[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 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/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 5f821eef86102ec15bbf996cb78114849fbd4e35a4ce8c780d1591ecfe31c48a
[INFO] running `"docker" "start" "-a" "5f821eef86102ec15bbf996cb78114849fbd4e35a4ce8c780d1591ecfe31c48a"`
[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 0.66s
[INFO] running `"docker" "inspect" "5f821eef86102ec15bbf996cb78114849fbd4e35a4ce8c780d1591ecfe31c48a"`
[INFO] running `"docker" "rm" "-f" "5f821eef86102ec15bbf996cb78114849fbd4e35a4ce8c780d1591ecfe31c48a"`
[INFO] [stdout] 5f821eef86102ec15bbf996cb78114849fbd4e35a4ce8c780d1591ecfe31c48a
[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/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3ad87962aeedb1a993ae29b28dde87e8120e1bd20b6d1184099c548337d21085
[INFO] running `"docker" "start" "-a" "3ad87962aeedb1a993ae29b28dde87e8120e1bd20b6d1184099c548337d21085"`
[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 0.64s
[INFO] running `"docker" "inspect" "3ad87962aeedb1a993ae29b28dde87e8120e1bd20b6d1184099c548337d21085"`
[INFO] running `"docker" "rm" "-f" "3ad87962aeedb1a993ae29b28dde87e8120e1bd20b6d1184099c548337d21085"`
[INFO] [stdout] 3ad87962aeedb1a993ae29b28dde87e8120e1bd20b6d1184099c548337d21085
[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/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 6a2a46c3e15ea00876ad3dc16fef12774a565f2f5035cb49257e22f74beca83c
[INFO] running `"docker" "start" "-a" "6a2a46c3e15ea00876ad3dc16fef12774a565f2f5035cb49257e22f74beca83c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/counter-7021928a04b4931c
[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" "6a2a46c3e15ea00876ad3dc16fef12774a565f2f5035cb49257e22f74beca83c"`
[INFO] running `"docker" "rm" "-f" "6a2a46c3e15ea00876ad3dc16fef12774a565f2f5035cb49257e22f74beca83c"`
[INFO] [stdout] 6a2a46c3e15ea00876ad3dc16fef12774a565f2f5035cb49257e22f74beca83c