[INFO] updating cached repository HibikineKage/counter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/HibikineKage/counter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/HibikineKage/counter" "work/ex/beta-1.38-1/sources/1.37.0/gh/HibikineKage/counter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/HibikineKage/counter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/HibikineKage/counter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/HibikineKage/counter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/HibikineKage/counter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 65604cb5b2b23f6ecd4a8b49b019c7130218f2f5
[INFO] sha for GitHub repo HibikineKage/counter: 65604cb5b2b23f6ecd4a8b49b019c7130218f2f5
[INFO] validating manifest of HibikineKage/counter 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 HibikineKage/counter 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 HibikineKage/counter
[INFO] finished frobbing HibikineKage/counter
[INFO] frobbed toml for HibikineKage/counter written to work/ex/beta-1.38-1/sources/1.37.0/gh/HibikineKage/counter/Cargo.toml
[INFO] started frobbing HibikineKage/counter
[INFO] finished frobbing HibikineKage/counter
[INFO] frobbed toml for HibikineKage/counter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/HibikineKage/counter/Cargo.toml
[INFO] crate HibikineKage/counter 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 HibikineKage/counter 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/HibikineKage/counter:/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] c42af015ccaf97b13dc7fd77718632daa981880bd2ce0f170decfe1e19cad163
[INFO] running `"docker" "start" "-a" "c42af015ccaf97b13dc7fd77718632daa981880bd2ce0f170decfe1e19cad163"`
[INFO] [stderr]    Compiling counter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let args = env::args();
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "c42af015ccaf97b13dc7fd77718632daa981880bd2ce0f170decfe1e19cad163"`
[INFO] running `"docker" "rm" "-f" "c42af015ccaf97b13dc7fd77718632daa981880bd2ce0f170decfe1e19cad163"`
[INFO] [stdout] c42af015ccaf97b13dc7fd77718632daa981880bd2ce0f170decfe1e19cad163
[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/HibikineKage/counter:/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] 5548b5b561e50f32bc5fa1f426330d4e2d13ddd94284d9ebdf1fd0634c4360f3
[INFO] running `"docker" "start" "-a" "5548b5b561e50f32bc5fa1f426330d4e2d13ddd94284d9ebdf1fd0634c4360f3"`
[INFO] [stderr]    Compiling counter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let args = env::args();
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "5548b5b561e50f32bc5fa1f426330d4e2d13ddd94284d9ebdf1fd0634c4360f3"`
[INFO] running `"docker" "rm" "-f" "5548b5b561e50f32bc5fa1f426330d4e2d13ddd94284d9ebdf1fd0634c4360f3"`
[INFO] [stdout] 5548b5b561e50f32bc5fa1f426330d4e2d13ddd94284d9ebdf1fd0634c4360f3
[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/HibikineKage/counter:/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] c656f0c92e4d408fb0a583d2220c1f2adc3a9ff6fd6176af7daa5f2c7a59fb9e
[INFO] running `"docker" "start" "-a" "c656f0c92e4d408fb0a583d2220c1f2adc3a9ff6fd6176af7daa5f2c7a59fb9e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/counter-3285844d1c4b358f
[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" "c656f0c92e4d408fb0a583d2220c1f2adc3a9ff6fd6176af7daa5f2c7a59fb9e"`
[INFO] running `"docker" "rm" "-f" "c656f0c92e4d408fb0a583d2220c1f2adc3a9ff6fd6176af7daa5f2c7a59fb9e"`
[INFO] [stdout] c656f0c92e4d408fb0a583d2220c1f2adc3a9ff6fd6176af7daa5f2c7a59fb9e