[INFO] updating cached repository https://github.com/gavrie/miniraft
[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] c461b86512fdc8f4b5c81b27dc316d7919155b17
[INFO] checking gavrie/miniraft against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgavrie%2Fminiraft" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gavrie/miniraft on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gavrie/miniraft
[INFO] finished tweaking git repo https://github.com/gavrie/miniraft
[INFO] tweaked toml for git repo https://github.com/gavrie/miniraft written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gavrie/miniraft already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 1c2ad9da4e40422e7220b7bed9df896bc4be6cfbe5b23d934a6b2c8cef5c5b24
[INFO] running `"docker" "start" "-a" "1c2ad9da4e40422e7220b7bed9df896bc4be6cfbe5b23d934a6b2c8cef5c5b24"`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]     Checking crossbeam-utils v0.6.3
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]     Checking rand_os v0.1.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.6
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking miniraft v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `RequestVoteResponse`
[INFO] [stderr]  --> src/miniraft/rpc.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     RequestVoteResponse(RequestVoteResults),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AppendEntriesRequest`
[INFO] [stderr]   --> src/miniraft/rpc.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     AppendEntriesRequest(AppendEntriesArguments),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AppendEntriesResponse`
[INFO] [stderr]   --> src/miniraft/rpc.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     AppendEntriesResponse(AppendEntriesResults),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Leader`
[INFO] [stderr]   --> src/miniraft/server.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Leader(VolatileDataForLeader),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RequestVoteResponse`
[INFO] [stderr]  --> src/miniraft/rpc.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     RequestVoteResponse(RequestVoteResults),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AppendEntriesRequest`
[INFO] [stderr]   --> src/miniraft/rpc.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     AppendEntriesRequest(AppendEntriesArguments),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AppendEntriesResponse`
[INFO] [stderr]   --> src/miniraft/rpc.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     AppendEntriesResponse(AppendEntriesResults),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Leader`
[INFO] [stderr]   --> src/miniraft/server.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Leader(VolatileDataForLeader),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.71s
[INFO] running `"docker" "inspect" "1c2ad9da4e40422e7220b7bed9df896bc4be6cfbe5b23d934a6b2c8cef5c5b24"`
[INFO] running `"docker" "rm" "-f" "1c2ad9da4e40422e7220b7bed9df896bc4be6cfbe5b23d934a6b2c8cef5c5b24"`
[INFO] [stdout] 1c2ad9da4e40422e7220b7bed9df896bc4be6cfbe5b23d934a6b2c8cef5c5b24