[INFO] fetching crate varu64 0.6.2...
[INFO] testing varu64-0.6.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate varu64 0.6.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate varu64 0.6.2 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 varu64 0.6.2
[INFO] finished tweaking crates.io crate varu64 0.6.2
[INFO] tweaked toml for crates.io crate varu64 0.6.2 written to /workspace/builds/worker-13/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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] 98752a7c39121d4d2d5b9db62e6847e03fc192e1afeec35b1e9bf6b39c007e62
[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" "98752a7c39121d4d2d5b9db62e6847e03fc192e1afeec35b1e9bf6b39c007e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98752a7c39121d4d2d5b9db62e6847e03fc192e1afeec35b1e9bf6b39c007e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98752a7c39121d4d2d5b9db62e6847e03fc192e1afeec35b1e9bf6b39c007e62", kill_on_drop: false }`
[INFO] [stdout] 98752a7c39121d4d2d5b9db62e6847e03fc192e1afeec35b1e9bf6b39c007e62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 14ef64b281a198e5993393f89da2e309c10b9d1d7ded226aff494b50794bdeaf
[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" "14ef64b281a198e5993393f89da2e309c10b9d1d7ded226aff494b50794bdeaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling varu64 v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "14ef64b281a198e5993393f89da2e309c10b9d1d7ded226aff494b50794bdeaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ef64b281a198e5993393f89da2e309c10b9d1d7ded226aff494b50794bdeaf", kill_on_drop: false }`
[INFO] [stdout] 14ef64b281a198e5993393f89da2e309c10b9d1d7ded226aff494b50794bdeaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stdout] 35c9da7e406e179067c12e40babfd2ec8a4a06cb104f88aefcc40d55ebd047af
[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" "35c9da7e406e179067c12e40babfd2ec8a4a06cb104f88aefcc40d55ebd047af", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling quickcheck v0.7.2
[INFO] [stderr]    Compiling varu64 v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.71s
[INFO] running `Command { std: "docker" "inspect" "35c9da7e406e179067c12e40babfd2ec8a4a06cb104f88aefcc40d55ebd047af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c9da7e406e179067c12e40babfd2ec8a4a06cb104f88aefcc40d55ebd047af", kill_on_drop: false }`
[INFO] [stdout] 35c9da7e406e179067c12e40babfd2ec8a4a06cb104f88aefcc40d55ebd047af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 076a25481720e1c4e6d3d37fdb69308257ebad9d28c2bd6edfc83f61e09a6f3c
[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" "076a25481720e1c4e6d3d37fdb69308257ebad9d28c2bd6edfc83f61e09a6f3c", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 5 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/varu64-3b9b4c3320b15601
[INFO] [stdout] test tests::fixtures ... ok
[INFO] [stdout] test nb::tests::test_decoder ... ok
[INFO] [stderr]    Doc-tests varu64
[INFO] [stdout] test nb::tests::test_length_value_encoder ... ok
[INFO] [stdout] test nb::tests::test_encoder ... ok
[INFO] [stdout] test nb::tests::test_length_value_decoder ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[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" "076a25481720e1c4e6d3d37fdb69308257ebad9d28c2bd6edfc83f61e09a6f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "076a25481720e1c4e6d3d37fdb69308257ebad9d28c2bd6edfc83f61e09a6f3c", kill_on_drop: false }`
[INFO] [stdout] 076a25481720e1c4e6d3d37fdb69308257ebad9d28c2bd6edfc83f61e09a6f3c