[INFO] updating cached repository coder543/u [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/coder543/u [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/coder543/u" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/coder543/u"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/coder543/u'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/coder543/u" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/coder543/u"` [INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/coder543/u'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8c72018fb7743abe42976845be7c8919eac21380 [INFO] sha for GitHub repo coder543/u: 8c72018fb7743abe42976845be7c8919eac21380 [INFO] validating manifest of coder543/u 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 coder543/u 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 coder543/u [INFO] finished frobbing coder543/u [INFO] frobbed toml for coder543/u written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/coder543/u/Cargo.toml [INFO] started frobbing coder543/u [INFO] finished frobbing coder543/u [INFO] frobbed toml for coder543/u written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/coder543/u/Cargo.toml [INFO] crate coder543/u 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 coder543/u against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/coder543/u:/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] bb97ecbcc72c74dd391960c5e9593e55ae6479fcd3129d400d417f2d72aa7bbe [INFO] running `"docker" "start" "-a" "bb97ecbcc72c74dd391960c5e9593e55ae6479fcd3129d400d417f2d72aa7bbe"` [INFO] [stderr] Compiling u v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Checking serde_json v1.0.6 [INFO] [stderr] Compiling openssl-sys v0.9.20 [INFO] [stderr] Checking url v1.6.0 [INFO] [stderr] Checking hyper v0.11.6 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [INFO] [stderr] Compiling openssl v0.9.20 [INFO] [stderr] error: failed to run custom build command for `mime_guess v2.0.0-alpha.2` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/mime_guess-05d02eef59f24c72/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: 0x555c362353cb - backtrace::backtrace::libunwind::trace::h5d27dcba3b250cfe [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x555c362353cb - backtrace::backtrace::trace_unsynchronized::h239341a8b1cadbab [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x555c362353cb - std::sys_common::backtrace::_print::hb0e5dd39180a1838 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x555c362353cb - std::sys_common::backtrace::print::h9b385b2285f057b8 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x555c362353cb - std::panicking::default_hook::{{closure}}::he3310a15a78966b4 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x555c362350a6 - std::panicking::default_hook::h2986f418df62eff4 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x555c36235a8d - std::panicking::rust_panic_with_hook::h15065386631d2a9d [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x555c36235612 - std::panicking::continue_panic_fmt::h5e7761875fda3864 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x555c362354f6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:311 [INFO] [stderr] 9: 0x555c3624a22d - core::panicking::panic_fmt::ha57541b4d360b196 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x555c3624a327 - core::result::unwrap_failed::h30a7262287ea7c1e [INFO] [stderr] at src/libcore/result.rs:1084 [INFO] [stderr] 11: 0x555c361fba20 - core::result::Result::unwrap::h079b569c0d045d3d [INFO] [stderr] at /rustc/452087b4bf18cece2d52d7cd8c9147195e5404bf/src/libcore/result.rs:852 [INFO] [stderr] 12: 0x555c361fd5b5 - build_script_gen_mime_types::main::h17598334dad3f8cc [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-2.0.0-alpha.2/src/gen_mime_types.rs:22 [INFO] [stderr] 13: 0x555c361e8580 - std::rt::lang_start::{{closure}}::hd88a62c01e64aa97 [INFO] [stderr] at /rustc/452087b4bf18cece2d52d7cd8c9147195e5404bf/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x555c362354e3 - std::rt::lang_start_internal::{{closure}}::hbf4603a1e6e1424d [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x555c362354e3 - std::panicking::try::do_call::h7642e0de797eeae0 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 16: 0x555c362375da - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 17: 0x555c36235f9d - std::panicking::try::h17f145530f8b5a3f [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 18: 0x555c36235f9d - std::panic::catch_unwind::hcee1b9b07ea0f9dc [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 19: 0x555c36235f9d - std::rt::lang_start_internal::h82d44298f58b2cfd [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x555c361e8559 - std::rt::lang_start::h0cbfa7739cd0b3df [INFO] [stderr] at /rustc/452087b4bf18cece2d52d7cd8c9147195e5404bf/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x555c361feb3a - main [INFO] [stderr] 22: 0x7f0af26b92e1 - __libc_start_main [INFO] [stderr] 23: 0x555c361d3f8a - _start [INFO] [stderr] 24: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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-1.6.0/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] error: build failed [INFO] running `"docker" "inspect" "bb97ecbcc72c74dd391960c5e9593e55ae6479fcd3129d400d417f2d72aa7bbe"` [INFO] running `"docker" "rm" "-f" "bb97ecbcc72c74dd391960c5e9593e55ae6479fcd3129d400d417f2d72aa7bbe"` [INFO] [stdout] bb97ecbcc72c74dd391960c5e9593e55ae6479fcd3129d400d417f2d72aa7bbe