[INFO] crate dargo 0.0.6 is already in cache
[INFO] extracting crate dargo 0.0.6 into work/ex/beta-1.38-1/sources/1.37.0/reg/dargo/0.0.6
[INFO] extracting crate dargo 0.0.6 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dargo/0.0.6
[INFO] validating manifest of dargo-0.0.6 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dargo-0.0.6 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dargo-0.0.6
[INFO] finished frobbing dargo-0.0.6
[INFO] frobbed toml for dargo-0.0.6 written to work/ex/beta-1.38-1/sources/1.37.0/reg/dargo/0.0.6/Cargo.toml
[INFO] started frobbing dargo-0.0.6
[INFO] finished frobbing dargo-0.0.6
[INFO] frobbed toml for dargo-0.0.6 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dargo/0.0.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dargo-0.0.6 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dargo/0.0.6:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 54bc0ebc061e4a44039cf52b5ff1b8af26284007218fecc991dd76fad71984bd
[INFO] running `"docker" "start" "-a" "54bc0ebc061e4a44039cf52b5ff1b8af26284007218fecc991dd76fad71984bd"`
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling tabwriter v1.1.0
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling flate2 v1.0.11
[INFO] [stderr]    Compiling http v0.1.18
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling flexi_logger v0.13.4
[INFO] [stderr]    Compiling im-rc v12.3.4
[INFO] [stderr]    Compiling winconsole v0.10.0
[INFO] [stderr]    Compiling colored v1.8.0
[INFO] [stderr]    Compiling crates-io v0.24.0
[INFO] [stderr]    Compiling git2-curl v0.9.0
[INFO] [stderr]    Compiling cargo v0.36.0
[INFO] [stderr]    Compiling toml_edit v0.1.5
[INFO] [stderr] error: Could not compile `cargo`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name cargo /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.36.0/src/cargo/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=39f23f1cd37bd2ea -C extra-filename=-39f23f1cd37bd2ea --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern atty=/opt/crater/target/debug/deps/libatty-22eb3b2ac1d714c2.rmeta --extern byteorder=/opt/crater/target/debug/deps/libbyteorder-98f71e4258b709b0.rmeta --extern bytesize=/opt/crater/target/debug/deps/libbytesize-55f2f37ee6956707.rmeta --extern clap=/opt/crater/target/debug/deps/libclap-946176546f1bfef1.rmeta --extern crates_io=/opt/crater/target/debug/deps/libcrates_io-77218db0a06f1f5d.rmeta --extern crossbeam_utils=/opt/crater/target/debug/deps/libcrossbeam_utils-e32b73b6a212c837.rmeta --extern crypto_hash=/opt/crater/target/debug/deps/libcrypto_hash-4fdbe13694f58f5b.rmeta --extern curl=/opt/crater/target/debug/deps/libcurl-8c394de2bacd8133.rmeta --extern curl_sys=/opt/crater/target/debug/deps/libcurl_sys-804c07680e0e9c08.rmeta --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-60ee7903c4014a8e.rmeta --extern failure=/opt/crater/target/debug/deps/libfailure-e533f5339fa6fa33.rmeta --extern filetime=/opt/crater/target/debug/deps/libfiletime-541a240515dc1495.rmeta --extern flate2=/opt/crater/target/debug/deps/libflate2-436b925ae3db9c00.rmeta --extern fs2=/opt/crater/target/debug/deps/libfs2-3b1d34a5cbd1c69c.rmeta --extern git2=/opt/crater/target/debug/deps/libgit2-db38f6e52934c4cd.rmeta --extern git2_curl=/opt/crater/target/debug/deps/libgit2_curl-dafecae42149245b.rmeta --extern glob=/opt/crater/target/debug/deps/libglob-1302d9689d3a3dcc.rmeta --extern hex=/opt/crater/target/debug/deps/libhex-cfcedefda878ea76.rmeta --extern home=/opt/crater/target/debug/deps/libhome-72d55d179abfe9be.rmeta --extern ignore=/opt/crater/target/debug/deps/libignore-b7b1ffe992da0df5.rmeta --extern im_rc=/opt/crater/target/debug/deps/libim_rc-1a72b77c9c591289.rmeta --extern jobserver=/opt/crater/target/debug/deps/libjobserver-1527d86dfe4360d7.rmeta --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rmeta --extern lazycell=/opt/crater/target/debug/deps/liblazycell-45116a8946ed0c92.rmeta --extern libc=/opt/crater/target/debug/deps/liblibc-37f3d1c853b3b7bd.rmeta --extern libgit2_sys=/opt/crater/target/debug/deps/liblibgit2_sys-18fd227838194117.rmeta --extern log=/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rmeta --extern num_cpus=/opt/crater/target/debug/deps/libnum_cpus-b569161181e0c021.rmeta --extern opener=/opt/crater/target/debug/deps/libopener-ce69e756e250ad74.rmeta --extern rustc_workspace_hack=/opt/crater/target/debug/deps/librustc_workspace_hack-668375e19551eb59.rmeta --extern rustfix=/opt/crater/target/debug/deps/librustfix-8240ee5972b31472.rmeta --extern same_file=/opt/crater/target/debug/deps/libsame_file-8268c7efcedb46b2.rmeta --extern semver=/opt/crater/target/debug/deps/libsemver-38e27790bed68de9.rmeta --extern serde=/opt/crater/target/debug/deps/libserde-50e5d46514dccf4f.rmeta --extern serde_ignored=/opt/crater/target/debug/deps/libserde_ignored-bbd5b6c45e195b67.rmeta --extern serde_json=/opt/crater/target/debug/deps/libserde_json-ce8632578aa437dc.rmeta --extern shell_escape=/opt/crater/target/debug/deps/libshell_escape-0eeb9559bd1e3eeb.rmeta --extern tar=/opt/crater/target/debug/deps/libtar-17fdfeb5f9d290db.rmeta --extern tempfile=/opt/crater/target/debug/deps/libtempfile-b29d5749da4bbd9d.rmeta --extern termcolor=/opt/crater/target/debug/deps/libtermcolor-79496754b4470ebc.rmeta --extern toml=/opt/crater/target/debug/deps/libtoml-913dd0f338a50ec8.rmeta --extern unicode_width=/opt/crater/target/debug/deps/libunicode_width-c482f247a0e67224.rmeta --extern url=/opt/crater/target/debug/deps/liburl-ee604ccef16e6499.rmeta --extern url_serde=/opt/crater/target/debug/deps/liburl_serde-22c75edcddac01f7.rmeta --extern walkdir=/opt/crater/target/debug/deps/libwalkdir-cfb6377a04f8e7b5.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/crater/target/debug/build/curl-sys-99a5e6ac4697acb6/out/build -L native=/opt/crater/target/debug/build/libnghttp2-sys-19169024ac48b7bd/out/i/lib -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out -L native=/opt/crater/target/debug/build/miniz-sys-e6b91e84307dae80/out -L native=/opt/crater/target/debug/build/libgit2-sys-6b026814d1fa6c1b/out/build -L native=/opt/crater/target/debug/build/libssh2-sys-ee7b9e477f1eab95/out/build` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "54bc0ebc061e4a44039cf52b5ff1b8af26284007218fecc991dd76fad71984bd"`
[INFO] running `"docker" "rm" "-f" "54bc0ebc061e4a44039cf52b5ff1b8af26284007218fecc991dd76fad71984bd"`
[INFO] [stdout] 54bc0ebc061e4a44039cf52b5ff1b8af26284007218fecc991dd76fad71984bd