[INFO] fetching crate webcomponent 0.6.2...
[INFO] testing webcomponent-0.6.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate webcomponent 0.6.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate webcomponent 0.6.2 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 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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 235b29e3da92d3cba390b8d36b0e18433abdc47ed4b2399aaed8492b4db62f5e
[INFO] running `Command { std: "docker" "start" "-a" "235b29e3da92d3cba390b8d36b0e18433abdc47ed4b2399aaed8492b4db62f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "235b29e3da92d3cba390b8d36b0e18433abdc47ed4b2399aaed8492b4db62f5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "235b29e3da92d3cba390b8d36b0e18433abdc47ed4b2399aaed8492b4db62f5e", kill_on_drop: false }`
[INFO] [stdout] 235b29e3da92d3cba390b8d36b0e18433abdc47ed4b2399aaed8492b4db62f5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 28f7aee5eede84040b21c3482cb0fcf13807fb6bcc557c5a09e82697581a86d8
[INFO] running `Command { std: "docker" "start" "-a" "28f7aee5eede84040b21c3482cb0fcf13807fb6bcc557c5a09e82697581a86d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cty v0.2.1
[INFO] [stderr]    Compiling spin v0.7.1
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling callback v0.5.3
[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 1.78s
[INFO] running `Command { std: "docker" "inspect" "28f7aee5eede84040b21c3482cb0fcf13807fb6bcc557c5a09e82697581a86d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f7aee5eede84040b21c3482cb0fcf13807fb6bcc557c5a09e82697581a86d8", kill_on_drop: false }`
[INFO] [stdout] 28f7aee5eede84040b21c3482cb0fcf13807fb6bcc557c5a09e82697581a86d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de1f9f877655a534b8c2ceed718315ba1364bebba831cdb1bc21744fce59987f
[INFO] running `Command { std: "docker" "start" "-a" "de1f9f877655a534b8c2ceed718315ba1364bebba831cdb1bc21744fce59987f", kill_on_drop: false }`
[INFO] [stderr]    Compiling webcomponent v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "de1f9f877655a534b8c2ceed718315ba1364bebba831cdb1bc21744fce59987f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de1f9f877655a534b8c2ceed718315ba1364bebba831cdb1bc21744fce59987f", kill_on_drop: false }`
[INFO] [stdout] de1f9f877655a534b8c2ceed718315ba1364bebba831cdb1bc21744fce59987f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1086952f6ef8ab048ada0feb04c1de74d4f41877d98d21e5af54e4967f21ff35
[INFO] running `Command { std: "docker" "start" "-a" "1086952f6ef8ab048ada0feb04c1de74d4f41877d98d21e5af54e4967f21ff35", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/webcomponent-bcef9ba9f30a4ccf)
[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-bcef9ba9f30a4ccf` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "1086952f6ef8ab048ada0feb04c1de74d4f41877d98d21e5af54e4967f21ff35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1086952f6ef8ab048ada0feb04c1de74d4f41877d98d21e5af54e4967f21ff35", kill_on_drop: false }`
[INFO] [stdout] 1086952f6ef8ab048ada0feb04c1de74d4f41877d98d21e5af54e4967f21ff35