[INFO] cloning repository https://github.com/Denteyon/simple-shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Denteyon/simple-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDenteyon%2Fsimple-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDenteyon%2Fsimple-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9c843ae31a1ac16ae3f1636b9adef7b53d3c50b
[INFO] checking Denteyon/simple-shell against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDenteyon%2Fsimple-shell" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Denteyon/simple-shell on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Denteyon/simple-shell
[INFO] finished tweaking git repo https://github.com/Denteyon/simple-shell
[INFO] tweaked toml for git repo https://github.com/Denteyon/simple-shell written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Denteyon/simple-shell 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.20.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b108e8d63ff9da34aa3ac098e4b3e2d3de7ecf738dec7c31891927bd670c1b66
[INFO] running `Command { std: "docker" "start" "-a" "b108e8d63ff9da34aa3ac098e4b3e2d3de7ecf738dec7c31891927bd670c1b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b108e8d63ff9da34aa3ac098e4b3e2d3de7ecf738dec7c31891927bd670c1b66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b108e8d63ff9da34aa3ac098e4b3e2d3de7ecf738dec7c31891927bd670c1b66", kill_on_drop: false }`
[INFO] [stdout] b108e8d63ff9da34aa3ac098e4b3e2d3de7ecf738dec7c31891927bd670c1b66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 795573d24deced6e33cb5d73a9d8c5dedf389c26497d35cd0ecebef5a470f55e
[INFO] running `Command { std: "docker" "start" "-a" "795573d24deced6e33cb5d73a9d8c5dedf389c26497d35cd0ecebef5a470f55e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking simple-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0133]: call to unsafe function `nix::unistd::fork` is unsafe and requires unsafe function or block
[INFO] [stdout]   --> src/main.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = match fork() {
[INFO] [stdout]    |                       ^^^^^^ call to unsafe function
[INFO] [stdout]    |
[INFO] [stdout]    = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0133]: call to unsafe function `nix::unistd::fork` is unsafe and requires unsafe function or block
[INFO] [stdout]   --> src/main.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let _ = match fork() {
[INFO] [stdout]    |                       ^^^^^^ call to unsafe function
[INFO] [stdout]    |
[INFO] [stdout]    = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-shell` (bin "simple-shell") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `simple-shell` (bin "simple-shell" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "795573d24deced6e33cb5d73a9d8c5dedf389c26497d35cd0ecebef5a470f55e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "795573d24deced6e33cb5d73a9d8c5dedf389c26497d35cd0ecebef5a470f55e", kill_on_drop: false }`
[INFO] [stdout] 795573d24deced6e33cb5d73a9d8c5dedf389c26497d35cd0ecebef5a470f55e