`tests/ui/meta/revision-bad.rs#foo` test failure on `master`

Hey there! I'm experiencing a weird issue where the tests/ui/meta/revision-bad.rs#foo test fails on the latest master branch commit when I run ./x test. The issue has occurred for me since at least 1b6d674 and still occurs now (e6eb451).

barrett@farts ~/D/p/c/rust (master)> ./x test tests/ui/meta/revision-bad.rs --verbose
# (snip)
running 2 tests
test [ui] tests/ui/meta/revision-bad.rs#bar ... ok
test [ui] tests/ui/meta/revision-bad.rs#foo ... FAILED

failures:

---- [ui] tests/ui/meta/revision-bad.rs#foo stdout ----

executing env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" "/home/barrett/Documents/projects/contributions/rust/tests/ui/meta/revision-bad.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/barrett/.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/home/barrett/Documents/projects/contributions/rust/vendor" "--sysroot" "/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/stage1" "--target=x86_64-unknown-linux-gnu" "--cfg" "foo" "--check-cfg" "cfg(FALSE,foo,bar)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "-o" "/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/test/ui/meta/revision-bad.foo/a" "-A" "unused" "-A" "internal_features" "-Crpath" "-Cdebuginfo=0" "-Lnative=/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/test/ui/meta/revision-bad.foo/auxiliary"
------stdout------------------------------

------stderr------------------------------

------------------------------------------
executing cd "/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/test/ui/meta/revision-bad.foo" && RUSTC="/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/stage1/bin/rustc" RUST_TEST_THREADS="16" "/home/barrett/Documents/projects/contributions/rust/build/x86_64-unknown-linux-gnu/test/ui/meta/revision-bad.foo/a"
------stdout------------------------------

------stderr------------------------------
thread 'main' panicked at /home/barrett/Documents/projects/contributions/rust/tests/ui/meta/revision-bad.rs:13:5:
foo
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

------------------------------------------

NOTE: test did not panic as expected

failures:
    [ui] tests/ui/meta/revision-bad.rs#foo

test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 17696 filtered out; finished in 206.56ms

Here are the logs:

Trimmed: https://paste.ee/p/ZwD2q
Full: https://paste.ee/p/z8Vnq

It feels like the test harness is failing to detect the panic - you can see in stderr that the panic occurs as expected, but the test asserts that it didn't! Oddly enough, revision-bad.rs#bar is detected correctly.

rustc --version --verbose


barrett@farts ~/D/p/c/rust (master)> rustc +stage0 --version --verbose
rustc 1.82.0-beta.4 (8c27a2ba6 2024-09-21)
binary: rustc
commit-hash: 8c27a2ba6b21f3406a51118643080f0591949827
commit-date: 2024-09-21
host: x86_64-unknown-linux-gnu
release: 1.82.0-beta.4
LLVM version: 19.1.0

barrett@farts ~/D/p/c/rust (master)> rustc +stage1 --version --verbose
rustc 1.83.0-dev
binary: rustc
commit-hash: unknown
commit-date: unknown
host: x86_64-unknown-linux-gnu
release: 1.83.0-dev
LLVM version: 19.1.0

System info

set -L


barrett@farts ~/D/p/c/rust (master)> set -L
BLACKBOX_THEMES_DIR /home/barrett/.var/app/com.raggesilver.BlackBox/data/blackbox/schemes
CMD_DURATION 15
COLORTERM truecolor
COLUMNS 312
CONDA_EXE /usr/bin/conda
CONDA_PYTHON_EXE /usr/bin/python3
CONDA_SHLVL 0
DBUS_SESSION_BUS_ADDRESS unix:path=/run/user/1000/bus
DESKTOP_SESSION gnome
DISPLAY :0
EDITOR micro
ELECTRON_OZONE_PLATFORM_HINT auto
EUID 1000
FISH_VERSION 3.7.0
FPATH /usr/share/lmod/lmod/init/ksh_funcs
GDMSESSION gnome
GDM_LANG en_US.UTF-8
GNOME_SETUP_DISPLAY :1
HOME /home/barrett
IFS \n\ \t
INVOCATION_ID 2d68f2bd14764060acf6609cc5722f95
JOURNAL_STREAM 9:37990
LANG en_US.UTF-8
LINES 62
LMOD_CMD /usr/share/lmod/lmod/libexec/lmod
LMOD_DIR /usr/share/lmod/lmod/libexec
LMOD_PKG /usr/share/lmod/lmod
LMOD_ROOT /usr/share/lmod
LMOD_VERSION 8.7.48
LOGNAME barrett
MANAGERPID 3389
MEMORY_PRESSURE_WATCH /sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/flatpak-session-helper.service/memory.pressure
MEMORY_PRESSURE_WRITE c29tZSAyMDAwMDAgMjAwMDAwMAA=
MODULESHOME /usr/share/lmod/lmod
MOZ_GMP_PATH /usr/lib64/mozilla/plugins/gmp-gmpopenh264/system-installed
PATH '/home/barrett/bin'  '/home/barrett/go/bin'  '/home/barrett/.local/bin'  '/home/barrett/.cargo/bin'  '/usr/condabin'  '/usr/local/bin'  '/usr/local/sbin'  '/usr/bin'  '/usr/sbin'
PKG_CONFIG_PATH /usr/lib64/pkgconfig/
PWD /home/barrett/Documents/projects/contributions/rust
QT_IM_MODULE ibus
SESSION_MANAGER local/unix:@/tmp/.ICE-unix/3587,unix/unix:/tmp/.ICE-unix/3587
SHELL /usr/bin/fish
SHLVL 1
SSH_AUTH_SOCK /run/user/1000/keyring/ssh
SYSTEMD_EXEC_PID 4670
TERM xterm-256color
TERM_PROGRAM BlackBox
USER barrett
USERNAME barrett
VTE_VERSION 7300
WAYLAND_DISPLAY wayland-0
XAUTHORITY /run/user/1000/.mutter-Xwaylandauth.9RJQU2
XDG_CURRENT_DESKTOP GNOME
XDG_DATA_DIRS '/home/barrett/.local/share/flatpak/exports/share'  '/var/lib/flatpak/exports/share'  '/usr/local/share/'  '/usr/share/'
XDG_MENU_PREFIX gnome-
XDG_RUNTIME_DIR /run/user/1000
XDG_SESSION_CLASS user
XDG_SESSION_DESKTOP gnome
XDG_SESSION_TYPE wayland
XMODIFIERS @im=ibus
_ set
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___fish_git_prompt_char_upstream_diverged '<>'
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__fish_bin_dir /usr/bin
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__fish_config_dir /home/barrett/.config/fish
__fish_data_dir /usr/share/fish
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__fish_help_dir /usr/share/doc/fish
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__fish_last_bind_mode default
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__fish_sysconf_dir /etc/fish
__fish_user_data_dir /home/barrett/.local/share/fish
__fish_vendor_completionsdirs '/home/barrett/.local/share/fish/vendor_completions.d'  '/home/barrett/.local/share/flatpak/exports/share/fish/vendor_completions.d'  '/var/lib/flatpak/exports/share/fish/vendor_completions.d'  '/usr/local/share/fish/vendor_completions.d'  '/usr/share/fish/vendor_completions.d'
__fish_vendor_confdirs '/home/barrett/.local/share/fish/vendor_conf.d'  '/home/barrett/.local/share/flatpak/exports/share/fish/vendor_conf.d'  '/var/lib/flatpak/exports/share/fish/vendor_conf.d'  '/usr/local/share/fish/vendor_conf.d'  '/usr/share/fish/vendor_conf.d'
__fish_vendor_functionsdirs '/home/barrett/.local/share/fish/vendor_functions.d'  '/home/barrett/.local/share/flatpak/exports/share/fish/vendor_functions.d'  '/var/lib/flatpak/exports/share/fish/vendor_functions.d'  '/usr/local/share/fish/vendor_functions.d'  '/usr/share/fish/vendor_functions.d'
__kill_signals '1 HUP'  '2 INT'  '3 QUIT'  '4 ILL'  '5 TRAP'  '6 ABRT'  '6 IOT'  '7 BUS'  '8 FPE'  '9 KILL'  '10 USR1'  '11 SEGV'  '12 USR2'  '13 PIPE'  '14 ALRM'  '15 TERM'  '16 STKFLT'  '17 CHLD'  '17 CLD'  '18 CONT'  '19 STOP'  '20 TSTP'  '21 TTIN'  '22 TTOU'  '23 URG'  '24 XCPU'  '25 XFSZ'  '26 VTALRM'  '27 PROF'  '28 WINCH'  '29 IO'  '29 POLL'  '30 PWR'  '31 SYS'  '34 RTMIN'  '64 RTMAX'
dirprev '/home/barrett'  '/home/barrett/Documents'  '/home/barrett/Documents/projects'  '/home/barrett/Documents/projects/contributions'  '/home/barrett/Documents/projects/contributions/rust'  '/home/barrett/Documents/projects/contributions/rust/build'  '/home/barrett/Documents/projects/contributions/rust'  '/home/barrett/Documents/projects/contributions/rust/build'
fish_bind_mode default
fish_color_autosuggestion '555'  'brblack'
fish_color_cancel -r
fish_color_command blue
fish_color_comment red
fish_color_cwd green
fish_color_cwd_root red
fish_color_end green
fish_color_error brred
fish_color_escape brcyan
fish_color_hg_added green
fish_color_hg_clean green
fish_color_hg_copied magenta
fish_color_hg_deleted red
fish_color_hg_dirty red
fish_color_hg_modified yellow
fish_color_hg_renamed magenta
fish_color_hg_unmerged red
fish_color_hg_untracked yellow
fish_color_history_current --bold
fish_color_host normal
fish_color_host_remote yellow
fish_color_normal normal
fish_color_operator brcyan
fish_color_param cyan
fish_color_quote yellow
fish_color_redirection 'cyan'  '--bold'
fish_color_search_match --background=111
fish_color_selection 'white'  '--bold'  '--background=brblack'
fish_color_status red
fish_color_user brgreen
fish_color_valid_path --underline
fish_complete_path '/home/barrett/.config/fish/completions'  '/etc/fish/completions'  '/home/barrett/.local/share/fish/vendor_completions.d'  '/home/barrett/.local/share/flatpak/exports/share/fish/vendor_completions.d'  '/var/lib/flatpak/exports/share/fish/vendor_completions.d'  '/usr/local/share/fish/vendor_completions.d'  '/usr/share/fish/vendor_completions.d'  '/usr/share/fish/completions'  '/home/barrett/.local/share/fish/generated_completions'
fish_function_path '/home/barrett/.config/fish/functions'  '/etc/fish/functions'  '/home/barrett/.local/share/fish/vendor_functions.d'  '/home/barrett/.local/share/flatpak/exports/share/fish/vendor_functions.d'  '/var/lib/flatpak/exports/share/fish/vendor_functions.d'  '/usr/local/share/fish/vendor_functions.d'  '/usr/share/fish/vendor_functions.d'  '/usr/share/fish/functions'
fish_greeting Welcome\ to\ fish,\ the\ friendly\ interactive\ shell\nType\ \e\[32mhelp\e\(B\e\[m\ for\ instructions\ on\ how\ to\ use\ fish
fish_handle_reflow 0
fish_key_bindings fish_default_key_bindings
fish_kill_signal 0
fish_killring 'meta/revision-bad'  'cargo-'  'fmt '  ' /home/barrett/Android/Sdk/ndk/27.1.12297006/toolchains/llvm/prebuilt/linux-x86_64/bin'  'home/barrett/Android/Sdk/emulator /home/barrett/.local/share/flutter_sdk/flutter/bin /home/barrett/.local/share/flutter_sdk/flutter /home/barrett/bin/android-studio/bin '  'home/barrett/.surrealdb'  ' /home/barrett/.rye/shims'  ' /home/linuxbrew/.linuxbrew/bin'  '-help'  '-verbos'  'library'  'check libra'  'build lib'
fish_pager_color_completion normal
fish_pager_color_description 'B3A06D'  'yellow'  '-i'
fish_pager_color_prefix 'cyan'  '--bold'  '--underline'
fish_pager_color_progress 'brwhite'  '--background=cyan'
fish_pager_color_selected_background -r
fish_pid 471878
fish_prompt_hg_status_added ✚
fish_prompt_hg_status_copied ⇒
fish_prompt_hg_status_deleted ✖
fish_prompt_hg_status_modified '*'
fish_prompt_hg_status_order 'added'  'modified'  'copied'  'deleted'  'untracked'  'unmerged'
fish_prompt_hg_status_unmerged !
fish_prompt_hg_status_untracked '?'
fish_user_paths '/home/barrett/Android/Sdk/ndk/27.1.12297006/toolchains/llvm/prebuilt/linux-x86_64/bin'  '/home/barrett/Android/Sdk/emulator'  '/home/barrett/.local/share/flutter_sdk/flutter/bin'  '/home/barrett/.local/share/flutter_sdk/flutter'  '/home/barrett/bin/android-studio/bin'  '/home/barrett/.surrealdb'  '/home/barrett/bin'  '/home/barrett/.rye/shims'  '/home/barrett/go/bin'  '/home/linuxbrew/.linuxbrew/bin'  '/home/barrett/.local/bin'  '/home/barrett/.cargo/bin'
history # (snip! veeeery long)
hostname farts
last_pid 2083778
pipestatus 0
status 0
status_generation 103
umask 0022
version 3.7.0
barrett@farts ~/D/p/c/rust (master)>

rust-lang / rust

`tests/ui/meta/revision-bad.rs#foo` test failure on `master` #130996