[INFO] fetching crate neutrino 0.2.0...
[INFO] checking neutrino-0.2.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate neutrino 0.2.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate neutrino 0.2.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate neutrino 0.2.0
[INFO] finished tweaking crates.io crate neutrino 0.2.0
[INFO] tweaked toml for crates.io crate neutrino 0.2.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate neutrino 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rsass v0.11.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 5db002e555c01d0a01de15454074815da27704cf643b84a7414cc6c6cdc070df
[INFO] running `"docker" "start" "-a" "5db002e555c01d0a01de15454074815da27704cf643b84a7414cc6c6cdc070df"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]    Compiling bytecount v0.5.1
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]     Checking json v0.11.15
[INFO] [stderr]     Checking strfmt v0.1.6
[INFO] [stderr]    Compiling webview-sys v0.1.2
[INFO] [stderr]    Compiling stackvector v1.0.6
[INFO] [stderr]    Compiling lexical-core v0.4.3
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]     Checking web-view v0.4.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr] error: unused boxed boxed `std::ops::FnMut` trait object in field `invoke_handler` that must be used
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/web-view-0.4.1/src/lib.rs:302:17
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 Box::<UserData<T>>::from_raw(user_data_ptr);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: closures are lazy and do nothing unless called
[INFO] [stderr] 
[INFO] [stderr] error: unused boxed `std::result::Result` in field `result` that must be used
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/web-view-0.4.1/src/lib.rs:302:17
[INFO] [stderr]     |
[INFO] [stderr] 302 |                 Box::<UserData<T>>::from_raw(user_data_ptr);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `web-view`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5db002e555c01d0a01de15454074815da27704cf643b84a7414cc6c6cdc070df"`
[INFO] running `"docker" "rm" "-f" "5db002e555c01d0a01de15454074815da27704cf643b84a7414cc6c6cdc070df"`
[INFO] [stdout] 5db002e555c01d0a01de15454074815da27704cf643b84a7414cc6c6cdc070df