[INFO] cloning repository https://github.com/Trojkev/rust-learner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Trojkev/rust-learner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrojkev%2Frust-learner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrojkev%2Frust-learner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac236efcbc844350cdc7179116057eb4763bce65
[INFO] checking Trojkev/rust-learner against master#0dce3f606e05cffab7361c132a399d3550ab0df8 for pr-78376
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTrojkev%2Frust-learner" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Trojkev/rust-learner on toolchain 0dce3f606e05cffab7361c132a399d3550ab0df8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Trojkev/rust-learner
[INFO] finished tweaking git repo https://github.com/Trojkev/rust-learner
[INFO] tweaked toml for git repo https://github.com/Trojkev/rust-learner written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Trojkev/rust-learner already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83a968f040556b3fe677138f71f4e1654e2c7b29a654216a6363f98c2795f602
[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" "83a968f040556b3fe677138f71f4e1654e2c7b29a654216a6363f98c2795f602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83a968f040556b3fe677138f71f4e1654e2c7b29a654216a6363f98c2795f602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83a968f040556b3fe677138f71f4e1654e2c7b29a654216a6363f98c2795f602", kill_on_drop: false }`
[INFO] [stdout] 83a968f040556b3fe677138f71f4e1654e2c7b29a654216a6363f98c2795f602
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+0dce3f606e05cffab7361c132a399d3550ab0df8" "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] 9a6b281a7819ff9dd62beb76d0da7da6bfb65ec57d70b6fe27f4a0b651dd194f
[INFO] running `Command { std: "docker" "start" "-a" "9a6b281a7819ff9dd62beb76d0da7da6bfb65ec57d70b6fe27f4a0b651dd194f", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-learner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "9a6b281a7819ff9dd62beb76d0da7da6bfb65ec57d70b6fe27f4a0b651dd194f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a6b281a7819ff9dd62beb76d0da7da6bfb65ec57d70b6fe27f4a0b651dd194f", kill_on_drop: false }`
[INFO] [stdout] 9a6b281a7819ff9dd62beb76d0da7da6bfb65ec57d70b6fe27f4a0b651dd194f