[INFO] cloning repository https://github.com/mtwtkman/sorts-drill
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtwtkman/sorts-drill" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwtkman%2Fsorts-drill", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwtkman%2Fsorts-drill'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee9579788b8f0b781c2e7eec99e367c36de8270b
[INFO] checking mtwtkman/sorts-drill against master#fc81ad22c453776de16acf9938976930cf8c9401 for pr-77325
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwtkman%2Fsorts-drill" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mtwtkman/sorts-drill on toolchain fc81ad22c453776de16acf9938976930cf8c9401
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mtwtkman/sorts-drill
[INFO] finished tweaking git repo https://github.com/mtwtkman/sorts-drill
[INFO] tweaked toml for git repo https://github.com/mtwtkman/sorts-drill written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mtwtkman/sorts-drill already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ffacb18cf525e2417692bbcdaa2c095c6eba82b888e03e1daee3077414a5b95c
[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" "ffacb18cf525e2417692bbcdaa2c095c6eba82b888e03e1daee3077414a5b95c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffacb18cf525e2417692bbcdaa2c095c6eba82b888e03e1daee3077414a5b95c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffacb18cf525e2417692bbcdaa2c095c6eba82b888e03e1daee3077414a5b95c", kill_on_drop: false }`
[INFO] [stdout] ffacb18cf525e2417692bbcdaa2c095c6eba82b888e03e1daee3077414a5b95c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+fc81ad22c453776de16acf9938976930cf8c9401" "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] ae3c6cf12c785b1bcd4e3a023a326c21c9e8156c9f7c0d436c8b5aea9488bf80
[INFO] running `Command { std: "docker" "start" "-a" "ae3c6cf12c785b1bcd4e3a023a326c21c9e8156c9f7c0d436c8b5aea9488bf80", kill_on_drop: false }`
[INFO] [stderr]     Checking sorts v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `SwapError`
[INFO] [stdout]  --> src/selection.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     SwapError,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SwapError`
[INFO] [stdout]  --> src/selection.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     SwapError,
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "ae3c6cf12c785b1bcd4e3a023a326c21c9e8156c9f7c0d436c8b5aea9488bf80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae3c6cf12c785b1bcd4e3a023a326c21c9e8156c9f7c0d436c8b5aea9488bf80", kill_on_drop: false }`
[INFO] [stdout] ae3c6cf12c785b1bcd4e3a023a326c21c9e8156c9f7c0d436c8b5aea9488bf80