[INFO] cloning repository https://github.com/GeertVL/rs-rop-example
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GeertVL/rs-rop-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeertVL%2Frs-rop-example"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeertVL%2Frs-rop-example'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42d88d225945b5ac4ac31f970967a99470d8e1e1
[INFO] checking GeertVL/rs-rop-example against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGeertVL%2Frs-rop-example" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GeertVL/rs-rop-example 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/GeertVL/rs-rop-example
[INFO] finished tweaking git repo https://github.com/GeertVL/rs-rop-example
[INFO] tweaked toml for git repo https://github.com/GeertVL/rs-rop-example written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/GeertVL/rs-rop-example already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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] 913285b4b0306bb47976c708c91e50a1b22b1f91c262cdd36358310580658880
[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" "913285b4b0306bb47976c708c91e50a1b22b1f91c262cdd36358310580658880"`
[INFO] [stderr]     Checking RsRopExample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/rop/utils.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     RopResult::Failure(Option::Some(vec![msg]))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::vec::Vec<_>`
[INFO] [stderr]               found type `std::option::Option<std::vec::Vec<_>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `RsRopExample`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/rop/utils.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 |     RopResult::Failure(Option::Some(vec![msg]))
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::vec::Vec`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::vec::Vec<_>`
[INFO] [stderr]               found type `std::option::Option<std::vec::Vec<_>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `RsRopExample`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "913285b4b0306bb47976c708c91e50a1b22b1f91c262cdd36358310580658880"`
[INFO] running `"docker" "rm" "-f" "913285b4b0306bb47976c708c91e50a1b22b1f91c262cdd36358310580658880"`
[INFO] [stdout] 913285b4b0306bb47976c708c91e50a1b22b1f91c262cdd36358310580658880