[INFO] cloning repository https://github.com/zkxs/nucleotide-subsequence
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zkxs/nucleotide-subsequence" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzkxs%2Fnucleotide-subsequence", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzkxs%2Fnucleotide-subsequence'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f513914db2469ac6b8d472257b829abb61b570a
[INFO] checking zkxs/nucleotide-subsequence against 5f93549e108157f071a34f220b74b25690496aa1 for pr-162986
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzkxs%2Fnucleotide-subsequence" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zkxs/nucleotide-subsequence
[INFO] finished tweaking git repo https://github.com/zkxs/nucleotide-subsequence
[INFO] tweaked toml for git repo https://github.com/zkxs/nucleotide-subsequence written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zkxs/nucleotide-subsequence on toolchain 5f93549e108157f071a34f220b74b25690496aa1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zkxs/nucleotide-subsequence 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" "+5f93549e108157f071a34f220b74b25690496aa1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3
[INFO] running `Command { std: "docker" "start" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3", 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" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3" "/opt/rustwide/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3", 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" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3" "/opt/rustwide/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking nucleotide-subsequence v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/main.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |             mem::forget(slice);
[INFO] [stdout]    |             ^^^^^^^^^^^^-----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         argument has type `&[u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 99 -             mem::forget(slice);
[INFO] [stdout] 99 +             let _ = slice;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::forget` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/main.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |             mem::forget(slice);
[INFO] [stdout]    |             ^^^^^^^^^^^^-----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         argument has type `&[u8]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(forgetting_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 99 -             mem::forget(slice);
[INFO] [stdout] 99 +             let _ = slice;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.53s
[INFO] running `Command { std: "docker" "inspect" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3", kill_on_drop: false }`
[INFO] [stdout] c6e465636d06578162cc2dba903e8fc12e1119d0f969cfbaf072865a51586af3
