Error message from Rust build from source

error.txt

error: Could not compile `rustc`.

Caused by:
process didn't exit successfully: `/home/jen/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=f81250751e0ebed7 -C extra-filename=-f81250751e0ebed7 --out-dir /home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps --target x86_64-unknown-linux-gnu -L dependency=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps -L dependency=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/release/deps --extern tempfile=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libtempfile-e2afe7409f33879a.rlib --extern jobserver=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libjobserver-e8a1df2f3ad631bc.rlib --extern rustc_rayon_core=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_rayon_core-6f8a066c77c355d9.rlib --extern polonius_engine=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libpolonius_engine-6e0be5cf77966185.rlib --extern parking_lot=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libparking_lot-210745eb40d9c073.rlib --extern chalk_engine=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libchalk_engine-dc5a2a01279da0f2.rlib --extern rustc_rayon=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_rayon-dc5c45209eae7e7b.rlib --extern arena=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libarena-ccde2368d50449de.so --extern log=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/liblog-5073f1296cd24b67.rlib --extern proc_macro=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libproc_macro-524e4d04204f0089.so --extern rustc_errors=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_errors-c9d6678b1c0f0b46.so --extern backtrace=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libbacktrace-f3a2fb1d767a0bf7.rlib --extern bitflags=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libbitflags-99b4534960f92449.rlib --extern rustc_data_structures=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_data_structures-a7df2fc298b4fb06.so --extern rustc_target=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_target-58741ed9de9aae4f.so --extern syntax_pos=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libsyntax_pos-670f6bac60d99b34.so --extern byteorder=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libbyteorder-78ebc049d4f53f46.rlib --extern fmt_macros=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libfmt_macros-a1ad98118554e7d4.so --extern scoped_tls=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libscoped_tls-b76c070114255d98.rlib --extern serialize=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libserialize-5d0a8a65bb9fe29f.so --extern serialize=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libserialize-5d0a8a65bb9fe29f.rlib --extern syntax=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libsyntax-6a2f0731783c2bd3.so --extern lazy_static=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/liblazy_static-96c042dcc29a7e10.rlib --extern flate2=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libflate2-5eb12204825df3be.rlib --extern rustc_apfloat=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/librustc_apfloat-642a7efe79e24835.rlib --extern graphviz=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/deps/libgraphviz-be994de8b3050feb.so -L native=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/build/backtrace-sys-88673787176f9d86/out -L native=/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0-rustc/x86_64-unknown-linux-gnu/release/build/miniz-sys-62d80197b9ec531e/out` (signal: 9, SIGKILL: kill)
command did not execute successfully: "/home/jen/rust/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-linux-gnu" "-j" "1" "--release" "--features" " jemalloc" "--manifest-path" "/home/jen/rust/src/rustc/Cargo.toml" "--message-format" "json"
expected success, got: exit code: 101
thread 'main' panicked at 'cargo must succeed', bootstrap/compile.rs:1091:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.
failed to run: /home/jen/rust/build/bootstrap/debug/bootstrap build
Build completed unsuccessfully in 0:12:54