[INFO] updating cached repository aep/zz
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aep/zz
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aep/zz" "work/ex/beta-1.38-1/sources/1.37.0/gh/aep/zz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/aep/zz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aep/zz" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aep/zz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aep/zz'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d3265cf08e94fac82cc2a14d5c81681e9f8008a2
[INFO] sha for GitHub repo aep/zz: d3265cf08e94fac82cc2a14d5c81681e9f8008a2
[INFO] validating manifest of aep/zz 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 aep/zz 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 aep/zz
[INFO] finished frobbing aep/zz
[INFO] frobbed toml for aep/zz written to work/ex/beta-1.38-1/sources/1.37.0/gh/aep/zz/Cargo.toml
[INFO] started frobbing aep/zz
[INFO] finished frobbing aep/zz
[INFO] frobbed toml for aep/zz written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aep/zz/Cargo.toml
[INFO] crate aep/zz 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 aep/zz 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aep/zz:/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] 8d001ffbc4bef62785ccc8a6368a8569ada8fe393379df7e9a82f3e47dcee6a3
[INFO] running `"docker" "start" "-a" "8d001ffbc4bef62785ccc8a6368a8569ada8fe393379df7e9a82f3e47dcee6a3"`
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling seahash v3.0.6
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling xoroshiro128 v0.3.0
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]    Compiling fasthash v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling toml v0.5.1
[INFO] [stderr]    Compiling zz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/emitter.rs:300:23
[INFO] [stderr]     |
[INFO] [stderr] 300 |             for (name,v) in &module.statics {
[INFO] [stderr]     |                       ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `artifact_namespace`
[INFO] [stderr]   --> src/resolver.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     artifact_namespace:         &Vec<String>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_artifact_namespace`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 22s
[INFO] running `"docker" "inspect" "8d001ffbc4bef62785ccc8a6368a8569ada8fe393379df7e9a82f3e47dcee6a3"`
[INFO] running `"docker" "rm" "-f" "8d001ffbc4bef62785ccc8a6368a8569ada8fe393379df7e9a82f3e47dcee6a3"`
[INFO] [stdout] 8d001ffbc4bef62785ccc8a6368a8569ada8fe393379df7e9a82f3e47dcee6a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aep/zz:/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] c20e481bf95a93a1f3349ed755bc0370299876a52901e9a4abb68196659728ac
[INFO] running `"docker" "start" "-a" "c20e481bf95a93a1f3349ed755bc0370299876a52901e9a4abb68196659728ac"`
[INFO] [stderr]    Compiling zz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/emitter.rs:300:23
[INFO] [stderr]     |
[INFO] [stderr] 300 |             for (name,v) in &module.statics {
[INFO] [stderr]     |                       ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `artifact_namespace`
[INFO] [stderr]   --> src/resolver.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     artifact_namespace:         &Vec<String>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_artifact_namespace`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `"docker" "inspect" "c20e481bf95a93a1f3349ed755bc0370299876a52901e9a4abb68196659728ac"`
[INFO] running `"docker" "rm" "-f" "c20e481bf95a93a1f3349ed755bc0370299876a52901e9a4abb68196659728ac"`
[INFO] [stdout] c20e481bf95a93a1f3349ed755bc0370299876a52901e9a4abb68196659728ac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aep/zz:/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] 77c6f98ead44ca1cab51f4898c09560c189ee1a8963d2f5adcad4aa3062d92e4
[INFO] running `"docker" "start" "-a" "77c6f98ead44ca1cab51f4898c09560c189ee1a8963d2f5adcad4aa3062d92e4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zz-317fddc7e202da51
[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" "77c6f98ead44ca1cab51f4898c09560c189ee1a8963d2f5adcad4aa3062d92e4"`
[INFO] running `"docker" "rm" "-f" "77c6f98ead44ca1cab51f4898c09560c189ee1a8963d2f5adcad4aa3062d92e4"`
[INFO] [stdout] 77c6f98ead44ca1cab51f4898c09560c189ee1a8963d2f5adcad4aa3062d92e4