[INFO] updating cached repository andersonmills/modmod
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andersonmills/modmod
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andersonmills/modmod" "work/ex/beta-1.38-1/sources/1.37.0/gh/andersonmills/modmod"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/andersonmills/modmod'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andersonmills/modmod" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andersonmills/modmod"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andersonmills/modmod'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 767a5aedb93edf8d443f0ef4e094fbe44c8e326f
[INFO] sha for GitHub repo andersonmills/modmod: 767a5aedb93edf8d443f0ef4e094fbe44c8e326f
[INFO] validating manifest of andersonmills/modmod 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 andersonmills/modmod 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 andersonmills/modmod
[INFO] finished frobbing andersonmills/modmod
[INFO] frobbed toml for andersonmills/modmod written to work/ex/beta-1.38-1/sources/1.37.0/gh/andersonmills/modmod/Cargo.toml
[INFO] started frobbing andersonmills/modmod
[INFO] finished frobbing andersonmills/modmod
[INFO] frobbed toml for andersonmills/modmod written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andersonmills/modmod/Cargo.toml
[INFO] crate andersonmills/modmod 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] testing andersonmills/modmod 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/andersonmills/modmod:/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] 71f372b0ceebe6aca51c6540ada13b61e535a98cce50d2efa169ad2c3cefae5b
[INFO] running `"docker" "start" "-a" "71f372b0ceebe6aca51c6540ada13b61e535a98cce50d2efa169ad2c3cefae5b"`
[INFO] [stderr]    Compiling gcc v0.3.46
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling openssl-probe v0.1.1
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.1
[INFO] [stderr]    Compiling cmake v0.1.23
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling idna v0.1.2
[INFO] [stderr]    Compiling libz-sys v1.0.13
[INFO] [stderr]    Compiling openssl-sys v0.9.12
[INFO] [stderr]    Compiling curl-sys v0.3.11
[INFO] [stderr]    Compiling libssh2-sys v0.2.6
[INFO] [stderr]    Compiling libgit2-sys v0.6.10
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling url v1.4.0
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.4.0/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling docopt v0.7.0
[INFO] [stderr]    Compiling git2 v0.6.5
[INFO] [stderr]    Compiling modmod v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `cb`
[INFO] [stderr]   --> src/modmod.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let cb = & mut git2::build::CheckoutBuilder::new();
[INFO] [stderr]    |             ^^ help: consider prefixing with an underscore: `_cb`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]  --> src/parse.rs:6:31
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn update_puppetfile_mods(source: &str, version: &str) {
[INFO] [stderr]   |                               ^^^^^^ help: consider prefixing with an underscore: `_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]  --> src/parse.rs:6:45
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn update_puppetfile_mods(source: &str, version: &str) {
[INFO] [stderr]   |                                             ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 15s
[INFO] running `"docker" "inspect" "71f372b0ceebe6aca51c6540ada13b61e535a98cce50d2efa169ad2c3cefae5b"`
[INFO] running `"docker" "rm" "-f" "71f372b0ceebe6aca51c6540ada13b61e535a98cce50d2efa169ad2c3cefae5b"`
[INFO] [stdout] 71f372b0ceebe6aca51c6540ada13b61e535a98cce50d2efa169ad2c3cefae5b
[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/andersonmills/modmod:/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] 68d6c467a4263a3af6bf64ea14e88dd182eb74c63aac097739181bf6b8c46180
[INFO] running `"docker" "start" "-a" "68d6c467a4263a3af6bf64ea14e88dd182eb74c63aac097739181bf6b8c46180"`
[INFO] [stderr]    Compiling modmod v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `cb`
[INFO] [stderr]   --> src/modmod.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let cb = & mut git2::build::CheckoutBuilder::new();
[INFO] [stderr]    |             ^^ help: consider prefixing with an underscore: `_cb`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]  --> src/parse.rs:6:31
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn update_puppetfile_mods(source: &str, version: &str) {
[INFO] [stderr]   |                               ^^^^^^ help: consider prefixing with an underscore: `_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]  --> src/parse.rs:6:45
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn update_puppetfile_mods(source: &str, version: &str) {
[INFO] [stderr]   |                                             ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "68d6c467a4263a3af6bf64ea14e88dd182eb74c63aac097739181bf6b8c46180"`
[INFO] running `"docker" "rm" "-f" "68d6c467a4263a3af6bf64ea14e88dd182eb74c63aac097739181bf6b8c46180"`
[INFO] [stdout] 68d6c467a4263a3af6bf64ea14e88dd182eb74c63aac097739181bf6b8c46180
[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/andersonmills/modmod:/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] 96cae24b0fedc4d97b9e9bad135cab7cac471e874752e7ccaaeb390d9914543f
[INFO] running `"docker" "start" "-a" "96cae24b0fedc4d97b9e9bad135cab7cac471e874752e7ccaaeb390d9914543f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/modmod-c5be7c679a28bbc4
[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" "96cae24b0fedc4d97b9e9bad135cab7cac471e874752e7ccaaeb390d9914543f"`
[INFO] running `"docker" "rm" "-f" "96cae24b0fedc4d97b9e9bad135cab7cac471e874752e7ccaaeb390d9914543f"`
[INFO] [stdout] 96cae24b0fedc4d97b9e9bad135cab7cac471e874752e7ccaaeb390d9914543f