[INFO] crate gen-stream 0.2.4 is already in cache
[INFO] checking gen-stream-0.2.4 against try#e60d9e09c55855f5a848fde8ad83e13131a5b241 for pr-68350
[INFO] extracting crate gen-stream 0.2.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate gen-stream 0.2.4 on toolchain e60d9e09c55855f5a848fde8ad83e13131a5b241
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate gen-stream 0.2.4
[INFO] finished tweaking crates.io crate gen-stream 0.2.4
[INFO] tweaked toml for crates.io crate gen-stream 0.2.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 40a012a303ea3ccb62e772f7f1c738be1b6b107c250168dcce613af0c4929e5f
[INFO] running `"docker" "start" "-a" "40a012a303ea3ccb62e772f7f1c738be1b6b107c250168dcce613af0c4929e5f"`
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking gen-stream v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0603]: function `set_task_context` is private
[INFO] [stderr]   --> src/lib.rs:79:18
[INFO] [stderr]    |
[INFO] [stderr] 79 |     std::future::set_task_context,
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^ this function is private
[INFO] [stderr]    |
[INFO] [stderr] note: the function `set_task_context` is defined here
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0603`.
[INFO] [stderr] error: could not compile `gen-stream`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "40a012a303ea3ccb62e772f7f1c738be1b6b107c250168dcce613af0c4929e5f"`
[INFO] running `"docker" "rm" "-f" "40a012a303ea3ccb62e772f7f1c738be1b6b107c250168dcce613af0c4929e5f"`
[INFO] [stdout] 40a012a303ea3ccb62e772f7f1c738be1b6b107c250168dcce613af0c4929e5f