[INFO] updating cached repository shakyShane/rust-vs-node
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/shakyShane/rust-vs-node
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/shakyShane/rust-vs-node" "work/ex/beta-1.38-1/sources/1.37.0/gh/shakyShane/rust-vs-node"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/shakyShane/rust-vs-node'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/shakyShane/rust-vs-node" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shakyShane/rust-vs-node"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shakyShane/rust-vs-node'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fbc95a085ff5ea997154daf7e7a5123d3fdf4555
[INFO] sha for GitHub repo shakyShane/rust-vs-node: fbc95a085ff5ea997154daf7e7a5123d3fdf4555
[INFO] validating manifest of shakyShane/rust-vs-node 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 shakyShane/rust-vs-node 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 shakyShane/rust-vs-node
[INFO] finished frobbing shakyShane/rust-vs-node
[INFO] frobbed toml for shakyShane/rust-vs-node written to work/ex/beta-1.38-1/sources/1.37.0/gh/shakyShane/rust-vs-node/Cargo.toml
[INFO] started frobbing shakyShane/rust-vs-node
[INFO] finished frobbing shakyShane/rust-vs-node
[INFO] frobbed toml for shakyShane/rust-vs-node written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shakyShane/rust-vs-node/Cargo.toml
[INFO] crate shakyShane/rust-vs-node 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 shakyShane/rust-vs-node 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-4/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/shakyShane/rust-vs-node:/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] 506d601836572c0de0adbf406e83a9bae5ed4655905c5687fe3f27f14ded083d
[INFO] running `"docker" "start" "-a" "506d601836572c0de0adbf406e83a9bae5ed4655905c5687fe3f27f14ded083d"`
[INFO] [stderr]    Compiling bench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |             for x in 1..100 {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "506d601836572c0de0adbf406e83a9bae5ed4655905c5687fe3f27f14ded083d"`
[INFO] running `"docker" "rm" "-f" "506d601836572c0de0adbf406e83a9bae5ed4655905c5687fe3f27f14ded083d"`
[INFO] [stdout] 506d601836572c0de0adbf406e83a9bae5ed4655905c5687fe3f27f14ded083d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/shakyShane/rust-vs-node:/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] 636d8214f77c10d11713ec55ae769b50d6e10712ff32eb1294849079711777d8
[INFO] running `"docker" "start" "-a" "636d8214f77c10d11713ec55ae769b50d6e10712ff32eb1294849079711777d8"`
[INFO] [stderr]    Compiling bench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |             for x in 1..100 {
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "636d8214f77c10d11713ec55ae769b50d6e10712ff32eb1294849079711777d8"`
[INFO] running `"docker" "rm" "-f" "636d8214f77c10d11713ec55ae769b50d6e10712ff32eb1294849079711777d8"`
[INFO] [stdout] 636d8214f77c10d11713ec55ae769b50d6e10712ff32eb1294849079711777d8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/shakyShane/rust-vs-node:/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] b282522a3c6da9e9e9bc88ae1eba2d621a47e0bd06395168629d6e6f64731ba0
[INFO] running `"docker" "start" "-a" "b282522a3c6da9e9e9bc88ae1eba2d621a47e0bd06395168629d6e6f64731ba0"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bench-971e8c493f6271fd
[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" "b282522a3c6da9e9e9bc88ae1eba2d621a47e0bd06395168629d6e6f64731ba0"`
[INFO] running `"docker" "rm" "-f" "b282522a3c6da9e9e9bc88ae1eba2d621a47e0bd06395168629d6e6f64731ba0"`
[INFO] [stdout] b282522a3c6da9e9e9bc88ae1eba2d621a47e0bd06395168629d6e6f64731ba0