[rust] build on circleci looks broken (could not exec the linker `cc`)

[jankeromnes]

   Compiling syntax_ext v0.0.0 (file:///home/user/rust/src/libsyntax_ext)
error: could not exec the linker `cc`
  |
  = note: Cannot allocate memory (os error 12)
  = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/rustc-d162f1a13c8ef190.rustc0-20c527915fa1ef6087fc31cbe68d7f2f.rs.rcgu.o" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/rustc-d162f1a13c8ef190.rustc1-20c527915fa1ef6087fc31cbe68d7f2f.rs.rcgu.o" "-o" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/librustc-d162f1a13c8ef190.so" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/rustc-d162f1a13c8ef190.crate.metadata.rcgu.o" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/rustc-d162f1a13c8ef190.crate.allocator.rcgu.o" "-Wl,-z,relro,-z,now" "-Wl,-O1" "-nodefaultlibs" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/release/deps" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/build/backtrace-sys-340c7157c7761734/out/.libs" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/build/miniz-sys-bf90fe466cd4a9fa/out" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-l" "test-902559d4a0cc83d5" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-l" "term-36880752958d2c6f" "-Wl,-Bstatic" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/libflate2-75c9cc82bb755b48.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/libminiz_sys-3d17c9d844239fa3.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/libbacktrace-786cb2b6a87aed68.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/libbacktrace_sys-60501d5f3e4fb8f6.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/librustc_demangle-ffb675b42151a6f8.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/libbyteorder-f652c706c62d3d96.rlib" "-Wl,--no-whole-archive" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-Wl,-Bdynamic" "-l" "proc_macro-50a63500c1ea1d55" "-Wl,-Bstatic" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/libjobserver-5189829dca651532.rlib" "-Wl,--no-whole-archive" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-Wl,-Bdynamic" "-l" "rustc_const_math-b2c60d57ea59ca96" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "rustc_back-a514fb34c8a54105" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "syntax-915450af937848b5" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "rustc_errors-d6070e053e9037b0" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "syntax_pos-e425942a0298756c" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "rustc_data_structures-9ce9b8b9893796c6" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "serialize-b63c42e100577192" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "rustc_cratesio_shim-45d3d77a26fe81d5" "-Wl,-Bstatic" "-Wl,--whole-archive" "/tmp/rustc.QojTkMt8k6hB/liblazy_static-d0629a75f2783580.rlib" "-Wl,--no-whole-archive" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-Wl,-Bdynamic" "-l" "graphviz-06bb7008d45cdff0" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "fmt_macros-7fa0522df5af949a" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps" "-l" "arena-657cf6916cd0a947" "-Wl,--start-group" "-L" "/home/user/rust/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-l" "std-cd2b5f523b8e9a00" "-Wl,--end-group" "-Wl,-Bstatic" "/tmp/rustc.QojTkMt8k6hB/libcompiler_builtins-825ad861341732a3.rlib" "-Wl,-Bdynamic" "-l" "util" "-l" "util" "-l" "dl" "-l" "rt" "-l" "pthread" "-l" "pthread" "-l" "gcc_s" "-l" "c" "-l" "m" "-l" "rt" "-l" "pthread" "-l" "util" "-l" "util" "-shared" "-Wl,-rpath,$ORIGIN/../lib"

error: aborting due to previous error

error: Could not compile `rustc`.

Caused by:
  process didn't exit successfully: `/home/user/rust/build/bootstrap/debug/rustc --crate-name rustc librustc/lib.rs --error-format json --crate-type dylib --emit=dep-info,link -C prefer-dynamic -C opt-level=2 -C metadata=d162f1a13c8ef190 -C extra-filename=-d162f1a13c8ef190 --out-dir /home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps --target x86_64-unknown-linux-gnu -L dependency=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/release/deps --extern rustc_const_math=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_const_math-b2c60d57ea59ca96.so --extern byteorder=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libbyteorder-f652c706c62d3d96.rlib --extern lazy_static=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/liblazy_static-d0629a75f2783580.rlib --extern rustc_back=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_back-a514fb34c8a54105.so --extern rustc_apfloat=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_apfloat-368954353a9eb5ee.rlib --extern fmt_macros=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libfmt_macros-7fa0522df5af949a.so --extern log=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/liblog-19a330a6ee3947d3.rlib --extern tempdir=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libtempdir-0e817088ca3fbdbd.rlib --extern proc_macro=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libproc_macro-50a63500c1ea1d55.so --extern rustc_errors=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_errors-d6070e053e9037b0.so --extern flate2=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libflate2-75c9cc82bb755b48.rlib --extern bitflags=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libbitflags-fd8a318e919a8b90.rlib --extern jobserver=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libjobserver-5189829dca651532.rlib --extern backtrace=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libbacktrace-786cb2b6a87aed68.rlib --extern syntax=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libsyntax-915450af937848b5.so --extern arena=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libarena-657cf6916cd0a947.so --extern graphviz=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libgraphviz-06bb7008d45cdff0.so --extern syntax_pos=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libsyntax_pos-e425942a0298756c.so --extern serialize=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libserialize-b63c42e100577192.so --extern serialize=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/libserialize-b63c42e100577192.rlib --extern rustc_data_structures=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_data_structures-9ce9b8b9893796c6.so -L native=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/build/backtrace-sys-340c7157c7761734/out/.libs -L native=/home/user/rust/build/x86_64-unknown-linux-gnu/stage1-rustc/x86_64-unknown-linux-gnu/release/build/miniz-sys-bf90fe466cd4a9fa/out` (exit code: 101)
command did not execute successfully: "/home/user/rust/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-linux-gnu" "-j" "2" "--release" "--features" " jemalloc" "--manifest-path" "/home/user/rust/src/rustc/Cargo.toml" "--message-format" "json"
expected success, got: exit code: 101
thread 'main' panicked at 'cargo must succeed', bootstrap/compile.rs:1085:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.
failed to run: /home/user/rust/build/bootstrap/debug/bootstrap build
Build completed unsuccessfully in 2:09:37
The command '/bin/sh -c ./x.py build' returned a non-zero code: 1
Exited with code 1

[jankeromnes]

@ishitatsuyuki I tried re-triggering this twice, without success. Do you know more about this issue?

[ishitatsuyuki]

Fixed upstream (https://github.com/rust-lang/rust/issues/50073).