[INFO] updating cached repository b-m-f/rust_playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/b-m-f/rust_playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/b-m-f/rust_playground" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/b-m-f/rust_playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/b-m-f/rust_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/b-m-f/rust_playground" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/b-m-f/rust_playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/b-m-f/rust_playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fd5f5c1e312db99abdf4b07d809f0735db153586
[INFO] sha for GitHub repo b-m-f/rust_playground: fd5f5c1e312db99abdf4b07d809f0735db153586
[INFO] validating manifest of b-m-f/rust_playground on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of b-m-f/rust_playground on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing b-m-f/rust_playground
[INFO] finished frobbing b-m-f/rust_playground
[INFO] frobbed toml for b-m-f/rust_playground written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/b-m-f/rust_playground/Cargo.toml
[INFO] started frobbing b-m-f/rust_playground
[INFO] finished frobbing b-m-f/rust_playground
[INFO] frobbed toml for b-m-f/rust_playground written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/b-m-f/rust_playground/Cargo.toml
[INFO] crate b-m-f/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking b-m-f/rust_playground against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/b-m-f/rust_playground:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 081f8bbb62de787f9050ca09b9fd59d2d7d72b5ebb6fca938e69193b17897029
[INFO] running `"docker" "start" "-a" "081f8bbb62de787f9050ca09b9fd59d2d7d72b5ebb6fca938e69193b17897029"`
[INFO] [stderr]     Checking term v0.4.4
[INFO] [stderr]     Checking fs_examples v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `factorial_recursive`
[INFO] [stderr]  --> src/math.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn factorial_recursive(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `factorial`
[INFO] [stderr]  --> src/math.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn factorial (n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `factorial_recursive`
[INFO] [stderr]  --> src/math.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn factorial_recursive(n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `factorial`
[INFO] [stderr]  --> src/math.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn factorial (n: i64) -> i64 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "081f8bbb62de787f9050ca09b9fd59d2d7d72b5ebb6fca938e69193b17897029"`
[INFO] running `"docker" "rm" "-f" "081f8bbb62de787f9050ca09b9fd59d2d7d72b5ebb6fca938e69193b17897029"`
[INFO] [stdout] 081f8bbb62de787f9050ca09b9fd59d2d7d72b5ebb6fca938e69193b17897029