[INFO] fetching crate signalo 0.5.0...
[INFO] checking signalo-0.5.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate signalo 0.5.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate signalo 0.5.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate signalo 0.5.0
[INFO] finished tweaking crates.io crate signalo 0.5.0
[INFO] tweaked toml for crates.io crate signalo 0.5.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signalo_sinks v0.5.1
[INFO] [stderr]   Downloaded signalo_sources v0.5.1
[INFO] [stderr]   Downloaded signalo_pipes v0.5.0
[INFO] [stderr]   Downloaded signalo_filters v0.5.1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e3909a457c27130e9e86370ce1b96a80d9084216c488ee7df72c26674e9dfb09
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e3909a457c27130e9e86370ce1b96a80d9084216c488ee7df72c26674e9dfb09"`
[INFO] [stderr]    Compiling dimensioned v0.7.0
[INFO] [stderr]     Checking signalo_traits v0.4.0
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking signalo_pipes v0.5.0
[INFO] [stderr] error: unused `Iter` in field `iter` that must be used
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/arraydeque-0.4.5/src/lib.rs:1401:9
[INFO] [stderr]      |
[INFO] [stderr] 1401 |         self.drain(..);
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: iterator adaptors are lazy and do nothing unless consumed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `arraydeque`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e3909a457c27130e9e86370ce1b96a80d9084216c488ee7df72c26674e9dfb09"`
[INFO] running `"docker" "rm" "-f" "e3909a457c27130e9e86370ce1b96a80d9084216c488ee7df72c26674e9dfb09"`
[INFO] [stdout] e3909a457c27130e9e86370ce1b96a80d9084216c488ee7df72c26674e9dfb09