[INFO] updating cached repository vthriller/zombieland
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vthriller/zombieland
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vthriller/zombieland" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/vthriller/zombieland"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/vthriller/zombieland'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vthriller/zombieland" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/vthriller/zombieland"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/vthriller/zombieland'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 63cceffb7ff9cae147592a37a151adeae6329e28
[INFO] sha for GitHub repo vthriller/zombieland: 63cceffb7ff9cae147592a37a151adeae6329e28
[INFO] validating manifest of vthriller/zombieland on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of vthriller/zombieland on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing vthriller/zombieland
[INFO] finished frobbing vthriller/zombieland
[INFO] frobbed toml for vthriller/zombieland written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/vthriller/zombieland/Cargo.toml
[INFO] started frobbing vthriller/zombieland
[INFO] finished frobbing vthriller/zombieland
[INFO] frobbed toml for vthriller/zombieland written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/vthriller/zombieland/Cargo.toml
[INFO] crate vthriller/zombieland already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking vthriller/zombieland against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-5/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/vthriller/zombieland:/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=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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c7aacacc5fb744e1c2896ea30743cce0d2e31629f0de1419bb0cfdf35a05167c
[INFO] running `"docker" "start" "-a" "c7aacacc5fb744e1c2896ea30743cce0d2e31629f0de1419bb0cfdf35a05167c"`
[INFO] [stderr]     Checking libc v0.2.19 (https://github.com/rust-lang/libc#4fe2cc22)
[INFO] [stderr]     Checking syscall v0.2.1
[INFO] [stderr]     Checking nix v0.8.0 (https://github.com/nix-rust/nix#9b81000b)
[INFO] [stderr]     Checking zombieland v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::os::unix::process::CommandExt::before_exec': should be unsafe, use `pre_exec` instead
[INFO] [stderr]    --> src/main.rs:167:15
[INFO] [stderr]     |
[INFO] [stderr] 167 |         let _ = cmd.before_exec(|| { let _ = unistd::setsid(); Ok(()) });
[INFO] [stderr]     |                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::os::unix::process::CommandExt::before_exec': should be unsafe, use `pre_exec` instead
[INFO] [stderr]    --> src/main.rs:167:15
[INFO] [stderr]     |
[INFO] [stderr] 167 |         let _ = cmd.before_exec(|| { let _ = unistd::setsid(); Ok(()) });
[INFO] [stderr]     |                     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(use_extern_macros)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `process_exec` has been stable since 1.15.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(process_exec)]
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(use_extern_macros)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `process_exec` has been stable since 1.15.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(process_exec)]
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.61s
[INFO] running `"docker" "inspect" "c7aacacc5fb744e1c2896ea30743cce0d2e31629f0de1419bb0cfdf35a05167c"`
[INFO] running `"docker" "rm" "-f" "c7aacacc5fb744e1c2896ea30743cce0d2e31629f0de1419bb0cfdf35a05167c"`
[INFO] [stdout] c7aacacc5fb744e1c2896ea30743cce0d2e31629f0de1419bb0cfdf35a05167c