[INFO] fetching crate safe_index 0.9.6...
[INFO] testing safe_index-0.9.6 against 1.49.0 for beta-1.50-1
[INFO] extracting crate safe_index 0.9.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate safe_index 0.9.6 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 safe_index 0.9.6
[INFO] finished tweaking crates.io crate safe_index 0.9.6
[INFO] tweaked toml for crates.io crate safe_index 0.9.6 written to /workspace/builds/worker-6/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-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: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] 0b6e50d7d4e9fdd980e942a7b071ee83708f657996eb99c5a0307fd884429425
[INFO] running `Command { std: "docker" "start" "-a" "0b6e50d7d4e9fdd980e942a7b071ee83708f657996eb99c5a0307fd884429425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b6e50d7d4e9fdd980e942a7b071ee83708f657996eb99c5a0307fd884429425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b6e50d7d4e9fdd980e942a7b071ee83708f657996eb99c5a0307fd884429425", kill_on_drop: false }`
[INFO] [stdout] 0b6e50d7d4e9fdd980e942a7b071ee83708f657996eb99c5a0307fd884429425
[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=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] e9735c5da97d67044bb1e40eae4a62deba6232be003adab70c510e39a46f7c6d
[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" "e9735c5da97d67044bb1e40eae4a62deba6232be003adab70c510e39a46f7c6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling safe_index v0.9.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `Command { std: "docker" "inspect" "e9735c5da97d67044bb1e40eae4a62deba6232be003adab70c510e39a46f7c6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9735c5da97d67044bb1e40eae4a62deba6232be003adab70c510e39a46f7c6d", kill_on_drop: false }`
[INFO] [stdout] e9735c5da97d67044bb1e40eae4a62deba6232be003adab70c510e39a46f7c6d
[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=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] fd99459f8fc22e0e548d42e4128033402145827f3ffe5b2569358e90c7a78768
[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" "fd99459f8fc22e0e548d42e4128033402145827f3ffe5b2569358e90c7a78768", kill_on_drop: false }`
[INFO] [stderr]    Compiling safe_index v0.9.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "fd99459f8fc22e0e548d42e4128033402145827f3ffe5b2569358e90c7a78768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd99459f8fc22e0e548d42e4128033402145827f3ffe5b2569358e90c7a78768", kill_on_drop: false }`
[INFO] [stdout] fd99459f8fc22e0e548d42e4128033402145827f3ffe5b2569358e90c7a78768
[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=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] [stdout] 079c675b7101d536b8bcbf2d640a026f3731a7131f638ed9b33d3b47c7f811c7
[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" "079c675b7101d536b8bcbf2d640a026f3731a7131f638ed9b33d3b47c7f811c7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/safe_index-4d6f5eaacb641dd7
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test examples::clients::run ... ok
[INFO] [stdout] test examples::basic::run ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests safe_index
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 48) ... ok
[INFO] [stdout] test src/lib.rs - (line 79) ... ok
[INFO] [stdout] test src/lib.rs - (line 132) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/examples/clients.rs - examples::clients (line 3) ... ok
[INFO] [stdout] test src/examples/mod.rs - examples::basic (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "079c675b7101d536b8bcbf2d640a026f3731a7131f638ed9b33d3b47c7f811c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "079c675b7101d536b8bcbf2d640a026f3731a7131f638ed9b33d3b47c7f811c7", kill_on_drop: false }`
[INFO] [stdout] 079c675b7101d536b8bcbf2d640a026f3731a7131f638ed9b33d3b47c7f811c7