[INFO] updating cached repository https://github.com/dputtick/protobuf
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a1b2d63afe7a8bea3ed779683353427dd57deae
[INFO] checking dputtick/protobuf against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdputtick%2Fprotobuf" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dputtick/protobuf on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dputtick/protobuf
[INFO] finished tweaking git repo https://github.com/dputtick/protobuf
[INFO] tweaked toml for git repo https://github.com/dputtick/protobuf written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/dputtick/protobuf already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] d48bf75f571ef95c18bb8ba5fe917c84207eaf337d073a55d7829d71e98678e6
[INFO] running `"docker" "start" "-a" "d48bf75f571ef95c18bb8ba5fe917c84207eaf337d073a55d7829d71e98678e6"`
[INFO] [stderr]     Checking protobuf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `from_bytes`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn from_bytes(slice_bytes: &[u8]) -> IntMessage {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `next_varint_pos`
[INFO] [stderr]   --> src/main.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn next_varint_pos(slice: &[u8], start: u64) -> u64 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `varint_decode`
[INFO] [stderr]   --> src/main.rs:37:4
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn varint_decode(bytes: &[u8]) -> u64 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Varint`
[INFO] [stderr]   --> src/main.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     Varint,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unpack_key`
[INFO] [stderr]   --> src/main.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn unpack_key(varint_key: &[u8]) -> Key {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "d48bf75f571ef95c18bb8ba5fe917c84207eaf337d073a55d7829d71e98678e6"`
[INFO] running `"docker" "rm" "-f" "d48bf75f571ef95c18bb8ba5fe917c84207eaf337d073a55d7829d71e98678e6"`
[INFO] [stdout] d48bf75f571ef95c18bb8ba5fe917c84207eaf337d073a55d7829d71e98678e6