[INFO] cloning repository https://github.com/Arjun4522/krat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arjun4522/krat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArjun4522%2Fkrat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArjun4522%2Fkrat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bbc76cdede125bcef7b0e8200bb1fec0bbafdb4f
[INFO] checking Arjun4522/krat against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArjun4522%2Fkrat" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Arjun4522/krat on toolchain a26e97be8826d408309fffbd8168362365719f50
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Arjun4522/krat
[INFO] finished tweaking git repo https://github.com/Arjun4522/krat
[INFO] tweaked toml for git repo https://github.com/Arjun4522/krat written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Arjun4522/krat 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" "+a26e97be8826d408309fffbd8168362365719f50" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78a5ae6f1479581a5b45ad72212b2e525a02f1330e655fc1c65254e211a48e0a
[INFO] running `Command { std: "docker" "start" "-a" "78a5ae6f1479581a5b45ad72212b2e525a02f1330e655fc1c65254e211a48e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78a5ae6f1479581a5b45ad72212b2e525a02f1330e655fc1c65254e211a48e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78a5ae6f1479581a5b45ad72212b2e525a02f1330e655fc1c65254e211a48e0a", kill_on_drop: false }`
[INFO] [stdout] 78a5ae6f1479581a5b45ad72212b2e525a02f1330e655fc1c65254e211a48e0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a26e97be8826d408309fffbd8168362365719f50" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] def771982446bc93e1ac925dd23441b44970d056d161d9b8952cebd8675751dd
[INFO] running `Command { std: "docker" "start" "-a" "def771982446bc93e1ac925dd23441b44970d056d161d9b8952cebd8675751dd", kill_on_drop: false }`
[INFO] [stderr]     Checking krat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `c_int`
[INFO] [stdout]  --> src/main.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | use libc::{dup2, c_int};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |       let child = match unsafe { libc::fork() } {
[INFO] [stdout]    |  _________________-
[INFO] [stdout] 28 | |         -1 => {
[INFO] [stdout] 29 | |             eprintln!("Failed to fork");
[INFO] [stdout] 30 | |             exit(1);
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |         _ => exit(0),
[INFO] [stdout] 44 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 45 |       
[INFO] [stdout] 46 |       let _ = child;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let child = match unsafe { libc::fork() } {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `c_int`
[INFO] [stdout]  --> src/main.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | use libc::{dup2, c_int};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |       let child = match unsafe { libc::fork() } {
[INFO] [stdout]    |  _________________-
[INFO] [stdout] 28 | |         -1 => {
[INFO] [stdout] 29 | |             eprintln!("Failed to fork");
[INFO] [stdout] 30 | |             exit(1);
[INFO] [stdout] ...  |
[INFO] [stdout] 43 | |         _ => exit(0),
[INFO] [stdout] 44 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 45 |       
[INFO] [stdout] 46 |       let _ = child;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let child = match unsafe { libc::fork() } {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_child`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "def771982446bc93e1ac925dd23441b44970d056d161d9b8952cebd8675751dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "def771982446bc93e1ac925dd23441b44970d056d161d9b8952cebd8675751dd", kill_on_drop: false }`
[INFO] [stdout] def771982446bc93e1ac925dd23441b44970d056d161d9b8952cebd8675751dd
