[INFO] fetching crate cargo 0.48.0...
[INFO] testing cargo-0.48.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate cargo 0.48.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cargo 0.48.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo 0.48.0
[INFO] finished tweaking crates.io crate cargo 0.48.0
[INFO] tweaked toml for crates.io crate cargo 0.48.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate cargo 0.48.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a7f7a83551f8ca2e7233dc4bbe27449fcfce338e264aaeb82a320238041eb36
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5a7f7a83551f8ca2e7233dc4bbe27449fcfce338e264aaeb82a320238041eb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a7f7a83551f8ca2e7233dc4bbe27449fcfce338e264aaeb82a320238041eb36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a7f7a83551f8ca2e7233dc4bbe27449fcfce338e264aaeb82a320238041eb36", kill_on_drop: false }`
[INFO] [stdout] 5a7f7a83551f8ca2e7233dc4bbe27449fcfce338e264aaeb82a320238041eb36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3cd07d9688378d5581d0add0101903ebf44ada3f8412131eb78323efac8e4f6e
[INFO] running `Command { std: "docker" "start" "-a" "3cd07d9688378d5581d0add0101903ebf44ada3f8412131eb78323efac8e4f6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.37
[INFO] [stderr]    Compiling curl v0.4.31
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling curl-sys v0.4.33+curl-7.71.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.18
[INFO] [stderr]    Compiling libgit2-sys v0.12.9+1.0.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling tar v0.4.29
[INFO] [stderr]    Compiling im-rc v15.0.0
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling cargo v0.48.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling git2 v0.13.8
[INFO] [stderr]    Compiling git2-curl v0.14.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling serde_ignored v0.1.2
[INFO] [stderr]    Compiling semver v0.10.0
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling crates-io v0.31.1
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr] error: could not compile `cargo`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cargo --edition=2018 src/cargo/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=28ca09b54adee18f -C extra-filename=-28ca09b54adee18f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-091fa8964e8e1517.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-7ead3b8bfa9d46ea.rmeta --extern bytesize=/opt/rustwide/target/debug/deps/libbytesize-f2aa0496069804ce.rmeta --extern cargo_platform=/opt/rustwide/target/debug/deps/libcargo_platform-50a8f2fc9d501512.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-23cf5b9eb45402a2.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-f261f96f1f5222f0.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-5ef602b149509a13.rmeta --extern crypto_hash=/opt/rustwide/target/debug/deps/libcrypto_hash-15d1f7915fefc14a.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-a0ad5895a29a3e7c.rmeta --extern curl_sys=/opt/rustwide/target/debug/deps/libcurl_sys-65ca8768ba4d2da5.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-1b40f69a41c0508d.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-783d1ca9cc553978.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-16e9568995a11306.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-3f7285cbc07cedec.rmeta --extern git2_curl=/opt/rustwide/target/debug/deps/libgit2_curl-d82ed70a7e31eeb2.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-918b5d1fb8a81879.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-6704a6e0174e9e51.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-5095fb870a858d1c.rmeta --extern humantime=/opt/rustwide/target/debug/deps/libhumantime-1e39414f4621e554.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-e61c0eb563943509.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-4e0f77b066bec246.rmeta --extern jobserver=/opt/rustwide/target/debug/deps/libjobserver-f21693e07ae686d2.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-bf21cfb31a9e28ca.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-26813a04d2adfc16.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-6bc5f426dad545df.rmeta --extern libgit2_sys=/opt/rustwide/target/debug/deps/liblibgit2_sys-ad0c73594365271b.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c0aac21270a44eb0.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-d49ac1e01d7c87e9.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-aa83ca2ab8cf620e.rmeta --extern opener=/opt/rustwide/target/debug/deps/libopener-e200bbd43bd218d9.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-b8f70c4d24b687b1.rmeta --extern rustc_workspace_hack=/opt/rustwide/target/debug/deps/librustc_workspace_hack-2f0239bced60108a.rmeta --extern rustfix=/opt/rustwide/target/debug/deps/librustfix-f14f1ba22deac88a.rmeta --extern same_file=/opt/rustwide/target/debug/deps/libsame_file-55d9e4e23e414bb7.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-a47801514f2b4077.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-eb534f33f6b5269a.rmeta --extern serde_ignored=/opt/rustwide/target/debug/deps/libserde_ignored-b317849714eb093c.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-03eff8639a474f59.rmeta --extern shell_escape=/opt/rustwide/target/debug/deps/libshell_escape-fb75d44ad94d86af.rmeta --extern strip_ansi_escapes=/opt/rustwide/target/debug/deps/libstrip_ansi_escapes-6c1ecfc34b8cb53c.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-2c41594d73cf59f8.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-effacd6448fed6b2.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-77991fd1113c1c90.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-0839c716cd3a1c20.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-0465a15c15895916.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-8a058fa190690d36.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-a8e4555ff41cb5b7.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-cbb4f9c1da2f991c.rmeta --cap-lints=warn -L native=/opt/rustwide/target/debug/build/curl-sys-4e6432c4548a764b/out/build -L native=/opt/rustwide/target/debug/build/libnghttp2-sys-8fdc46c75fd94559/out/i/lib -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/rustwide/target/debug/build/libgit2-sys-fa0d01cdbfc6ecc6/out/build -L native=/opt/rustwide/target/debug/build/libssh2-sys-51c46cd943cc9b58/out/build` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3cd07d9688378d5581d0add0101903ebf44ada3f8412131eb78323efac8e4f6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd07d9688378d5581d0add0101903ebf44ada3f8412131eb78323efac8e4f6e", kill_on_drop: false }`
[INFO] [stdout] 3cd07d9688378d5581d0add0101903ebf44ada3f8412131eb78323efac8e4f6e
