[INFO] cloning repository ratijas/mess-algos [INFO] running `"git" "clone" "--bare" "git://github.com/ratijas/mess-algos.git" "work/cache/sources/gh/ratijas/mess-algos"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/ratijas/mess-algos'... [INFO] running `"git" "clone" "work/cache/sources/gh/ratijas/mess-algos" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ratijas/mess-algos"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ratijas/mess-algos'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ratijas/mess-algos" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/ratijas/mess-algos"` [INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/ratijas/mess-algos'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 70fd970c7920973bb5f78ea474a4e419d237c5aa [INFO] sha for GitHub repo ratijas/mess-algos: 70fd970c7920973bb5f78ea474a4e419d237c5aa [INFO] validating manifest of ratijas/mess-algos on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of ratijas/mess-algos on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing ratijas/mess-algos [INFO] finished frobbing ratijas/mess-algos [INFO] frobbed toml for ratijas/mess-algos written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ratijas/mess-algos/Cargo.toml [INFO] started frobbing ratijas/mess-algos [INFO] finished frobbing ratijas/mess-algos [INFO] frobbed toml for ratijas/mess-algos written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/ratijas/mess-algos/Cargo.toml [INFO] crate ratijas/mess-algos already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking ratijas/mess-algos against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-5/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/ratijas/mess-algos:/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] ae6a7bdde1b810c1d6a42af5772d0ef6b19a0391ac8ff6d6b616d2606e6c4052 [INFO] running `"docker" "start" "-a" "ae6a7bdde1b810c1d6a42af5772d0ef6b19a0391ac8ff6d6b616d2606e6c4052"` [INFO] [stderr] Checking serde v1.0.19 [INFO] [stderr] Checking base64 v0.7.0 [INFO] [stderr] Compiling openssl-sys v0.9.20 [INFO] [stderr] Checking tokio-io v0.1.3 [INFO] [stderr] Checking url v1.6.0 [INFO] [stderr] Checking libflate v0.1.12 [INFO] [stderr] Compiling serde_derive v1.0.19 [INFO] [stderr] Compiling mime_guess v2.0.0-alpha.2 [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-d2da52a16d50d06f/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:999:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55ac3c0f7a3b - backtrace::backtrace::libunwind::trace::hc6a4966d389b62be [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55ac3c0f7a3b - backtrace::backtrace::trace_unsynchronized::h234cd6c2c95fa587 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55ac3c0f7a3b - std::sys_common::backtrace::_print::h2896bece16680b31 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55ac3c0f7a3b - std::sys_common::backtrace::print::h5f4d4b954705d426 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55ac3c0f7a3b - std::panicking::default_hook::{{closure}}::h3d52949e2d73c1aa [INFO] [stderr] at src/libstd/panicking.rs:198 [INFO] [stderr] 5: 0x55ac3c0f773c - std::panicking::default_hook::h4b88c02cc00064f5 [INFO] [stderr] at src/libstd/panicking.rs:212 [INFO] [stderr] 6: 0x55ac3c0f8100 - std::panicking::rust_panic_with_hook::he5596ad1952b7279 [INFO] [stderr] at src/libstd/panicking.rs:475 [INFO] [stderr] 7: 0x55ac3c0f7c82 - std::panicking::continue_panic_fmt::h13f3a9aeaf0459c4 [INFO] [stderr] at src/libstd/panicking.rs:382 [INFO] [stderr] 8: 0x55ac3c0f7b66 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:309 [INFO] [stderr] 9: 0x55ac3c10ccad - core::panicking::panic_fmt::h35cf1b39b1635ed5 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 10: 0x55ac3c0eadd8 - core::result::unwrap_failed::h26fa23e25870c83e [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libcore/macros.rs:18 [INFO] [stderr] 11: 0x55ac3c0b72ec - core::result::Result::unwrap::h6a11f2eefc506eb4 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libcore/result.rs:800 [INFO] [stderr] 12: 0x55ac3c0be2d5 - build_script_gen_mime_types::main::h303262f5bda5d5d9 [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: 0x55ac3c0d9ef0 - std::rt::lang_start::{{closure}}::h14b97f97f50d4979 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/rt.rs:64 [INFO] [stderr] 14: 0x55ac3c0f7b53 - std::rt::lang_start_internal::{{closure}}::h97d240c87982728f [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 15: 0x55ac3c0f7b53 - std::panicking::try::do_call::h657ecdd23710c935 [INFO] [stderr] at src/libstd/panicking.rs:294 [INFO] [stderr] 16: 0x55ac3c0f9efa - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 17: 0x55ac3c0f860d - std::panicking::try::h52772d620cb80373 [INFO] [stderr] at src/libstd/panicking.rs:273 [INFO] [stderr] 18: 0x55ac3c0f860d - std::panic::catch_unwind::hac02eb84ea8f3a3e [INFO] [stderr] at src/libstd/panic.rs:388 [INFO] [stderr] 19: 0x55ac3c0f860d - std::rt::lang_start_internal::h9fab34d7c96dfdc9 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 20: 0x55ac3c0d9ec9 - std::rt::lang_start::h0c99055e048f6878 [INFO] [stderr] at /rustc/9f06855064ed06a50c496577b21ca50f92a2e67d/src/libstd/rt.rs:64 [INFO] [stderr] 21: 0x55ac3c0bf91a - main [INFO] [stderr] 22: 0x7f011e2ba2e1 - __libc_start_main [INFO] [stderr] 23: 0x55ac3c0973ca - _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" "ae6a7bdde1b810c1d6a42af5772d0ef6b19a0391ac8ff6d6b616d2606e6c4052"` [INFO] running `"docker" "rm" "-f" "ae6a7bdde1b810c1d6a42af5772d0ef6b19a0391ac8ff6d6b616d2606e6c4052"` [INFO] [stdout] ae6a7bdde1b810c1d6a42af5772d0ef6b19a0391ac8ff6d6b616d2606e6c4052