[INFO] fetching crate cargo 0.37.0...
[INFO] extracting crate cargo 0.37.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/cargo/0.37.0
[INFO] extracting crate cargo 0.37.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo/0.37.0
[INFO] validating manifest of cargo-0.37.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cargo-0.37.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cargo-0.37.0
[INFO] finished frobbing cargo-0.37.0
[INFO] frobbed toml for cargo-0.37.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/cargo/0.37.0/Cargo.toml
[INFO] started frobbing cargo-0.37.0
[INFO] finished frobbing cargo-0.37.0
[INFO] frobbed toml for cargo-0.37.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo/0.37.0/Cargo.toml
[INFO] crate cargo-0.37.0 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cargo-0.37.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/cargo/0.37.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ca8093b193cbd22364f9d41bb44565b27a5d35044f60c9992969cf72f68e0e88
[INFO] running `"docker" "start" "-a" "ca8093b193cbd22364f9d41bb44565b27a5d35044f60c9992969cf72f68e0e88"`
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling opener v0.4.0
[INFO] [stderr]    Compiling backtrace v0.3.30
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.1
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.18
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling socket2 v0.3.9
[INFO] [stderr]    Compiling filetime v0.2.6
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling bstr v0.1.4
[INFO] [stderr]    Compiling sized-chunks v0.1.3
[INFO] [stderr]    Compiling jobserver v0.1.13
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling crypto-hash v0.3.3
[INFO] [stderr]    Compiling http v0.1.17
[INFO] [stderr]    Compiling globset v0.4.3
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]    Compiling flate2 v1.0.7
[INFO] [stderr]    Compiling tempfile v3.0.8
[INFO] [stderr]    Compiling ignore v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling curl v0.4.22
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling toml v0.5.1
[INFO] [stderr]    Compiling serde_ignored v0.0.4
[INFO] [stderr]    Compiling url_serde v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling im-rc v12.3.4
[INFO] [stderr]    Compiling rustfix v0.4.5
[INFO] [stderr]    Compiling crates-io v0.25.0
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling git2-curl v0.9.0
[INFO] [stderr]    Compiling cargo v0.37.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 38s
[INFO] running `"docker" "inspect" "ca8093b193cbd22364f9d41bb44565b27a5d35044f60c9992969cf72f68e0e88"`
[INFO] running `"docker" "rm" "-f" "ca8093b193cbd22364f9d41bb44565b27a5d35044f60c9992969cf72f68e0e88"`
[INFO] [stdout] ca8093b193cbd22364f9d41bb44565b27a5d35044f60c9992969cf72f68e0e88
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/cargo/0.37.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 65524b0bfe8b43376ec0954a1dc13b85e7fbb901579bb36a761587faaaaa2d52
[INFO] running `"docker" "start" "-a" "65524b0bfe8b43376ec0954a1dc13b85e7fbb901579bb36a761587faaaaa2d52"`
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling bufstream v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling proptest v0.9.4
[INFO] [stderr]    Compiling cargo v0.37.0 (/opt/crater/workdir)
[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 testsuite tests/testsuite/main.rs --color never --emit=dep-info,link -C debuginfo=2 --test -C metadata=92db1a4a2013f7af -C extra-filename=-92db1a4a2013f7af --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern atty=/opt/crater/target/debug/deps/libatty-8ae22126a92705fb.rlib --extern bufstream=/opt/crater/target/debug/deps/libbufstream-1d78d904548399b6.rlib --extern byteorder=/opt/crater/target/debug/deps/libbyteorder-1ca0e27fd3a97256.rlib --extern bytesize=/opt/crater/target/debug/deps/libbytesize-341fd1fa261b76db.rlib --extern cargo=/opt/crater/target/debug/deps/libcargo-925ec816a55cc0af.rlib --extern clap=/opt/crater/target/debug/deps/libclap-937f4d05d565c485.rlib --extern crates_io=/opt/crater/target/debug/deps/libcrates_io-8d1211738145a6c9.rlib --extern crossbeam_utils=/opt/crater/target/debug/deps/libcrossbeam_utils-bb2b9a56b4930d42.rlib --extern crypto_hash=/opt/crater/target/debug/deps/libcrypto_hash-267bc8db6230b342.rlib --extern curl=/opt/crater/target/debug/deps/libcurl-96d41e4af78eb4e1.rlib --extern curl_sys=/opt/crater/target/debug/deps/libcurl_sys-1eb1f8f51acf7107.rlib --extern env_logger=/opt/crater/target/debug/deps/libenv_logger-e2c2a14ac7bd4dbf.rlib --extern failure=/opt/crater/target/debug/deps/libfailure-26dc145d4c5bb9d0.rlib --extern filetime=/opt/crater/target/debug/deps/libfiletime-29c3efc1f8640217.rlib --extern flate2=/opt/crater/target/debug/deps/libflate2-0d8f53f9497b414e.rlib --extern fs2=/opt/crater/target/debug/deps/libfs2-20bd7c7b4683f454.rlib --extern git2=/opt/crater/target/debug/deps/libgit2-cf903f93a8a37771.rlib --extern git2_curl=/opt/crater/target/debug/deps/libgit2_curl-964ed80307706078.rlib --extern glob=/opt/crater/target/debug/deps/libglob-b818597e6b4bc647.rlib --extern hex=/opt/crater/target/debug/deps/libhex-8c7be173b7b67a49.rlib --extern home=/opt/crater/target/debug/deps/libhome-b837da7732459611.rlib --extern ignore=/opt/crater/target/debug/deps/libignore-6f7a73b55585fefc.rlib --extern im_rc=/opt/crater/target/debug/deps/libim_rc-1d94f4c7338a7702.rlib --extern jobserver=/opt/crater/target/debug/deps/libjobserver-2e7f16e1531c3674.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-35422c5bca3b6d90.rlib --extern lazycell=/opt/crater/target/debug/deps/liblazycell-a8dafada2082fef2.rlib --extern libc=/opt/crater/target/debug/deps/liblibc-350a43dfff55e8f8.rlib --extern libgit2_sys=/opt/crater/target/debug/deps/liblibgit2_sys-7169598d2a8c0f8a.rlib --extern log=/opt/crater/target/debug/deps/liblog-e6944616a499931a.rlib --extern memchr=/opt/crater/target/debug/deps/libmemchr-8646d48e9f0a5d49.rlib --extern num_cpus=/opt/crater/target/debug/deps/libnum_cpus-200c789c679de97a.rlib --extern opener=/opt/crater/target/debug/deps/libopener-3ee59daafd440961.rlib --extern proptest=/opt/crater/target/debug/deps/libproptest-9470445cd2e7027b.rlib --extern rustc_workspace_hack=/opt/crater/target/debug/deps/librustc_workspace_hack-2d2db9689be469d2.rlib --extern rustfix=/opt/crater/target/debug/deps/librustfix-b12e9388eab8e977.rlib --extern same_file=/opt/crater/target/debug/deps/libsame_file-631f2481caf3c3a8.rlib --extern semver=/opt/crater/target/debug/deps/libsemver-c3c070b1598bbf10.rlib --extern serde=/opt/crater/target/debug/deps/libserde-2362a091e36eff61.rlib --extern serde_ignored=/opt/crater/target/debug/deps/libserde_ignored-bfaf14921d1bdb27.rlib --extern serde_json=/opt/crater/target/debug/deps/libserde_json-4d523a39597e8fd9.rlib --extern shell_escape=/opt/crater/target/debug/deps/libshell_escape-e43f28d5021bdabb.rlib --extern tar=/opt/crater/target/debug/deps/libtar-3109b831f9823cef.rlib --extern tempfile=/opt/crater/target/debug/deps/libtempfile-e6916fe5d4122178.rlib --extern termcolor=/opt/crater/target/debug/deps/libtermcolor-daa056bf4b66f6ae.rlib --extern toml=/opt/crater/target/debug/deps/libtoml-16fb62b310d30aec.rlib --extern unicode_width=/opt/crater/target/debug/deps/libunicode_width-26f3734d51bc29d0.rlib --extern url=/opt/crater/target/debug/deps/liburl-d1846cda2e7e44b0.rlib --extern url_serde=/opt/crater/target/debug/deps/liburl_serde-c3cf4296c4016b03.rlib --extern walkdir=/opt/crater/target/debug/deps/libwalkdir-f420cbd6f67af467.rlib --cap-lints=warn -L native=/opt/crater/target/debug/build/curl-sys-2ff79ae407301ec5/out/build -L native=/opt/crater/target/debug/build/libnghttp2-sys-f20b8a2ac51f4689/out/i/lib -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/crater/target/debug/build/backtrace-sys-7c8bf427e9144441/out -L native=/opt/crater/target/debug/build/miniz-sys-4ebc24890540db34/out -L native=/opt/crater/target/debug/build/libgit2-sys-bf377e437e26ede2/out/build -L native=/opt/crater/target/debug/build/libssh2-sys-3ccf92bc21aba4fc/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" "65524b0bfe8b43376ec0954a1dc13b85e7fbb901579bb36a761587faaaaa2d52"`
[INFO] running `"docker" "rm" "-f" "65524b0bfe8b43376ec0954a1dc13b85e7fbb901579bb36a761587faaaaa2d52"`
[INFO] [stdout] 65524b0bfe8b43376ec0954a1dc13b85e7fbb901579bb36a761587faaaaa2d52