[INFO] updating cached repository pranavb/rust101
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pranavb/rust101
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pranavb/rust101" "work/ex/beta-1.38-1/sources/1.37.0/gh/pranavb/rust101"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pranavb/rust101'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pranavb/rust101" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pranavb/rust101"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pranavb/rust101'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a91e440c2937ec797b7805ce8130c5fb2f6ce814
[INFO] sha for GitHub repo pranavb/rust101: a91e440c2937ec797b7805ce8130c5fb2f6ce814
[INFO] validating manifest of pranavb/rust101 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 pranavb/rust101 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 pranavb/rust101
[INFO] finished frobbing pranavb/rust101
[INFO] frobbed toml for pranavb/rust101 written to work/ex/beta-1.38-1/sources/1.37.0/gh/pranavb/rust101/Cargo.toml
[INFO] started frobbing pranavb/rust101
[INFO] finished frobbing pranavb/rust101
[INFO] frobbed toml for pranavb/rust101 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pranavb/rust101/Cargo.toml
[INFO] crate pranavb/rust101 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 pranavb/rust101 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-5/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/pranavb/rust101:/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] 6bb5d575b5c1ea2c5f0892833baad0ee24b3f2e2141e968acdd88b15bfac885f
[INFO] running `"docker" "start" "-a" "6bb5d575b5c1ea2c5f0892833baad0ee24b3f2e2141e968acdd88b15bfac885f"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `guessing_game`
[INFO] [stderr]   --> src/main.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn guessing_game() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "6bb5d575b5c1ea2c5f0892833baad0ee24b3f2e2141e968acdd88b15bfac885f"`
[INFO] running `"docker" "rm" "-f" "6bb5d575b5c1ea2c5f0892833baad0ee24b3f2e2141e968acdd88b15bfac885f"`
[INFO] [stdout] 6bb5d575b5c1ea2c5f0892833baad0ee24b3f2e2141e968acdd88b15bfac885f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/pranavb/rust101:/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] dafd9b27e795f6f79da5c87342eff9d51bfaad162cf725f9dd290347a7ba4665
[INFO] running `"docker" "start" "-a" "dafd9b27e795f6f79da5c87342eff9d51bfaad162cf725f9dd290347a7ba4665"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `guessing_game`
[INFO] [stderr]   --> src/main.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn guessing_game() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "dafd9b27e795f6f79da5c87342eff9d51bfaad162cf725f9dd290347a7ba4665"`
[INFO] running `"docker" "rm" "-f" "dafd9b27e795f6f79da5c87342eff9d51bfaad162cf725f9dd290347a7ba4665"`
[INFO] [stdout] dafd9b27e795f6f79da5c87342eff9d51bfaad162cf725f9dd290347a7ba4665
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/pranavb/rust101:/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] 3f18d970d5bd3686f47d4d96c3335b96f3647df5dd99ef08ee2694dfe3e3d8c4
[INFO] running `"docker" "start" "-a" "3f18d970d5bd3686f47d4d96c3335b96f3647df5dd99ef08ee2694dfe3e3d8c4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-2348c3a6a1050287
[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" "3f18d970d5bd3686f47d4d96c3335b96f3647df5dd99ef08ee2694dfe3e3d8c4"`
[INFO] running `"docker" "rm" "-f" "3f18d970d5bd3686f47d4d96c3335b96f3647df5dd99ef08ee2694dfe3e3d8c4"`
[INFO] [stdout] 3f18d970d5bd3686f47d4d96c3335b96f3647df5dd99ef08ee2694dfe3e3d8c4