[INFO] cloning repository https://github.com/oxalica/cargo-gc-target
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oxalica/cargo-gc-target" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f6e7498f6d1e28963ba8e387ceacc36ad54c504
[INFO] testing oxalica/cargo-gc-target against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oxalica/cargo-gc-target 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/oxalica/cargo-gc-target
[INFO] finished tweaking git repo https://github.com/oxalica/cargo-gc-target
[INFO] tweaked toml for git repo https://github.com/oxalica/cargo-gc-target written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/oxalica/cargo-gc-target 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded serde_ignored v0.1.2
[INFO] [stderr]   Downloaded git2-curl v0.14.1
[INFO] [stderr]   Downloaded sized-chunks v0.6.4
[INFO] [stderr]   Downloaded opener v0.4.1
[INFO] [stderr]   Downloaded fwdansi v1.1.0
[INFO] [stderr]   Downloaded curl v0.4.35
[INFO] [stderr]   Downloaded commoncrypto-sys v0.2.0
[INFO] [stderr]   Downloaded crypto-hash v0.3.4
[INFO] [stderr]   Downloaded strip-ansi-escapes v0.1.0
[INFO] [stderr]   Downloaded rustfix v0.5.1
[INFO] [stderr]   Downloaded git2 v0.13.17
[INFO] [stderr]   Downloaded im-rc v15.0.0
[INFO] [stderr]   Downloaded crates-io v0.33.0
[INFO] [stderr]   Downloaded libgit2-sys v0.12.18+1.1.0
[INFO] [stderr]   Downloaded cargo v0.52.0
[INFO] [stderr]   Downloaded curl-sys v0.4.41+curl-7.75.0
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded vte v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] cb7c28b6727bdf4bcbe080417f2109fa3ad6f44cd27e312e29e308d349a4e0eb
[INFO] running `Command { std: "docker" "start" "-a" "cb7c28b6727bdf4bcbe080417f2109fa3ad6f44cd27e312e29e308d349a4e0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb7c28b6727bdf4bcbe080417f2109fa3ad6f44cd27e312e29e308d349a4e0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb7c28b6727bdf4bcbe080417f2109fa3ad6f44cd27e312e29e308d349a4e0eb", kill_on_drop: false }`
[INFO] [stdout] cb7c28b6727bdf4bcbe080417f2109fa3ad6f44cd27e312e29e308d349a4e0eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] 72127ca608c44215481678c747952e7be05e8ee0f1f16f2bc503e88655ac506a
[INFO] running `Command { std: "docker" "start" "-a" "72127ca608c44215481678c747952e7be05e8ee0f1f16f2bc503e88655ac506a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling curl v0.4.35
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling shell-escape v0.1.5
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling bytesize v1.0.1
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling im-rc v15.0.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling idna v0.2.2
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling vte v0.3.3
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling tar v0.4.33
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling sized-chunks v0.6.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]    Compiling curl-sys v0.4.41+curl-7.75.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling libgit2-sys v0.12.18+1.1.0
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling cargo v0.52.0
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling git2 v0.13.17
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling git2-curl v0.14.1
[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 v0.5.8
[INFO] [stderr]    Compiling crates-io v0.33.0
[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 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.52.0/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=996bc681b32efda9 -C extra-filename=-996bc681b32efda9 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-f256151e77de7bfb.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-c5289c2e6251a0ef.rmeta --extern bytesize=/opt/rustwide/target/debug/deps/libbytesize-5a538e5e77e69d68.rmeta --extern cargo_platform=/opt/rustwide/target/debug/deps/libcargo_platform-9e5df2de2e647b0e.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-594e0c88315f5332.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-54450c4a72438d6f.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-f5c08f14fc29b899.rmeta --extern crypto_hash=/opt/rustwide/target/debug/deps/libcrypto_hash-447f1fd4b6306901.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-cc48622d05416525.rmeta --extern curl_sys=/opt/rustwide/target/debug/deps/libcurl_sys-d6357ce5175493a1.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-97833870b9840c2d.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-d77f9b5b19d29c51.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-1eb86b2f89c1bf3f.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-fda05be83959756e.rmeta --extern git2_curl=/opt/rustwide/target/debug/deps/libgit2_curl-c684ce28cb54d01c.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-c2143d50ee53b852.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-33fd519b96d635fb.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-888dbb6deffe8533.rmeta --extern humantime=/opt/rustwide/target/debug/deps/libhumantime-4653c4407a4f842d.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-ce625798ac06c0e0.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-bbd8f87faf992c7f.rmeta --extern jobserver=/opt/rustwide/target/debug/deps/libjobserver-e7deeef222ccadc2.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-16d834afa391e717.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-15df20b0e1802354.rmeta --extern libgit2_sys=/opt/rustwide/target/debug/deps/liblibgit2_sys-3bc2a8dee798ebbc.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-7914ddd45155fdc8.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-e16668cc5a7251cd.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-7d96c07ab9125990.rmeta --extern opener=/opt/rustwide/target/debug/deps/libopener-2a6ef613cb94c7c1.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-e457123dded25aba.rmeta --extern rustc_workspace_hack=/opt/rustwide/target/debug/deps/librustc_workspace_hack-d847043af8fd9221.rmeta --extern rustfix=/opt/rustwide/target/debug/deps/librustfix-bf7c7324544b10d4.rmeta --extern same_file=/opt/rustwide/target/debug/deps/libsame_file-36dfff0ef8311abf.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-7c8573a5553665c1.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c46217b300614d42.rmeta --extern serde_ignored=/opt/rustwide/target/debug/deps/libserde_ignored-fdca02ba1cb77dd9.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-aacfb650d531c1d4.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-771cdb12e32a8309.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-c62f274b93697e74.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-8f27c150af643511.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-c0fef3e10a987c35.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-ceb4c44f8fb7d87c.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-5e165100e176414b.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/rustwide/target/debug/build/curl-sys-18bf0902eff3e953/out/build -L native=/opt/rustwide/target/debug/build/libnghttp2-sys-8e1880eb58175f11/out/i/lib -L native=/opt/rustwide/target/debug/build/libgit2-sys-2e80e74f426ebfe8/out/build -L native=/opt/rustwide/target/debug/build/libssh2-sys-5da5d12b8847ffa2/out/build` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "72127ca608c44215481678c747952e7be05e8ee0f1f16f2bc503e88655ac506a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72127ca608c44215481678c747952e7be05e8ee0f1f16f2bc503e88655ac506a", kill_on_drop: false }`
[INFO] [stdout] 72127ca608c44215481678c747952e7be05e8ee0f1f16f2bc503e88655ac506a