[INFO] updating cached repository Altarf02/Rust-101
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Altarf02/Rust-101
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Altarf02/Rust-101" "work/ex/beta-1.38-1/sources/1.37.0/gh/Altarf02/Rust-101"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Altarf02/Rust-101'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Altarf02/Rust-101" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Altarf02/Rust-101"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Altarf02/Rust-101'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0bfcd1bc88ca3b20848409efd7d8d0d77a5205c9
[INFO] sha for GitHub repo Altarf02/Rust-101: 0bfcd1bc88ca3b20848409efd7d8d0d77a5205c9
[INFO] validating manifest of Altarf02/Rust-101 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Altarf02/Rust-101 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Altarf02/Rust-101
[INFO] finished frobbing Altarf02/Rust-101
[INFO] frobbed toml for Altarf02/Rust-101 written to work/ex/beta-1.38-1/sources/1.37.0/gh/Altarf02/Rust-101/Cargo.toml
[INFO] started frobbing Altarf02/Rust-101
[INFO] finished frobbing Altarf02/Rust-101
[INFO] frobbed toml for Altarf02/Rust-101 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Altarf02/Rust-101/Cargo.toml
[INFO] crate Altarf02/Rust-101 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Altarf02/Rust-101 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Altarf02/Rust-101:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5c47935e317d7590ed051578646960b489d8f50e37741f86ec8f4a9486c56abb
[INFO] running `"docker" "start" "-a" "5c47935e317d7590ed051578646960b489d8f50e37741f86ec8f4a9486c56abb"`
[INFO] [stderr]    Compiling Rust-101 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: maybe a missing crate `nix`?
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nix::unistd::*;
[INFO] [stderr]   |     ^^^ maybe a missing crate `nix`?
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `ForkResult`
[INFO] [stderr]  --> src/main.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |                 ForkResult::Child => {
[INFO] [stderr]   |                 ^^^^^^^^^^ use of undeclared type or module `ForkResult`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `fork` in this scope
[INFO] [stderr]  --> src/main.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let pid = fork();
[INFO] [stderr]   |               ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getpid` in this scope
[INFO] [stderr]  --> src/main.rs:9:68
[INFO] [stderr]   |
[INFO] [stderr] 9 |                     println!("[PID {}] This is the child process", getpid());    
[INFO] [stderr]   |                                                                    ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `getpid` in this scope
[INFO] [stderr]   --> src/main.rs:12:69
[INFO] [stderr]    |
[INFO] [stderr] 12 |                     println!("[PID {}] This is the parent process", getpid());
[INFO] [stderr]    |                                                                     ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nix::unistd::*`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nix::unistd::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `Rust-101`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5c47935e317d7590ed051578646960b489d8f50e37741f86ec8f4a9486c56abb"`
[INFO] running `"docker" "rm" "-f" "5c47935e317d7590ed051578646960b489d8f50e37741f86ec8f4a9486c56abb"`
[INFO] [stdout] 5c47935e317d7590ed051578646960b489d8f50e37741f86ec8f4a9486c56abb