[INFO] fetching crate rs-cache 0.2.5...
[INFO] checking rs-cache-0.2.5 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate rs-cache 0.2.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rs-cache 0.2.5 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rs-cache 0.2.5
[INFO] finished tweaking crates.io crate rs-cache 0.2.5
[INFO] tweaked toml for crates.io crate rs-cache 0.2.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rs-cache 0.2.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bf3ea2553b62be61857e1a1965c625ddd9921a23975668c1c198377736f8561
[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" "0bf3ea2553b62be61857e1a1965c625ddd9921a23975668c1c198377736f8561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bf3ea2553b62be61857e1a1965c625ddd9921a23975668c1c198377736f8561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bf3ea2553b62be61857e1a1965c625ddd9921a23975668c1c198377736f8561", kill_on_drop: false }`
[INFO] [stdout] 0bf3ea2553b62be61857e1a1965c625ddd9921a23975668c1c198377736f8561
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "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] 67cb333e67bcb52effb957aa383e0d51f4792f8509ecdf3ce97c2124d21937e6
[INFO] running `Command { std: "docker" "start" "-a" "67cb333e67bcb52effb957aa383e0d51f4792f8509ecdf3ce97c2124d21937e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]    Compiling bzip2-sys v0.1.8+1.0.8
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking rs-cache v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `load_items`
[INFO] [stdout]  --> tests/common.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn load_items(cache: &Cache) -> Result<ItemLoader, CacheError> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hash`
[INFO] [stdout]   --> tests/common.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn hash(buffer: &[u8]) -> String {
[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] [stdout] warning: function is never used: `load_items`
[INFO] [stdout]  --> tests/common.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn load_items(cache: &Cache) -> Result<ItemLoader, CacheError> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.83s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67cb333e67bcb52effb957aa383e0d51f4792f8509ecdf3ce97c2124d21937e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67cb333e67bcb52effb957aa383e0d51f4792f8509ecdf3ce97c2124d21937e6", kill_on_drop: false }`
[INFO] [stdout] 67cb333e67bcb52effb957aa383e0d51f4792f8509ecdf3ce97c2124d21937e6