[INFO] cloning repository https://github.com/zhunor/fkin-sweet-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zhunor/fkin-sweet-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhunor%2Ffkin-sweet-rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhunor%2Ffkin-sweet-rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78194fc1acf562a1b508135f7c1356ccef265c5f
[INFO] checking zhunor/fkin-sweet-rust against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhunor%2Ffkin-sweet-rust" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhunor/fkin-sweet-rust on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zhunor/fkin-sweet-rust
[INFO] finished tweaking git repo https://github.com/zhunor/fkin-sweet-rust
[INFO] tweaked toml for git repo https://github.com/zhunor/fkin-sweet-rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/zhunor/fkin-sweet-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] f3a3c3977b91b729db8fafdea55120b731ff79dcffbf722041a16fc8b6579468
[INFO] running `"docker" "start" "-a" "f3a3c3977b91b729db8fafdea55120b731ff79dcffbf722041a16fc8b6579468"`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking ferris-says v0.1.1
[INFO] [stderr]     Checking hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `my_vec2`
[INFO] [stderr]  --> src/ref_pointer.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 |   let my_vec2 = &my_vec;
[INFO] [stderr]   |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_vec2`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/conditionals.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn run(){
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/loops.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn run(){
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]  --> src/enums.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   Right
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `my_vec2`
[INFO] [stderr]  --> src/ref_pointer.rs:7:7
[INFO] [stderr]   |
[INFO] [stderr] 7 |   let my_vec2 = &my_vec;
[INFO] [stderr]   |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_vec2`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/conditionals.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn run(){
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]  --> src/loops.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn run(){
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]  --> src/enums.rs:6:3
[INFO] [stderr]   |
[INFO] [stderr] 6 |   Right
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.90s
[INFO] running `"docker" "inspect" "f3a3c3977b91b729db8fafdea55120b731ff79dcffbf722041a16fc8b6579468"`
[INFO] running `"docker" "rm" "-f" "f3a3c3977b91b729db8fafdea55120b731ff79dcffbf722041a16fc8b6579468"`
[INFO] [stdout] f3a3c3977b91b729db8fafdea55120b731ff79dcffbf722041a16fc8b6579468