[INFO] updating cached repository attila-kun/git-change
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/attila-kun/git-change
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/attila-kun/git-change" "work/ex/beta-1.38-1/sources/1.37.0/gh/attila-kun/git-change"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/attila-kun/git-change'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/attila-kun/git-change" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/attila-kun/git-change"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/attila-kun/git-change'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 63250bb01fd56b711f9b74ba4ca4fcbb6fc162e0
[INFO] sha for GitHub repo attila-kun/git-change: 63250bb01fd56b711f9b74ba4ca4fcbb6fc162e0
[INFO] validating manifest of attila-kun/git-change 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 attila-kun/git-change 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 attila-kun/git-change
[INFO] finished frobbing attila-kun/git-change
[INFO] frobbed toml for attila-kun/git-change written to work/ex/beta-1.38-1/sources/1.37.0/gh/attila-kun/git-change/Cargo.toml
[INFO] started frobbing attila-kun/git-change
[INFO] finished frobbing attila-kun/git-change
[INFO] frobbed toml for attila-kun/git-change written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/attila-kun/git-change/Cargo.toml
[INFO] crate attila-kun/git-change 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing attila-kun/git-change 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/attila-kun/git-change:/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] f9361185781376edcf03506bb44d9eb394c2778aa09ebd5d4a168e6c960d65e2
[INFO] running `"docker" "start" "-a" "f9361185781376edcf03506bb44d9eb394c2778aa09ebd5d4a168e6c960d65e2"`
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.17
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling git-change v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]   --> src/main.rs:24:25
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let branches = match(repo.branches(None)) {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `branch_type`
[INFO] [stderr]   --> src/main.rs:32:25
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Ok((branch, branch_type)) => {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_branch_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |             Err(e) => panic!("error while iterating through branches")
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `"docker" "inspect" "f9361185781376edcf03506bb44d9eb394c2778aa09ebd5d4a168e6c960d65e2"`
[INFO] running `"docker" "rm" "-f" "f9361185781376edcf03506bb44d9eb394c2778aa09ebd5d4a168e6c960d65e2"`
[INFO] [stdout] f9361185781376edcf03506bb44d9eb394c2778aa09ebd5d4a168e6c960d65e2
[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/attila-kun/git-change:/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] fbf78f9d1fe2f266327fa5caf52f565cacdd4bb3fce12894cbffc9f198896d1b
[INFO] running `"docker" "start" "-a" "fbf78f9d1fe2f266327fa5caf52f565cacdd4bb3fce12894cbffc9f198896d1b"`
[INFO] [stderr]    Compiling git-change v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]   --> src/main.rs:24:25
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let branches = match(repo.branches(None)) {
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `branch_type`
[INFO] [stderr]   --> src/main.rs:32:25
[INFO] [stderr]    |
[INFO] [stderr] 32 |             Ok((branch, branch_type)) => {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_branch_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:41:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |             Err(e) => panic!("error while iterating through branches")
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "fbf78f9d1fe2f266327fa5caf52f565cacdd4bb3fce12894cbffc9f198896d1b"`
[INFO] running `"docker" "rm" "-f" "fbf78f9d1fe2f266327fa5caf52f565cacdd4bb3fce12894cbffc9f198896d1b"`
[INFO] [stdout] fbf78f9d1fe2f266327fa5caf52f565cacdd4bb3fce12894cbffc9f198896d1b
[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/attila-kun/git-change:/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] 874afd362a90ab75415a055178a6fb46cbf52bd8f79459c83a1aeecf38f8548d
[INFO] running `"docker" "start" "-a" "874afd362a90ab75415a055178a6fb46cbf52bd8f79459c83a1aeecf38f8548d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/git_change-279f3ca31d852e43
[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" "874afd362a90ab75415a055178a6fb46cbf52bd8f79459c83a1aeecf38f8548d"`
[INFO] running `"docker" "rm" "-f" "874afd362a90ab75415a055178a6fb46cbf52bd8f79459c83a1aeecf38f8548d"`
[INFO] [stdout] 874afd362a90ab75415a055178a6fb46cbf52bd8f79459c83a1aeecf38f8548d