[INFO] updating cached repository yosefda/recommendation_rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/yosefda/recommendation_rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/yosefda/recommendation_rust" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/yosefda/recommendation_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/yosefda/recommendation_rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/yosefda/recommendation_rust" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/yosefda/recommendation_rust"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/yosefda/recommendation_rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 136d7d5d62e4f3ff6617df679ccd6b80b2fe95a6 [INFO] sha for GitHub repo yosefda/recommendation_rust: 136d7d5d62e4f3ff6617df679ccd6b80b2fe95a6 [INFO] validating manifest of yosefda/recommendation_rust on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of yosefda/recommendation_rust on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing yosefda/recommendation_rust [INFO] finished frobbing yosefda/recommendation_rust [INFO] frobbed toml for yosefda/recommendation_rust written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/yosefda/recommendation_rust/Cargo.toml [INFO] started frobbing yosefda/recommendation_rust [INFO] finished frobbing yosefda/recommendation_rust [INFO] frobbed toml for yosefda/recommendation_rust written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/yosefda/recommendation_rust/Cargo.toml [INFO] crate yosefda/recommendation_rust already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking yosefda/recommendation_rust against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-3/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/yosefda/recommendation_rust:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] cdd580cfa19e1dfa669ad367af5909d935730242be9b1653608f8ac232bf9c32 [INFO] running `"docker" "start" "-a" "cdd580cfa19e1dfa669ad367af5909d935730242be9b1653608f8ac232bf9c32"` [INFO] [stderr] Checking libc v0.2.36 [INFO] [stderr] Compiling cc v1.0.4 [INFO] [stderr] Checking byteorder v1.2.1 [INFO] [stderr] Compiling build_const v0.2.0 [INFO] [stderr] Checking num-traits v0.2.0 [INFO] [stderr] Checking serde v1.0.27 [INFO] [stderr] Checking itoa v0.3.4 [INFO] [stderr] Checking encoding_rs v0.7.2 [INFO] [stderr] Checking tokio-service v0.1.0 [INFO] [stderr] Checking relay v0.1.1 [INFO] [stderr] Compiling crc v1.7.0 [INFO] [stderr] Checking base64 v0.9.0 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking url v1.7.0 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.31 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking time v0.1.39 [INFO] [stderr] Checking bytes v0.4.6 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking mio v0.6.13 [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-1.7.0/src/form_urlencoded.rs:261:40 [INFO] [stderr] | [INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> { [INFO] [stderr] | -- lifetime `'a` defined here [INFO] [stderr] 260 | fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization } [INFO] [stderr] 261 | 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 tokio-io v0.1.5 [INFO] [stderr] Checking libflate v0.1.14 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking uuid v0.5.1 [INFO] [stderr] Compiling openssl-sys v0.9.26 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Checking tokio-core v0.1.12 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.3 [INFO] [stderr] Compiling openssl v0.9.24 [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] error: failed to run custom build command for `mime_guess v2.0.0-alpha.3` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mime_guess-55f27ba21c6cc09b/build-script-gen_mime_types` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:1084:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x56475a5ad43b - backtrace::backtrace::libunwind::trace::h99e6362fdb92a8eb [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x56475a5ad43b - backtrace::backtrace::trace_unsynchronized::hb03857eb223d1e1b [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x56475a5ad43b - std::sys_common::backtrace::_print::hc504093b15dd6a49 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x56475a5ad43b - std::sys_common::backtrace::print::h74592d8df46164e6 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x56475a5ad43b - std::panicking::default_hook::{{closure}}::h148953d9747d04f4 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x56475a5ad116 - std::panicking::default_hook::h72a253311e200c7c [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x56475a5adafd - std::panicking::rust_panic_with_hook::h625fcf59e672b6a0 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x56475a5ad682 - std::panicking::continue_panic_fmt::hb865580971245aec [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x56475a5ad566 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x56475a5c23bd - core::panicking::panic_fmt::h88ab02319bb01bbf [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x56475a5c24b7 - core::result::unwrap_failed::hcd16c30e39593715 [INFO] [stderr] at src/libcore/result.rs:1084 [INFO] [stderr] 11: 0x56475a573ba0 - core::result::Result::unwrap::h0802ec16c039c1c0 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libcore/result.rs:852 [INFO] [stderr] 12: 0x56475a575cb5 - build_script_gen_mime_types::main::h116754edc3b0e5c4 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-2.0.0-alpha.3/src/gen_mime_types.rs:22 [INFO] [stderr] 13: 0x56475a5607d0 - std::rt::lang_start::{{closure}}::hf00794e87e43c2a8 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x56475a5ad553 - std::rt::lang_start_internal::{{closure}}::h5b4ccd53e4167b89 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x56475a5ad553 - std::panicking::try::do_call::h85f9b79f07affa28 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x56475a5af64a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x56475a5ae00d - std::panicking::try::h0463127fe79abe73 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x56475a5ae00d - std::panic::catch_unwind::h846bfd7d9d99e56b [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x56475a5ae00d - std::rt::lang_start_internal::h0a72d627fb2e90ec [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x56475a5607a9 - std::rt::lang_start::h95093c1dd0089a89 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x56475a57723a - main [INFO] [stderr] 22: 0x7efeef43d2e1 - __libc_start_main [INFO] [stderr] 23: 0x56475a54c1ca - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "cdd580cfa19e1dfa669ad367af5909d935730242be9b1653608f8ac232bf9c32"` [INFO] running `"docker" "rm" "-f" "cdd580cfa19e1dfa669ad367af5909d935730242be9b1653608f8ac232bf9c32"` [INFO] [stdout] cdd580cfa19e1dfa669ad367af5909d935730242be9b1653608f8ac232bf9c32