[INFO] cloning repository https://github.com/Lin-H/simple-md-previewer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lin-H/simple-md-previewer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLin-H%2Fsimple-md-previewer"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLin-H%2Fsimple-md-previewer'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 814a69b10ee1e80813859341a501a330231607e4
[INFO] checking Lin-H/simple-md-previewer against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLin-H%2Fsimple-md-previewer" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lin-H/simple-md-previewer on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Lin-H/simple-md-previewer
[INFO] removed path dependency web-view from git repo https://github.com/Lin-H/simple-md-previewer
[INFO] finished tweaking git repo https://github.com/Lin-H/simple-md-previewer
[INFO] tweaked toml for git repo https://github.com/Lin-H/simple-md-previewer written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Lin-H/simple-md-previewer 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded web-view v0.5.2
[INFO] [stderr]   Downloaded webview-sys v0.3.1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] c663ec29c3f6b76e74c7f0a77d647a13d949a9ec8d7212b2fc122f58e942c2f6
[INFO] running `"docker" "start" "-a" "c663ec29c3f6b76e74c7f0a77d647a13d949a9ec8d7212b2fc122f58e942c2f6"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]    Compiling webview-sys v0.3.1
[INFO] [stderr]     Checking web-view v0.5.2
[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-0.5.2/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-0.5.2/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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c663ec29c3f6b76e74c7f0a77d647a13d949a9ec8d7212b2fc122f58e942c2f6"`
[INFO] running `"docker" "rm" "-f" "c663ec29c3f6b76e74c7f0a77d647a13d949a9ec8d7212b2fc122f58e942c2f6"`
[INFO] [stdout] c663ec29c3f6b76e74c7f0a77d647a13d949a9ec8d7212b2fc122f58e942c2f6