[INFO] fetching crate cargo 0.56.0...
[INFO] testing cargo-0.56.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate cargo 0.56.0 into /workspace/builds/worker-76/source
[INFO] validating manifest of crates.io crate cargo 0.56.0 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 0.56.0
[INFO] finished tweaking crates.io crate cargo 0.56.0
[INFO] tweaked toml for crates.io crate cargo 0.56.0 written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] crate crates.io crate cargo 0.56.0 already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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] df4a310bdb313f1b0817f393d3c86e4f55759035ea304b418d774937337169ee
[INFO] running `Command { std: "docker" "start" "-a" "df4a310bdb313f1b0817f393d3c86e4f55759035ea304b418d774937337169ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df4a310bdb313f1b0817f393d3c86e4f55759035ea304b418d774937337169ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df4a310bdb313f1b0817f393d3c86e4f55759035ea304b418d774937337169ee", kill_on_drop: false }`
[INFO] [stdout] df4a310bdb313f1b0817f393d3c86e4f55759035ea304b418d774937337169ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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] ee7eb601d166becb98a3d6b63f08041d9ef580671c6c3427a7b4433cd66eb3af
[INFO] running `Command { std: "docker" "start" "-a" "ee7eb601d166becb98a3d6b63f08041d9ef580671c6c3427a7b4433cd66eb3af", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling bytesize v1.1.0
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling im-rc v15.0.0
[INFO] [stderr]    Compiling vte v0.10.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling opener v0.5.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling tar v0.4.37
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling curl-sys v0.4.45+curl-7.78.0
[INFO] [stderr]    Compiling libgit2-sys v0.12.23+1.2.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling flate2 v1.0.21
[INFO] [stderr]    Compiling serde_ignored v0.1.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling cargo-platform v0.1.2
[INFO] [stderr] error: could not compile `clap`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name clap /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/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="ansi_term"' --cfg 'feature="atty"' --cfg 'feature="color"' --cfg 'feature="default"' --cfg 'feature="strsim"' --cfg 'feature="suggestions"' --cfg 'feature="vec_map"' -C metadata=c52738d29c412642 -C extra-filename=-c52738d29c412642 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-7b95e091c56f4f65.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-1a562eaf8c64251d.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-610a73087f46ba3b.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-c9e2592dde3c5431.rmeta --extern textwrap=/opt/rustwide/target/debug/deps/libtextwrap-dcd1981df6974b46.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-b35e561241f87659.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-18b27ee44a5c9049.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" "ee7eb601d166becb98a3d6b63f08041d9ef580671c6c3427a7b4433cd66eb3af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee7eb601d166becb98a3d6b63f08041d9ef580671c6c3427a7b4433cd66eb3af", kill_on_drop: false }`
[INFO] [stdout] ee7eb601d166becb98a3d6b63f08041d9ef580671c6c3427a7b4433cd66eb3af