[INFO] crate vkcargo 0.45.1 is already in cache
[INFO] testing vkcargo-0.45.1 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate vkcargo 0.45.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate vkcargo 0.45.1 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vkcargo 0.45.1
[INFO] finished tweaking crates.io crate vkcargo 0.45.1
[INFO] tweaked toml for crates.io crate vkcargo 0.45.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate vkcargo 0.45.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f62e10d379e4873d2dacace798fe8d4a45041aa38fc76b448770683f810a1d5
[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" "1f62e10d379e4873d2dacace798fe8d4a45041aa38fc76b448770683f810a1d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f62e10d379e4873d2dacace798fe8d4a45041aa38fc76b448770683f810a1d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f62e10d379e4873d2dacace798fe8d4a45041aa38fc76b448770683f810a1d5", kill_on_drop: false }`
[INFO] [stdout] 1f62e10d379e4873d2dacace798fe8d4a45041aa38fc76b448770683f810a1d5
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1b3935496cee03ba9ad2233ff29b85ff04048341e609ebfee0451146c2f6e7a
[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" "d1b3935496cee03ba9ad2233ff29b85ff04048341e609ebfee0451146c2f6e7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling smallvec v1.2.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling bytesize v1.0.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling humantime v2.0.0
[INFO] [stderr]    Compiling shell-escape v0.1.4
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling vte v0.3.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling filetime v0.2.9
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.3
[INFO] [stderr]    Compiling curl-sys v0.4.30+curl-7.69.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.16
[INFO] [stderr]    Compiling libgit2-sys v0.12.2+1.0.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling sized-chunks v0.5.3
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling ignore v0.4.14
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling git2 v0.13.1
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling git2-curl v0.14.0
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling serde_ignored v0.1.1
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crates-io v0.31.0
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr]    Compiling vkcargo v0.45.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/cargo/sources/git/utils.rs:841:17
[INFO] [stdout]     |
[INFO] [stdout] 841 |                 mem::replace(repo, new);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vkcargo`.
[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 -Cembed-bitcode=no -C debuginfo=2 -C metadata=8da458b02c9072e3 -C extra-filename=-8da458b02c9072e3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-32b66572876f04db.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-56a784a66ac8b420.rmeta --extern bytesize=/opt/rustwide/target/debug/deps/libbytesize-bbf475667aed35c8.rmeta --extern cargo_platform=/opt/rustwide/target/debug/deps/libcargo_platform-36d4827dbbf4f266.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-aaea45307ade1048.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-2533a01e917c9026.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-81bff507660079cf.rmeta --extern crypto_hash=/opt/rustwide/target/debug/deps/libcrypto_hash-16e589b5937c0bea.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-c1c439e1253ec601.rmeta --extern curl_sys=/opt/rustwide/target/debug/deps/libcurl_sys-2314f38ba974bf28.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-fdacf65e55f25dac.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-4fc4374d52740167.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-65d0fc5ba0cccb09.rmeta --extern fs2=/opt/rustwide/target/debug/deps/libfs2-0bb745ce70746380.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-b1a6c86ee7694229.rmeta --extern git2_curl=/opt/rustwide/target/debug/deps/libgit2_curl-58e8e03020ffb29c.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-22257a5316e5ea03.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-fb13f38417616817.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-9a497bf3a9a93017.rmeta --extern humantime=/opt/rustwide/target/debug/deps/libhumantime-d6a649233fe1a11f.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-f2e0dcb3ee7f5a93.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-f9bdb4e1280018fc.rmeta --extern jobserver=/opt/rustwide/target/debug/deps/libjobserver-b355ac8e86e29bed.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-7c0477ae3415ac1f.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-57bae41b5b54971f.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-aadda8a52fdf135c.rmeta --extern libgit2_sys=/opt/rustwide/target/debug/deps/liblibgit2_sys-8596117077605c1d.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-2c5a3e6f05aa3f12.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-1e6b68a09fbeab95.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-ac61d1ec8329032e.rmeta --extern opener=/opt/rustwide/target/debug/deps/libopener-6501ce586fddf752.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-e676c97fbc74cd56.rmeta --extern remove_dir_all=/opt/rustwide/target/debug/deps/libremove_dir_all-a91f273d7fa78a84.rmeta --extern rustc_workspace_hack=/opt/rustwide/target/debug/deps/librustc_workspace_hack-f4d9f480b3bef615.rmeta --extern rustfix=/opt/rustwide/target/debug/deps/librustfix-adb9b3fa62971d73.rmeta --extern same_file=/opt/rustwide/target/debug/deps/libsame_file-d8f70bf8210d83df.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-fa56a706339cba91.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4710b7ae8289d951.rmeta --extern serde_ignored=/opt/rustwide/target/debug/deps/libserde_ignored-f350585a81cfcb5e.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-53fe9e6ef26ad38b.rmeta --extern shell_escape=/opt/rustwide/target/debug/deps/libshell_escape-f5bde363e519d07e.rmeta --extern strip_ansi_escapes=/opt/rustwide/target/debug/deps/libstrip_ansi_escapes-d0d18cf37768cb60.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-d29999f35be3f9e8.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-50c7611e83a0683b.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-7e1a178fe95831dc.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-bf4869beed691f90.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-429698455c73d9c3.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-6181e2f2fb8255ce.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-0b7137d2caad5899.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-2688f5fb2dd1ef4c.rmeta --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/curl-sys-ded339020cd8f841/out/build -L native=/opt/rustwide/target/debug/build/libnghttp2-sys-25e107f57c8b6d00/out/i/lib -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/rustwide/target/debug/build/libgit2-sys-fe4de0f2e89ed7f7/out/build -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/rustwide/target/debug/build/libssh2-sys-88aa33a1ac95e452/out/build` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "d1b3935496cee03ba9ad2233ff29b85ff04048341e609ebfee0451146c2f6e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1b3935496cee03ba9ad2233ff29b85ff04048341e609ebfee0451146c2f6e7a", kill_on_drop: false }`
[INFO] [stdout] d1b3935496cee03ba9ad2233ff29b85ff04048341e609ebfee0451146c2f6e7a