[INFO] fetching crate unsafe_unions 0.0.2...
[INFO] testing unsafe_unions-0.0.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate unsafe_unions 0.0.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate unsafe_unions 0.0.2 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 unsafe_unions 0.0.2
[INFO] finished tweaking crates.io crate unsafe_unions 0.0.2
[INFO] tweaked toml for crates.io crate unsafe_unions 0.0.2 written to /workspace/builds/worker-12/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] [stderr]     Blocking waiting for file lock on package cache
[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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 69b0dbdf16bea9921cc0140ccf073c1514b3c3aa0f994644301f8c459d852449
[INFO] running `Command { std: "docker" "start" "-a" "69b0dbdf16bea9921cc0140ccf073c1514b3c3aa0f994644301f8c459d852449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69b0dbdf16bea9921cc0140ccf073c1514b3c3aa0f994644301f8c459d852449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b0dbdf16bea9921cc0140ccf073c1514b3c3aa0f994644301f8c459d852449", kill_on_drop: false }`
[INFO] [stdout] 69b0dbdf16bea9921cc0140ccf073c1514b3c3aa0f994644301f8c459d852449
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 15f841af1c67448ec5fda6b3019888cd50b824f07ba5502b2f9ba7aa6dce5c8b
[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" "15f841af1c67448ec5fda6b3019888cd50b824f07ba5502b2f9ba7aa6dce5c8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling unsafe_unions v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "15f841af1c67448ec5fda6b3019888cd50b824f07ba5502b2f9ba7aa6dce5c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f841af1c67448ec5fda6b3019888cd50b824f07ba5502b2f9ba7aa6dce5c8b", kill_on_drop: false }`
[INFO] [stdout] 15f841af1c67448ec5fda6b3019888cd50b824f07ba5502b2f9ba7aa6dce5c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] 884448f8f2e93661fd0ec89f8d3499bb1657c6d861b3027c568b4aeedd3635f0
[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" "884448f8f2e93661fd0ec89f8d3499bb1657c6d861b3027c568b4aeedd3635f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling unsafe_unions v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> examples/untagged_value.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / unsafe_unions!{
[INFO] [stdout] 5  | |     union UntaggedValue: [u64; 3] {
[INFO] [stdout] 6  | |         nil: (),
[INFO] [stdout] 7  | |         boolean: bool,
[INFO] [stdout] ...  |
[INFO] [stdout] 11 | |     }
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "884448f8f2e93661fd0ec89f8d3499bb1657c6d861b3027c568b4aeedd3635f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884448f8f2e93661fd0ec89f8d3499bb1657c6d861b3027c568b4aeedd3635f0", kill_on_drop: false }`
[INFO] [stdout] 884448f8f2e93661fd0ec89f8d3499bb1657c6d861b3027c568b4aeedd3635f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 590e9a969f151b2a0d3938f9c75d4a0f4b96fa8b4b07c76531ad71cb0c93a457
[INFO] running `Command { std: "docker" "start" "-a" "590e9a969f151b2a0d3938f9c75d4a0f4b96fa8b4b07c76531ad71cb0c93a457", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> examples/untagged_value.rs:4:1
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 4  | / unsafe_unions!{
[INFO] [stdout] 
[INFO] [stderr] 5  | |     union UntaggedValue: [u64; 3] {
[INFO] [stderr] 6  | |         nil: (),
[INFO] [stderr] 7  | |         boolean: bool,
[INFO] [stderr] ...  |
[INFO] [stderr] 11 | |     }
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unsafe_unions-f6572327d200b4dc
[INFO] [stderr]    Doc-tests unsafe_unions
[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" "590e9a969f151b2a0d3938f9c75d4a0f4b96fa8b4b07c76531ad71cb0c93a457", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590e9a969f151b2a0d3938f9c75d4a0f4b96fa8b4b07c76531ad71cb0c93a457", kill_on_drop: false }`
[INFO] [stdout] 590e9a969f151b2a0d3938f9c75d4a0f4b96fa8b4b07c76531ad71cb0c93a457