[INFO] fetching crate ci-testing-kbartush 1.5.5...
[INFO] testing ci-testing-kbartush-1.5.5 against 1.49.0 for beta-1.50-1
[INFO] extracting crate ci-testing-kbartush 1.5.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ci-testing-kbartush 1.5.5 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 ci-testing-kbartush 1.5.5
[INFO] finished tweaking crates.io crate ci-testing-kbartush 1.5.5
[INFO] tweaked toml for crates.io crate ci-testing-kbartush 1.5.5 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] 00c449cfea2561d7f8502b1aeed3835f949b17bedbb8696bf20114aa1b14f069
[INFO] running `Command { std: "docker" "start" "-a" "00c449cfea2561d7f8502b1aeed3835f949b17bedbb8696bf20114aa1b14f069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00c449cfea2561d7f8502b1aeed3835f949b17bedbb8696bf20114aa1b14f069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00c449cfea2561d7f8502b1aeed3835f949b17bedbb8696bf20114aa1b14f069", kill_on_drop: false }`
[INFO] [stdout] 00c449cfea2561d7f8502b1aeed3835f949b17bedbb8696bf20114aa1b14f069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9b761ecb8993704333caf25989a21f8981706d94fb7028dd3d5aeadbf3a7214
[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" "f9b761ecb8993704333caf25989a21f8981706d94fb7028dd3d5aeadbf3a7214", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling xdr-rs-serialize v0.1.0-alpha
[INFO] [stderr]    Compiling xdr-rs-serialize-derive v0.1.0-alpha
[INFO] [stderr]    Compiling ci-testing-kbartush v1.5.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.67s
[INFO] running `Command { std: "docker" "inspect" "f9b761ecb8993704333caf25989a21f8981706d94fb7028dd3d5aeadbf3a7214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9b761ecb8993704333caf25989a21f8981706d94fb7028dd3d5aeadbf3a7214", kill_on_drop: false }`
[INFO] [stdout] f9b761ecb8993704333caf25989a21f8981706d94fb7028dd3d5aeadbf3a7214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd0756d5075cf688802c2d3200ef8170c4027fa4de6a847f753f66d7475fff88
[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" "cd0756d5075cf688802c2d3200ef8170c4027fa4de6a847f753f66d7475fff88", kill_on_drop: false }`
[INFO] [stderr]    Compiling ci-testing-kbartush v1.5.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "cd0756d5075cf688802c2d3200ef8170c4027fa4de6a847f753f66d7475fff88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd0756d5075cf688802c2d3200ef8170c4027fa4de6a847f753f66d7475fff88", kill_on_drop: false }`
[INFO] [stdout] cd0756d5075cf688802c2d3200ef8170c4027fa4de6a847f753f66d7475fff88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a14ef9b2e63581c77942bc316b2507cd866c4f6ea2dacbcf91d4d5c7e38efa7
[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" "2a14ef9b2e63581c77942bc316b2507cd866c4f6ea2dacbcf91d4d5c7e38efa7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ci_testing_kbartush-20108bbfb360ffe7
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ci-testing-kbartush
[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" "2a14ef9b2e63581c77942bc316b2507cd866c4f6ea2dacbcf91d4d5c7e38efa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a14ef9b2e63581c77942bc316b2507cd866c4f6ea2dacbcf91d4d5c7e38efa7", kill_on_drop: false }`
[INFO] [stdout] 2a14ef9b2e63581c77942bc316b2507cd866c4f6ea2dacbcf91d4d5c7e38efa7