[INFO] cloning repository https://github.com/jessethepro/rust_small_rocksdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jessethepro/rust_small_rocksdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessethepro%2Frust_small_rocksdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessethepro%2Frust_small_rocksdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 99fb6db6995ae825b059380138bcf84d418786d1
[INFO] checking jessethepro/rust_small_rocksdb against master#6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd for pr-153721-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjessethepro%2Frust_small_rocksdb" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jessethepro/rust_small_rocksdb
[INFO] finished tweaking git repo https://github.com/jessethepro/rust_small_rocksdb
[INFO] tweaked toml for git repo https://github.com/jessethepro/rust_small_rocksdb written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jessethepro/rust_small_rocksdb on toolchain 6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jessethepro/rust_small_rocksdb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.2.49
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.5
[INFO] [stderr]   Downloaded libc v0.2.178
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc
[INFO] running `Command { std: "docker" "start" "64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.5
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling libc v0.2.178
[INFO] [stderr]    Compiling cc v1.2.49
[INFO] [stderr]    Compiling rust_small_rocksdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `rocksdb_writeoptions_set_sync` is never used
[INFO] [stdout]    --> src/ffi.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn rocksdb_writeoptions_set_sync(options: *mut rocksdb_writeoptions_t, value: c_int);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rocksdb_list_column_families` is never used
[INFO] [stdout]    --> src/ffi.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn rocksdb_list_column_families(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rocksdb_writeoptions_set_sync` is never used
[INFO] [stdout]    --> src/ffi.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn rocksdb_writeoptions_set_sync(options: *mut rocksdb_writeoptions_t, value: c_int);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rocksdb_list_column_families` is never used
[INFO] [stdout]    --> src/ffi.rs:198:12
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn rocksdb_list_column_families(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Options` that must be used
[INFO] [stdout]  --> examples/must_use_demo.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Options::default();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: Options must be used to open a database
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = Options::default();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `DBIteratorAdapter` that must be used
[INFO] [stdout]   --> examples/must_use_demo.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     db.iter(rust_small_rocksdb::Direction::Forward);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: Iterators are lazy and do nothing unless consumed
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _ = db.iter(rust_small_rocksdb::Direction::Forward);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.38s
[INFO] running `Command { std: "docker" "inspect" "64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc", kill_on_drop: false }`
[INFO] [stdout] 64e28d4926937c8a0eb38df5500339d506aa3ae949d283fb5e18c68f5dcaa5fc