1017 +0x520 fp=0xc00006ce58 sp=0xc00006cdb0 pc=0x52418
            main.checkLinear({0xd9bcf, 0xa}, 0x9c4, 0xe1638)
            	/tmp/gobuilder-mips64le/go/test/maplinear.go:59 +0x278 fp=0xc00006cf20 sp=0xc00006ce58 pc=0xb86f0
            main.main()
            	/tmp/gobuilder-mips64le/go/test/maplinear.go:158 +0x260 fp=0xc00006cf48 sp=0xc00006cf20 pc=0xb8a00
            runtime.main()
            	/tmp/gobuilder-mips64le/go/src/runtime/proc.go:267 +0x3fc fp=0xc00006cfd8 sp=0xc00006cf48 pc=0x56444
            runtime.goexit()
            	/tmp/gobuilder-mips64le/go/src/runtime/asm_mips64x.s:648 +0x4 fp=0xc00006cfd8 sp=0xc00006cfd8 pc=0x8f11c

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "test" && test == "Test" && `iterdelete: too slow`

2023-10-25 19:25 linux-riscv64-unmatched go@57322b3c test.Test (log)

--- FAIL: Test (0.12s)
    --- FAIL: Test/maplinear.go (51.92s)
        testdir_test.go:142: exit status 2
            panic: iterdelete: too slow: 40000 inserts: 1.883251702s; 80000 inserts: 7.681992247s


            goroutine 1 [running]:
            panic({0x96fc0?, 0x3f7000e040?})
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/panic.go:772 +0x128 fp=0x3f700a4e88 sp=0x3f700a4de0 pc=0x3f2d8
            main.checkLinear({0xaa06f, 0xa}, 0x9c4, 0x3f70056000?)
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:60 +0x1b8 fp=0x3f700a4f40 sp=0x3f700a4e88 pc=0x87ac8
            main.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:159 +0x15c fp=0x3f700a4f68 sp=0x3f700a4f40 pc=0x87c9c
            runtime.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:269 +0x280 fp=0x3f700a4fd8 sp=0x3f700a4f68 pc=0x42550
            runtime.goexit({})
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/asm_riscv64.s:521 +0x4 fp=0x3f700a4fd8 sp=0x3f700a4fd8 pc=0x6a194

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "test" && test == "Test" && `iterdelete: too slow`

2023-10-31 20:38 linux-riscv64-unmatched go@66b8107a test.Test (log)

--- FAIL: Test (0.06s)
    --- FAIL: Test/maplinear.go (63.13s)
        testdir_test.go:142: exit status 2
            panic: iterdelete: too slow: 80000 inserts: 1.713146765s; 160000 inserts: 6.810602411s


            goroutine 1 [running]:
            panic({0x96fc0?, 0x3f5c096040?})
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/panic.go:772 +0x128 fp=0x3f5c0b0e88 sp=0x3f5c0b0de0 pc=0x3f2d8
            main.checkLinear({0xaa06f, 0xa}, 0x9c4, 0x3f5c05e000?)
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:60 +0x1b8 fp=0x3f5c0b0f40 sp=0x3f5c0b0e88 pc=0x87a98
            main.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/test/maplinear.go:159 +0x15c fp=0x3f5c0b0f68 sp=0x3f5c0b0f40 pc=0x87c6c
            runtime.main()
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/proc.go:269 +0x280 fp=0x3f5c0b0fd8 sp=0x3f5c0b0f68 pc=0x42550
            runtime.goexit({})
            	/tmp/workdir-host-linux-riscv64-unmatched/go/src/runtime/asm_riscv64.s:521 +0x4 fp=0x3f5c0b0fd8 sp=0x3f5c0b0fd8 pc=0x6a18c

— watchflakes