[INFO] fetching crate exo 0.1.13...
[INFO] testing exo-0.1.13 against 1.55.0 for beta-1.56-1
[INFO] extracting crate exo 0.1.13 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate exo 0.1.13 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exo 0.1.13
[INFO] finished tweaking crates.io crate exo 0.1.13
[INFO] tweaked toml for crates.io crate exo 0.1.13 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate exo 0.1.13 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1ee43de8b7479cfee0ba4b052f5bb0b03154b7dc7c031459061f570cdaa1b94
[INFO] running `Command { std: "docker" "start" "-a" "f1ee43de8b7479cfee0ba4b052f5bb0b03154b7dc7c031459061f570cdaa1b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1ee43de8b7479cfee0ba4b052f5bb0b03154b7dc7c031459061f570cdaa1b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ee43de8b7479cfee0ba4b052f5bb0b03154b7dc7c031459061f570cdaa1b94", kill_on_drop: false }`
[INFO] [stdout] f1ee43de8b7479cfee0ba4b052f5bb0b03154b7dc7c031459061f570cdaa1b94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65c64e33adce4da0af9d437c9c765ced114ea2177b71c53954304ad93714157f
[INFO] running `Command { std: "docker" "start" "-a" "65c64e33adce4da0af9d437c9c765ced114ea2177b71c53954304ad93714157f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling signature v1.3.1
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling bs58 v0.4.0
[INFO] [stderr]    Compiling asn1_der v0.7.4
[INFO] [stderr]    Compiling futures-timer v3.0.2
[INFO] [stderr]    Compiling target-lexicon v0.12.2
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling wasmparser v0.79.0
[INFO] [stderr]    Compiling capnp v0.14.3
[INFO] [stderr]    Compiling nohash-hasher v0.2.0
[INFO] [stderr]    Compiling protobuf v2.25.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling zstd-safe v4.1.1+zstd.1.5.0
[INFO] [stderr]    Compiling arc-swap v0.4.8
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling wasmtime-cache v0.29.0
[INFO] [stderr]    Compiling cpp_demangle v0.3.3
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling fastdivide v0.3.0
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling levenshtein_automata v0.2.1
[INFO] [stderr]    Compiling tantivy-bitpacker v0.1.0
[INFO] [stderr]    Compiling census v0.4.0
[INFO] [stderr]    Compiling number_prefix v0.4.0
[INFO] [stderr]    Compiling os_str_bytes v3.1.0
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling atomic v0.5.0
[INFO] [stderr]    Compiling blake2b_simd v0.5.11
[INFO] [stderr]    Compiling blake2s_simd v0.5.11
[INFO] [stderr]    Compiling twox-hash v1.6.1
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling ed25519 v1.2.0
[INFO] [stderr]    Compiling wast v37.0.0
[INFO] [stderr]    Compiling crc v2.0.0
[INFO] [stderr]    Compiling murmurhash32 v0.2.0
[INFO] [stderr]    Compiling http-body v0.4.3
[INFO] [stderr]    Compiling combine v4.6.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling cipher v0.3.0
[INFO] [stderr]    Compiling aead v0.4.2
[INFO] [stderr]    Compiling ordered-float v2.7.0
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling quicksink v0.1.2
[INFO] [stderr]    Compiling libsecp256k1-core v0.2.2
[INFO] [stderr]    Compiling bitpacking v0.8.4
[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling sha-1 v0.9.7
[INFO] [stderr]    Compiling hmac v0.8.1
[INFO] [stderr]    Compiling blake2 v0.9.1
[INFO] [stderr]    Compiling ctr v0.8.0
[INFO] [stderr]    Compiling aes v0.7.4
[INFO] [stderr]    Compiling capnpc v0.14.4
[INFO] [stderr]    Compiling polyval v0.5.2
[INFO] [stderr]    Compiling poly1305 v0.7.1
[INFO] [stderr]    Compiling lz4_flex v0.8.2
[INFO] [stderr]    Compiling hmac-drbg v0.3.0
[INFO] [stderr]    Compiling ghash v0.4.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr] error: could not compile `wasmparser`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name wasmparser --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wasmparser-0.79.0/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 -C metadata=af7bfa4bc917f288 -C extra-filename=-af7bfa4bc917f288 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "65c64e33adce4da0af9d437c9c765ced114ea2177b71c53954304ad93714157f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65c64e33adce4da0af9d437c9c765ced114ea2177b71c53954304ad93714157f", kill_on_drop: false }`
[INFO] [stdout] 65c64e33adce4da0af9d437c9c765ced114ea2177b71c53954304ad93714157f