[INFO] cloning repository https://github.com/khuey/rustc-1.18-regression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khuey/rustc-1.18-regression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhuey%2Frustc-1.18-regression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhuey%2Frustc-1.18-regression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 358a3adb46ac9859d5083e4a7bdccbbfc32d7deb
[INFO] checking khuey/rustc-1.18-regression against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhuey%2Frustc-1.18-regression" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/khuey/rustc-1.18-regression on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/khuey/rustc-1.18-regression
[INFO] finished tweaking git repo https://github.com/khuey/rustc-1.18-regression
[INFO] tweaked toml for git repo https://github.com/khuey/rustc-1.18-regression written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/khuey/rustc-1.18-regression already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcee99364d06e9e35f4a0fd0fc8a3a7fd71d8906b58cf7eaff0328ec8438b86d
[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" "bcee99364d06e9e35f4a0fd0fc8a3a7fd71d8906b58cf7eaff0328ec8438b86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcee99364d06e9e35f4a0fd0fc8a3a7fd71d8906b58cf7eaff0328ec8438b86d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcee99364d06e9e35f4a0fd0fc8a3a7fd71d8906b58cf7eaff0328ec8438b86d", kill_on_drop: false }`
[INFO] [stdout] bcee99364d06e9e35f4a0fd0fc8a3a7fd71d8906b58cf7eaff0328ec8438b86d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7de0064d7bc7ba5a61de038aa2ae9d4779ddb2b8674b70833dd3b28e723e339
[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" "b7de0064d7bc7ba5a61de038aa2ae9d4779ddb2b8674b70833dd3b28e723e339", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "b7de0064d7bc7ba5a61de038aa2ae9d4779ddb2b8674b70833dd3b28e723e339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7de0064d7bc7ba5a61de038aa2ae9d4779ddb2b8674b70833dd3b28e723e339", kill_on_drop: false }`
[INFO] [stdout] b7de0064d7bc7ba5a61de038aa2ae9d4779ddb2b8674b70833dd3b28e723e339