[INFO] updating cached repository smith61/ls_cxx
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/smith61/ls_cxx
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/smith61/ls_cxx" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/smith61/ls_cxx"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/smith61/ls_cxx'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/smith61/ls_cxx" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/smith61/ls_cxx"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/smith61/ls_cxx'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d0a85a065aea9c7f042e7f911753f5dcdc6b6bf
[INFO] sha for GitHub repo smith61/ls_cxx: 7d0a85a065aea9c7f042e7f911753f5dcdc6b6bf
[INFO] validating manifest of smith61/ls_cxx on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of smith61/ls_cxx on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing smith61/ls_cxx
[INFO] finished frobbing smith61/ls_cxx
[INFO] frobbed toml for smith61/ls_cxx written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/smith61/ls_cxx/Cargo.toml
[INFO] started frobbing smith61/ls_cxx
[INFO] finished frobbing smith61/ls_cxx
[INFO] frobbed toml for smith61/ls_cxx written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/smith61/ls_cxx/Cargo.toml
[INFO] crate smith61/ls_cxx already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking smith61/ls_cxx against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/smith61/ls_cxx:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e5ab238872340a24d0b0b0df3e09cf6de77f27d0b2b3a91b60068f2d3c1e1328
[INFO] running `"docker" "start" "-a" "e5ab238872340a24d0b0b0df3e09cf6de77f27d0b2b3a91b60068f2d3c1e1328"`
[INFO] [stderr]     Checking dtoa v0.3.1
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]     Checking futures v0.1.10
[INFO] [stderr]    Compiling clang-sys v0.13.0
[INFO] [stderr]    Compiling clang-sys v0.11.1
[INFO] [stderr]     Checking humantime v1.0.0
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]     Checking ordered-float v0.2.3
[INFO] [stderr]     Checking url v1.4.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking serde-value 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-1.4.0/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]     Checking serde_yaml v0.5.1
[INFO] [stderr]     Checking tokio-core v0.1.4
[INFO] [stderr]     Checking futures_rb v0.1.0 (https://github.com/smith61/futures_rb#c38d363e)
[INFO] [stderr]     Checking log4rs v0.5.2
[INFO] [stderr]    Compiling serde_codegen_internals v0.11.3
[INFO] [stderr]     Checking tokio-stdio v0.1.0 (https://github.com/smith61/tokio-stdio#f5aa7a6d)
[INFO] [stderr]    Compiling serde_codegen v0.8.23
[INFO] [stderr]     Checking clang v0.14.1
[INFO] [stderr]    Compiling serde_derive v0.8.23
[INFO] [stderr]     Checking languageserver-types v0.6.1
[INFO] [stderr]     Checking lsp_rs v0.2.0 (https://github.com/smith61/rls_proto#91e9d9fd)
[INFO] [stderr]     Checking ls_service v0.2.0 (https://github.com/smith61/ls_service#d69b67f7)
[INFO] [stderr]     Checking ls_cxx v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `os`
[INFO] [stderr]   --> src/parent_process.rs:92:23
[INFO] [stderr]    |
[INFO] [stderr] 92 |     process_handle  : os::Process,
[INFO] [stderr]    |                       ^^ use of undeclared type or module `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `os`
[INFO] [stderr]    --> src/parent_process.rs:117:30
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let process_handle = os::Process::new( proc_id )?;
[INFO] [stderr]     |                              ^^ use of undeclared type or module `os`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `ls_cxx`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `os`
[INFO] [stderr]   --> src/parent_process.rs:92:23
[INFO] [stderr]    |
[INFO] [stderr] 92 |     process_handle  : os::Process,
[INFO] [stderr]    |                       ^^ use of undeclared type or module `os`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `os`
[INFO] [stderr]    --> src/parent_process.rs:117:30
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let process_handle = os::Process::new( proc_id )?;
[INFO] [stderr]     |                              ^^ use of undeclared type or module `os`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `ls_cxx`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e5ab238872340a24d0b0b0df3e09cf6de77f27d0b2b3a91b60068f2d3c1e1328"`
[INFO] running `"docker" "rm" "-f" "e5ab238872340a24d0b0b0df3e09cf6de77f27d0b2b3a91b60068f2d3c1e1328"`
[INFO] [stdout] e5ab238872340a24d0b0b0df3e09cf6de77f27d0b2b3a91b60068f2d3c1e1328