[INFO] fetching crate webcomponent 0.6.2...
[INFO] testing webcomponent-0.6.2 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate webcomponent 0.6.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate webcomponent 0.6.2 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate webcomponent 0.6.2
[INFO] finished tweaking crates.io crate webcomponent 0.6.2
[INFO] tweaked toml for crates.io crate webcomponent 0.6.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] [stderr]   Downloaded js v0.3.0
[INFO] [stderr]   Downloaded callback v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa9d9873b9aac6d58700f4270d50d3178ae417439f7c288dd8160f51927a76ec
[INFO] running `Command { std: "docker" "start" "-a" "aa9d9873b9aac6d58700f4270d50d3178ae417439f7c288dd8160f51927a76ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa9d9873b9aac6d58700f4270d50d3178ae417439f7c288dd8160f51927a76ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa9d9873b9aac6d58700f4270d50d3178ae417439f7c288dd8160f51927a76ec", kill_on_drop: false }`
[INFO] [stdout] aa9d9873b9aac6d58700f4270d50d3178ae417439f7c288dd8160f51927a76ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 173e487bc7b32d4891e79c185de61fbe70a4069fe450aec6620bfed099a5e406
[INFO] running `Command { std: "docker" "start" "-a" "173e487bc7b32d4891e79c185de61fbe70a4069fe450aec6620bfed099a5e406", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling spin v0.7.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling callback v0.5.3
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling js v0.3.0
[INFO] [stderr]    Compiling webcomponent v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.56s
[INFO] running `Command { std: "docker" "inspect" "173e487bc7b32d4891e79c185de61fbe70a4069fe450aec6620bfed099a5e406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "173e487bc7b32d4891e79c185de61fbe70a4069fe450aec6620bfed099a5e406", kill_on_drop: false }`
[INFO] [stdout] 173e487bc7b32d4891e79c185de61fbe70a4069fe450aec6620bfed099a5e406
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b074d8cec4b1e559754751ca8e07715f4eafecdae0b6da27b953fe62673a9c7
[INFO] running `Command { std: "docker" "start" "-a" "6b074d8cec4b1e559754751ca8e07715f4eafecdae0b6da27b953fe62673a9c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling webcomponent v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "6b074d8cec4b1e559754751ca8e07715f4eafecdae0b6da27b953fe62673a9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b074d8cec4b1e559754751ca8e07715f4eafecdae0b6da27b953fe62673a9c7", kill_on_drop: false }`
[INFO] [stdout] 6b074d8cec4b1e559754751ca8e07715f4eafecdae0b6da27b953fe62673a9c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 16a9f5c9319c7a6f68ebc964b38fc6ee05177c5b0a41b811b91a383798bf97f4
[INFO] running `Command { std: "docker" "start" "-a" "16a9f5c9319c7a6f68ebc964b38fc6ee05177c5b0a41b811b91a383798bf97f4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/webcomponent-ac99f460c4939630)
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/webcomponent-ac99f460c4939630` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "16a9f5c9319c7a6f68ebc964b38fc6ee05177c5b0a41b811b91a383798bf97f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16a9f5c9319c7a6f68ebc964b38fc6ee05177c5b0a41b811b91a383798bf97f4", kill_on_drop: false }`
[INFO] [stdout] 16a9f5c9319c7a6f68ebc964b38fc6ee05177c5b0a41b811b91a383798bf97f4