[INFO] updating cached repository methodin/tiger
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/methodin/tiger
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/methodin/tiger" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/methodin/tiger"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/methodin/tiger'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/methodin/tiger" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/methodin/tiger"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/methodin/tiger'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 24cd5f7adf93f7a5ba1e4f64a0fe2e44306882c9
[INFO] sha for GitHub repo methodin/tiger: 24cd5f7adf93f7a5ba1e4f64a0fe2e44306882c9
[INFO] validating manifest of methodin/tiger on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of methodin/tiger on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing methodin/tiger
[INFO] finished frobbing methodin/tiger
[INFO] frobbed toml for methodin/tiger written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/methodin/tiger/Cargo.toml
[INFO] started frobbing methodin/tiger
[INFO] finished frobbing methodin/tiger
[INFO] frobbed toml for methodin/tiger written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/methodin/tiger/Cargo.toml
[INFO] crate methodin/tiger already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking methodin/tiger against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-2/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/methodin/tiger:/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=forbid" "-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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c55e36638cdcf365d6045a2eab0868778378b53fffa849d7431d850a91ca238b
[INFO] running `"docker" "start" "-a" "c55e36638cdcf365d6045a2eab0868778378b53fffa849d7431d850a91ca238b"`
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling version_check v0.1.2
[INFO] [stderr]    Compiling openssl v0.9.14
[INFO] [stderr]     Checking libc v0.2.24
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking foreign-types v0.2.0
[INFO] [stderr]    Compiling futures v0.1.14
[INFO] [stderr]     Checking percent-encoding v1.0.0
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]     Checking httparse v1.2.3
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking untrusted v0.5.0
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking serde v1.0.8
[INFO] [stderr]     Checking cfg-if v0.1.1
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking md5 v0.3.4
[INFO] [stderr]     Checking uuid v0.5.0
[INFO] [stderr]     Checking getopts v0.2.14
[INFO] [stderr]     Checking unicode-bidi v0.3.3
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33
[INFO] [stderr]      |
[INFO] [stderr] 955  |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stderr]      |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 959  |         state = match (state, whitespace, limit) {
[INFO] [stderr]      |                        ----- borrow occurs due to use of `state` in closure
[INFO] [stderr] ...
[INFO] [stderr] 1008 |     while cont && match state { B | C => true, A => false } {
[INFO] [stderr]      |                                 ^ use of borrowed `state`
[INFO] [stderr] 1009 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stderr]      |         ------- borrow later used here
[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]     Checking time v0.1.37
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.1.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking xml-rs v0.6.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking num-integer v0.1.34
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking net2 v0.2.29
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking idna v0.1.2
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking nom v3.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.14
[INFO] [stderr]    Compiling rusoto_core v0.26.0
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking retry v0.4.0
[INFO] [stderr]     Checking twox-hash v1.1.0
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking num v0.1.39
[INFO] [stderr]     Checking url v1.5.0
[INFO] [stderr]    Compiling rayon v0.7.1
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking chrono v0.3.1
[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-1.5.0/src/form_urlencoded.rs:251:40
[INFO] [stderr]     |
[INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 251 |     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]     Checking hyper v0.10.12
[INFO] [stderr]    Compiling ring v0.9.7
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]     Checking serde_urlencoded v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking serde_yaml v0.7.1
[INFO] [stderr]     Checking native-tls v0.1.2
[INFO] [stderr]     Checking hyper-native-tls v0.2.4
[INFO] [stderr]     Checking reqwest v0.4.0
[INFO] [stderr]     Checking mysql v11.1.2
[INFO] [stderr]     Checking rusoto_credential v0.7.0
[INFO] [stderr]     Checking rusoto_s3 v0.26.0
[INFO] [stderr]     Checking tiger v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `"docker" "inspect" "c55e36638cdcf365d6045a2eab0868778378b53fffa849d7431d850a91ca238b"`
[INFO] running `"docker" "rm" "-f" "c55e36638cdcf365d6045a2eab0868778378b53fffa849d7431d850a91ca238b"`
[INFO] [stdout] c55e36638cdcf365d6045a2eab0868778378b53fffa849d7431d850a91ca238b