[INFO] cloning repository https://github.com/murilobsd/rust-observable
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/murilobsd/rust-observable" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmurilobsd%2Frust-observable", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmurilobsd%2Frust-observable'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c4b2ad0c04acad56129b1a5768ffa87cadf6f44
[INFO] checking murilobsd/rust-observable against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmurilobsd%2Frust-observable" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/murilobsd/rust-observable on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking git repo https://github.com/murilobsd/rust-observable
[INFO] finished tweaking git repo https://github.com/murilobsd/rust-observable
[INFO] tweaked toml for git repo https://github.com/murilobsd/rust-observable written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/murilobsd/rust-observable already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f06886eae589903e552fbbf7b6cf5235ae2922eaab7492682657fcfac01e530
[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" "8f06886eae589903e552fbbf7b6cf5235ae2922eaab7492682657fcfac01e530", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f06886eae589903e552fbbf7b6cf5235ae2922eaab7492682657fcfac01e530", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f06886eae589903e552fbbf7b6cf5235ae2922eaab7492682657fcfac01e530", kill_on_drop: false }`
[INFO] [stdout] 8f06886eae589903e552fbbf7b6cf5235ae2922eaab7492682657fcfac01e530
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] 6261c2f0e3a037e40b8dc1f5a07f5165a9bbd7db811b6d805f3855e0433027f7
[INFO] running `Command { std: "docker" "start" "-a" "6261c2f0e3a037e40b8dc1f5a07f5165a9bbd7db811b6d805f3855e0433027f7", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-observable v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "6261c2f0e3a037e40b8dc1f5a07f5165a9bbd7db811b6d805f3855e0433027f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6261c2f0e3a037e40b8dc1f5a07f5165a9bbd7db811b6d805f3855e0433027f7", kill_on_drop: false }`
[INFO] [stdout] 6261c2f0e3a037e40b8dc1f5a07f5165a9bbd7db811b6d805f3855e0433027f7