[INFO] cloning repository https://github.com/Altarf02/Rust-101
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Altarf02/Rust-101" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAltarf02%2FRust-101", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAltarf02%2FRust-101'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25cfda30df94ced33cdc12ff85bfe23f1e20a455
[INFO] testing Altarf02/Rust-101 against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAltarf02%2FRust-101" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Altarf02/Rust-101 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Altarf02/Rust-101
[INFO] finished tweaking git repo https://github.com/Altarf02/Rust-101
[INFO] tweaked toml for git repo https://github.com/Altarf02/Rust-101 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/Altarf02/Rust-101 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6a45cc57c6bd6936e576ff8a8341e44241072a42614f40af09aef052b7179ca
[INFO] running `Command { std: "docker" "start" "-a" "e6a45cc57c6bd6936e576ff8a8341e44241072a42614f40af09aef052b7179ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6a45cc57c6bd6936e576ff8a8341e44241072a42614f40af09aef052b7179ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a45cc57c6bd6936e576ff8a8341e44241072a42614f40af09aef052b7179ca", kill_on_drop: false }`
[INFO] [stdout] e6a45cc57c6bd6936e576ff8a8341e44241072a42614f40af09aef052b7179ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8703b9403c5d0c02794830128f4b8d57017d77e54cc8726fe732c6890e733ba
[INFO] running `Command { std: "docker" "start" "-a" "b8703b9403c5d0c02794830128f4b8d57017d77e54cc8726fe732c6890e733ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling Rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: maybe a missing crate `nix`?
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nix::unistd::*;
[INFO] [stdout]   |     ^^^ maybe a missing crate `nix`?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ForkResult`
[INFO] [stdout]  --> src/main.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |                 ForkResult::Child => {
[INFO] [stdout]   |                 ^^^^^^^^^^ use of undeclared type `ForkResult`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `fork` in this scope
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let pid = fork();
[INFO] [stdout]   |               ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getpid` in this scope
[INFO] [stdout]  --> src/main.rs:9:68
[INFO] [stdout]   |
[INFO] [stdout] 9 |                     println!("[PID {}] This is the child process", getpid());    
[INFO] [stdout]   |                                                                    ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `getpid` in this scope
[INFO] [stdout]   --> src/main.rs:12:69
[INFO] [stdout]    |
[INFO] [stdout] 12 |                     println!("[PID {}] This is the parent process", getpid());
[INFO] [stdout]    |                                                                     ^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Rust-101` due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "b8703b9403c5d0c02794830128f4b8d57017d77e54cc8726fe732c6890e733ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8703b9403c5d0c02794830128f4b8d57017d77e54cc8726fe732c6890e733ba", kill_on_drop: false }`
[INFO] [stdout] b8703b9403c5d0c02794830128f4b8d57017d77e54cc8726fe732c6890e733ba