[INFO] fetching crate ops-core 0.2.0...
[INFO] testing ops-core-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate ops-core 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ops-core 0.2.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ops-core 0.2.0
[INFO] finished tweaking crates.io crate ops-core 0.2.0
[INFO] tweaked toml for crates.io crate ops-core 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-01-01" "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] 982fc48001c5855625f3c277482f86f650aa9b6c6de1d1591f4f3f1e15d3c23b
[INFO] running `Command { std: "docker" "start" "-a" "982fc48001c5855625f3c277482f86f650aa9b6c6de1d1591f4f3f1e15d3c23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "982fc48001c5855625f3c277482f86f650aa9b6c6de1d1591f4f3f1e15d3c23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "982fc48001c5855625f3c277482f86f650aa9b6c6de1d1591f4f3f1e15d3c23b", kill_on_drop: false }`
[INFO] [stdout] 982fc48001c5855625f3c277482f86f650aa9b6c6de1d1591f4f3f1e15d3c23b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7402f7a1fbd00aa29f5eaa988a1b3d002cc8e76f254c32dd76811476d2da0e08
[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" "7402f7a1fbd00aa29f5eaa988a1b3d002cc8e76f254c32dd76811476d2da0e08", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling ops-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.67s
[INFO] running `Command { std: "docker" "inspect" "7402f7a1fbd00aa29f5eaa988a1b3d002cc8e76f254c32dd76811476d2da0e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7402f7a1fbd00aa29f5eaa988a1b3d002cc8e76f254c32dd76811476d2da0e08", kill_on_drop: false }`
[INFO] [stdout] 7402f7a1fbd00aa29f5eaa988a1b3d002cc8e76f254c32dd76811476d2da0e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-01-01" "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] 64a262b02bc3a18c76b9d4096df3f4de751683088dc5fc3b3f399cbb34041128
[INFO] running `Command { std: "docker" "start" "-a" "64a262b02bc3a18c76b9d4096df3f4de751683088dc5fc3b3f399cbb34041128", kill_on_drop: false }`
[INFO] [stderr]    Compiling ops-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "64a262b02bc3a18c76b9d4096df3f4de751683088dc5fc3b3f399cbb34041128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64a262b02bc3a18c76b9d4096df3f4de751683088dc5fc3b3f399cbb34041128", kill_on_drop: false }`
[INFO] [stdout] 64a262b02bc3a18c76b9d4096df3f4de751683088dc5fc3b3f399cbb34041128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d4a15e0ed1ffc46ea6a09dcab2e1f91d5f781de5022b53c01ce9f0b70319d9d2
[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" "d4a15e0ed1ffc46ea6a09dcab2e1f91d5f781de5022b53c01ce9f0b70319d9d2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ops_core-a37298b24b00b690
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ops-core
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d4a15e0ed1ffc46ea6a09dcab2e1f91d5f781de5022b53c01ce9f0b70319d9d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a15e0ed1ffc46ea6a09dcab2e1f91d5f781de5022b53c01ce9f0b70319d9d2", kill_on_drop: false }`
[INFO] [stdout] d4a15e0ed1ffc46ea6a09dcab2e1f91d5f781de5022b53c01ce9f0b70319d9d2