[INFO] cloning repository https://github.com/newyear6565/redis-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/newyear6565/redis-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewyear6565%2Fredis-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewyear6565%2Fredis-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 52a9cf9413d715f0c275f75245035ebdd92a8cd7
[INFO] checking newyear6565/redis-rs against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnewyear6565%2Fredis-rs" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/newyear6565/redis-rs on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/newyear6565/redis-rs
[INFO] finished tweaking git repo https://github.com/newyear6565/redis-rs
[INFO] tweaked toml for git repo https://github.com/newyear6565/redis-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/newyear6565/redis-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6faa6e537c7652e87e73e774b3480156bdf96e0773b77499e1461b575e69babe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "6faa6e537c7652e87e73e774b3480156bdf96e0773b77499e1461b575e69babe"`
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking tokio-sync v0.1.7
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking redis v0.13.0
[INFO] [stderr]     Checking redis_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `build`
[INFO] [stderr]   --> src/main.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn build() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stop`
[INFO] [stderr]   --> src/main.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     Stop,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fetch_an_integer`
[INFO] [stderr]    --> src/main.rs:256:4
[INFO] [stderr]     |
[INFO] [stderr] 256 | fn fetch_an_integer() -> redis::RedisResult<f64> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `build`
[INFO] [stderr]   --> src/main.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn build() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stop`
[INFO] [stderr]   --> src/main.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     Stop,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shoes_in_my_size`
[INFO] [stderr]    --> src/main.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fetch_an_integer`
[INFO] [stderr]    --> src/main.rs:256:4
[INFO] [stderr]     |
[INFO] [stderr] 256 | fn fetch_an_integer() -> redis::RedisResult<f64> {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.16s
[INFO] running `"docker" "inspect" "6faa6e537c7652e87e73e774b3480156bdf96e0773b77499e1461b575e69babe"`
[INFO] running `"docker" "rm" "-f" "6faa6e537c7652e87e73e774b3480156bdf96e0773b77499e1461b575e69babe"`
[INFO] [stdout] 6faa6e537c7652e87e73e774b3480156bdf96e0773b77499e1461b575e69babe