[INFO] updating cached repository cameron-justice/Rust_High_Or_Low
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cameron-justice/Rust_High_Or_Low
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cameron-justice/Rust_High_Or_Low" "work/ex/beta-1.38-1/sources/1.37.0/gh/cameron-justice/Rust_High_Or_Low"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cameron-justice/Rust_High_Or_Low'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cameron-justice/Rust_High_Or_Low" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cameron-justice/Rust_High_Or_Low"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cameron-justice/Rust_High_Or_Low'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e3fdcdb18cf90c6aec19fea4dc1e23b108b8e2f9
[INFO] sha for GitHub repo cameron-justice/Rust_High_Or_Low: e3fdcdb18cf90c6aec19fea4dc1e23b108b8e2f9
[INFO] validating manifest of cameron-justice/Rust_High_Or_Low 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 cameron-justice/Rust_High_Or_Low 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 cameron-justice/Rust_High_Or_Low
[INFO] finished frobbing cameron-justice/Rust_High_Or_Low
[INFO] frobbed toml for cameron-justice/Rust_High_Or_Low written to work/ex/beta-1.38-1/sources/1.37.0/gh/cameron-justice/Rust_High_Or_Low/Cargo.toml
[INFO] started frobbing cameron-justice/Rust_High_Or_Low
[INFO] finished frobbing cameron-justice/Rust_High_Or_Low
[INFO] frobbed toml for cameron-justice/Rust_High_Or_Low written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cameron-justice/Rust_High_Or_Low/Cargo.toml
[INFO] crate cameron-justice/Rust_High_Or_Low 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 cameron-justice/Rust_High_Or_Low 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/cameron-justice/Rust_High_Or_Low:/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] c86fce65b397ee0a4feb33717f63f4f27fa5169a75ca29e505bf9ed264c30a06
[INFO] running `"docker" "start" "-a" "c86fce65b397ee0a4feb33717f63f4f27fa5169a75ca29e505bf9ed264c30a06"`
[INFO] [stderr]    Compiling high_or_low v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:25:16
[INFO] [stderr]    |
[INFO] [stderr] 25 |             Ok(i) =>{
[INFO] [stderr]    |                ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `guess` is never read
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut guess: u8 = 0;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "c86fce65b397ee0a4feb33717f63f4f27fa5169a75ca29e505bf9ed264c30a06"`
[INFO] running `"docker" "rm" "-f" "c86fce65b397ee0a4feb33717f63f4f27fa5169a75ca29e505bf9ed264c30a06"`
[INFO] [stdout] c86fce65b397ee0a4feb33717f63f4f27fa5169a75ca29e505bf9ed264c30a06
[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/cameron-justice/Rust_High_Or_Low:/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] 1e7d4a53f469169314feddd13d384ef52ba4a2b664434f73b03ea71292fa18ea
[INFO] running `"docker" "start" "-a" "1e7d4a53f469169314feddd13d384ef52ba4a2b664434f73b03ea71292fa18ea"`
[INFO] [stderr]    Compiling high_or_low v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:25:16
[INFO] [stderr]    |
[INFO] [stderr] 25 |             Ok(i) =>{
[INFO] [stderr]    |                ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `guess` is never read
[INFO] [stderr]   --> src/main.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut guess: u8 = 0;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "1e7d4a53f469169314feddd13d384ef52ba4a2b664434f73b03ea71292fa18ea"`
[INFO] running `"docker" "rm" "-f" "1e7d4a53f469169314feddd13d384ef52ba4a2b664434f73b03ea71292fa18ea"`
[INFO] [stdout] 1e7d4a53f469169314feddd13d384ef52ba4a2b664434f73b03ea71292fa18ea
[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/cameron-justice/Rust_High_Or_Low:/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] 5989f1c89b10a72eed0f072a3c283c1c57bfcab355a7d08211cd48a3c15344b7
[INFO] running `"docker" "start" "-a" "5989f1c89b10a72eed0f072a3c283c1c57bfcab355a7d08211cd48a3c15344b7"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/high_or_low-8429011c57133bb2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5989f1c89b10a72eed0f072a3c283c1c57bfcab355a7d08211cd48a3c15344b7"`
[INFO] running `"docker" "rm" "-f" "5989f1c89b10a72eed0f072a3c283c1c57bfcab355a7d08211cd48a3c15344b7"`
[INFO] [stdout] 5989f1c89b10a72eed0f072a3c283c1c57bfcab355a7d08211cd48a3c15344b7