[INFO] updating cached repository JakeBjorke/guessing_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JakeBjorke/guessing_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JakeBjorke/guessing_game" "work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JakeBjorke/guessing_game" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JakeBjorke/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JakeBjorke/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6952ae093d38d8caf0ac7baeb8c39c98068a823e
[INFO] sha for GitHub repo JakeBjorke/guessing_game: 6952ae093d38d8caf0ac7baeb8c39c98068a823e
[INFO] validating manifest of JakeBjorke/guessing_game 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 JakeBjorke/guessing_game 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 JakeBjorke/guessing_game
[INFO] finished frobbing JakeBjorke/guessing_game
[INFO] frobbed toml for JakeBjorke/guessing_game written to work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game/Cargo.toml
[INFO] started frobbing JakeBjorke/guessing_game
[INFO] finished frobbing JakeBjorke/guessing_game
[INFO] frobbed toml for JakeBjorke/guessing_game written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JakeBjorke/guessing_game/Cargo.toml
[INFO] crate JakeBjorke/guessing_game 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 JakeBjorke/guessing_game against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f6aa1b2fcd39b9d637a0e2586419efa7f9d4fec3c3cebd07a84b2bf8df87ab39
[INFO] running `"docker" "start" "-a" "f6aa1b2fcd39b9d637a0e2586419efa7f9d4fec3c3cebd07a84b2bf8df87ab39"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "f6aa1b2fcd39b9d637a0e2586419efa7f9d4fec3c3cebd07a84b2bf8df87ab39"`
[INFO] running `"docker" "rm" "-f" "f6aa1b2fcd39b9d637a0e2586419efa7f9d4fec3c3cebd07a84b2bf8df87ab39"`
[INFO] [stdout] f6aa1b2fcd39b9d637a0e2586419efa7f9d4fec3c3cebd07a84b2bf8df87ab39
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 870a0cb9b2ff86d2404108775fe88f011a47c731cb7c3204015444a0d6a6ea4f
[INFO] running `"docker" "start" "-a" "870a0cb9b2ff86d2404108775fe88f011a47c731cb7c3204015444a0d6a6ea4f"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "870a0cb9b2ff86d2404108775fe88f011a47c731cb7c3204015444a0d6a6ea4f"`
[INFO] running `"docker" "rm" "-f" "870a0cb9b2ff86d2404108775fe88f011a47c731cb7c3204015444a0d6a6ea4f"`
[INFO] [stdout] 870a0cb9b2ff86d2404108775fe88f011a47c731cb7c3204015444a0d6a6ea4f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/JakeBjorke/guessing_game:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 00f1deff4fe020b8cbf7fd2622426397727b1d66cf5b3d6647e9d8ec6728f69f
[INFO] running `"docker" "start" "-a" "00f1deff4fe020b8cbf7fd2622426397727b1d66cf5b3d6647e9d8ec6728f69f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-bb35a4df9ee8519d
[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" "00f1deff4fe020b8cbf7fd2622426397727b1d66cf5b3d6647e9d8ec6728f69f"`
[INFO] running `"docker" "rm" "-f" "00f1deff4fe020b8cbf7fd2622426397727b1d66cf5b3d6647e9d8ec6728f69f"`
[INFO] [stdout] 00f1deff4fe020b8cbf7fd2622426397727b1d66cf5b3d6647e9d8ec6728f69f