[INFO] crate tokio-cache 0.2.0-alpha.0 is already in cache
[INFO] checking tokio-cache-0.2.0-alpha.0 against master#9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7 for pr-64564
[INFO] extracting crate tokio-cache 0.2.0-alpha.0 into work/builds/worker-3/source
[INFO] validating manifest of crates.io crate tokio-cache 0.2.0-alpha.0 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 tokio-cache 0.2.0-alpha.0
[INFO] finished tweaking crates.io crate tokio-cache 0.2.0-alpha.0
[INFO] tweaked toml for crates.io crate tokio-cache 0.2.0-alpha.0 written to work/builds/worker-3/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/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] a864cedb3909b2bb7d0662ba26da8a8ad0e4b4444e51c5c89c6ea814ce0db18d
[INFO] running `"docker" "start" "-a" "a864cedb3909b2bb7d0662ba26da8a8ad0e4b4444e51c5c89c6ea814ce0db18d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling im v13.0.0
[INFO] [stderr]     Checking sized-chunks v0.3.1
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-cache v0.2.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `tokio_sync::Lock`
[INFO] [stderr]   --> src/core.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use tokio_sync::Lock;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ no `Lock` in the root
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/core.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 | /     {
[INFO] [stderr] 52 | |         loop {
[INFO] [stderr] 53 | |             let mut pending_entries = self.pending_entries.clone();
[INFO] [stderr] 54 | |             let mut guard = pending_entries.lock().await;
[INFO] [stderr] ...  |
[INFO] [stderr] 90 | |         }
[INFO] [stderr] 91 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/core.rs:96:5
[INFO] [stderr]     |
[INFO] [stderr] 96  | /     {
[INFO] [stderr] 97  | |         loop {
[INFO] [stderr] 98  | |             match channel.recv().await {
[INFO] [stderr] 99  | |                 Some(Some(value)) => return Some(value),
[INFO] [stderr] ...   |
[INFO] [stderr] 103 | |         }
[INFO] [stderr] 104 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `tokio-cache`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a864cedb3909b2bb7d0662ba26da8a8ad0e4b4444e51c5c89c6ea814ce0db18d"`
[INFO] running `"docker" "rm" "-f" "a864cedb3909b2bb7d0662ba26da8a8ad0e4b4444e51c5c89c6ea814ce0db18d"`
[INFO] [stdout] a864cedb3909b2bb7d0662ba26da8a8ad0e4b4444e51c5c89c6ea814ce0db18d