[INFO] updating cached repository robkoster/guessing_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/robkoster/guessing_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/robkoster/guessing_game" "work/ex/beta-1.38-1/sources/1.37.0/gh/robkoster/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/robkoster/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/robkoster/guessing_game" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robkoster/guessing_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robkoster/guessing_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4d9798cd549af20d714646f1333a3b79bf5e1ac
[INFO] sha for GitHub repo robkoster/guessing_game: c4d9798cd549af20d714646f1333a3b79bf5e1ac
[INFO] validating manifest of robkoster/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 robkoster/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 robkoster/guessing_game
[INFO] finished frobbing robkoster/guessing_game
[INFO] frobbed toml for robkoster/guessing_game written to work/ex/beta-1.38-1/sources/1.37.0/gh/robkoster/guessing_game/Cargo.toml
[INFO] started frobbing robkoster/guessing_game
[INFO] finished frobbing robkoster/guessing_game
[INFO] frobbed toml for robkoster/guessing_game written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/robkoster/guessing_game/Cargo.toml
[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] 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing robkoster/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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/robkoster/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] 6145d7fc16df1df26d9ef205ac59998264caf4c131a8e5d8fe991be098c8ba13
[INFO] running `"docker" "start" "-a" "6145d7fc16df1df26d9ef205ac59998264caf4c131a8e5d8fe991be098c8ba13"`
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::disp::graphic`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::disp::graphic;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lst`
[INFO] [stderr]  --> src/disp/graphic.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn display(lst: &[u32]) {}
[INFO] [stderr]   |                ^^^ help: consider prefixing with an underscore: `_lst`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `display`
[INFO] [stderr]  --> src/disp/graphic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn display(lst: &[u32]) {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.83s
[INFO] running `"docker" "inspect" "6145d7fc16df1df26d9ef205ac59998264caf4c131a8e5d8fe991be098c8ba13"`
[INFO] running `"docker" "rm" "-f" "6145d7fc16df1df26d9ef205ac59998264caf4c131a8e5d8fe991be098c8ba13"`
[INFO] [stdout] 6145d7fc16df1df26d9ef205ac59998264caf4c131a8e5d8fe991be098c8ba13
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/robkoster/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] 60ddac913cef7baa97a9080bf738f7e68923b23612d62ee83108df1c2d3a5138
[INFO] running `"docker" "start" "-a" "60ddac913cef7baa97a9080bf738f7e68923b23612d62ee83108df1c2d3a5138"`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::disp::graphic`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::disp::graphic;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lst`
[INFO] [stderr]  --> src/disp/graphic.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn display(lst: &[u32]) {}
[INFO] [stderr]   |                ^^^ help: consider prefixing with an underscore: `_lst`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `display`
[INFO] [stderr]  --> src/disp/graphic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn display(lst: &[u32]) {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "60ddac913cef7baa97a9080bf738f7e68923b23612d62ee83108df1c2d3a5138"`
[INFO] running `"docker" "rm" "-f" "60ddac913cef7baa97a9080bf738f7e68923b23612d62ee83108df1c2d3a5138"`
[INFO] [stdout] 60ddac913cef7baa97a9080bf738f7e68923b23612d62ee83108df1c2d3a5138
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/robkoster/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] 261e16e62ea3cc8c91aa2e10f546f564798b9a605ae86e010a594bf7ddedfc08
[INFO] running `"docker" "start" "-a" "261e16e62ea3cc8c91aa2e10f546f564798b9a605ae86e010a594bf7ddedfc08"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-25185345a811c0ee
[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" "261e16e62ea3cc8c91aa2e10f546f564798b9a605ae86e010a594bf7ddedfc08"`
[INFO] running `"docker" "rm" "-f" "261e16e62ea3cc8c91aa2e10f546f564798b9a605ae86e010a594bf7ddedfc08"`
[INFO] [stdout] 261e16e62ea3cc8c91aa2e10f546f564798b9a605ae86e010a594bf7ddedfc08