[INFO] fetching crate concurrent-kv 0.2.1...
[INFO] testing concurrent-kv-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate concurrent-kv 0.2.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate concurrent-kv 0.2.1 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 concurrent-kv 0.2.1
[INFO] finished tweaking crates.io crate concurrent-kv 0.2.1
[INFO] tweaked toml for crates.io crate concurrent-kv 0.2.1 written to /workspace/builds/worker-10/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 5488adda2650935c9914791160cd856070f6d2f8ce6f29ab180fd1f9842d4eaf
[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" "5488adda2650935c9914791160cd856070f6d2f8ce6f29ab180fd1f9842d4eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5488adda2650935c9914791160cd856070f6d2f8ce6f29ab180fd1f9842d4eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5488adda2650935c9914791160cd856070f6d2f8ce6f29ab180fd1f9842d4eaf", kill_on_drop: false }`
[INFO] [stdout] 5488adda2650935c9914791160cd856070f6d2f8ce6f29ab180fd1f9842d4eaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 9a861d8c4f141d8cfb745d40ca9e7e0cfcecaf628b1dd7a9b943def2026c6d60
[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" "9a861d8c4f141d8cfb745d40ca9e7e0cfcecaf628b1dd7a9b943def2026c6d60", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrent-kv v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "9a861d8c4f141d8cfb745d40ca9e7e0cfcecaf628b1dd7a9b943def2026c6d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a861d8c4f141d8cfb745d40ca9e7e0cfcecaf628b1dd7a9b943def2026c6d60", kill_on_drop: false }`
[INFO] [stdout] 9a861d8c4f141d8cfb745d40ca9e7e0cfcecaf628b1dd7a9b943def2026c6d60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 45a2247df66ddfa3f471233f80dbc15ba54b3bc36f3de04ec5219ed03ab61346
[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" "45a2247df66ddfa3f471233f80dbc15ba54b3bc36f3de04ec5219ed03ab61346", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrent-kv v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `Command { std: "docker" "inspect" "45a2247df66ddfa3f471233f80dbc15ba54b3bc36f3de04ec5219ed03ab61346", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45a2247df66ddfa3f471233f80dbc15ba54b3bc36f3de04ec5219ed03ab61346", kill_on_drop: false }`
[INFO] [stdout] 45a2247df66ddfa3f471233f80dbc15ba54b3bc36f3de04ec5219ed03ab61346
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 44ffd534dcacc6a8539d96c5464d8550e10107c4b0a3158c325327d2b6a553db
[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" "44ffd534dcacc6a8539d96c5464d8550e10107c4b0a3158c325327d2b6a553db", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/concurrent_kv-4624b51992767460
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::render_all_values ... ok
[INFO] [stdout] test tests::old_value_replace_same_key ... ok
[INFO] [stdout] test tests::basic ... ok
[INFO] [stdout] test tests::old_value_insert_new_key ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concurrent-kv
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 29) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "44ffd534dcacc6a8539d96c5464d8550e10107c4b0a3158c325327d2b6a553db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44ffd534dcacc6a8539d96c5464d8550e10107c4b0a3158c325327d2b6a553db", kill_on_drop: false }`
[INFO] [stdout] 44ffd534dcacc6a8539d96c5464d8550e10107c4b0a3158c325327d2b6a553db