[INFO] fetching crate cascade 0.1.3...
[INFO] checking cascade-0.1.3 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate cascade 0.1.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cascade 0.1.3 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cascade 0.1.3
[INFO] finished tweaking crates.io crate cascade 0.1.3
[INFO] tweaked toml for crates.io crate cascade 0.1.3 written to /workspace/builds/worker-6/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]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 953652986f0b54497db6f94d91cdf53e4380a4d2bf01aa768572a20d72be72a2
[INFO] running `"docker" "start" "-a" "953652986f0b54497db6f94d91cdf53e4380a4d2bf01aa768572a20d72be72a2"`
[INFO] [stderr]     Checking cascade v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `method_chain_example`
[INFO] [stderr]   --> examples/basic_cascades.rs:87:7
[INFO] [stderr]    |
[INFO] [stderr] 87 |   let method_chain_example = cascade! {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_method_chain_example`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/basic_cascades.rs:93:3
[INFO] [stderr]    |
[INFO] [stderr] 93 |   option_cascade_test();
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "953652986f0b54497db6f94d91cdf53e4380a4d2bf01aa768572a20d72be72a2"`
[INFO] running `"docker" "rm" "-f" "953652986f0b54497db6f94d91cdf53e4380a4d2bf01aa768572a20d72be72a2"`
[INFO] [stdout] 953652986f0b54497db6f94d91cdf53e4380a4d2bf01aa768572a20d72be72a2