[INFO] updating cached repository durch/ringer [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/durch/ringer [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/durch/ringer" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/durch/ringer"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/durch/ringer'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/durch/ringer" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/durch/ringer"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/durch/ringer'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] caba15cfa1b23bc9e1ad69de6c3aad09a4193851 [INFO] sha for GitHub repo durch/ringer: caba15cfa1b23bc9e1ad69de6c3aad09a4193851 [INFO] validating manifest of durch/ringer 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 durch/ringer 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 durch/ringer [INFO] finished frobbing durch/ringer [INFO] frobbed toml for durch/ringer written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/durch/ringer/Cargo.toml [INFO] started frobbing durch/ringer [INFO] finished frobbing durch/ringer [INFO] frobbed toml for durch/ringer written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/durch/ringer/Cargo.toml [INFO] crate durch/ringer 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking durch/ringer 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/durch/ringer:/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] 47f021967667bee0da3691a578d729e321b72a5bcd4f1ab903acf835dfc17f4c [INFO] running `"docker" "start" "-a" "47f021967667bee0da3691a578d729e321b72a5bcd4f1ab903acf835dfc17f4c"` [INFO] [stderr] Compiling libc v0.2.23 [INFO] [stderr] Compiling num-traits v0.1.37 [INFO] [stderr] Compiling pq-sys v0.4.3 [INFO] [stderr] Compiling itoa v0.3.1 [INFO] [stderr] Compiling dtoa v0.4.1 [INFO] [stderr] Compiling serde v1.0.7 [INFO] [stderr] Checking buf-read-ext v0.2.1 [INFO] [stderr] Checking quick-error v1.2.0 [INFO] [stderr] Checking unicode-bidi v0.3.1 [INFO] [stderr] Compiling backtrace-sys v0.1.10 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Compiling libz-sys v1.0.13 [INFO] [stderr] Compiling unreachable v0.1.1 [INFO] [stderr] Compiling openssl-sys v0.9.12 [INFO] [stderr] Compiling curl-sys v0.3.11 [INFO] [stderr] Checking mime v0.2.4 [INFO] [stderr] Checking unsafe-any v0.4.1 [INFO] [stderr] Compiling hyper v0.10.10 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Compiling rand v0.3.15 [INFO] [stderr] Compiling thread-id v3.1.0 [INFO] [stderr] Compiling time v0.1.37 [INFO] [stderr] Compiling memchr v1.0.1 [INFO] [stderr] Compiling num-integer v0.1.34 [INFO] [stderr] Checking num_cpus v1.4.0 [INFO] [stderr] Checking idna v0.1.2 [INFO] [stderr] Checking typemap v0.3.3 [INFO] [stderr] Compiling thread_local v0.3.3 [INFO] [stderr] Compiling aho-corasick v0.6.3 [INFO] [stderr] Compiling num-iter v0.1.33 [INFO] [stderr] Checking futures-cpupool v0.1.5 [INFO] [stderr] Checking tempdir v0.3.5 [INFO] [stderr] Compiling num v0.1.37 [INFO] [stderr] Compiling regex v0.2.2 [INFO] [stderr] Checking chrono v0.3.1 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Checking url v1.4.0 [INFO] [stderr] Checking handlebars v0.25.3 [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 serde_codegen_internals v0.14.2 [INFO] [stderr] Compiling serde_derive_internals v0.15.0 [INFO] [stderr] Compiling dotenv v0.9.0 [INFO] [stderr] Checking serde_json v1.0.2 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Checking phf v0.7.21 [INFO] [stderr] Checking chrono-humanize v0.0.9 [INFO] [stderr] Checking pwhash v0.1.2 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling diesel v0.13.0 [INFO] [stderr] Checking backtrace v0.3.2 [INFO] [stderr] Compiling mime_guess v1.8.1 [INFO] [stderr] Checking error-chain v0.10.0 [INFO] [stderr] Compiling serde_derive v0.9.15 [INFO] [stderr] Compiling derive-error-chain v0.10.1 [INFO] [stderr] Compiling serde_derive v1.0.7 [INFO] [stderr] error: failed to run custom build command for `mime_guess v1.8.1` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mime_guess-ce17d4f60fc977dc/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: 0x55b7261757eb - 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: 0x55b7261757eb - 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: 0x55b7261757eb - std::sys_common::backtrace::_print::hc504093b15dd6a49 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55b7261757eb - std::sys_common::backtrace::print::h74592d8df46164e6 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55b7261757eb - std::panicking::default_hook::{{closure}}::h148953d9747d04f4 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55b7261754c6 - std::panicking::default_hook::h72a253311e200c7c [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55b726175ead - std::panicking::rust_panic_with_hook::h625fcf59e672b6a0 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55b726175a32 - std::panicking::continue_panic_fmt::hb865580971245aec [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55b726175916 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x55b72618a76d - core::panicking::panic_fmt::h88ab02319bb01bbf [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55b72618a867 - core::result::unwrap_failed::hcd16c30e39593715 [INFO] [stderr] at src/libcore/result.rs:1084 [INFO] [stderr] 11: 0x55b72613c790 - core::result::Result::unwrap::hd52b46ee3f199df4 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libcore/result.rs:852 [INFO] [stderr] 12: 0x55b72613e765 - build_script_gen_mime_types::main::h0fc2902e71f09633 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.1/src/gen_mime_types.rs:22 [INFO] [stderr] 13: 0x55b726129490 - std::rt::lang_start::{{closure}}::h2131de7adf6bff80 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55b726175903 - std::rt::lang_start_internal::{{closure}}::h5b4ccd53e4167b89 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55b726175903 - std::panicking::try::do_call::h85f9b79f07affa28 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x55b7261779fa - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x55b7261763bd - std::panicking::try::h0463127fe79abe73 [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x55b7261763bd - std::panic::catch_unwind::h846bfd7d9d99e56b [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x55b7261763bd - std::rt::lang_start_internal::h0a72d627fb2e90ec [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55b726129469 - std::rt::lang_start::h5645de0df20ab972 [INFO] [stderr] at /rustc/c43d03a19f326f4a323569328cc501e86eb6d22e/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55b72613fcea - main [INFO] [stderr] 22: 0x7f10725a52e1 - __libc_start_main [INFO] [stderr] 23: 0x55b726114e9a - _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" "47f021967667bee0da3691a578d729e321b72a5bcd4f1ab903acf835dfc17f4c"` [INFO] running `"docker" "rm" "-f" "47f021967667bee0da3691a578d729e321b72a5bcd4f1ab903acf835dfc17f4c"` [INFO] [stdout] 47f021967667bee0da3691a578d729e321b72a5bcd4f1ab903acf835dfc17f4c