[INFO] cloning repository https://github.com/alreadyExisted/rust_guessing_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alreadyExisted/rust_guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FalreadyExisted%2Frust_guessing_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FalreadyExisted%2Frust_guessing_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8036e3c13d985569f019ce10d91dc011970b0abb
[INFO] checking alreadyExisted/rust_guessing_game against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FalreadyExisted%2Frust_guessing_game" "/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/alreadyExisted/rust_guessing_game on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alreadyExisted/rust_guessing_game
[INFO] finished tweaking git repo https://github.com/alreadyExisted/rust_guessing_game
[INFO] tweaked toml for git repo https://github.com/alreadyExisted/rust_guessing_game written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/alreadyExisted/rust_guessing_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f6ada9ae8069f5764a6fb49a979a52f784d786838b2b4be76d4622102f2d495
[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" "1f6ada9ae8069f5764a6fb49a979a52f784d786838b2b4be76d4622102f2d495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f6ada9ae8069f5764a6fb49a979a52f784d786838b2b4be76d4622102f2d495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f6ada9ae8069f5764a6fb49a979a52f784d786838b2b4be76d4622102f2d495", kill_on_drop: false }`
[INFO] [stdout] 1f6ada9ae8069f5764a6fb49a979a52f784d786838b2b4be76d4622102f2d495
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32f3f95939c685970669e9e3f1511012f0931d3451baf5f03e5f23da032cbfe4
[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" "32f3f95939c685970669e9e3f1511012f0931d3451baf5f03e5f23da032cbfe4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.39s
[INFO] running `Command { std: "docker" "inspect" "32f3f95939c685970669e9e3f1511012f0931d3451baf5f03e5f23da032cbfe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32f3f95939c685970669e9e3f1511012f0931d3451baf5f03e5f23da032cbfe4", kill_on_drop: false }`
[INFO] [stdout] 32f3f95939c685970669e9e3f1511012f0931d3451baf5f03e5f23da032cbfe4