[INFO] fetching crate qrust 0.1.0...
[INFO] checking qrust-0.1.0 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate qrust 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate qrust 0.1.0 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qrust 0.1.0
[INFO] finished tweaking crates.io crate qrust 0.1.0
[INFO] tweaked toml for crates.io crate qrust 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate qrust 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7881e1adde23817c675038543dfe5e5f879ef92d3b7cb3f07892f7a37c53e553
[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" "7881e1adde23817c675038543dfe5e5f879ef92d3b7cb3f07892f7a37c53e553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7881e1adde23817c675038543dfe5e5f879ef92d3b7cb3f07892f7a37c53e553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7881e1adde23817c675038543dfe5e5f879ef92d3b7cb3f07892f7a37c53e553", kill_on_drop: false }`
[INFO] [stdout] 7881e1adde23817c675038543dfe5e5f879ef92d3b7cb3f07892f7a37c53e553
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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] fef401819fc864bde8f9bd0f431b9d3b3bb19bd1f76b8c63e3a4bb1141ab3ddf
[INFO] running `Command { std: "docker" "start" "-a" "fef401819fc864bde8f9bd0f431b9d3b3bb19bd1f76b8c63e3a4bb1141ab3ddf", kill_on_drop: false }`
[INFO] [stderr]     Checking qrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "fef401819fc864bde8f9bd0f431b9d3b3bb19bd1f76b8c63e3a4bb1141ab3ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef401819fc864bde8f9bd0f431b9d3b3bb19bd1f76b8c63e3a4bb1141ab3ddf", kill_on_drop: false }`
[INFO] [stdout] fef401819fc864bde8f9bd0f431b9d3b3bb19bd1f76b8c63e3a4bb1141ab3ddf