[INFO] updating cached repository https://github.com/daviswahl/rust-hkt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd67627fa38dae1fe6676e6f5dbd269fcfb1ad88
[INFO] checking daviswahl/rust-hkt against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaviswahl%2Frust-hkt" "/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/daviswahl/rust-hkt on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daviswahl/rust-hkt
[INFO] finished tweaking git repo https://github.com/daviswahl/rust-hkt
[INFO] tweaked toml for git repo https://github.com/daviswahl/rust-hkt written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/daviswahl/rust-hkt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65bfe3e05a47c764b142ce44d628dc9362ba2fbfbd2baa559a3c58a6de6d2242
[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" "65bfe3e05a47c764b142ce44d628dc9362ba2fbfbd2baa559a3c58a6de6d2242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65bfe3e05a47c764b142ce44d628dc9362ba2fbfbd2baa559a3c58a6de6d2242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65bfe3e05a47c764b142ce44d628dc9362ba2fbfbd2baa559a3c58a6de6d2242", kill_on_drop: false }`
[INFO] [stdout] 65bfe3e05a47c764b142ce44d628dc9362ba2fbfbd2baa559a3c58a6de6d2242
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0f854ed6a7f4b8b86255afd534db26889e99e9fff93efd60b8f7f1db73cfc88
[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" "a0f854ed6a7f4b8b86255afd534db26889e99e9fff93efd60b8f7f1db73cfc88", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-hkt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `functor_2_test`
[INFO] [stdout]    --> src/part2.rs:182:4
[INFO] [stdout]     |
[INFO] [stdout] 182 | fn functor_2_test() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `functor_2_test`
[INFO] [stdout]    --> src/part2.rs:182:4
[INFO] [stdout]     |
[INFO] [stdout] 182 | fn functor_2_test() {
[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 0.23s
[INFO] running `Command { std: "docker" "inspect" "a0f854ed6a7f4b8b86255afd534db26889e99e9fff93efd60b8f7f1db73cfc88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0f854ed6a7f4b8b86255afd534db26889e99e9fff93efd60b8f7f1db73cfc88", kill_on_drop: false }`
[INFO] [stdout] a0f854ed6a7f4b8b86255afd534db26889e99e9fff93efd60b8f7f1db73cfc88