[INFO] cloning repository https://github.com/dogweather/bookends
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dogweather/bookends" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdogweather%2Fbookends", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdogweather%2Fbookends'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0003d9a3119e3a8dfaf038c62c5a730075b87efb
[INFO] testing dogweather/bookends against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdogweather%2Fbookends" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dogweather/bookends on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dogweather/bookends
[INFO] finished tweaking git repo https://github.com/dogweather/bookends
[INFO] tweaked toml for git repo https://github.com/dogweather/bookends written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dogweather/bookends already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31ea47dc7ff8a70ee6e0b2d6aea2e736288cb3107e06cc68a50f1a7241ca8df7
[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" "31ea47dc7ff8a70ee6e0b2d6aea2e736288cb3107e06cc68a50f1a7241ca8df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31ea47dc7ff8a70ee6e0b2d6aea2e736288cb3107e06cc68a50f1a7241ca8df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31ea47dc7ff8a70ee6e0b2d6aea2e736288cb3107e06cc68a50f1a7241ca8df7", kill_on_drop: false }`
[INFO] [stdout] 31ea47dc7ff8a70ee6e0b2d6aea2e736288cb3107e06cc68a50f1a7241ca8df7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 75ae3b85a5bb410dd2c444bc796486353cff5490f0d44a7b6f8bcd6cec39fa10
[INFO] running `Command { std: "docker" "start" "-a" "75ae3b85a5bb410dd2c444bc796486353cff5490f0d44a7b6f8bcd6cec39fa10", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling curl v0.4.30
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling bytesize v1.0.1
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling shell-escape v0.1.5
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling im-rc v15.0.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling filetime v0.2.10
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling tar v0.4.29
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling ignore v0.4.16
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.18
[INFO] [stderr]    Compiling curl-sys v0.4.32+curl-7.70.0
[INFO] [stderr]    Compiling libgit2-sys v0.12.7+1.0.0
[INFO] [stderr]    Compiling sized-chunks v0.6.2
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling git2 v0.13.6
[INFO] [stderr]    Compiling git2-curl v0.14.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling serde_ignored v0.1.2
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling semver v0.10.0
[INFO] [stderr]    Compiling crates-io v0.31.1
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr]    Compiling cargo v0.46.0
[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 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.46.0/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=7429c785e86742ef -C extra-filename=-7429c785e86742ef --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-6fd697f1349da5f5.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-91db5655e9ab9c08.rmeta --extern bytesize=/opt/rustwide/target/debug/deps/libbytesize-5a538e5e77e69d68.rmeta --extern cargo_platform=/opt/rustwide/target/debug/deps/libcargo_platform-cf7854ba44ee2175.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-028c53528ad419b9.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-c3b9679562c2070f.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-506755c7eca3e021.rmeta --extern crypto_hash=/opt/rustwide/target/debug/deps/libcrypto_hash-24437b0ea0bcaa42.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-18cf39de396ecac9.rmeta --extern curl_sys=/opt/rustwide/target/debug/deps/libcurl_sys-cb2db1b730cff98b.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-5eb5d27f6bb17b1f.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-978517e7bdb7094e.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-f8d11c7ee8e81eee.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-758dac3a1ce5e427.rmeta --extern git2_curl=/opt/rustwide/target/debug/deps/libgit2_curl-3b4cb7ca0d4de220.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-c2143d50ee53b852.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-350a6eb46c5c29f9.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-888dbb6deffe8533.rmeta --extern humantime=/opt/rustwide/target/debug/deps/libhumantime-02d977057d771e17.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-0fc16e568b3a8a7e.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-7842e7383ecafb4e.rmeta --extern jobserver=/opt/rustwide/target/debug/deps/libjobserver-5a8987f30161380e.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-8d64c0c5c2ba1fa0.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-177f9db1f3203a0c.rmeta --extern libgit2_sys=/opt/rustwide/target/debug/deps/liblibgit2_sys-4419ec65dcd4b241.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-5bfb20592c7a6792.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-15ff39dbd52f8080.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-0c49ebafe23353e2.rmeta --extern opener=/opt/rustwide/target/debug/deps/libopener-2a6ef613cb94c7c1.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-e457123dded25aba.rmeta --extern remove_dir_all=/opt/rustwide/target/debug/deps/libremove_dir_all-b2c8a73c8198091a.rmeta --extern rustc_workspace_hack=/opt/rustwide/target/debug/deps/librustc_workspace_hack-d847043af8fd9221.rmeta --extern rustfix=/opt/rustwide/target/debug/deps/librustfix-5a68189d8f46d296.rmeta --extern same_file=/opt/rustwide/target/debug/deps/libsame_file-36dfff0ef8311abf.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-0c351cecdec56d1a.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-04d5049b2cccb3b5.rmeta --extern serde_ignored=/opt/rustwide/target/debug/deps/libserde_ignored-059d2a8caf956d5e.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f1bb79ec02d56416.rmeta --extern shell_escape=/opt/rustwide/target/debug/deps/libshell_escape-e5f620faa84a5f3c.rmeta --extern strip_ansi_escapes=/opt/rustwide/target/debug/deps/libstrip_ansi_escapes-7a0b5f1c34efaab4.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-dcc5bb0388b89562.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-03cff0d5b14a0489.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-42ba0c722a422d99.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-f2a65ea1ce37e28d.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-05a4b639dec6224c.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4f4df54432f3a5d3.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-ae4f8bd575f23979.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-1c63563fd104183e.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/rustwide/target/debug/build/curl-sys-6f600ad5862e1af5/out/build -L native=/opt/rustwide/target/debug/build/libnghttp2-sys-d7247b0748b436b0/out/i/lib -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/rustwide/target/debug/build/libgit2-sys-d5a0abf689b53295/out/build -L native=/opt/rustwide/target/debug/build/libssh2-sys-9b5a93be8b057aff/out/build` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "75ae3b85a5bb410dd2c444bc796486353cff5490f0d44a7b6f8bcd6cec39fa10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75ae3b85a5bb410dd2c444bc796486353cff5490f0d44a7b6f8bcd6cec39fa10", kill_on_drop: false }`
[INFO] [stdout] 75ae3b85a5bb410dd2c444bc796486353cff5490f0d44a7b6f8bcd6cec39fa10