[INFO] cloning repository https://github.com/benjumanji/minimal_rocksdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benjumanji/minimal_rocksdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjumanji%2Fminimal_rocksdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjumanji%2Fminimal_rocksdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9845054c58190b4a99ab8ab7844f295352b79b79
[INFO] checking benjumanji/minimal_rocksdb against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenjumanji%2Fminimal_rocksdb" "/workspace/builds/worker-87/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-87/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benjumanji/minimal_rocksdb on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benjumanji/minimal_rocksdb
[INFO] finished tweaking git repo https://github.com/benjumanji/minimal_rocksdb
[INFO] tweaked toml for git repo https://github.com/benjumanji/minimal_rocksdb written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] crate git repo https://github.com/benjumanji/minimal_rocksdb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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 rocksdb v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d1485787a8c152b1a3a3951f9c10d9e48b1fde0509661d7dc872ab533936665
[INFO] running `Command { std: "docker" "start" "-a" "5d1485787a8c152b1a3a3951f9c10d9e48b1fde0509661d7dc872ab533936665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d1485787a8c152b1a3a3951f9c10d9e48b1fde0509661d7dc872ab533936665", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d1485787a8c152b1a3a3951f9c10d9e48b1fde0509661d7dc872ab533936665", kill_on_drop: false }`
[INFO] [stdout] 5d1485787a8c152b1a3a3951f9c10d9e48b1fde0509661d7dc872ab533936665
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1002b4d0af57adca7614cd2a04fb6c3186c156b0b01939e9ee5e6052de069aa
[INFO] running `Command { std: "docker" "start" "-a" "c1002b4d0af57adca7614cd2a04fb6c3186c156b0b01939e9ee5e6052de069aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.5
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking libc v0.2.2
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking rocksdb v0.2.1
[INFO] [stderr]    Compiling advapi32-sys v0.1.2
[INFO] [stderr]     Checking rand v0.3.12
[INFO] [stderr]     Checking triplicate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `DBVector`, `MergeOperands`, `Writable`, `WriteBatch`
[INFO] [stdout]  --> src/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rocksdb::{DB, DBVector, MergeOperands, Options, Writable, WriteBatch};
[INFO] [stdout]   |                   ^^^^^^^^  ^^^^^^^^^^^^^           ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]  --> src/main.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 |         .unwrap_or({ db.create_cf("cf", &opts) })
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intern_handle`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let intern_handle = get_or_create(&opts, &mut db);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intern_handle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let iter = db.iterator_cf(cf).unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DBVector`, `MergeOperands`, `Writable`, `WriteBatch`
[INFO] [stdout]  --> src/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rocksdb::{DB, DBVector, MergeOperands, Options, Writable, WriteBatch};
[INFO] [stdout]   |                   ^^^^^^^^  ^^^^^^^^^^^^^           ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]  --> src/main.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 |         .unwrap_or({ db.create_cf("cf", &opts) })
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intern_handle`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let intern_handle = get_or_create(&opts, &mut db);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intern_handle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let iter = db.iterator_cf(cf).unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.03s
[INFO] running `Command { std: "docker" "inspect" "c1002b4d0af57adca7614cd2a04fb6c3186c156b0b01939e9ee5e6052de069aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1002b4d0af57adca7614cd2a04fb6c3186c156b0b01939e9ee5e6052de069aa", kill_on_drop: false }`
[INFO] [stdout] c1002b4d0af57adca7614cd2a04fb6c3186c156b0b01939e9ee5e6052de069aa