[INFO] updating cached repository GregDavidson/FizzBuzzInRust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/GregDavidson/FizzBuzzInRust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/GregDavidson/FizzBuzzInRust" "work/ex/beta-1.38-1/sources/1.37.0/gh/GregDavidson/FizzBuzzInRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/GregDavidson/FizzBuzzInRust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/GregDavidson/FizzBuzzInRust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GregDavidson/FizzBuzzInRust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GregDavidson/FizzBuzzInRust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 80b1a4d802a0b3b737a332a1b61d6fa76328353a
[INFO] sha for GitHub repo GregDavidson/FizzBuzzInRust: 80b1a4d802a0b3b737a332a1b61d6fa76328353a
[INFO] validating manifest of GregDavidson/FizzBuzzInRust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of GregDavidson/FizzBuzzInRust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing GregDavidson/FizzBuzzInRust
[INFO] finished frobbing GregDavidson/FizzBuzzInRust
[INFO] frobbed toml for GregDavidson/FizzBuzzInRust written to work/ex/beta-1.38-1/sources/1.37.0/gh/GregDavidson/FizzBuzzInRust/Cargo.toml
[INFO] started frobbing GregDavidson/FizzBuzzInRust
[INFO] finished frobbing GregDavidson/FizzBuzzInRust
[INFO] frobbed toml for GregDavidson/FizzBuzzInRust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GregDavidson/FizzBuzzInRust/Cargo.toml
[INFO] crate GregDavidson/FizzBuzzInRust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing GregDavidson/FizzBuzzInRust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GregDavidson/FizzBuzzInRust:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2b1dde5298cea13fbe486db04cbdecbac358a20fb5dfeab306979f33c746fc8d
[INFO] running `"docker" "start" "-a" "2b1dde5298cea13fbe486db04cbdecbac358a20fb5dfeab306979f33c746fc8d"`
[INFO] [stderr]    Compiling fizz_buzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | -> Box<FnMut() -> Option<SStrP>> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> Option<SStrP>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "2b1dde5298cea13fbe486db04cbdecbac358a20fb5dfeab306979f33c746fc8d"`
[INFO] running `"docker" "rm" "-f" "2b1dde5298cea13fbe486db04cbdecbac358a20fb5dfeab306979f33c746fc8d"`
[INFO] [stdout] 2b1dde5298cea13fbe486db04cbdecbac358a20fb5dfeab306979f33c746fc8d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GregDavidson/FizzBuzzInRust:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] fc2cc73168842c44ef9ec559c67555d6813e823593f1b1b7f916c01bbf1e30c8
[INFO] running `"docker" "start" "-a" "fc2cc73168842c44ef9ec559c67555d6813e823593f1b1b7f916c01bbf1e30c8"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fizz_buzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | -> Box<FnMut() -> Option<SStrP>> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut() -> Option<SStrP>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "fc2cc73168842c44ef9ec559c67555d6813e823593f1b1b7f916c01bbf1e30c8"`
[INFO] running `"docker" "rm" "-f" "fc2cc73168842c44ef9ec559c67555d6813e823593f1b1b7f916c01bbf1e30c8"`
[INFO] [stdout] fc2cc73168842c44ef9ec559c67555d6813e823593f1b1b7f916c01bbf1e30c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/GregDavidson/FizzBuzzInRust:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 7139e79edb0fb19056fe61b0baa4fd841460cc24a9a6924efbbbfbb1e22c369f
[INFO] running `"docker" "start" "-a" "7139e79edb0fb19056fe61b0baa4fd841460cc24a9a6924efbbbfbb1e22c369f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fizz_buzz-716a6975bc30b212
[INFO] [stdout] 
[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" "7139e79edb0fb19056fe61b0baa4fd841460cc24a9a6924efbbbfbb1e22c369f"`
[INFO] running `"docker" "rm" "-f" "7139e79edb0fb19056fe61b0baa4fd841460cc24a9a6924efbbbfbb1e22c369f"`
[INFO] [stdout] 7139e79edb0fb19056fe61b0baa4fd841460cc24a9a6924efbbbfbb1e22c369f