[INFO] cloning repository https://github.com/raghavendra-nataraj/rustling-solution
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raghavendra-nataraj/rustling-solution" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraghavendra-nataraj%2Frustling-solution", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraghavendra-nataraj%2Frustling-solution'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ea9e790fe1611836d83b83a64083ab9f45c8ee0
[INFO] checking raghavendra-nataraj/rustling-solution against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraghavendra-nataraj%2Frustling-solution" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raghavendra-nataraj/rustling-solution on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/raghavendra-nataraj/rustling-solution
[INFO] finished tweaking git repo https://github.com/raghavendra-nataraj/rustling-solution
[INFO] tweaked toml for git repo https://github.com/raghavendra-nataraj/rustling-solution written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/raghavendra-nataraj/rustling-solution already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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] 5d1237fea56e686398043d5b34aec4eadf3a0ee73d43e4bd56dbfec1efcc3672
[INFO] running `Command { std: "docker" "start" "-a" "5d1237fea56e686398043d5b34aec4eadf3a0ee73d43e4bd56dbfec1efcc3672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d1237fea56e686398043d5b34aec4eadf3a0ee73d43e4bd56dbfec1efcc3672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d1237fea56e686398043d5b34aec4eadf3a0ee73d43e4bd56dbfec1efcc3672", kill_on_drop: false }`
[INFO] [stdout] 5d1237fea56e686398043d5b34aec4eadf3a0ee73d43e4bd56dbfec1efcc3672
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "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] 8b4cc60130d14411b5632cdb3dc8031538b0389573baf33a8ecbc4468a1654b8
[INFO] running `Command { std: "docker" "start" "-a" "8b4cc60130d14411b5632cdb3dc8031538b0389573baf33a8ecbc4468a1654b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rustlings v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.63s
[INFO] running `Command { std: "docker" "inspect" "8b4cc60130d14411b5632cdb3dc8031538b0389573baf33a8ecbc4468a1654b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4cc60130d14411b5632cdb3dc8031538b0389573baf33a8ecbc4468a1654b8", kill_on_drop: false }`
[INFO] [stdout] 8b4cc60130d14411b5632cdb3dc8031538b0389573baf33a8ecbc4468a1654b8