[INFO] fetching crate tasks-framework 0.1.0...
[INFO] checking tasks-framework-0.1.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate tasks-framework 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tasks-framework 0.1.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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-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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] ad7a40f1699936f3177ba1a1f5c1e7222ddfb33c382705a643c695b562ffce7d
[INFO] running `Command { std: "docker" "start" "-a" "ad7a40f1699936f3177ba1a1f5c1e7222ddfb33c382705a643c695b562ffce7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad7a40f1699936f3177ba1a1f5c1e7222ddfb33c382705a643c695b562ffce7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad7a40f1699936f3177ba1a1f5c1e7222ddfb33c382705a643c695b562ffce7d", kill_on_drop: false }`
[INFO] [stdout] ad7a40f1699936f3177ba1a1f5c1e7222ddfb33c382705a643c695b562ffce7d
[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=forbid" "-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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--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] 0d9576a529e2a8d0d64e772ba6ba1f01498ee5c8b71b244680d5c4b1cfa1e712
[INFO] running `Command { std: "docker" "start" "-a" "0d9576a529e2a8d0d64e772ba6ba1f01498ee5c8b71b244680d5c4b1cfa1e712", kill_on_drop: false }`
[INFO] [stderr]     Checking lock-free-stack v0.1.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking 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 dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "0d9576a529e2a8d0d64e772ba6ba1f01498ee5c8b71b244680d5c4b1cfa1e712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d9576a529e2a8d0d64e772ba6ba1f01498ee5c8b71b244680d5c4b1cfa1e712", kill_on_drop: false }`
[INFO] [stdout] 0d9576a529e2a8d0d64e772ba6ba1f01498ee5c8b71b244680d5c4b1cfa1e712