[INFO] fetching crate tasks-framework 0.1.0...
[INFO] building tasks-framework-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate tasks-framework 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate tasks-framework 0.1.0 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 tasks-framework 0.1.0
[INFO] finished tweaking crates.io crate tasks-framework 0.1.0
[INFO] tweaked toml for crates.io crate tasks-framework 0.1.0 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 0899819d06472c34baf69753f5e173aa6e104c0852301f51734fd99de0a2b666
[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" "0899819d06472c34baf69753f5e173aa6e104c0852301f51734fd99de0a2b666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0899819d06472c34baf69753f5e173aa6e104c0852301f51734fd99de0a2b666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0899819d06472c34baf69753f5e173aa6e104c0852301f51734fd99de0a2b666", kill_on_drop: false }`
[INFO] [stdout] 0899819d06472c34baf69753f5e173aa6e104c0852301f51734fd99de0a2b666
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] f6bafa7ed53f306ded904f69952fae927a364650926b62f45663be24654ed38f
[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" "f6bafa7ed53f306ded904f69952fae927a364650926b62f45663be24654ed38f", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock-free-stack v0.1.1
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling tasks-framework v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "f6bafa7ed53f306ded904f69952fae927a364650926b62f45663be24654ed38f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6bafa7ed53f306ded904f69952fae927a364650926b62f45663be24654ed38f", kill_on_drop: false }`
[INFO] [stdout] f6bafa7ed53f306ded904f69952fae927a364650926b62f45663be24654ed38f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 4c04a839fc8588d59034b5fc4f47f2afa9339f423279192e96789ce2d7d54f6d
[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" "4c04a839fc8588d59034b5fc4f47f2afa9339f423279192e96789ce2d7d54f6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling tasks-framework v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> tests/tasks.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     for i in 0 .. 10 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "4c04a839fc8588d59034b5fc4f47f2afa9339f423279192e96789ce2d7d54f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c04a839fc8588d59034b5fc4f47f2afa9339f423279192e96789ce2d7d54f6d", kill_on_drop: false }`
[INFO] [stdout] 4c04a839fc8588d59034b5fc4f47f2afa9339f423279192e96789ce2d7d54f6d