[INFO] cloning repository https://github.com/ashish173/test_redis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ashish173/test_redis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashish173%2Ftest_redis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashish173%2Ftest_redis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4129593239e6969beb910e75e3e978baaa0935e9
[INFO] checking ashish173/test_redis against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fashish173%2Ftest_redis" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ashish173/test_redis
[INFO] finished tweaking git repo https://github.com/ashish173/test_redis
[INFO] tweaked toml for git repo https://github.com/ashish173/test_redis written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ashish173/test_redis on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ashish173/test_redis 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.42
[INFO] [stderr]   Downloaded quote v1.0.20
[INFO] [stderr]   Downloaded bytes v1.2.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.2
[INFO] [stderr]   Downloaded syn v1.0.98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c5e7b93bfed625b7f9a526d820ec21e47f1ff1283dea29f936f9376ca3acb6d
[INFO] running `Command { std: "docker" "start" "-a" "0c5e7b93bfed625b7f9a526d820ec21e47f1ff1283dea29f936f9376ca3acb6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c5e7b93bfed625b7f9a526d820ec21e47f1ff1283dea29f936f9376ca3acb6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c5e7b93bfed625b7f9a526d820ec21e47f1ff1283dea29f936f9376ca3acb6d", kill_on_drop: false }`
[INFO] [stdout] 0c5e7b93bfed625b7f9a526d820ec21e47f1ff1283dea29f936f9376ca3acb6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21918e6479f5509a496bf4cfc73b706f749416b718910d92663cfeb5f0470cf7
[INFO] running `Command { std: "docker" "start" "-a" "21918e6479f5509a496bf4cfc73b706f749416b718910d92663cfeb5f0470cf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]     Checking bytes v1.2.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling clap_derive v3.2.15
[INFO] [stderr]     Checking clap v3.2.16
[INFO] [stderr]     Checking test_redis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/db.rs:40:31
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let db_clone = db_copy.clone();
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Ref<'_, HashMap<String, bytes::Bytes>>` does not implement `Clone`, so calling `clone` on `&Ref<'_, HashMap<String, bytes::Bytes>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 40 -         let db_clone = db_copy.clone();
[INFO] [stdout] 40 +         let db_clone = db_copy;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/db.rs:40:31
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let db_clone = db_copy.clone();
[INFO] [stdout]    |                               ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Ref<'_, HashMap<String, bytes::Bytes>>` does not implement `Clone`, so calling `clone` on `&Ref<'_, HashMap<String, bytes::Bytes>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 40 -         let db_clone = db_copy.clone();
[INFO] [stdout] 40 +         let db_clone = db_copy;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/bin/client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/bin/client.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.22s
[INFO] running `Command { std: "docker" "inspect" "21918e6479f5509a496bf4cfc73b706f749416b718910d92663cfeb5f0470cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21918e6479f5509a496bf4cfc73b706f749416b718910d92663cfeb5f0470cf7", kill_on_drop: false }`
[INFO] [stdout] 21918e6479f5509a496bf4cfc73b706f749416b718910d92663cfeb5f0470cf7