[INFO] cloning repository https://github.com/usmanmunara/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/usmanmunara/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusmanmunara%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusmanmunara%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a117a261b5cbd1e6609ea8100a9ec70ecb41cd64
[INFO] checking usmanmunara/rust_learning against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fusmanmunara%2Frust_learning" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/usmanmunara/rust_learning on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/usmanmunara/rust_learning
[INFO] finished tweaking git repo https://github.com/usmanmunara/rust_learning
[INFO] tweaked toml for git repo https://github.com/usmanmunara/rust_learning written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/usmanmunara/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7167a0ed17c8fd523c8e9dfbb23871f204fd34cd8cbaabc63930e8aed0ea3467
[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" "7167a0ed17c8fd523c8e9dfbb23871f204fd34cd8cbaabc63930e8aed0ea3467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7167a0ed17c8fd523c8e9dfbb23871f204fd34cd8cbaabc63930e8aed0ea3467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7167a0ed17c8fd523c8e9dfbb23871f204fd34cd8cbaabc63930e8aed0ea3467", kill_on_drop: false }`
[INFO] [stdout] 7167a0ed17c8fd523c8e9dfbb23871f204fd34cd8cbaabc63930e8aed0ea3467
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] 80b0a91ab119082b459662ead11a17095e096f023a2f8f4e96fc47a83357e018
[INFO] running `Command { std: "docker" "start" "-a" "80b0a91ab119082b459662ead11a17095e096f023a2f8f4e96fc47a83357e018", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "80b0a91ab119082b459662ead11a17095e096f023a2f8f4e96fc47a83357e018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80b0a91ab119082b459662ead11a17095e096f023a2f8f4e96fc47a83357e018", kill_on_drop: false }`
[INFO] [stdout] 80b0a91ab119082b459662ead11a17095e096f023a2f8f4e96fc47a83357e018