[INFO] fetching crate user_stable_vtable 0.3.0...
[INFO] testing user_stable_vtable-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate user_stable_vtable 0.3.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate user_stable_vtable 0.3.0 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 user_stable_vtable 0.3.0
[INFO] finished tweaking crates.io crate user_stable_vtable 0.3.0
[INFO] tweaked toml for crates.io crate user_stable_vtable 0.3.0 written to /workspace/builds/worker-13/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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17aba30bc9f836795531a8f9a4c4092e4f68fb8975740131dc7b58066ff35241
[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" "17aba30bc9f836795531a8f9a4c4092e4f68fb8975740131dc7b58066ff35241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17aba30bc9f836795531a8f9a4c4092e4f68fb8975740131dc7b58066ff35241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17aba30bc9f836795531a8f9a4c4092e4f68fb8975740131dc7b58066ff35241", kill_on_drop: false }`
[INFO] [stdout] 17aba30bc9f836795531a8f9a4c4092e4f68fb8975740131dc7b58066ff35241
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a02befd480557272484963e63eb86cf917955892eb8bfa82de1c0262b733efd
[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" "4a02befd480557272484963e63eb86cf917955892eb8bfa82de1c0262b733efd", kill_on_drop: false }`
[INFO] [stderr]    Compiling user_stable_vtable v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "4a02befd480557272484963e63eb86cf917955892eb8bfa82de1c0262b733efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a02befd480557272484963e63eb86cf917955892eb8bfa82de1c0262b733efd", kill_on_drop: false }`
[INFO] [stdout] 4a02befd480557272484963e63eb86cf917955892eb8bfa82de1c0262b733efd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.49.0" "test" "--frozen" "--no-run" "--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] ed5c7ee8494bd0681deb73eec53e58a2f1387d0045492f35743d1ad3b67ca26a
[INFO] running `Command { std: "docker" "start" "-a" "ed5c7ee8494bd0681deb73eec53e58a2f1387d0045492f35743d1ad3b67ca26a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling user_stable_vtable v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "ed5c7ee8494bd0681deb73eec53e58a2f1387d0045492f35743d1ad3b67ca26a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed5c7ee8494bd0681deb73eec53e58a2f1387d0045492f35743d1ad3b67ca26a", kill_on_drop: false }`
[INFO] [stdout] ed5c7ee8494bd0681deb73eec53e58a2f1387d0045492f35743d1ad3b67ca26a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.49.0" "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] 753cc7f3f0c4783ab7cdc65d4a259b881bbd65b1b6511b57327eb51f149ca155
[INFO] running `Command { std: "docker" "start" "-a" "753cc7f3f0c4783ab7cdc65d4a259b881bbd65b1b6511b57327eb51f149ca155", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/user_stable_vtable-a87ff7a853739884
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test some_tests::test_ref_none_is_null ... ok
[INFO] [stdout] test some_tests::test_nonnull_none_is_null ... ok
[INFO] [stderr]    Doc-tests user_stable_vtable
[INFO] [stdout] test some_tests::test_ref_some_is_not_null ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "753cc7f3f0c4783ab7cdc65d4a259b881bbd65b1b6511b57327eb51f149ca155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "753cc7f3f0c4783ab7cdc65d4a259b881bbd65b1b6511b57327eb51f149ca155", kill_on_drop: false }`
[INFO] [stdout] 753cc7f3f0c4783ab7cdc65d4a259b881bbd65b1b6511b57327eb51f149ca155