[INFO] fetching crate cargo-semverver 0.34.0...
[INFO] testing cargo-semverver-0.34.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate cargo-semverver 0.34.0 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate cargo-semverver 0.34.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-semverver 0.34.0
[INFO] finished tweaking crates.io crate cargo-semverver 0.34.0
[INFO] tweaked toml for crates.io crate cargo-semverver 0.34.0 written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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 pretty_env_logger v0.3.1
[INFO] [stderr]   Downloaded crates-io-semverver v0.22.0
[INFO] [stderr]   Downloaded proptest v0.8.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c072575dd38b03a9e44c0cf143fdab527ffbf0925a33f663253206d138b3487a
[INFO] running `Command { std: "docker" "start" "-a" "c072575dd38b03a9e44c0cf143fdab527ffbf0925a33f663253206d138b3487a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c072575dd38b03a9e44c0cf143fdab527ffbf0925a33f663253206d138b3487a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c072575dd38b03a9e44c0cf143fdab527ffbf0925a33f663253206d138b3487a", kill_on_drop: false }`
[INFO] [stdout] c072575dd38b03a9e44c0cf143fdab527ffbf0925a33f663253206d138b3487a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3cf6040dc36803143cf83f6e60fe6a97430306fa036c64a25a5e341479225be
[INFO] running `Command { std: "docker" "start" "-a" "d3cf6040dc36803143cf83f6e60fe6a97430306fa036c64a25a5e341479225be", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling shell-escape v0.1.5
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling bytesize v1.1.0
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling home v0.3.4
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling sized-chunks v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling tar v0.4.37
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr] error: could not compile `object`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name object --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/object-0.26.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="archive"' --cfg 'feature="coff"' --cfg 'feature="elf"' --cfg 'feature="macho"' --cfg 'feature="pe"' --cfg 'feature="read_core"' --cfg 'feature="unaligned"' -C metadata=057c1c36e7150415 -C extra-filename=-057c1c36e7150415 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-2303f526a35aae07.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d3cf6040dc36803143cf83f6e60fe6a97430306fa036c64a25a5e341479225be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3cf6040dc36803143cf83f6e60fe6a97430306fa036c64a25a5e341479225be", kill_on_drop: false }`
[INFO] [stdout] d3cf6040dc36803143cf83f6e60fe6a97430306fa036c64a25a5e341479225be