[INFO] fetching crate js 0.2.12...
[INFO] testing js-0.2.12 against 1.49.0 for beta-1.50-1
[INFO] extracting crate js 0.2.12 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate js 0.2.12 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate js 0.2.12
[INFO] finished tweaking crates.io crate js 0.2.12
[INFO] tweaked toml for crates.io crate js 0.2.12 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] bdd9b3dc53896b25cc73a0ad35c4b7348d542ce938b764da218c1252e6f9afc4
[INFO] running `Command { std: "docker" "start" "-a" "bdd9b3dc53896b25cc73a0ad35c4b7348d542ce938b764da218c1252e6f9afc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdd9b3dc53896b25cc73a0ad35c4b7348d542ce938b764da218c1252e6f9afc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdd9b3dc53896b25cc73a0ad35c4b7348d542ce938b764da218c1252e6f9afc4", kill_on_drop: false }`
[INFO] [stdout] bdd9b3dc53896b25cc73a0ad35c4b7348d542ce938b764da218c1252e6f9afc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", 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] 7f6be8c9bc9e8d86f780d6640454f7857a76cbda57efae6c198bfeb66a119437
[INFO] running `Command { std: "docker" "start" "-a" "7f6be8c9bc9e8d86f780d6640454f7857a76cbda57efae6c198bfeb66a119437", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.7.0
[INFO] [stderr]    Compiling callback v0.5.2
[INFO] [stderr]    Compiling js v0.2.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "7f6be8c9bc9e8d86f780d6640454f7857a76cbda57efae6c198bfeb66a119437", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f6be8c9bc9e8d86f780d6640454f7857a76cbda57efae6c198bfeb66a119437", kill_on_drop: false }`
[INFO] [stdout] 7f6be8c9bc9e8d86f780d6640454f7857a76cbda57efae6c198bfeb66a119437
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4770db32c8c58e23d0a67cc249c27d81cb80e007bb9350598510628b6369191c
[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" "4770db32c8c58e23d0a67cc249c27d81cb80e007bb9350598510628b6369191c", kill_on_drop: false }`
[INFO] [stderr]    Compiling js v0.2.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "4770db32c8c58e23d0a67cc249c27d81cb80e007bb9350598510628b6369191c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4770db32c8c58e23d0a67cc249c27d81cb80e007bb9350598510628b6369191c", kill_on_drop: false }`
[INFO] [stdout] 4770db32c8c58e23d0a67cc249c27d81cb80e007bb9350598510628b6369191c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 40c07d779045bdd38b5a78612756c5c2562c58687c9c09e1c72ec1143b367b2f
[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" "40c07d779045bdd38b5a78612756c5c2562c58687c9c09e1c72ec1143b367b2f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/js-95130a52f150f039
[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/js-95130a52f150f039` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "40c07d779045bdd38b5a78612756c5c2562c58687c9c09e1c72ec1143b367b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c07d779045bdd38b5a78612756c5c2562c58687c9c09e1c72ec1143b367b2f", kill_on_drop: false }`
[INFO] [stdout] 40c07d779045bdd38b5a78612756c5c2562c58687c9c09e1c72ec1143b367b2f