[INFO] fetching crate prime 0.0.0...
[INFO] checking prime-0.0.0 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate prime 0.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate prime 0.0.0 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prime 0.0.0
[INFO] finished tweaking crates.io crate prime 0.0.0
[INFO] tweaked toml for crates.io crate prime 0.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate prime 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a5889ae0c375f5f792c4b9d8ab81aea5347a2510ae26dddfbb2ec851e13157d
[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" "5a5889ae0c375f5f792c4b9d8ab81aea5347a2510ae26dddfbb2ec851e13157d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a5889ae0c375f5f792c4b9d8ab81aea5347a2510ae26dddfbb2ec851e13157d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a5889ae0c375f5f792c4b9d8ab81aea5347a2510ae26dddfbb2ec851e13157d", kill_on_drop: false }`
[INFO] [stdout] 5a5889ae0c375f5f792c4b9d8ab81aea5347a2510ae26dddfbb2ec851e13157d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b19033679e2edab253bee2a616df4e53cc339c256f7455c69fe935da8b889ea0
[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" "b19033679e2edab253bee2a616df4e53cc339c256f7455c69fe935da8b889ea0", kill_on_drop: false }`
[INFO] [stderr]     Checking prime v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "b19033679e2edab253bee2a616df4e53cc339c256f7455c69fe935da8b889ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19033679e2edab253bee2a616df4e53cc339c256f7455c69fe935da8b889ea0", kill_on_drop: false }`
[INFO] [stdout] b19033679e2edab253bee2a616df4e53cc339c256f7455c69fe935da8b889ea0