[INFO] fetching crate ncount 0.2.14...
[INFO] testing ncount-0.2.14 against 1.49.0 for beta-1.50-1
[INFO] extracting crate ncount 0.2.14 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate ncount 0.2.14 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 ncount 0.2.14
[INFO] finished tweaking crates.io crate ncount 0.2.14
[INFO] tweaked toml for crates.io crate ncount 0.2.14 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate ncount 0.2.14 already has a lockfile, it will not be regenerated
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 523c6fd52ef64836dda6725ed7530331d1fe1af790c16f55a2a4907f2d2227e8
[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" "523c6fd52ef64836dda6725ed7530331d1fe1af790c16f55a2a4907f2d2227e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "523c6fd52ef64836dda6725ed7530331d1fe1af790c16f55a2a4907f2d2227e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "523c6fd52ef64836dda6725ed7530331d1fe1af790c16f55a2a4907f2d2227e8", kill_on_drop: false }`
[INFO] [stdout] 523c6fd52ef64836dda6725ed7530331d1fe1af790c16f55a2a4907f2d2227e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 72e880ba69bc4a24156051c8f588aab4eb78a3a27fcec33ebe79fd5cac39e51e
[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" "72e880ba69bc4a24156051c8f588aab4eb78a3a27fcec33ebe79fd5cac39e51e", kill_on_drop: false }`
[INFO] [stderr]    Compiling normal-paths v0.1.0
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]    Compiling structopt v0.3.15
[INFO] [stderr]    Compiling ncount v0.2.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.90s
[INFO] running `Command { std: "docker" "inspect" "72e880ba69bc4a24156051c8f588aab4eb78a3a27fcec33ebe79fd5cac39e51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72e880ba69bc4a24156051c8f588aab4eb78a3a27fcec33ebe79fd5cac39e51e", kill_on_drop: false }`
[INFO] [stdout] 72e880ba69bc4a24156051c8f588aab4eb78a3a27fcec33ebe79fd5cac39e51e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 87195cd88303a878e6ab269751e5bccd96928e584cf59e49d0938b7676f27521
[INFO] running `Command { std: "docker" "start" "-a" "87195cd88303a878e6ab269751e5bccd96928e584cf59e49d0938b7676f27521", kill_on_drop: false }`
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling ncount v0.2.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.03s
[INFO] running `Command { std: "docker" "inspect" "87195cd88303a878e6ab269751e5bccd96928e584cf59e49d0938b7676f27521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87195cd88303a878e6ab269751e5bccd96928e584cf59e49d0938b7676f27521", kill_on_drop: false }`
[INFO] [stdout] 87195cd88303a878e6ab269751e5bccd96928e584cf59e49d0938b7676f27521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 3c9856eb617c89bd99e15dd5c4c1492adcca140a2640b599e467f00c68d2e42d
[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" "3c9856eb617c89bd99e15dd5c4c1492adcca140a2640b599e467f00c68d2e42d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ncount-5aa93e48fb446484
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test opt::tests::empty_source_iter ... ok
[INFO] [stdout] test opt::tests::non_empty_source_iter ... ok
[INFO] [stdout] test collector::tests::stats_are_correct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3c9856eb617c89bd99e15dd5c4c1492adcca140a2640b599e467f00c68d2e42d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c9856eb617c89bd99e15dd5c4c1492adcca140a2640b599e467f00c68d2e42d", kill_on_drop: false }`
[INFO] [stdout] 3c9856eb617c89bd99e15dd5c4c1492adcca140a2640b599e467f00c68d2e42d