[INFO] updating cached repository jacwah/oak
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jacwah/oak
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jacwah/oak" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/jacwah/oak"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/jacwah/oak'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jacwah/oak" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jacwah/oak"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jacwah/oak'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8cc41d56c6b66ceca1da6ff4ed14542673c50233
[INFO] sha for GitHub repo jacwah/oak: 8cc41d56c6b66ceca1da6ff4ed14542673c50233
[INFO] validating manifest of jacwah/oak on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jacwah/oak on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jacwah/oak
[INFO] finished frobbing jacwah/oak
[INFO] frobbed toml for jacwah/oak written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/jacwah/oak/Cargo.toml
[INFO] started frobbing jacwah/oak
[INFO] finished frobbing jacwah/oak
[INFO] frobbed toml for jacwah/oak written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jacwah/oak/Cargo.toml
[INFO] crate jacwah/oak already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jacwah/oak against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/jacwah/oak:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 22e8713d5fc1cb6ba6abd1447b399c27ea5546ae8be4e0b13f702c64fef2408a
[INFO] running `"docker" "start" "-a" "22e8713d5fc1cb6ba6abd1447b399c27ea5546ae8be4e0b13f702c64fef2408a"`
[INFO] [stderr]    Compiling libz-sys v1.0.6
[INFO] [stderr]    Compiling libgit2-sys v0.5.1
[INFO] [stderr]     Checking clap v2.16.2
[INFO] [stderr]     Checking url v1.2.2
[INFO] [stderr]     Checking globset v0.1.2
[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-1.2.2/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]     Checking git2 v0.5.0
[INFO] [stderr]     Checking oak v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree_processor.rs:16:62
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn process(&mut self, tree: &mut TreeIter) -> Option<Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |     file_filter: Rc<FileFilter>,
[INFO] [stderr]    |                     ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:64:44
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn new<P>(path: P, file_filter: Rc<FileFilter>) -> Result<Self, Box<Error>> where
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:64:77
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn new<P>(path: P, file_filter: Rc<FileFilter>) -> Result<Self, Box<Error>> where
[INFO] [stderr]    |                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:79:42
[INFO] [stderr]    |
[INFO] [stderr] 79 |     type Item = Result<fs::DirEntry, Box<Error>>;
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |     file_filter: Rc<FileFilter>,
[INFO] [stderr]     |                     ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:143:67
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn new<P, F>(path: P, file_filter: F) -> Result<Self, Box<Error>> where
[INFO] [stderr]     |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:179:76
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn next_entry(dir: &mut Peekable<FilteredDir>) -> Option<Result<Entry, Box<Error>>> {
[INFO] [stderr]     |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:201:35
[INFO] [stderr]     |
[INFO] [stderr] 201 |     type Item = Result<Event, Box<Error>>;
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/filters.rs:12:40
[INFO] [stderr]    |
[INFO] [stderr] 12 | type Result = result::Result<bool, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/filters.rs:30:22
[INFO] [stderr]    |
[INFO] [stderr] 30 |     filters: Vec<Box<FileFilter>>,
[INFO] [stderr]    |                      ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/filters.rs:83:59
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn build(&self) -> result::Result<GlobFilter, Box<Error>> {
[INFO] [stderr]    |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/filters.rs:109:104
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn from<I: Iterator<Item=String>>(patterns: I, invert: bool) -> result::Result<GlobFilter, Box<Error>> {
[INFO] [stderr]     |                                                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/filters.rs:144:75
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn new(path: &Path) -> Option<result::Result<GitignoreFilter, Box<Error>>> {
[INFO] [stderr]     |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree_processor.rs:16:62
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn process(&mut self, tree: &mut TreeIter) -> Option<Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |     file_filter: Rc<FileFilter>,
[INFO] [stderr]    |                     ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:64:44
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn new<P>(path: P, file_filter: Rc<FileFilter>) -> Result<Self, Box<Error>> where
[INFO] [stderr]    |                                            ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:64:77
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn new<P>(path: P, file_filter: Rc<FileFilter>) -> Result<Self, Box<Error>> where
[INFO] [stderr]    |                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tree.rs:79:42
[INFO] [stderr]    |
[INFO] [stderr] 79 |     type Item = Result<fs::DirEntry, Box<Error>>;
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |     file_filter: Rc<FileFilter>,
[INFO] [stderr]     |                     ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:143:67
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn new<P, F>(path: P, file_filter: F) -> Result<Self, Box<Error>> where
[INFO] [stderr]     |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:179:76
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn next_entry(dir: &mut Peekable<FilteredDir>) -> Option<Result<Entry, Box<Error>>> {
[INFO] [stderr]     |                                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/tree.rs:201:35
[INFO] [stderr]     |
[INFO] [stderr] 201 |     type Item = Result<Event, Box<Error>>;
[INFO] [stderr]     |                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/filters.rs:12:40
[INFO] [stderr]    |
[INFO] [stderr] 12 | type Result = result::Result<bool, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/filters.rs:30:22
[INFO] [stderr]    |
[INFO] [stderr] 30 |     filters: Vec<Box<FileFilter>>,
[INFO] [stderr]    |                      ^^^^^^^^^^ help: use `dyn`: `dyn FileFilter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/filters.rs:83:59
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn build(&self) -> result::Result<GlobFilter, Box<Error>> {
[INFO] [stderr]    |                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/filters.rs:109:104
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub fn from<I: Iterator<Item=String>>(patterns: I, invert: bool) -> result::Result<GlobFilter, Box<Error>> {
[INFO] [stderr]     |                                                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/filters.rs:144:75
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn new(path: &Path) -> Option<result::Result<GitignoreFilter, Box<Error>>> {
[INFO] [stderr]     |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:14:18
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn die(message: &Display) -> ! {
[INFO] [stderr]    |                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:14:18
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn die(message: &Display) -> ! {
[INFO] [stderr]    |                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.72s
[INFO] running `"docker" "inspect" "22e8713d5fc1cb6ba6abd1447b399c27ea5546ae8be4e0b13f702c64fef2408a"`
[INFO] running `"docker" "rm" "-f" "22e8713d5fc1cb6ba6abd1447b399c27ea5546ae8be4e0b13f702c64fef2408a"`
[INFO] [stdout] 22e8713d5fc1cb6ba6abd1447b399c27ea5546ae8be4e0b13f702c64fef2408a