[INFO] crate futures-cache 0.7.1 is already in cache
[INFO] checking futures-cache-0.7.1 against master#9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7 for pr-64564
[INFO] extracting crate futures-cache 0.7.1 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate futures-cache 0.7.1 on toolchain 9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures-cache 0.7.1
[INFO] finished tweaking crates.io crate futures-cache 0.7.1
[INFO] tweaked toml for crates.io crate futures-cache 0.7.1 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5fb021559e85dbcf0d1578a8de9ce84f1a89fd13518007aaccd868590b5130da
[INFO] running `"docker" "start" "-a" "5fb021559e85dbcf0d1578a8de9ce84f1a89fd13518007aaccd868590b5130da"`
[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]     Checking serde_bytes v0.11.2
[INFO] [stderr]     Checking serde-hashkey v0.2.2
[INFO] [stderr]     Checking serde_cbor v0.10.2
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking pagecache v0.17.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking sled v0.24.1
[INFO] [stderr]     Checking futures-cache v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:499:5
[INFO] [stderr]     |
[INFO] [stderr] 499 | /     {
[INFO] [stderr] 500 | |         let key = self.key(&key)?;
[INFO] [stderr] 501 | |
[INFO] [stderr] 502 | |         loop {
[INFO] [stderr] ...   |
[INFO] [stderr] 591 | |         }
[INFO] [stderr] 592 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:499:5
[INFO] [stderr]     |
[INFO] [stderr] 499 | /     {
[INFO] [stderr] 500 | |         let key = self.key(&key)?;
[INFO] [stderr] 501 | |
[INFO] [stderr] 502 | |         loop {
[INFO] [stderr] ...   |
[INFO] [stderr] 591 | |         }
[INFO] [stderr] 592 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.33s
[INFO] running `"docker" "inspect" "5fb021559e85dbcf0d1578a8de9ce84f1a89fd13518007aaccd868590b5130da"`
[INFO] running `"docker" "rm" "-f" "5fb021559e85dbcf0d1578a8de9ce84f1a89fd13518007aaccd868590b5130da"`
[INFO] [stdout] 5fb021559e85dbcf0d1578a8de9ce84f1a89fd13518007aaccd868590b5130da