[INFO] fetching crate locker 0.4.3...
[INFO] testing locker-0.4.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate locker 0.4.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate locker 0.4.3 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 locker 0.4.3
[INFO] finished tweaking crates.io crate locker 0.4.3
[INFO] tweaked toml for crates.io crate locker 0.4.3 written to /workspace/builds/worker-2/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-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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19df5389532bdb584cd2349643ae587c5269bc2d01be01e1ae5ea113ecda88c3
[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" "19df5389532bdb584cd2349643ae587c5269bc2d01be01e1ae5ea113ecda88c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19df5389532bdb584cd2349643ae587c5269bc2d01be01e1ae5ea113ecda88c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19df5389532bdb584cd2349643ae587c5269bc2d01be01e1ae5ea113ecda88c3", kill_on_drop: false }`
[INFO] [stdout] 19df5389532bdb584cd2349643ae587c5269bc2d01be01e1ae5ea113ecda88c3
[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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67350bcf778552ba1573b448c8828448a6b863bacb9989c309ce12d52346bbdb
[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" "67350bcf778552ba1573b448c8828448a6b863bacb9989c309ce12d52346bbdb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling locker v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.01s
[INFO] running `Command { std: "docker" "inspect" "67350bcf778552ba1573b448c8828448a6b863bacb9989c309ce12d52346bbdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67350bcf778552ba1573b448c8828448a6b863bacb9989c309ce12d52346bbdb", kill_on_drop: false }`
[INFO] [stdout] 67350bcf778552ba1573b448c8828448a6b863bacb9989c309ce12d52346bbdb
[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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b3407cd2d05c43348a0b6baeb6bb286bba97121c727ed68a0bdad494ec8d802
[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" "6b3407cd2d05c43348a0b6baeb6bb286bba97121c727ed68a0bdad494ec8d802", kill_on_drop: false }`
[INFO] [stderr]    Compiling locker v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `Command { std: "docker" "inspect" "6b3407cd2d05c43348a0b6baeb6bb286bba97121c727ed68a0bdad494ec8d802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3407cd2d05c43348a0b6baeb6bb286bba97121c727ed68a0bdad494ec8d802", kill_on_drop: false }`
[INFO] [stdout] 6b3407cd2d05c43348a0b6baeb6bb286bba97121c727ed68a0bdad494ec8d802
[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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8fbaca32b8dc871fb2c69b5ff16d10fb9e18dae38ca622162a76ab6140b0b7fc
[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" "8fbaca32b8dc871fb2c69b5ff16d10fb9e18dae38ca622162a76ab6140b0b7fc", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/locker-ed4d5f0416347c15
[INFO] [stdout] test non_blocking::tests::test_async_default_locker ... ok
[INFO] [stdout] test non_blocking::tests::test_async_locker ... 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 locker
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/non_blocking.rs - non_blocking::AsyncLocker<K, V>::get_mutex (line 34) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8fbaca32b8dc871fb2c69b5ff16d10fb9e18dae38ca622162a76ab6140b0b7fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fbaca32b8dc871fb2c69b5ff16d10fb9e18dae38ca622162a76ab6140b0b7fc", kill_on_drop: false }`
[INFO] [stdout] 8fbaca32b8dc871fb2c69b5ff16d10fb9e18dae38ca622162a76ab6140b0b7fc