[INFO] updating cached repository notherno/rust-hello
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/notherno/rust-hello
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/notherno/rust-hello" "work/ex/beta-1.38-1/sources/1.37.0/gh/notherno/rust-hello"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/notherno/rust-hello'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/notherno/rust-hello" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/notherno/rust-hello"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/notherno/rust-hello'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2794cc4379f49f883d02f4cd5bcbdd549449ebd0
[INFO] sha for GitHub repo notherno/rust-hello: 2794cc4379f49f883d02f4cd5bcbdd549449ebd0
[INFO] validating manifest of notherno/rust-hello 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 notherno/rust-hello 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 notherno/rust-hello
[INFO] finished frobbing notherno/rust-hello
[INFO] frobbed toml for notherno/rust-hello written to work/ex/beta-1.38-1/sources/1.37.0/gh/notherno/rust-hello/Cargo.toml
[INFO] started frobbing notherno/rust-hello
[INFO] finished frobbing notherno/rust-hello
[INFO] frobbed toml for notherno/rust-hello written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/notherno/rust-hello/Cargo.toml
[INFO] crate notherno/rust-hello 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 notherno/rust-hello 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/notherno/rust-hello:/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] 530cf39005d59b8caddbd0c8f03cd1bad6526a70a8f418b296f20e97e4fc684d
[INFO] running `"docker" "start" "-a" "530cf39005d59b8caddbd0c8f03cd1bad6526a70a8f418b296f20e97e4fc684d"`
[INFO] [stderr]    Compiling rust-hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `secret_number`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let secret_number = rand::thread_rng().gen_range(1, 101);
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_secret_number`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "530cf39005d59b8caddbd0c8f03cd1bad6526a70a8f418b296f20e97e4fc684d"`
[INFO] running `"docker" "rm" "-f" "530cf39005d59b8caddbd0c8f03cd1bad6526a70a8f418b296f20e97e4fc684d"`
[INFO] [stdout] 530cf39005d59b8caddbd0c8f03cd1bad6526a70a8f418b296f20e97e4fc684d
[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/notherno/rust-hello:/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] f9dcc8550cf6f097d2135cdaccb6aced93849e95f8659c8677a798e106623e5d
[INFO] running `"docker" "start" "-a" "f9dcc8550cf6f097d2135cdaccb6aced93849e95f8659c8677a798e106623e5d"`
[INFO] [stderr]    Compiling rust-hello v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `secret_number`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let secret_number = rand::thread_rng().gen_range(1, 101);
[INFO] [stderr]   |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_secret_number`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "f9dcc8550cf6f097d2135cdaccb6aced93849e95f8659c8677a798e106623e5d"`
[INFO] running `"docker" "rm" "-f" "f9dcc8550cf6f097d2135cdaccb6aced93849e95f8659c8677a798e106623e5d"`
[INFO] [stdout] f9dcc8550cf6f097d2135cdaccb6aced93849e95f8659c8677a798e106623e5d
[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/notherno/rust-hello:/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] 6756ffc71c76fac8428e025117645b72ee17a13405b22d41a1a92cd285ab0f5e
[INFO] running `"docker" "start" "-a" "6756ffc71c76fac8428e025117645b72ee17a13405b22d41a1a92cd285ab0f5e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_hello-fc4c9730c1a13ad4
[INFO] running `"docker" "inspect" "6756ffc71c76fac8428e025117645b72ee17a13405b22d41a1a92cd285ab0f5e"`
[INFO] running `"docker" "rm" "-f" "6756ffc71c76fac8428e025117645b72ee17a13405b22d41a1a92cd285ab0f5e"`
[INFO] [stdout] 6756ffc71c76fac8428e025117645b72ee17a13405b22d41a1a92cd285ab0f5e