[INFO] fetching crate class_group 0.6.0...
[INFO] checking class_group-0.6.0 against try#e3fba958e26aa56a364ba6d36376f1800cd40fa5 for pr-101437
[INFO] extracting crate class_group 0.6.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate class_group 0.6.0 on toolchain e3fba958e26aa56a364ba6d36376f1800cd40fa5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate class_group 0.6.0
[INFO] finished tweaking crates.io crate class_group 0.6.0
[INFO] tweaked toml for crates.io crate class_group 0.6.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 717a9ed8a7e79690cd0e84beb35f752e845db7779950cd9c4ae48e57cd70551b
[INFO] running `Command { std: "docker" "start" "-a" "717a9ed8a7e79690cd0e84beb35f752e845db7779950cd9c4ae48e57cd70551b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "717a9ed8a7e79690cd0e84beb35f752e845db7779950cd9c4ae48e57cd70551b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "717a9ed8a7e79690cd0e84beb35f752e845db7779950cd9c4ae48e57cd70551b", kill_on_drop: false }`
[INFO] [stdout] 717a9ed8a7e79690cd0e84beb35f752e845db7779950cd9c4ae48e57cd70551b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 453357286d55acd5d6d0b295c9ba5cc243f0acd9bcec9e6d3367db524753a42c
[INFO] running `Command { std: "docker" "start" "-a" "453357286d55acd5d6d0b295c9ba5cc243f0acd9bcec9e6d3367db524753a42c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]     Checking const-oid v0.6.2
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling anyhow v1.0.64
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.10
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking keccak v0.1.2
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking cryptoxide v0.1.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling rug v1.17.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking merkle-cbt v0.3.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking der v0.4.5
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]    Compiling backtrace v0.3.66
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking spki v0.4.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking pkcs8 v0.7.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling object v0.29.0
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.11.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking plotters v0.3.3
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking ff v0.10.1
[INFO] [stderr]     Checking signature v1.3.2
[INFO] [stderr]     Checking hmac v0.11.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking group v0.10.0
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr] error: could not compile `rug`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rug --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rug-1.17.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="complex"' --cfg 'feature="default"' --cfg 'feature="float"' --cfg 'feature="gmp-mpfr-sys"' --cfg 'feature="integer"' --cfg 'feature="rand"' --cfg 'feature="rational"' -C metadata=59915a8dba8ef1bb -C extra-filename=-59915a8dba8ef1bb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern az=/opt/rustwide/target/debug/deps/libaz-1de4db63b92c41ab.rmeta --extern gmp_mpfr_sys=/opt/rustwide/target/debug/deps/libgmp_mpfr_sys-a5df7292a4f359a3.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-469d2060a06cd8c5.rmeta --cap-lints allow --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/gmp-mpfr-sys-815940d27541d1e6/out/lib --cfg gmp_limb_bits_64 --cfg unsafe_in_unsafe --cfg doc_alias` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "453357286d55acd5d6d0b295c9ba5cc243f0acd9bcec9e6d3367db524753a42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "453357286d55acd5d6d0b295c9ba5cc243f0acd9bcec9e6d3367db524753a42c", kill_on_drop: false }`
[INFO] [stdout] 453357286d55acd5d6d0b295c9ba5cc243f0acd9bcec9e6d3367db524753a42c