[INFO] updating cached repository grit96/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/grit96/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/grit96/rust-playground" "work/ex/beta-1.37-6/sources/1.36.0/gh/grit96/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/grit96/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/grit96/rust-playground" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/grit96/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/grit96/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c899a3559a2c63e4eea1c47d5909402b7567dd86
[INFO] sha for GitHub repo grit96/rust-playground: c899a3559a2c63e4eea1c47d5909402b7567dd86
[INFO] validating manifest of grit96/rust-playground on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of grit96/rust-playground on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing grit96/rust-playground
[INFO] finished frobbing grit96/rust-playground
[INFO] frobbed toml for grit96/rust-playground written to work/ex/beta-1.37-6/sources/1.36.0/gh/grit96/rust-playground/Cargo.toml
[INFO] started frobbing grit96/rust-playground
[INFO] finished frobbing grit96/rust-playground
[INFO] frobbed toml for grit96/rust-playground written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/grit96/rust-playground/Cargo.toml
[INFO] crate grit96/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing grit96/rust-playground against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/grit96/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=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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c19b5c37905f3c21966281d374a7f7b6e36bdbd37f9f25bf8db6abd5c0b35461
[INFO] running `"docker" "start" "-a" "c19b5c37905f3c21966281d374a7f7b6e36bdbd37f9f25bf8db6abd5c0b35461"`
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/fibo.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn fibo_iter() -> Box<Iterator<Item = i32>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = i32>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/sudoku.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |         '0'...'9' => c.to_digit(10).unwrap() as u8,
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "c19b5c37905f3c21966281d374a7f7b6e36bdbd37f9f25bf8db6abd5c0b35461"`
[INFO] running `"docker" "rm" "-f" "c19b5c37905f3c21966281d374a7f7b6e36bdbd37f9f25bf8db6abd5c0b35461"`
[INFO] [stdout] c19b5c37905f3c21966281d374a7f7b6e36bdbd37f9f25bf8db6abd5c0b35461
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/grit96/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=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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] fc4d364f30405fd1e985e7549df9b8f35ba0edf2fdbb4e593c5063f360213e25
[INFO] running `"docker" "start" "-a" "fc4d364f30405fd1e985e7549df9b8f35ba0edf2fdbb4e593c5063f360213e25"`
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/fibo.rs:13:27
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn fibo_iter() -> Box<Iterator<Item = i32>> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = i32>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/sudoku.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |         '0'...'9' => c.to_digit(10).unwrap() as u8,
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "fc4d364f30405fd1e985e7549df9b8f35ba0edf2fdbb4e593c5063f360213e25"`
[INFO] running `"docker" "rm" "-f" "fc4d364f30405fd1e985e7549df9b8f35ba0edf2fdbb4e593c5063f360213e25"`
[INFO] [stdout] fc4d364f30405fd1e985e7549df9b8f35ba0edf2fdbb4e593c5063f360213e25
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/grit96/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=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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 0389640377cf7183b13b946c6371884538709c10c397cbc6dcdb372a2df8309d
[INFO] running `"docker" "start" "-a" "0389640377cf7183b13b946c6371884538709c10c397cbc6dcdb372a2df8309d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/playground-7377fbfcbe5e7799
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0389640377cf7183b13b946c6371884538709c10c397cbc6dcdb372a2df8309d"`
[INFO] running `"docker" "rm" "-f" "0389640377cf7183b13b946c6371884538709c10c397cbc6dcdb372a2df8309d"`
[INFO] [stdout] 0389640377cf7183b13b946c6371884538709c10c397cbc6dcdb372a2df8309d