[INFO] fetching crate d-_-b 0.0.1...
[INFO] testing d-_-b-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate d-_-b 0.0.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate d-_-b 0.0.1 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 d-_-b 0.0.1
[INFO] finished tweaking crates.io crate d-_-b 0.0.1
[INFO] tweaked toml for crates.io crate d-_-b 0.0.1 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: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] 6fb29284e3a50bb5d736a83cb261cf31f218011a7c146db49ac4dcd92a30733c
[INFO] running `Command { std: "docker" "start" "-a" "6fb29284e3a50bb5d736a83cb261cf31f218011a7c146db49ac4dcd92a30733c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fb29284e3a50bb5d736a83cb261cf31f218011a7c146db49ac4dcd92a30733c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fb29284e3a50bb5d736a83cb261cf31f218011a7c146db49ac4dcd92a30733c", kill_on_drop: false }`
[INFO] [stdout] 6fb29284e3a50bb5d736a83cb261cf31f218011a7c146db49ac4dcd92a30733c
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdd1bd0ee18bb28350190c097cce8df722cdbe696c3c65a358154d8ac5f1e353
[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" "cdd1bd0ee18bb28350190c097cce8df722cdbe696c3c65a358154d8ac5f1e353", kill_on_drop: false }`
[INFO] [stderr]    Compiling d-_-b v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "cdd1bd0ee18bb28350190c097cce8df722cdbe696c3c65a358154d8ac5f1e353", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdd1bd0ee18bb28350190c097cce8df722cdbe696c3c65a358154d8ac5f1e353", kill_on_drop: false }`
[INFO] [stdout] cdd1bd0ee18bb28350190c097cce8df722cdbe696c3c65a358154d8ac5f1e353
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 734237a38db824b74e136ef9ebecdccc4c1f1c793a5d59e05c22b4dc1b3ccbd4
[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" "734237a38db824b74e136ef9ebecdccc4c1f1c793a5d59e05c22b4dc1b3ccbd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling d-_-b v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "734237a38db824b74e136ef9ebecdccc4c1f1c793a5d59e05c22b4dc1b3ccbd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "734237a38db824b74e136ef9ebecdccc4c1f1c793a5d59e05c22b4dc1b3ccbd4", kill_on_drop: false }`
[INFO] [stdout] 734237a38db824b74e136ef9ebecdccc4c1f1c793a5d59e05c22b4dc1b3ccbd4
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a319bb0366744cb23e6e6e58837e265480b99bd390446d4e359f433c36db2193
[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" "a319bb0366744cb23e6e6e58837e265480b99bd390446d4e359f433c36db2193", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/d___b-b6fdf223870271b8
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests d-_-b
[INFO] [stdout] test result: ok. 0 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" "a319bb0366744cb23e6e6e58837e265480b99bd390446d4e359f433c36db2193", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a319bb0366744cb23e6e6e58837e265480b99bd390446d4e359f433c36db2193", kill_on_drop: false }`
[INFO] [stdout] a319bb0366744cb23e6e6e58837e265480b99bd390446d4e359f433c36db2193