[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] building oxalica/cargo-gc-target against master#c2804e6ec2c29a5c7368600ea173b890e2655c3d for pr-97334-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target" "/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/oxalica/cargo-gc-target on toolchain c2804e6ec2c29a5c7368600ea173b890e2655c3d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "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-7/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" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ignore v0.4.17
[INFO] [stderr]   Downloaded curl v0.4.35
[INFO] [stderr]   Downloaded cargo v0.52.0
[INFO] [stderr]   Downloaded curl-sys v0.4.41+curl-7.75.0
[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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb4bce481accd5578ce724112acbcefef312c5ce89899f1069747bde0d4e0d2f
[INFO] running `Command { std: "docker" "start" "-a" "fb4bce481accd5578ce724112acbcefef312c5ce89899f1069747bde0d4e0d2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb4bce481accd5578ce724112acbcefef312c5ce89899f1069747bde0d4e0d2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4bce481accd5578ce724112acbcefef312c5ce89899f1069747bde0d4e0d2f", kill_on_drop: false }`
[INFO] [stdout] fb4bce481accd5578ce724112acbcefef312c5ce89899f1069747bde0d4e0d2f
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c78d0142cc1905570b5cc2945af3df9c02fa7646d890c5ad50a7e9e4ce323039
[INFO] running `Command { std: "docker" "start" "-a" "c78d0142cc1905570b5cc2945af3df9c02fa7646d890c5ad50a7e9e4ce323039", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling curl v0.4.35
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling bytesize v1.0.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling shell-escape v0.1.5
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling im-rc v15.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling vte v0.3.3
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.17
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling idna v0.2.2
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling cc v1.0.67
[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 v0.11.0
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling sized-chunks v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling ignore v0.4.17
[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 tempfile v3.2.0
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling cargo v0.52.0
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling semver v0.10.0
[INFO] [stderr]    Compiling serde_ignored v0.1.2
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr]    Compiling crates-io v0.33.0
[INFO] [stderr]    Compiling git2 v0.13.17
[INFO] [stderr]    Compiling git2-curl v0.14.1
[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,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=49dbc03c3ac21f12 -C extra-filename=-49dbc03c3ac21f12 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-12bc1d15d100a19c.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-8678412d35a6bde6.rmeta --extern bytesize=/opt/rustwide/target/debug/deps/libbytesize-68ebdd8427171cad.rmeta --extern cargo_platform=/opt/rustwide/target/debug/deps/libcargo_platform-df92acee13fa987b.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-9e06dc1f63cdd93b.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-48a46a7d61f6e18e.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-0142df1aa05c9caf.rmeta --extern crypto_hash=/opt/rustwide/target/debug/deps/libcrypto_hash-7028988984b848b1.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-b9aacf9f29092d99.rmeta --extern curl_sys=/opt/rustwide/target/debug/deps/libcurl_sys-3b5d11656a8960ef.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-0aee4d42c82eff73.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-12d68e5917297a90.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-d46658c1cc62a330.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-c0b56a2c3b8a75c8.rmeta --extern git2_curl=/opt/rustwide/target/debug/deps/libgit2_curl-9efacda1ea6dee4a.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-d3943553b96703d7.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-df8306afd9dee15d.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-a678aadba044a88e.rmeta --extern humantime=/opt/rustwide/target/debug/deps/libhumantime-69fede984985242f.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-eb87bcc5339e2490.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-cea78b4ed1769be4.rmeta --extern jobserver=/opt/rustwide/target/debug/deps/libjobserver-53829074c473c8ba.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b33cd6b8ee13db74.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-d2ae0c144988a8f0.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-73aa23f9615b1e2c.rmeta --extern libgit2_sys=/opt/rustwide/target/debug/deps/liblibgit2_sys-1e0014e4164351d8.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-41607b4997ff699e.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-3db82c5a8ba2376a.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-8d1897cf9b4ecc92.rmeta --extern opener=/opt/rustwide/target/debug/deps/libopener-99eafa5fb0a96157.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-b196e1663297fef1.rmeta --extern rustc_workspace_hack=/opt/rustwide/target/debug/deps/librustc_workspace_hack-de795048afd1d085.rmeta --extern rustfix=/opt/rustwide/target/debug/deps/librustfix-e78b194eb45b1191.rmeta --extern same_file=/opt/rustwide/target/debug/deps/libsame_file-d3ddf74b396c2e8b.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-66b63778adc3e058.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-310c9fc5d8b15052.rmeta --extern serde_ignored=/opt/rustwide/target/debug/deps/libserde_ignored-ef4abbe8b943042e.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-11e68d60ae7385c4.rmeta --extern shell_escape=/opt/rustwide/target/debug/deps/libshell_escape-71d73ed33e64fb9f.rmeta --extern strip_ansi_escapes=/opt/rustwide/target/debug/deps/libstrip_ansi_escapes-ae54ca7476725b82.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-ad28831c2839ffac.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-a711361f773106a9.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-6a61078d9610ba74.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-c102cd8db42ae7dc.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-6da279cd4f865ec2.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-ca70f4dd0d5d1ebc.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-5367bcd1724e6e7f.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-85c3caa7668e091f.rmeta --cap-lints allow --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/curl-sys-905bd4b0848b3b97/out/build -L native=/opt/rustwide/target/debug/build/libnghttp2-sys-902e4a42a1ee55a0/out/i/lib -L native=/opt/rustwide/target/debug/build/libgit2-sys-b1bace1becb76b20/out/build -L native=/opt/rustwide/target/debug/build/libssh2-sys-15f79cf973374431/out/build` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "c78d0142cc1905570b5cc2945af3df9c02fa7646d890c5ad50a7e9e4ce323039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c78d0142cc1905570b5cc2945af3df9c02fa7646d890c5ad50a7e9e4ce323039", kill_on_drop: false }`
[INFO] [stdout] c78d0142cc1905570b5cc2945af3df9c02fa7646d890c5ad50a7e9e4ce323039