[INFO] fetching crate proptest-quickcheck-interop 2.0.0...
[INFO] checking proptest-quickcheck-interop-2.0.0 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate proptest-quickcheck-interop 2.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate proptest-quickcheck-interop 2.0.0 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate proptest-quickcheck-interop 2.0.0
[INFO] finished tweaking crates.io crate proptest-quickcheck-interop 2.0.0
[INFO] tweaked toml for crates.io crate proptest-quickcheck-interop 2.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f9361fa850a95c073acc2df7b31de6034b4aad1b69c5db3accd81337d2517c6
[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" "7f9361fa850a95c073acc2df7b31de6034b4aad1b69c5db3accd81337d2517c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f9361fa850a95c073acc2df7b31de6034b4aad1b69c5db3accd81337d2517c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f9361fa850a95c073acc2df7b31de6034b4aad1b69c5db3accd81337d2517c6", kill_on_drop: false }`
[INFO] [stdout] 7f9361fa850a95c073acc2df7b31de6034b4aad1b69c5db3accd81337d2517c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e4f6dc5a00f5c1891e4588d1b9eba86936aa0ed29363b3894945d9a3f2e5a1a
[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" "6e4f6dc5a00f5c1891e4588d1b9eba86936aa0ed29363b3894945d9a3f2e5a1a", kill_on_drop: false }`
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking quickcheck v0.6.2
[INFO] [stderr]     Checking proptest v0.4.2
[INFO] [stderr]     Checking proptest-quickcheck-interop v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:202:19
[INFO] [stdout]     |
[INFO] [stdout] 202 |     shrinker: Box<Iterator<Item = A>>
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = A>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:229:35
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn new(curr: A, shrinker: Box<Iterator<Item = A>>) -> Self {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = A>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:202:19
[INFO] [stdout]     |
[INFO] [stdout] 202 |     shrinker: Box<Iterator<Item = A>>
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = A>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:229:35
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn new(curr: A, shrinker: Box<Iterator<Item = A>>) -> Self {
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = A>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.89s
[INFO] running `Command { std: "docker" "inspect" "6e4f6dc5a00f5c1891e4588d1b9eba86936aa0ed29363b3894945d9a3f2e5a1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e4f6dc5a00f5c1891e4588d1b9eba86936aa0ed29363b3894945d9a3f2e5a1a", kill_on_drop: false }`
[INFO] [stdout] 6e4f6dc5a00f5c1891e4588d1b9eba86936aa0ed29363b3894945d9a3f2e5a1a