[INFO] cloning repository https://github.com/dpapin1118/singleton-sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dpapin1118/singleton-sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpapin1118%2Fsingleton-sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpapin1118%2Fsingleton-sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2aefab7d99a23d8915b94aeacec074650b85a305
[INFO] checking dpapin1118/singleton-sample against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpapin1118%2Fsingleton-sample" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dpapin1118/singleton-sample on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dpapin1118/singleton-sample
[INFO] finished tweaking git repo https://github.com/dpapin1118/singleton-sample
[INFO] tweaked toml for git repo https://github.com/dpapin1118/singleton-sample written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dpapin1118/singleton-sample already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 445e0197886501b029538d2ee0183968fe0ef561b98b2b0da06edf81ee2692e8
[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" "445e0197886501b029538d2ee0183968fe0ef561b98b2b0da06edf81ee2692e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "445e0197886501b029538d2ee0183968fe0ef561b98b2b0da06edf81ee2692e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445e0197886501b029538d2ee0183968fe0ef561b98b2b0da06edf81ee2692e8", kill_on_drop: false }`
[INFO] [stdout] 445e0197886501b029538d2ee0183968fe0ef561b98b2b0da06edf81ee2692e8
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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] 6309a379b1ec10485edfa362a8621bf0667c5b52f1462dfea9c3b91b2fabdeec
[INFO] running `Command { std: "docker" "start" "-a" "6309a379b1ec10485edfa362a8621bf0667c5b52f1462dfea9c3b91b2fabdeec", kill_on_drop: false }`
[INFO] [stderr]     Checking singleton-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "6309a379b1ec10485edfa362a8621bf0667c5b52f1462dfea9c3b91b2fabdeec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6309a379b1ec10485edfa362a8621bf0667c5b52f1462dfea9c3b91b2fabdeec", kill_on_drop: false }`
[INFO] [stdout] 6309a379b1ec10485edfa362a8621bf0667c5b52f1462dfea9c3b91b2fabdeec