[INFO] updating cached repository mtraina/rust-by-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mtraina/rust-by-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mtraina/rust-by-example" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mtraina/rust-by-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mtraina/rust-by-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mtraina/rust-by-example" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mtraina/rust-by-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mtraina/rust-by-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed4325280923327a012b599f66a8fd66154bd5e8
[INFO] sha for GitHub repo mtraina/rust-by-example: ed4325280923327a012b599f66a8fd66154bd5e8
[INFO] validating manifest of mtraina/rust-by-example 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 mtraina/rust-by-example 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 mtraina/rust-by-example
[INFO] finished frobbing mtraina/rust-by-example
[INFO] frobbed toml for mtraina/rust-by-example written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/mtraina/rust-by-example/Cargo.toml
[INFO] started frobbing mtraina/rust-by-example
[INFO] finished frobbing mtraina/rust-by-example
[INFO] frobbed toml for mtraina/rust-by-example written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mtraina/rust-by-example/Cargo.toml
[INFO] crate mtraina/rust-by-example 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 mtraina/rust-by-example against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-1/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/mtraina/rust-by-example:/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] 018a157a4a76a633a8b2bd53053648e5048539b66bfe531817ff3dc6b4575c8b
[INFO] running `"docker" "start" "-a" "018a157a4a76a633a8b2bd53053648e5048539b66bfe531817ff3dc6b4575c8b"`
[INFO] [stderr]     Checking rust_by_example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Structure`
[INFO] [stderr]   --> examples/1_2_formatted_print.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     struct Structure(i32);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "018a157a4a76a633a8b2bd53053648e5048539b66bfe531817ff3dc6b4575c8b"`
[INFO] running `"docker" "rm" "-f" "018a157a4a76a633a8b2bd53053648e5048539b66bfe531817ff3dc6b4575c8b"`
[INFO] [stdout] 018a157a4a76a633a8b2bd53053648e5048539b66bfe531817ff3dc6b4575c8b