[INFO] crate semverver 0.1.41 is already in cache
[INFO] testing semverver-0.1.41 against 1.38.0 for beta-1.39-1
[INFO] extracting crate semverver 0.1.41 into work/builds/worker-10/source
[INFO] validating manifest of crates.io crate semverver 0.1.41 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate semverver 0.1.41
[INFO] finished tweaking crates.io crate semverver 0.1.41
[INFO] tweaked toml for crates.io crate semverver 0.1.41 written to work/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate semverver 0.1.41 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 787cdc53bd7e4fd2692852494727683878a2c6fc65af3c529777f39430b86145
[INFO] running `"docker" "start" "-a" "787cdc53bd7e4fd2692852494727683878a2c6fc65af3c529777f39430b86145"`
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling curl v0.4.22
[INFO] [stderr]    Compiling semverver v0.1.41 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bytesize v1.0.0
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling shell-escape v0.1.4
[INFO] [stderr]    Compiling opener v0.4.0
[INFO] [stderr]    Compiling home v0.3.4
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.20
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling bstr v0.2.7
[INFO] [stderr]    Compiling sized-chunks v0.1.3
[INFO] [stderr]    Compiling jobserver v0.1.16
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling backtrace v0.3.35
[INFO] [stderr]    Compiling flate2 v1.0.11
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling globset v0.4.4
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling ignore v0.4.10
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling url_serde v0.2.0
[INFO] [stderr]    Compiling serde_ignored v0.0.4
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling im-rc v12.3.4
[INFO] [stderr]    Compiling crates-io v0.25.0
[INFO] [stderr]    Compiling rustfix v0.4.6
[INFO] [stderr]    Compiling crates-io v0.24.0
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling git2-curl v0.9.0
[INFO] [stderr]    Compiling cargo v0.37.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(rustc_diagnostic_macros)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(rustc_private)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `semverver`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `cargo`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name cargo /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cargo-0.37.0/src/cargo/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=addc144b4c8f0151 -C extra-filename=-addc144b4c8f0151 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern atty=/opt/rustwide/target/debug/deps/libatty-aeb8402cda341d72.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-f584045056e081f3.rmeta --extern bytesize=/opt/rustwide/target/debug/deps/libbytesize-0fb8a70cca18fcbb.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-1d28039db1852cce.rmeta --extern crates_io=/opt/rustwide/target/debug/deps/libcrates_io-8a1dddbe1123ab1e.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-060d7f153224412c.rmeta --extern crypto_hash=/opt/rustwide/target/debug/deps/libcrypto_hash-450ef907b78606c0.rmeta --extern curl=/opt/rustwide/target/debug/deps/libcurl-57fde6d0704ae0bd.rmeta --extern curl_sys=/opt/rustwide/target/debug/deps/libcurl_sys-bcc704e339f3a160.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-35f7a95f48d27bb8.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-c9cb5f78265ab205.rmeta --extern filetime=/opt/rustwide/target/debug/deps/libfiletime-73bc13db69388fd6.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-8c26500ca01e3494.rmeta --extern fs2=/opt/rustwide/target/debug/deps/libfs2-77bb0f77749d9c8e.rmeta --extern git2=/opt/rustwide/target/debug/deps/libgit2-296848ad1d2d23c2.rmeta --extern git2_curl=/opt/rustwide/target/debug/deps/libgit2_curl-8ba397162b945461.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-657487874406c7e8.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-1dafeb224c42a78f.rmeta --extern home=/opt/rustwide/target/debug/deps/libhome-f5b357d7e6922715.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-6a83504d5dfa327b.rmeta --extern im_rc=/opt/rustwide/target/debug/deps/libim_rc-43e4d6f27cc06291.rmeta --extern jobserver=/opt/rustwide/target/debug/deps/libjobserver-e8f8bfe1be634ad2.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-806f5cf8273b470a.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-85bf9c74b6cfa43c.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-a3b13f6b27abcc70.rmeta --extern libgit2_sys=/opt/rustwide/target/debug/deps/liblibgit2_sys-93b5f7fc9f56d9e9.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-908da68745edcb99.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-07c655ccb8662d4a.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-1a9b896f537e17c6.rmeta --extern opener=/opt/rustwide/target/debug/deps/libopener-cd9098f181d33083.rmeta --extern rustc_workspace_hack=/opt/rustwide/target/debug/deps/librustc_workspace_hack-072fc1b311632250.rmeta --extern rustfix=/opt/rustwide/target/debug/deps/librustfix-4c6fb5991e5ac608.rmeta --extern same_file=/opt/rustwide/target/debug/deps/libsame_file-7af609ac8eb5f9ee.rmeta --extern semver=/opt/rustwide/target/debug/deps/libsemver-92a94b8327dace7e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-61e3dccf12f75d7c.rmeta --extern serde_ignored=/opt/rustwide/target/debug/deps/libserde_ignored-55583844a9bdb762.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-7426d5247400c272.rmeta --extern shell_escape=/opt/rustwide/target/debug/deps/libshell_escape-d2d637cdd097564f.rmeta --extern tar=/opt/rustwide/target/debug/deps/libtar-f9d3dada0a0478d4.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-4e7e178cc578ad41.rmeta --extern termcolor=/opt/rustwide/target/debug/deps/libtermcolor-f54b97b28a819b63.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-53394a102ee933f6.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-019a22cacfcfb093.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-1b0b9479fbeae824.rmeta --extern url_serde=/opt/rustwide/target/debug/deps/liburl_serde-2759d8539af65883.rmeta --extern walkdir=/opt/rustwide/target/debug/deps/libwalkdir-b9c5419fe288b67c.rmeta --cap-lints allow --cap-lints=warn -L native=/opt/rustwide/target/debug/build/curl-sys-f3c68d2273225f67/out/build -L native=/opt/rustwide/target/debug/build/libnghttp2-sys-e2e0cfab875076cf/out/i/lib -L native=/usr/lib/x86_64-linux-gnu -L native=/opt/rustwide/target/debug/build/backtrace-sys-72c543d87d0e03c8/out -L native=/opt/rustwide/target/debug/build/miniz-sys-079c690851c12f99/out -L native=/opt/rustwide/target/debug/build/libgit2-sys-d9933844d69463f8/out/build -L native=/opt/rustwide/target/debug/build/libssh2-sys-56284be4abcc3b75/out/build` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "787cdc53bd7e4fd2692852494727683878a2c6fc65af3c529777f39430b86145"`
[INFO] running `"docker" "rm" "-f" "787cdc53bd7e4fd2692852494727683878a2c6fc65af3c529777f39430b86145"`
[INFO] [stdout] 787cdc53bd7e4fd2692852494727683878a2c6fc65af3c529777f39430b86145