[INFO] fetching crate web_canvas 0.0.6...
[INFO] testing web_canvas-0.0.6 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate web_canvas 0.0.6 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate web_canvas 0.0.6 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate web_canvas 0.0.6
[INFO] finished tweaking crates.io crate web_canvas 0.0.6
[INFO] tweaked toml for crates.io crate web_canvas 0.0.6 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5008687e07f49785213263651622ae0f401742e37e7062aae59bd1c5918cf151
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5008687e07f49785213263651622ae0f401742e37e7062aae59bd1c5918cf151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5008687e07f49785213263651622ae0f401742e37e7062aae59bd1c5918cf151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5008687e07f49785213263651622ae0f401742e37e7062aae59bd1c5918cf151", kill_on_drop: false }`
[INFO] [stdout] 5008687e07f49785213263651622ae0f401742e37e7062aae59bd1c5918cf151
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da84f3065cb505d52120f46c02c3a103e2a5e4fea048af333bd30c739092957a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "da84f3065cb505d52120f46c02c3a103e2a5e4fea048af333bd30c739092957a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling cty v0.2.1
[INFO] [stderr]    Compiling spin v0.7.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling callback v0.5.2
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling js v0.2.12
[INFO] [stderr]    Compiling web_canvas v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "da84f3065cb505d52120f46c02c3a103e2a5e4fea048af333bd30c739092957a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da84f3065cb505d52120f46c02c3a103e2a5e4fea048af333bd30c739092957a", kill_on_drop: false }`
[INFO] [stdout] da84f3065cb505d52120f46c02c3a103e2a5e4fea048af333bd30c739092957a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 571b8cd74a9fedf4d4bfefeff3a63b7ffcb1b52f8111cde3f52c411c23fb2702
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "571b8cd74a9fedf4d4bfefeff3a63b7ffcb1b52f8111cde3f52c411c23fb2702", kill_on_drop: false }`
[INFO] [stderr]    Compiling web_canvas v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "571b8cd74a9fedf4d4bfefeff3a63b7ffcb1b52f8111cde3f52c411c23fb2702", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "571b8cd74a9fedf4d4bfefeff3a63b7ffcb1b52f8111cde3f52c411c23fb2702", kill_on_drop: false }`
[INFO] [stdout] 571b8cd74a9fedf4d4bfefeff3a63b7ffcb1b52f8111cde3f52c411c23fb2702
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 734aff9f280f6f7cb3f81dc642af5f9d23ef480fda45f563c355a7e66c7c3f53
[INFO] running `Command { std: "docker" "start" "-a" "734aff9f280f6f7cb3f81dc642af5f9d23ef480fda45f563c355a7e66c7c3f53", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/web_canvas-8663d4c480465f3d
[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/web_canvas-8663d4c480465f3d` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "734aff9f280f6f7cb3f81dc642af5f9d23ef480fda45f563c355a7e66c7c3f53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "734aff9f280f6f7cb3f81dc642af5f9d23ef480fda45f563c355a7e66c7c3f53", kill_on_drop: false }`
[INFO] [stdout] 734aff9f280f6f7cb3f81dc642af5f9d23ef480fda45f563c355a7e66c7c3f53