[INFO] cloning repository https://github.com/DedrickX/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DedrickX/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDedrickX%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDedrickX%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebba2c0787d9b24d0dbf46077e536eca4030fa65
[INFO] checking DedrickX/rust_playground against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDedrickX%2Frust_playground" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DedrickX/rust_playground on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DedrickX/rust_playground
[INFO] finished tweaking git repo https://github.com/DedrickX/rust_playground
[INFO] tweaked toml for git repo https://github.com/DedrickX/rust_playground written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/DedrickX/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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] be1e15edb3bfbcb907ca9b19f34d7a881d4823037555da19bbb43ccd6daf2d9f
[INFO] running `Command { std: "docker" "start" "-a" "be1e15edb3bfbcb907ca9b19f34d7a881d4823037555da19bbb43ccd6daf2d9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be1e15edb3bfbcb907ca9b19f34d7a881d4823037555da19bbb43ccd6daf2d9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be1e15edb3bfbcb907ca9b19f34d7a881d4823037555da19bbb43ccd6daf2d9f", kill_on_drop: false }`
[INFO] [stdout] be1e15edb3bfbcb907ca9b19f34d7a881d4823037555da19bbb43ccd6daf2d9f
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da4fbea3595707ef81bd37fac1c8c0dd3c977aa28c647ac4599341f21bc4d1b8
[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" "da4fbea3595707ef81bd37fac1c8c0dd3c977aa28c647ac4599341f21bc4d1b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.99s
[INFO] running `Command { std: "docker" "inspect" "da4fbea3595707ef81bd37fac1c8c0dd3c977aa28c647ac4599341f21bc4d1b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da4fbea3595707ef81bd37fac1c8c0dd3c977aa28c647ac4599341f21bc4d1b8", kill_on_drop: false }`
[INFO] [stdout] da4fbea3595707ef81bd37fac1c8c0dd3c977aa28c647ac4599341f21bc4d1b8