[INFO] cloning repository Altarf02/Rust-101
[INFO] running `"git" "clone" "--bare" "git://github.com/Altarf02/Rust-101.git" "work/cache/sources/gh/Altarf02/Rust-101"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Altarf02/Rust-101'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Altarf02/Rust-101" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Altarf02/Rust-101"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Altarf02/Rust-101'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Altarf02/Rust-101" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Altarf02/Rust-101"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/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 master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Altarf02/Rust-101 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "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/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/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/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Altarf02/Rust-101/Cargo.toml
[INFO] crate Altarf02/Rust-101 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking Altarf02/Rust-101 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Altarf02/Rust-101:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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=forbid" "-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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 09b6d60293b4bae12d90cd5fe325ee10adc32316676433fb12cd40d1fc3a79a2
[INFO] running `"docker" "start" "-a" "09b6d60293b4bae12d90cd5fe325ee10adc32316676433fb12cd40d1fc3a79a2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking Rust-101 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: maybe a missing `extern crate nix;`?
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nix::unistd::*;
[INFO] [stderr]   |     ^^^ maybe a missing `extern 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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: maybe a missing `extern crate nix;`?
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nix::unistd::*;
[INFO] [stderr]   |     ^^^ maybe a missing `extern 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" "09b6d60293b4bae12d90cd5fe325ee10adc32316676433fb12cd40d1fc3a79a2"`
[INFO] running `"docker" "rm" "-f" "09b6d60293b4bae12d90cd5fe325ee10adc32316676433fb12cd40d1fc3a79a2"`
[INFO] [stdout] 09b6d60293b4bae12d90cd5fe325ee10adc32316676433fb12cd40d1fc3a79a2