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work around linux not honoring write_at for O_APPEND files #143166
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Operating system: Unix-like
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Weird, the kernel should be new enough.
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☔ The latest upstream changes (presumably #143294) made this pull request unmergeable. Please resolve the merge conflicts.
requires a kernel >= 6.9
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The job pr-check-2 failed! Check out the build log: (web) (plain enhanced) (plain)
Click to see the possible cause of the failure (guessed by this bot)
CACHE_DOMAIN: ci-caches.rust-lang.org
PR_CI_JOB: 1
IMAGE: pr-check-2
##[endgroup]
Linux fv-az2251-742 6.11.0-1015-azure #15~24.04.1-Ubuntu SMP Thu May 1 02:52:08 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
##[group]Run src/ci/scripts/collect-cpu-stats.sh
src/ci/scripts/collect-cpu-stats.sh
shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0}
---
COPY scripts/sccache.sh /scripts/
RUN sh /scripts/sccache.sh
ENV SCRIPT \
ldd --version && \
python3 ../x.py test --stage 1 std -- "write_at" || \
strace -ffe write,pwritev2,pwrite64,pwritev python3 ../x.py test --stage 1 std -- "write_at"
#!/bin/sh
# ignore-tidy-linelength
set -ex
---
DirectMap4k: 126912 kB
DirectMap2M: 6164480 kB
DirectMap1G: 12582912 kB
##[endgroup]
Executing ldd --version && python3 ../x.py test --stage 1 std -- write_at || strace -ffe write,pwritev2,pwrite64,pwritev python3 ../x.py test --stage 1 std -- write_at
+ ldd --version
ldd (Ubuntu GLIBC 2.35-0ubuntu3.10) 2.35
Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.
+ python3 ../x.py test --stage 1 std -- write_at
##[group]Building bootstrap
Finished `dev` profile [unoptimized] target(s) in 0.05s
##[endgroup]
downloading https://static.rust-lang.org/dist/2025-06-24/rustfmt-nightly-x86_64-unknown-linux-gnu.tar.xz
extracting /checkout/obj/build/cache/2025-06-24/rustfmt-nightly-x86_64-unknown-linux-gnu.tar.xz to /checkout/obj/build/x86_64-unknown-linux-gnu/rustfmt
---
failures:
---- fs::tests::file_test_append_write_at stdout ----
thread 'fs::tests::file_test_append_write_at' panicked at library/std/src/fs/tests.rs:510:5:
assertion `left == right` failed
left: "it\'s not working! "
right: "it\'s working!"
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
failures:
fs::tests::file_test_append_write_at
test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 599 filtered out; finished in 657.35μs
error: test failed, to rerun pass `-p std --lib`
Build completed unsuccessfully in 0:08:06
+ strace -ffe write,pwritev2,pwrite64,pwritev python3 ../x.py test --stage 1 std -- write_at
strace: Process 14093 attached
[pid 14093] write(1, "Linux x86_64 x86_64\n", 20) = 20
[pid 14093] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14093, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14094 attached
[pid 14094] write(1, "GNU/Linux\n", 10) = 10
[pid 14094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14094, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14095 attached
[pid 14095] write(1, "fd9ca711a3a0e2bd5bd33a345fa44393"..., 41) = 41
[pid 14095] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14095, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
##[group]Building bootstrap
write(1, "::group::Building bootstrap\n", 28) = 28
strace: Process 14096 attached
[pid 14096] pwrite64(9, "0円0円0円0円0円0円0円0円0円0円0円0円211円337円207円305円0円0円0円31円0円0円2円0円0円0円20円0円0円0円0円0円"..., 512, 0) = 512
[pid 14096] pwrite64(9, "0円0円0円17円", 4, 512) = 4
[pid 14096] pwrite64(9, "\r0円0円0円l0円361円0円17円333円17円271円17円230円17円z17円T0174円17円26円16円370円16円332円16円270円16円226円16円w"..., 4096, 516) = 4096
[pid 14096] pwrite64(9, "211円337円214円316円", 4, 4612) = 4
[pid 14096] pwrite64(9, "0円0円0円24円", 4, 4616) = 4
[pid 14096] pwrite64(9, "\r0円0円0円202円1円35円0円17円336円17円272円17円230円17円u17円\\17円@17円&17円\v16円363円16円333円16円301円16円246円"..., 4096, 4620) = 4096
[pid 14096] pwrite64(9, "211円337円214円N", 4, 8716) = 4
[pid 14096] pwrite64(9, "0円0円0円1円", 4, 8720) = 4
[pid 14096] pwrite64(9, "SQLite format 30円20円0円1円1円0円@ 0円0円0円\v0円0円0円31円"..., 4096, 8724) = 4096
[pid 14096] pwrite64(9, "211円337円212円(", 4, 12820) = 4
[pid 14096] pwrite64(9, "331円325円5円371円 241円c327円0円0円0円3円", 12, 0) = 12
[pid 14096] pwrite64(6, "SQLite format 30円20円0円1円1円0円@ 0円0円0円\f0円0円0円31円"..., 4096, 0) = 4096
[pid 14096] pwrite64(6, "\r0円0円0円l0円361円0円17円333円17円271円17円230円17円z17円T0174円17円26円16円370円16円332円16円270円16円226円16円w"..., 4096, 57344) = 4096
[pid 14096] pwrite64(6, "\r0円0円0円202円1円35円0円17円336円17円272円17円230円17円u17円\\17円@17円&17円\v16円363円16円333円16円301円16円246円"..., 4096, 77824) = 4096
[pid 14096] write(9, "||||", 4) = 4
strace: Process 14097 attached
[pid 14096] write(2, " Finished", 12 Finished) = 12
[pid 14096] write(2, " `dev` profile [unoptimized] tar"..., 48 `dev` profile [unoptimized] target(s) in 0.25s
) = 48
[pid 14096] write(9, "|", 1) = 1
[pid 14096] write(9, "|", 1) = 1
[pid 14096] write(9, "|", 1) = 1
[pid 14097] --- SIGUSR1 {si_signo=SIGUSR1, si_code=SI_TKILL, si_pid=14096, si_uid=1001} ---
[pid 14097] write(9, "|", 1) = 1
[pid 14097] write(9, "|", 1) = 1
[pid 14097] write(9, "|", 1) = 1
[pid 14097] +++ exited with 0 +++
[pid 14096] write(12, "/checkout/obj/build/bootstrap/de"..., 3580) = 3580
[pid 14096] write(12, "/checkout/obj/build/bootstrap/de"..., 3612) = 3612
[pid 14096] write(12, "/checkout/obj/build/bootstrap/de"..., 3662) = 3662
[pid 14096] write(12, "/checkout/obj/build/bootstrap/de"..., 3613) = 3613
[pid 14096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14096, si_uid=1001, si_status=0, si_utime=3, si_stime=7} ---
write(1, "::endgroup::\n", 13) = 13
##[endgroup]
strace: Process 14098 attached
strace: Process 14099 attached
[pid 14099] write(1, "../\n", 4) = 4
[pid 14099] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14099, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14100 attached
[pid 14100] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14100, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14101 attached
strace: Process 14102 attached
strace: Process 14103 attached
[pid 14101] write(1, "2025-07-05", 10) = 10
[pid 14101] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14101, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14102] write(1, "af116d1d46fbfa7e9b73c93c1bc8467d"..., 41) = 41
[pid 14102] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14102, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14103] write(1, "af116d1d4\n", 10) = 10
[pid 14103] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14103, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14104 attached
strace: Process 14105 attached
[pid 14104] write(6, "||||||||||||||||||||||||||||||||", 32) = 32
strace: Process 14106 attached
strace: Process 14107 attached
[pid 14106] write(1, "/checkout/obj/build/x86_64-unkno"..., 52) = 52
[pid 14106] +++ exited with 0 +++
[pid 14107] +++ exited with 0 +++
[pid 14105] +++ exited with 0 +++
[pid 14104] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14104, si_uid=1001, si_status=0, si_utime=0, si_stime=2} ---
strace: Process 14108 attached
[pid 14108] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14108, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14109 attached
strace: Process 14110 attached
strace: Process 14111 attached
[pid 14109] write(1, "2025-06-28", 10) = 10
[pid 14109] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14109, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14110] write(1, "930b4f62cfcd1f0eabdb30a56d91bf68"..., 41) = 41
[pid 14110] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14110, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14111] write(1, "930b4f62c\n", 10) = 10
[pid 14111] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14111, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14112 attached
[pid 14112] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14112, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14113 attached
strace: Process 14114 attached
strace: Process 14115 attached
[pid 14113] write(1, "2025-06-23", 10) = 10
[pid 14113] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14113, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14114] write(1, "b5098d515d5e1bd0f5470553bc0d18da"..., 41) = 41
[pid 14114] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14114, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14115] write(1, "b5098d515\n", 10) = 10
[pid 14115] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14115, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14116 attached
[pid 14116] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14116, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14117 attached
strace: Process 14118 attached
strace: Process 14119 attached
[pid 14117] write(1, "2025-06-13", 10) = 10
[pid 14117] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14117, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14118] write(1, "ed6566573eb21b00a3f87815e14ff766"..., 41) = 41
[pid 14118] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14118, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14119] write(1, "ed6566573\n", 10) = 10
[pid 14119] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14119, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14120 attached
[pid 14120] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14120, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14121 attached
strace: Process 14122 attached
strace: Process 14123 attached
[pid 14121] write(1, "2025-04-30", 10) = 10
[pid 14121] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14121, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14122] write(1, "04ce66d8c918de9273bd7101638ad872"..., 41) = 41
[pid 14122] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14122, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14123] write(1, "04ce66d8c\n", 10) = 10
[pid 14123] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14123, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14124 attached
[pid 14124] write(1, "fd9ca711a3a0e2bd5bd33a345fa44393"..., 41) = 41
[pid 14124] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14124, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14125 attached
strace: Process 14126 attached
strace: Process 14127 attached
[pid 14126] +++ exited with 0 +++
strace: Process 14128 attached
strace: Process 14129 attached
[pid 14128] +++ exited with 0 +++
[pid 14129] +++ exited with 0 +++
[pid 14127] +++ exited with 0 +++
strace: Process 14130 attached
strace: Process 14131 attached
[pid 14130] +++ exited with 0 +++
strace: Process 14132 attached
[pid 14131] +++ exited with 0 +++
[pid 14132] +++ exited with 0 +++
strace: Process 14133 attached
strace: Process 14134 attached
[pid 14133] +++ exited with 0 +++
strace: Process 14135 attached
[pid 14134] +++ exited with 0 +++
strace: Process 14136 attached
[pid 14135] +++ exited with 0 +++
strace: Process 14137 attached
[pid 14136] +++ exited with 0 +++
strace: Process 14138 attached
[pid 14137] +++ exited with 0 +++
[pid 14138] +++ exited with 0 +++
strace: Process 14139 attached
strace: Process 14140 attached
[pid 14139] +++ exited with 0 +++
strace: Process 14141 attached
[pid 14140] +++ exited with 0 +++
strace: Process 14142 attached
[pid 14141] +++ exited with 0 +++
strace: Process 14143 attached
[pid 14142] +++ exited with 0 +++
strace: Process 14144 attached
[pid 14143] +++ exited with 0 +++
strace: Process 14145 attached
[pid 14144] +++ exited with 0 +++
[pid 14145] +++ exited with 0 +++
strace: Process 14146 attached
strace: Process 14147 attached
strace: Process 14148 attached
strace: Process 14149 attached
strace: Process 14150 attached
strace: Process 14151 attached
strace: Process 14152 attached
strace: Process 14153 attached
strace: Process 14154 attached
strace: Process 14155 attached
strace: Process 14156 attached
strace: Process 14157 attached
strace: Process 14158 attached
strace: Process 14159 attached
strace: Process 14160 attached
strace: Process 14161 attached
strace: Process 14162 attached
strace: Process 14163 attached
strace: Process 14164 attached
strace: Process 14165 attached
strace: Process 14166 attached
[pid 14158] +++ exited with 0 +++
[pid 14160] +++ exited with 0 +++
[pid 14159] +++ exited with 0 +++
[pid 14161] +++ exited with 0 +++
[pid 14162] +++ exited with 0 +++
[pid 14163] +++ exited with 0 +++
[pid 14157] +++ exited with 0 +++
[pid 14152] +++ exited with 0 +++
[pid 14151] +++ exited with 0 +++
[pid 14148] +++ exited with 0 +++
[pid 14164] +++ exited with 0 +++
[pid 14150] +++ exited with 0 +++
[pid 14147] +++ exited with 0 +++
[pid 14155] +++ exited with 0 +++
[pid 14166] +++ exited with 0 +++
[pid 14153] +++ exited with 0 +++
[pid 14156] +++ exited with 0 +++
[pid 14154] +++ exited with 0 +++
[pid 14165] +++ exited with 0 +++
[pid 14149] +++ exited with 0 +++
[pid 14146] +++ exited with 0 +++
[pid 14125] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14146, si_uid=1001, si_status=0, si_utime=17, si_stime=215} ---
[pid 14125] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14125, si_uid=1001, si_status=0, si_utime=0, si_stime=1} ---
[pid 14098] write(3, "14098", 5) = 5
strace: Process 14167 attached
strace: Process 14168 attached
[pid 14167] write(6, "||||||||||||||||||||||||||||||||", 32) = 32
strace: Process 14169 attached
strace: Process 14170 attached
[pid 14169] write(1, "/checkout/obj/build/x86_64-unkno"..., 93) = 93
[pid 14169] +++ exited with 0 +++
[pid 14170] +++ exited with 0 +++
[pid 14168] +++ exited with 0 +++
[pid 14167] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14167, si_uid=1001, si_status=0, si_utime=0, si_stime=1} ---
strace: Process 14171 attached
strace: Process 14172 attached
[pid 14171] write(1, "rustc 1.89.0-beta.1 (390a0ab5d 2"..., 43) = 43
[pid 14171] write(1, "binary: rustc\n", 14) = 14
[pid 14171] write(1, "commit-hash: 390a0ab5dc4a895235a"..., 54) = 54
[pid 14171] write(1, "commit-date: 2025年06月23日\n", 24) = 24
[pid 14171] write(1, "host: x86_64-unknown-linux-gnu\n", 31) = 31
[pid 14171] write(1, "release: 1.89.0-beta.1\n", 23) = 23
[pid 14171] write(1, "LLVM version: 20.1.7\n", 21) = 21
[pid 14172] +++ exited with 0 +++
[pid 14171] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14171, si_uid=1001, si_status=0, si_utime=0, si_stime=1} ---
[pid 14098] write(4, "#ifdef __clang__\n#pragma message"..., 206) = 206
strace: Process 14173 attached
strace: Process 14174 attached
[pid 14174] write(1, "# 0 \"/tmp/15818296013513663150de"..., 304) = 304
[pid 14174] +++ exited with 0 +++
[pid 14173] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14174, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14173] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14173, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14175 attached
[pid 14175] write(2, "cc: error: unrecognized command-"..., 53) = 53
[pid 14175] write(2, "cc: fatal error: no input files\n", 32) = 32
[pid 14175] write(2, "compilation terminated.\n", 24) = 24
[pid 14175] +++ exited with 1 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14175, si_uid=1001, si_status=1, si_utime=0, si_stime=0} ---
[pid 14098] write(4, "#ifdef __clang__\n#pragma message"..., 206) = 206
strace: Process 14176 attached
strace: Process 14177 attached
[pid 14177] write(1, "# 0 \"/tmp/17034492984951169818de"..., 304) = 304
[pid 14177] +++ exited with 0 +++
[pid 14176] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14177, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14176] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14176, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
strace: Process 14178 attached
[pid 14178] write(2, "c++: error: unrecognized command"..., 54) = 54
[pid 14178] write(2, "c++: fatal error: no input files"..., 33) = 33
[pid 14178] write(2, "compilation terminated.\n", 24) = 24
[pid 14178] +++ exited with 1 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14178, si_uid=1001, si_status=1, si_utime=0, si_stime=0} ---
strace: Process 14179 attached
[pid 14179] write(1, "libstdc++ version: 11\n", 22) = 22
[pid 14179] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14179, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14098] write(1, "[TIMING] core::build_steps::tool"..., 98[TIMING] core::build_steps::tool::LibcxxVersionTool { target: x86_64-unknown-linux-gnu } -- 0.008
) = 98
strace: Process 14180 attached
strace: Process 14181 attached
[pid 14180] write(6, "||||||||||||||||||||||||||||||||", 32) = 32
strace: Process 14182 attached
strace: Process 14183 attached
[pid 14182] write(1, "aarch64-apple-darwin\naarch64-app"..., 7004) = 7004
[pid 14182] +++ exited with 0 +++
[pid 14183] +++ exited with 0 +++
[pid 14181] +++ exited with 0 +++
[pid 14180] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14180, si_uid=1001, si_status=0, si_utime=0, si_stime=2} ---
strace: Process 14184 attached
[pid 14184] write(1, "{\"packages\":[{\"name\":\"rustc-main"..., 389850) = 389850
[pid 14184] write(1, "\n", 1) = 1
[pid 14184] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14184, si_uid=1001, si_status=0, si_utime=2, si_stime=3} ---
strace: Process 14185 attached
[pid 14185] write(1, "{\"packages\":[{\"name\":\"std\",\"vers"..., 33762) = 33762
[pid 14185] write(1, "\n", 1) = 1
[pid 14185] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14185, si_uid=1001, si_status=0, si_utime=1, si_stime=0} ---
[pid 14098] write(1, "[TIMING] core::build_steps::comp"..., 170) = 170
[TIMING] core::build_steps::compile::Sysroot { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu, forced_compiler: false }, force_recompile: false } -- 0.005
[pid 14098] write(1, "[TIMING] core::builder::Libdir {"..., 166) = 166
[TIMING] core::builder::Libdir { compiler: Compiler { stage: 1, host: x86_64-unknown-linux-gnu, forced_compiler: false }, target: x86_64-unknown-linux-gnu } -- 0.000
strace: Process 14186 attached
[pid 14186] write(1, "20.1.7-rust-1.90.0-nightly\n", 27) = 27
[pid 14186] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14186, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14098] write(1, "[TIMING] core::build_steps::llvm"..., 85[TIMING] core::build_steps::llvm::Llvm { target: x86_64-unknown-linux-gnu } -- 0.014
) = 85
strace: Process 14187 attached
[pid 14187] write(1, "/checkout/obj/build/x86_64-unkno"..., 57) = 57
[pid 14187] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14187, si_uid=1001, si_status=0, si_utime=0, si_stime=0} ---
[pid 14098] write(2, "/checkout/obj/build/x86_64-unkno"..., 67/checkout/obj/build/x86_64-unknown-linux-gnu/ci-llvm/bin/llvm-strip) = 67
[pid 14098] write(2, " does not exist; skipping copy\n", 31 does not exist; skipping copy
) = 31
[pid 14098] write(1, "[TIMING] core::build_steps::comp"..., 154) = 154
[TIMING] core::build_steps::compile::Assemble { target_compiler: Compiler { stage: 0, host: x86_64-unknown-linux-gnu, forced_compiler: false } } -- 0.000
strace: Process 14188 attached
[pid 14188] write(1, "/checkout/obj/build/x86_64-unkno"..., 91) = 91
[pid 14188] +++ exited with 0 +++
[pid 14098] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14188, si_uid=1001, si_status=0, si_utime=0, si_stime=1} ---
[pid 14098] write(4, "INPUT(", 6) = 6
[pid 14098] write(4, "libLLVM.so.20.1-rust-1.90.0-nigh"..., 35) = 35
[pid 14098] write(4, ")\n", 2) = 2
[TIMING] core::build_steps::compile::Sysroot { compiler: Compiler { stage: 0, host: x86_64-unknown-linux-gnu, forced_compiler: false }, force_recompile: false } -- 0.032
[pid 14098] write(1, "[TIMING] core::build_steps::comp"..., 170) = 170
[pid 14098] write(4, "INPUT(", 6) = 6
[pid 14098] write(4, "libLLVM.so.20.1-rust-1.90.0-nigh"..., 35) = 35
[pid 14098] write(4, ")\n", 2) = 2
[TIMING] core::builder::Libdir { compiler: Compiler { stage: 0, host: x86_64-unknown-linux-gnu, forced_compiler: false }, target: x86_64-unknown-linux-gnu } -- 0.004
[pid 14098] write(1, "[TIMING] core::builder::Libdir {"..., 166) = 166
[pid 14098] write(1, "[TIMING] core::build_steps::comp"..., 312) = 312
[TIMING] core::build_steps::compile::StdLink { compiler: Compiler { stage: 0, host: x86_64-unknown-linux-gnu, forced_compiler: false }, target_compiler: Compiler { stage: 0, host: x86_64-unknown-linux-gnu, forced_compiler: false }, target: x86_64-unknown-linux-gnu, crates: [], force_recompile: false } -- 0.013
[pid 14098] write(1, "::group::Building compiler artif"..., 82) = 82
##[group]Building compiler artifacts (stage0 -> stage1, x86_64-unknown-linux-gnu)
strace: Process 14189 attached
[pid 14189] pwrite64(9, "0円0円0円0円0円0円0円0円0円0円0円0円\v356円311円T0円0円0円31円0円0円2円0円0円0円20円0円0円0円0円0円"..., 512, 0) = 512
[pid 14189] pwrite64(9, "0円0円0円20円", 4, 512) = 4
[pid 14189] pwrite64(9, "\r0円0円0円i1円10円0円17円341円17円272円17円224円17円q17円P17円)17円\n16円351円16円277円16円224円16円p16円L"..., 4096, 516) = 4096
[pid 14189] pwrite64(9, "\v356円317円301円", 4, 4612) = 4
[pid 14189] pwrite64(9, "0円0円0円17円", 4, 4616) = 4
[pid 14189] pwrite64(9, "\r0円0円0円l0円361円0円17円333円17円271円17円230円17円z17円T0174円17円26円16円370円16円332円16円270円16円226円16円w"..., 4096, 4620) = 4096
[pid 14189] pwrite64(9, "\v356円316円]", 4, 8716) = 4
[pid 14189] pwrite64(9, "0円0円0円23円", 4, 8720) = 4
[pid 14189] pwrite64(9, "\r0円0円0円`1円s0円17円317円17円255円17円212円17円i17円B17円!16円372円16円305円16円232円16円z16円X0164円"..., 4096, 8724) = 4096
[pid 14189] pwrite64(9, "\v356円317円204円", 4, 12820) = 4
[pid 14189] pwrite64(9, "0円0円0円24円", 4, 12824) = 4
[pid 14189] pwrite64(9, "\r0円0円0円202円1円35円0円17円336円17円272円17円230円17円u17円\\17円@17円&17円\v16円363円16円333円16円301円16円246円"..., 4096, 12828) = 4096
[pid 14189] pwrite64(9, "\v356円315円336円", 4, 16924) = 4
[pid 14189] pwrite64(9, "0円0円0円25円", 4, 16928) = 4
[pid 14189] pwrite64(9, "\r0円0円0円v1円3円0円17円336円17円271円17円231円17円z17円W0177円17円34円17円0円16円347円16円301円16円250円16円206円"..., 4096, 16932) = 4096
[pid 14189] pwrite64(9, "\v356円316円346円", 4, 21028) = 4
[pid 14189] pwrite64(9, "0円0円0円1円", 4, 21032) = 4
[pid 14189] pwrite64(9, "SQLite format 30円20円0円1円1円0円@ 0円0円0円\f0円0円0円31円"..., 4096, 21036) = 4096
[pid 14189] pwrite64(9, "\v356円313円267円", 4, 25132) = 4
[pid 14189] pwrite64(9, "331円325円5円371円 241円c327円0円0円0円6円", 12, 0) = 12
[pid 14189] pwrite64(6, "SQLite format 30円20円0円1円1円0円@ 0円0円0円\r0円0円0円31円"..., 4096, 0) = 4096
[pid 14189] pwrite64(6, "\r0円0円0円l0円361円0円17円333円17円271円17円230円17円z17円T0174円17円26円16円370円16円332円16円270円16円226円16円w"..., 4096, 57344) = 4096
[pid 14189] pwrite64(6, "\r0円0円0円i1円10円0円17円341円17円272円17円224円17円q17円P17円)17円\n16円351円16円277円16円224円16円p16円L"..., 4096, 61440) = 4096
[pid 14189] pwrite64(6, "\r0円0円0円`1円s0円17円317円17円255円17円212円17円i17円B17円!16円372円16円305円16円232円16円z16円X0164円"..., 4096, 73728) = 4096
[pid 14189] pwrite64(6, "\r0円0円0円202円1円35円0円17円336円17円272円17円230円17円u17円\\17円@17円&17円\v16円363円16円333円16円301円16円246円"..., 4096, 77824) = 4096
[pid 14189] pwrite64(6, "\r0円0円0円v1円3円0円17円336円17円271円17円231円17円z17円W0177円17円34円17円0円16円347円16円301円16円250円16円206円"..., 4096, 81920) = 4096
[pid 14189] write(9, "||||", 4) = 4
strace: Process 14190 attached
[pid 14189] write(2, "[RUSTC-TIMING] build_script_buil"..., 50[RUSTC-TIMING] build_script_build test:false 0.200) = 50
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 762) = 762
[pid 14189] write(1, "{\"reason\":\"build-script-executed"..., 311) = 311
[pid 14189] write(2, "[RUSTC-TIMING] unicode_ident tes"..., 45[RUSTC-TIMING] unicode_ident test:false 0.053) = 45
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 834) = 834
[pid 14189] write(2, "[RUSTC-TIMING] cfg_if test:false"..., 38[RUSTC-TIMING] cfg_if test:false 0.026) = 38
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 839) = 839
[pid 14189] write(2, "[RUSTC-TIMING] build_script_buil"..., 50[RUSTC-TIMING] build_script_build test:false 0.215) = 50
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 745) = 745
[pid 14189] write(2, "[RUSTC-TIMING] proc_macro2 test:"..., 43[RUSTC-TIMING] proc_macro2 test:false 0.561) = 43
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 844) = 844
[pid 14189] write(1, "{\"reason\":\"build-script-executed"..., 340) = 340
[pid 14189] write(2, "[RUSTC-TIMING] memchr test:false"..., 38[RUSTC-TIMING] memchr test:false 1.231) = 38
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 862) = 862
[pid 14189] write(2, "[RUSTC-TIMING] shlex test:false "..., 37[RUSTC-TIMING] shlex test:false 0.117) = 37
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 798) = 798
[pid 14189] write(2, "[RUSTC-TIMING] quote test:false "..., 37[RUSTC-TIMING] quote test:false 0.248) = 37
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 808) = 808
[pid 14189] write(2, "[RUSTC-TIMING] libc test:false 1"..., 36[RUSTC-TIMING] libc test:false 1.661) = 36
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 863) = 863
[pid 14189] write(2, "[RUSTC-TIMING] cc test:false 1.1"..., 34[RUSTC-TIMING] cc test:false 1.133) = 34
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 768) = 768
[pid 14189] write(2, "[RUSTC-TIMING] stable_deref_trai"..., 50[RUSTC-TIMING] stable_deref_trait test:false 0.031) = 50
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 934) = 934
[pid 14189] write(2, "[RUSTC-TIMING] syn test:false 3."..., 35[RUSTC-TIMING] syn test:false 3.819) = 35
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 892) = 892
[pid 14189] write(2, "[RUSTC-TIMING] smallvec test:fal"..., 40[RUSTC-TIMING] smallvec test:false 0.217) = 40
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 891) = 891
[pid 14189] write(2, "[RUSTC-TIMING] bitflags test:fal"..., 40[RUSTC-TIMING] bitflags test:false 0.337) = 40
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 856) = 856
[pid 14189] write(2, "[RUSTC-TIMING] foldhash test:fal"..., 40[RUSTC-TIMING] foldhash test:false 0.146) = 40
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 851) = 851
[pid 14189] write(2, "[RUSTC-TIMING] synstructure test"..., 44[RUSTC-TIMING] synstructure test:false 0.412) = 44
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 850) = 850
[pid 14189] write(2, "[RUSTC-TIMING] displaydoc test:f"..., 42[RUSTC-TIMING] displaydoc test:false 0.670) = 42
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 715) = 715
[pid 14189] write(2, "[RUSTC-TIMING] equivalent test:f"..., 42[RUSTC-TIMING] equivalent test:false 0.045) = 42
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 863) = 863
[pid 14189] write(2, "[RUSTC-TIMING] allocator_api2 te"..., 46[RUSTC-TIMING] allocator_api2 test:false 0.357) = 46
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 897) = 897
[pid 14189] write(2, "[RUSTC-TIMING] once_cell test:fa"..., 41[RUSTC-TIMING] once_cell test:false 0.165) = 41
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 890) = 890
[pid 14189] write(2, "[RUSTC-TIMING] hashbrown test:fa"..., 41[RUSTC-TIMING] hashbrown test:false 0.698) = 41
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 952) = 952
[pid 14189] write(2, "[RUSTC-TIMING] build_script_buil"..., 50[RUSTC-TIMING] build_script_build test:false 0.239) = 50
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 734) = 734
[pid 14189] write(2, "[RUSTC-TIMING] autocfg test:fals"..., 39[RUSTC-TIMING] autocfg test:false 0.231) = 39
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 795) = 795
[pid 14189] write(2, "[RUSTC-TIMING] indexmap test:fal"..., 40[RUSTC-TIMING] indexmap test:false 0.754) = 40
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 869) = 869
[pid 14189] write(2, "[RUSTC-TIMING] build_script_buil"..., 50[RUSTC-TIMING] build_script_build test:false 0.196) = 50
[pid 14189] write(2, "\n", 1
) = 1
[pid 14189] write(1, "{\"reason\":\"compiler-artifact\",\"p"..., 752) = 752
[pid 14189] write(1, "{\"reason\":\"build-script-executed"..., 314) = 314
[pid 14189] write(2, "[RUSTC-TIMING] build_script_buil"..., 50[RUSTC-TIMING] build_script_build test:false 0.256) = 50
[pid 14189] write(2, "\n", 1
At this point I'm fairly sure this is a kernel bug in the runner. Tests pass locally, the pwritev2 also happens in CI and doesn't return an error, meaning the flag should be supported.
Github engineer directed me to the the ubuntu bug tracker.
https://bugs.launchpad.net/ubuntu/+source/linux-azure-6.11/+bug/2117183
☔ The latest upstream changes (presumably #144692) made this pull request unmergeable. Please resolve the merge conflicts.
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the workaround only applies on kernels >= 6.9
fixes #140867